AT Commands Set SIM7500 SIM7600 Series Command Manual V1.03
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- Version History
 - Contents
 - Introduction
 - AT Interface Synopsis
 - AT Commands According V.25TER
- A/ Repeat last command
 - ATD Dial command
 - ATD><mem><n> Originate call from specified memory
 - ATD><n> Originate call from active memory (1)
 - ATD><str> Originate call from active memory (2)
 - ATA Call answer
 - ATH Disconnect existing call
 - ATS0 Automatic answer incoming call
 - +++ Switch from data mode to command mode
 - ATO Switch from command mode to data mode
 - ATI Display product identification information
 - AT+IPR Set local baud rate temporarily
 - AT+ICF Set control character framing
 - AT+IFC Set local data flow control
 - AT&C Set DCD function mode
 - ATE Enable command echo
 - AT&V Display current configuration
 - AT&D Set DTR function mode
 - AT&S Set DSR function mode
 - ATV Set result code format mode
 - AT&F Set all current parameters to manufacturer defaults
 - ATQ Set Result Code Presentation Mode
 - ATX Set CONNECT Result Code Format
 - AT\V Set CONNECT Result Code Format About Protocol
 - AT&E Set CONNECT Result Code Format About Speed
 - AT&W Save the user setting to ME
 - ATZ Restore the user setting from ME
 - AT+CGMI Request manufacturer identification
 - AT+CGMM Request model identification
 - AT+CGMR Request revision identification
 - AT+CGSN Request product serial number identification
 - AT+CSCS Select TE character set
 - AT+CIMI Request international mobile subscriber identity
 - AT+CIMIM Request another international mobile subscriber identity
 - AT+GCAP Request overall capabilities
 
 - AT Commands for Status Control
- AT+CFUN Set phone functionality
 - AT+CPIN Enter PIN
 - AT+CICCID Read ICCID from SIM card
 - AT+CSIM Generic SIM access
 - AT+CRSM Restricted SIM access
 - AT+SPIC Times remain to input SIM PIN/PUK
 - AT+CSPN Get service provider name from SIM
 - AT+CSQ Query signal quality
 - AT+AUTOCSQ Set CSQ report
 - AT+CSQDELTA Set RSSI delta change threshold
 - AT+CATR Configure URC destination interface
 - AT+CPOF Power down the module
 - AT+CRESET Reset the module
 - AT+CACM Accumulated call meter
 - AT+CAMM Accumulated call meter maximum
 - AT+CPUC Price per unit and currency table
 - AT+CCLK Real time clock management
 - AT+CMEE Report mobile equipment error
 - AT+CPAS Phone activity status
 - AT+SIMEI Set IMEI for the module
 - AT+SMEID Request Mobile Equipment Identifier
 - AT+CSVM Voice Mail Subscriber number
 - AT+CUSBPIDSWITCH Change module’s PID
 - Indication of EONS
 - Indication of Voice Mail
 
 - AT Commands for Network
- AT+CREG Network registration
 - AT+COPS Operator selection
 - AT+CLCK Facility lock
 - AT+CPWD Change password
 - AT+CCUG Closed user group
 - AT+CUSD Unstructured supplementary service data
 - AT+CAOC Advice of charge
 - AT+CSSN Supplementary service notifications
 - AT+CPOL Preferred operator list
 - AT+COPN Read operator names
 - AT+CNMP Preferred mode selection
 - AT+CNBP Preferred band selection
 - AT+CNAOP Acquisitions order preference
 - AT+CPSI Inquiring UE system information
 - AT+CNSMOD Show network system mode
 - AT+CEREG EPS network registration status
 - AT+CTZU Automatic time and time zone update
 - AT+CTZR Time and time zone reporting
 - AT+NETMODE WCDMA & TDSCDMA mode select
 
 - AT Commands for Call Control
- AT+CVHU Voice hang up control
 - AT+CHUP Hang up call
 - AT+CBST Select bearer service type
 - AT+CRLP Radio link protocol
 - AT+CR Service reporting control
 - AT+CRC Cellular result codes
 - AT+CLCC List current calls
 - AT+CEER Extended error report
 - AT+CCWA Call waiting
 - AT+CHLD Call related supplementary services
 - AT+CCFC Call forwarding number and conditions
 - AT+CLIP Calling line identification presentation
 - AT+CLIR Calling line identification restriction
 - AT+COLP Connected line identification presentation
 - AT+VTS DTMF and tone generation
 - AT+VTD Tone duration
 - AT+CSTA Select type of address
 - AT+CMOD Call mode
 - AT+VMUTE Speaker mute control
 - AT+CMUT Microphone mute control
 - AT+MORING Enable or disable report MO ring URC
 - AT+CSDVC Switch voice channel device
 - AT+CLVL Loudspeaker volume level
 - AT+SIDET Set sidetone
 - AT+CACDBFN Change default ACDB filename
 - AT+CPCMREG USB audio control
 - AT+CMICGAIN Adjust mic gain
 - AT+COUTGAIN Adjust out gain
 - AT+CTXVOL Adjust TX voice mic volume
 - AT+CTXMICGAIN Adjust TX voice mic gain
 - AT+CRXVOL Adjust RX voice output speaker volume
 - AT+CECH Inhibit far-end echo
 - AT+CECDT Inhibit echo during doubletalk
 - AT+CECWB Inhibit echo in the high band
 - AT+CNSN MIC NOISE suppression
 - AT+CNSLIM MIC NOISE suppression
 - AT+CFNSMOD Adjust parameter fnsMode of RX_VOICE_FNS
 - AT+CFNSIN Adjust parameter fnsInputGain of RX_VOICE_FNS
 - AT+CFNSLVL Adjust parameter fnsTargetNS of RX_VOICE_FNS
 - AT+CECRX Enable or disable VOICE_MOD_ENABLE
 - AT+CNLPPG Modify the NLPP_gain in DSP
 - AT+CNLPPL Modify the NLPP_limit in DSP
 - AT+CECM Adjust echo canceller
 
 - AT Commands for SMS
- AT+CSMS Select message service
 - AT+CPMS Preferred message storage
 - AT+CMGF Select SMS message format
 - AT+CSCA SMS service centre address
 - AT+CSCB Select cell broadcast message indication
 - AT+CSMP Set text mode parameters
 - AT+CSDH Show text mode parameters
 - AT+CNMA New message acknowledgement to ME/TA
 - AT+CNMI New message indications to TE
 - AT+CGSMS Select service for MO SMS messages
 - AT+CMGL List SMS messages from preferred store
 - AT+CMGR Read message
 - AT+CMGS Send message
 - AT+CMSS Send message from storage
 - AT+CMGW Write message to memory
 - AT+CMGD Delete message
 - AT+CMGMT Change message status
 - AT+CMVP Set message valid period
 - AT+CMGRD Read and delete message
 - AT+CMGSEX Send message
 - AT+CMSSEX Send multi messages from storage
 - AT+CMGP Set cdma/evdo text mode parameters
 
 - AT Commands for Phonebook
 - AT Commands for GPRS
- AT+CGREG GPRS network registration status
 - AT+CGATT Packet domain attach or detach
 - AT+CGACT PDP context activate or deactivate
 - AT+CGDCONT Define PDP context
 - AT+CGDSCONT Define Secondary PDP Context
 - AT+CGTFT Traffic Flow Template
 - AT+CGQREQ Quality of service profile (requested)
 - AT+CGEQREQ 3G quality of service profile (requested)
 - AT+CGQMIN Quality of service profile (minimum acceptable)
 - AT+CGEQMIN 3G quality of service profile (minimum acceptable)
 - AT+CGDATA Enter data state
 - AT+CGPADDR Show PDP address
 - AT+CGCLASS GPRS mobile station class
 - AT+CGEREP GPRS event reporting
 - AT+CGAUTH Set type of authentication for PDP-IP connections of GPRS
 
 - Hardware Related Commands
- AT+CVALARM Low and high voltage Alarm
 - AT+CVAUXS Set state of the pin named VREG_AUX1
 - AT+CVAUXV Set voltage value of the pin named VREG_AUX1
 - AT+CADC Read ADC value
 - AT+CADC2 Read ADC2 value
 - AT+CMTE Control the module whether power shutdown when the module’s temperature upon the critical temperature
 - AT+CPMVT Low and high voltage Power Off
 - AT+CDELTA Set the module go to recovery mode
 - AT+CRIIC Read values from register of IIC device
 - AT+CWIIC Write values to register of IIC device
 - AT+CBC Read the voltage value of the power supply
 - AT+CPMUTEMP Read the temperature of the module
 
 - AT Commands for SIM Application Toolkit
 - AT Commands for Hardware
- AT+IPREX Set local baud rate permanently
 - AT+CFGRI Indicate RI when using URC
 - AT+CSCLK Control UART Sleep
 - AT+CMUX Enable the multiplexer over the UART
 - AT+CGFUNC Enable/disable the function for the special GPIO
 - AT+CGDRT Set the direction of specified GPIO
 - AT+CGSETV Set the value of specified GPIO
 - AT+CGGETV Get the value of specified GPIO
 - AT+CGISR Set GPIO interrupt trigger condition
 
 - AT Commands for File System
- AT+FSCD Select directory as current directory
 - AT+FSMKDIR Make new directory in current directory
 - AT+FSRMDIR Delete directory in current directory
 - AT+FSLS List directories/files in current directory
 - AT+FSDEL Delete file in current directory
 - AT+FSRENAME Rename file in current directory
 - AT+FSATTRI Request file attributes
 - AT+FSMEM Check the size of available memory
 - AT+FSLOCA Select storage place
 - AT+FSCOPY Copy an appointed file
 
 - AT Commands for File Transmission
 - AT Commands for Internet Service
- PDP
- AT+CSOCKSETPN Set active PDP context’s profile number
 - AT+CIPDNSSET Set DNS query parameters
 - AT+CDNSGIP Query the IP address of given domain name
 - AT+CDNSGHNAME Query the domain name of given IP address
 - AT+CPING Ping destination address
 - AT+CPINGSTOP Stop an ongoing ping session
 - AT+CTCPFIN Configure TCP FIN
 - AT+CTCPKA Conigure TCP heartbeat
 - AT+CTEUTP Set unknown incoming TCP packet echo
 - AT+CUPURE Set UDP port unreachable ICMP echo
 - AT+CINICMPALLOW Preferred ICMP filter
 - AT+CDNSSRV Get dns server ip address
 
 - TCP/UDP
- AT+CIPCCFG Configure parameters of socket
 - AT+CIPSENDMODE Select sending mode
 - AT+CIPTIMEOUT Set TCP/IP timeout value
 - AT+CIPHEAD Add an IP head when receiving data
 - AT+CIPSRIP Show Remote IP address and Port
 - AT+CIPMODE Select TCP/IP application mode
 - AT+NETOPEN Open socket
 - AT+NETCLOSE Close socket
 - AT+IPADDR Inquire socket PDP address
 - AT+CIPFILTERSET IP filter configuration
 - AT+SERVERSTART Startup TCP server
 - AT+SERVERSTOP Stop TCP server
 - AT+CIPOPEN Establish connection in multi-socket mode
 - AT+CIPSEND Send data through TCP or UDP connection
 - AT+CIPRXGET Get the network data manually
 - AT+CIPCLOSE Close TCP or UDP socket
 - AT+CIPSTAT Inquire the total size of data sent or received
 - Information elements related to TCP/IP
 - Unsolicited TCP/IP command <err> Codes
 
 - FTP
- AT+CFTPPORT Set FTP server port
 - AT+CFTPMODE Set FTP mode
 - AT+CFTPTYPE Set FTP type
 - AT+CFTPSERV Set FTP server domain name or IP address
 - AT+CFTPUN Set user name for FTP access
 - AT+CFTPPW Set user password for FTP access
 - AT+CFTPGETFILE Get a file from FTP server to EFS
 - AT+CFTPPUTFILE Upload a file from module EFS to FTP server
 - AT+CFTPGET Get a file from FTP server and output it to SIO
 - AT+CFTPPUT Upload the DATA from SIO to FTP server
 - AT+CFTPLIST List the items in the directory on FTP server
 - AT+CFTPMKD Create a new directory on FTP server
 - AT+CFTPRMD Delete a directory on FTP server
 - AT+CFTPDELE Delete a file on FTP server
 - AT+CFTPCACHERD Output cached data to MCU
 - Unsolicited FTP Codes (Summary of CME ERROR Codes)
 
 - HTTP
 - HTP
 - SMTP
- AT+SMTPSRV Set SMTP server address and port number
 - AT+SMTPAUTH SMTP server authentication
 - AT+SMTPFROM Sender address and name
 - AT+SMTPRCPT Recipient address and name (TO/CC/BCC)
 - AT+SMTPSUB E-mail subject
 - AT+SMTPBODY E-mail body
 - AT+SMTPBCH E-mail body character set
 - AT+SMTPFILE Select attachment
 - AT+SMTPSEND Initiate session and send e-mail
 - AT+SMTPSTOP Force to stop sending e-mail
 
 - Common Channel Service
- AT+CCHSTART Acquire common channel service
 - AT+CCHSTOP Stop common channel service
 - AT+CCHOPEN Open a channel
 - AT+CCHCLOSE Close a channel
 - AT+CCHSEND Send data to peer
 - AT+CCHRECV Receive data from the channel
 - AT+CCHSET Set the parameter of common channel service
 - AT+CCHADDR Get the IPv4 address for common channel service
 - Unsolicited common channel Codes
 - Unsolicited common channel command <err> Codes
 
 - SSL Certificate & Key Management
 
 - PDP
 - AT Commands for GPS
- AT+CGPS Start/Stop GPS session
 - AT+CGPSINFO Get GPS fixed position information
 - AT+CGPSCOLD Cold start GPS
 - AT+CGPSHOT Hot start GPS
 - AT+CGPSURL Set AGPS default server URL
 - AT+CGPSSSL Set AGPS transport security
 - AT+CGPSAUTO Start GPS automatic
 - AT+CGPSNMEA Configure NMEA sentence type
 - AT+CGPSMD Configure AGPS MO method
 - AT+CGPSFTM Start GPS test mode
 - AT+CGPSDEL Delete the GPS information
 - AT+ CGPSXE Enable/Disable GPS XTRA function
 - AT+CGPSXD Download XTRA assistant file
 - AT+CGPSXDAUTO Download XTRA assistant file automatically
 - AT+CGPSINFOCFG Report GPS NMEA-0183 sentence
 - AT+CGPSPMD Configure positioning mode
 - AT+CGPSMSB Configure based mode switch to standalone
 - AT+CGPSHOR Configure positioning desired accuracy
 - AT+CGPSNOTIFY LCS respond positioning request
 - AT+CGPSMODE Configure GPS and GLONASS mode
 - AT+CBDS Enable/Disable BEIDOU session
 - Unsolicited XTRA download Codes
 
 - Appendixes
 

SIM7500_SIM7600 Series_AT 
Command Manual_V1.03 
SIMCOM   CONFIDENTIAL FILE

                                                           Smart Machine Smart Decision 
SIM7500_SIM7600 Series_AT Command Manual_V1.03                                          2017-02-10 
1 
Document Title: SIM7500 SIM7600 Series_AT Command Manual 
Version: 1.03 
Date:  2017-02-10 
Status: Release 
Document ID: SIM7500_SIM7600 Series_AT Command Manual_V1.03 
General Notes 
SIMCom offers this information as a service to its customers, to support application and engineering efforts 
that use the products designed by SIMCom. The information provided is based upon requirements 
specifically provided to SIMCom by the customers. SIMCom has not undertaken any independent search 
for additional relevant information, including any information that may be in the customer’s possession. 
Furthermore, system validation of this product designed by SIMCom within a larger electronic system 
remains the responsibility of the customer or the customer’s system integrator. All specifications supplied 
herein are subject to change. 
Copyright 
This document contains proprietary technical information which is the property of SIMCom Limited., 
copying of this document and giving it to others and the using or communication of the contents thereof, 
are forbidden without express authority. Offenders are liable to the payment of damages. All rights reserved 
in the event of grant of a patent or the registration of a utility model or design. All specification supplied 
herein are subject to change without notice at any time. 
Copyright © Shanghai SIMCom Wireless Solutions Ltd. 2017 
SIMCOM   CONFIDENTIAL FILE

                                                           Smart Machine Smart Decision 
SIM7500_SIM7600 Series_AT Command Manual_V1.03                                          2017-02-10 
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Version History 
Version 
Date 
Chapter 
What is new 
V1.00  2016-07-08    New version 
V1.01  2016-07-21  5.5  AT+CCUG Add note. 
V1.01  2016-07-21  5.6  AT+CUSD  Add note. 
V1.01  2016-07-21  5.7  AT+CAOC Add note. 
V1.01  2016-07-21  5.8  AT+CS SN  Add note. 
V1.01  2016-07-21  11.2    AT + S T G I  Add PDU format support 
V1.01  2016-07-21  11.3    AT + S T G R Add PDU format support 
V1.01  2016-07-21  11.6    AT+STENV  Add this command 
V1.01 
2016-07-21 
11.7    AT+STSM 
Add this command 
V1.02 
2016-07-27 
11.7  AT+STSM 
Modify this command 
V1.02  2016-07-27  5.13    AT+CNAOP  Modify this command 
V1.02  2016-07-27  5.18    AT+C T ZU Modify this command 
V1.02  2016-07-27  5.19    AT+CTZR  Modify this command 
V1.02  2016-07-27  5.16    AT+CP S I    Modify this command 
V1.02  2016-07-27  9.15  AT+C GAUTH  Modify this command 
V1.02  2016-07-27  Chapter 15    Delete the CSOCK* Command 
V1.02  2016-07-27  3.21    AT&F  Modify this command 
V1.02 
2016-07-28 
6.25  AT+CACDBFN 
Modify this command 
V1.02 
2016-07-29 
5.18  AT+C T ZU 
Modify this command 
V1.02  2016-07-29  5.18  AT+C T ZR  Modify this command 
V1.02  2016-07-29  6.24  AT+SIDET  Modify this command 
V1.02  2016-07-29  5.20  AT+NETMODE  Modify this command,PIN->NO 
V1.02  2016-07-29  12.5  AT+CGFUNC  Modify this command 
V1.02  2016-07-29  12.6  AT+C GDRT  Modify this command 
V.1.02  2016-07-29  12.7  AT+C GGRTV  Modify this command 
V.1.02  2016-07-29  12.8  AT+C GSETV Modify this command 
V1.02  2016-07-29  5.15  AT+CP S I    Modify this command 
V1.02  2016-07-29  11.2  AT+STGI  Modify this command 
V1.02 
2016-07-29 
11.7  AT+STSM 
Modify this command 
V1.02  2016-07-29  Delete CSD function Delete CSD function 
V1.02  2016-08-05  11.5    AT+ S T KFM T  
Set STK 
Modify this command 
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pdu format 
V1.02  2016-08-05  5.15   
AT+CPSI  Inquiring UE 
system information 
Modify 1xlte 
V1.02  2016-08-05  9.11   AT+ C GDATA  En t er d at a  
state 
Modify cid 
V1.02  2016-08-05  9.3    AT+CGACT 
PDP context 
activate or deactivate 
Modify cid 
V1.02  2016-08-05  7.9  AT+CNMI New m
essage 
indications to TE 
Modify default value 
V1.02  2016-08-12  7.25   AT+CMGP   
Set 
cdma/evdo text mode parameters 
Modify format 
V1.02  2016-08-16  15.7    Common Channel Service 
15.8  SSL Certificate & Key 
management 
Modify these commands   
V1.02  2016-08-16  6.29  AT+CTXVOL 
6.30  AT+CTXMICGAIN 
Add commands 
V1.02  2016-08-17  11.7   
AT+STSM    Get STK Setup 
Menu List with PDU Mode 
Modify this command 
V1.02 
2016-08-17 
5.14    AT+CNSDP  Preferred 
service domain selection 
Delete this command 
V1.02  2016-08-19  AT+CMGENREF 
AT+CMSSEXM 
AT+CSALPHA 
Delete this command 
V1.02  2016-08-26  15.1.6  AT+CPINGSTOP  Modify this command 
V1.02  2016-08-30  5.19  AT+NETMODE  Modify this command 
V1.02  2016-09-05  3.21  AT&F  Modify this command 
V1.02  2016-09-05  10.6  AT+CMTE Modify test command 
V1.02  2016-09-05  15.7.3  AT + C C H OPEN   
15.7.7  AT + C C H S ET  
15.7.8  AT + C C H ADDR 
Modify these commands 
V1.02  2016-09-05  15.7.10  
Unsolicited common 
channel command <err> Codes 
Add error code description 
V1.02  2016-09-06  6.27  AT+CMICGAIN 
6.28  AT+COUTGAIN 
6.29  AT+CTXVOL 
6.30  AT+CTXMICGAIN 
Modify these commands 
V1.02  2016-09-06  6.31   AT+CRXVOL 
6.32   AT+CECH 
6.33   AT+CECDT 
Add these commands 
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6.34   AT+CECWB 
6.35   AT+C NSN 
6.36   AT+CNSLIM 
6.37   AT+C FN S MOD  
6.38   AT+C FN S IN  
6.39   AT+ CFN S LV L 
V1.02  2016-09-06  12.6  AT+CGDRT 
12.7  AT+CGSETV 
12.8  AT+CGGETV 
12.9  AT+CGISR 
Modify these commands 
V1.02  2016-09-07  9.15  AT+CGAUTH  Modify read command and test command 
V1.02  2016-09-09  5.11  AT + C NMP  Modify this command 
V1.02  2016-09-09  3.21  AT&F  Modify this command 
V1.02  2016-09-09  11.5  AT +STKFMT  Modify this command 
V1.02 
2016-09-13 
6.24  AT+SIDET 
Modify this command 
V1.02 
2016-09-13 
4.23  AT+CUSBPIDSWITCH 
Add this command 
V1.02  2016-09-14  6.22  AT+C SDVC  Modify this command 
V1.02  2016-09-18  6.40  AT+C ECRX 
6.41  AT+CNLPPG 
6.42  AT+CNLPPL 
Add these commands 
V1.02  2016-09-19  7.2  AT+CPMS  Modify this command 
V1.02  2016-09-21  10.6  AT+C MTE  Modify this command 
V1.02  2016-09-21  10.9  AT+CUSBDELETEADB Delete this command 
V1.02  2016-09-22  6.43  AT+CECM  Add this command 
V1.02  2016-09-22  15.7.6  AT+CCHRECV  Modify this command 
V1.02  2016-09-22  15.7.10  
Unsolicited common 
channel command <err> Codes 
Modify the format 
V1.02  2016-09-26  6.25  AT+CACDBFN  Modify this command 
V1.02  2016-09-27  15.2.10  AT+CIPFILTERSET  Modify this command 
V1.02  2016-09-28  3.33  AT+C IMI  Modify this command 
V1.02  2016-09-28  3.34  AT+C IMIM  Add this command 
V1.02  2016-09-28  7.13  AT+C MGS 
7.15  AT+CMGW 
7.20  AT+CMGSEX 
Modify these commands 
V1.02  2016-10-08  3.21  AT&F  Modify this command 
V1.02  2016-10-12  9.6  AT+CGTFT  Modify this command 
V1.02  2016-10-13  9.4  AT+CGDCONT  Modify this command 
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V1.02 
2016-10-13 
16.8  AT+CGPSNMEA 
Modify this command 
V1.02  2016-10-17  9.3  AT+CGACT 
9.7  AT+CGQREQ 
9.8  AT+CGEQREQ 
9.9  AT+CGQMIN 
9.10  AT+CGEQMIN 
9.11  AT+CGDATA 
9.12  AT+CGPADDR 
9.15  AT+CGAUTH 
15.1.12  AT + CD N S S RV  
Modify these commands 
V1.02  2016-10-18  7.2  AT+CPMS  Modify this command 
V1.02  2016-10-19  3.21  AT&F  Modify this command 
V1.02  2016-10-20  9.8  AT+CGEQREQ 
9.10  AT+CGEQMIN 
Modify these commands 
V1.02  2016-10-20  12.9  AT+CGISR  Modify this command 
V1.02  2016-10-24  5.13  AT+CNAOP  Modify this command 
V1.02  2016-10-24  3.21  AT&F  Modify this command 
V1.02  2016-10-28  16.20  AT+CGPSMODE  Add this command 
V1.02  2016-11-09  11.4  AT + STK  Modify this command 
V1.02  2016-11-04  6.22  AT+ C SDVC  Modify this command 
V1.02  2016-11-04  16.21  AT + CBDS  Add this command 
V1.02 
2016-11-04 
15.3.9  AT + CFTPGET 
15.3.11  AT+CFTPLIST 
Modify these commands 
V1.02  2016-11-04  15.3.15  AT+CFTPCACHERD  Add this command 
V1.02  2016-11-08  4.23  AT+CUSBPIDSWITCH  Modify this command 
V1.02  2016-11-10  3.21  AT &F  Modify this command 
V1.02  2016-11-10  9.3  AT+CGACT 
9.11  AT + C GD ATA 
Modify these commands 
V1.02  2016-11-10  15.1.1  AT+CSOCKSETPN Modify this command 
V1.03  2016-11-11 4.23  AT+CUSBPIDSWITCH  Modify this command 
V1.03  2016-11-17  16.21  AT + C BDS  Modify this command 
V1.03  2016-11-17  16.15  AT+CGPSINFOCFG  Modify this command 
V1.03  2016-11-24  15.3.9  AT + CFTPGET 
15.3.11  AT+CFTPLIST 
15.3.15  AT+ C FTPCACHERD 
Modify these commands 
V1.03  2016-11-24  15.7.3  AT+CCHOPEN 
15.7.6  AT+CCHRECV 
Modify these commands 
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V1.03 
2016-12-12 
9.3  AT+CGACT 
Modify this command 
V1.03  2016-12-21  9.4  AT+CGDCONT  Modify this command 
V1.03  2016-12-23  3.21  AT&F 
5.11  AT + C NBP 
5.14  AT+CPSI 
Modify these commands 
V1.03  2017-1-4  9.12  AT+CGPADDR  Modify this command 
V1.03  2017-1-11 16.10  AT+CGPSFTM  Modify this command 
V1.03  2017-1-12  5.14  AT+CPSI  Modify this command 
SIMCOM   CONFIDENTIAL FILE

                                                           Smart Machine Smart Decision 
SIM7500_SIM7600 Series_AT Command Manual_V1.03                                          2017-02-10 
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Contents 
Version History ........................................................................................................................... 2 
Contents ............................................................................................................................................ 7 
1 Introduction.................................................................................................................................... 15 
1.1 Scope .................................................................................................................................................... 15 
1.2 References ............................................................................................................................................ 15 
1.3 Terms and abbreviations ....................................................................................................................... 15 
1.4 Definitions and conventions ................................................................................................................. 16 
2 AT Interface Synopsis .................................................................................................................... 18 
2.1 Interface settings .................................................................................................................................. 18 
2.2 AT command syntax ............................................................................................................................. 18 
2.3 Information responses .......................................................................................................................... 19 
3 AT Commands According V.25TER .............................................................................................. 20 
3.1 A/    Repeat last command.................................................................................................................... 20 
3.2 ATD  Dial command .......................................................................................................................... 20 
3.3 ATD><mem><n>  Originate call from specified memory ................................................................. 22 
3.4 ATD><n>    Originate call from active memory (1)............................................................................. 23 
3.5 ATD><str>    Originate call from active memory (2)........................................................................... 24 
3.6 ATA  Call answer ................................................................................................................................ 25 
3.7 ATH    Disconnect existing call ............................................................................................................ 26 
3.8 ATS0    Automatic answer incoming call ............................................................................................. 26 
3.9 +++    Switch from data mode to command mode ............................................................................... 27 
3.10 ATO  Switch from command mode to data mode .............................................................................. 28 
3.11 ATI    Display product identification information ................................................................................ 28 
3.12 AT+IPR    Set local baud rate temporarily ........................................................................................... 30 
3.13 AT+ICF    Set control character framing .............................................................................................. 31 
3.14 AT+IFC    Set local data flow control................................................................................................... 32 
3.15 AT&C    Set DCD function mode ......................................................................................................... 33 
3.16 ATE    Enable command echo .............................................................................................................. 34 
3.17 AT&V    Display current configuration ................................................................................................ 34 
3.18 AT&D    Set DTR function mode ......................................................................................................... 35 
3.19 AT&S    Set DSR function mode .......................................................................................................... 35 
3.20 ATV    Set result code format mode ..................................................................................................... 36 
3.21 AT&F    Set all current parameters to manufacturer defaults ............................................................... 37 
3.22 ATQ    Set Result Code Presentation Mode ......................................................................................... 38 
3.23 ATX    Set CONNECT Result Code Format ........................................................................................ 38 
3.24 AT \V    Set CONNECT Result Code Format About Protocol .............................................................. 39 
3.25 AT&E    Set CONNECT Result Code Format About Speed ................................................................ 40 
3.26 AT&W    Save the user setting to ME .................................................................................................. 41 
3.27 ATZ    Restore the user setting from ME .............................................................................................. 41 
3.28 AT+CGMI  Request manufacturer identification ............................................................................... 42 
3.29 AT+CGMM    Request model identification ........................................................................................ 43 
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3.30 AT+CGMR    Request revision identification ...................................................................................... 43 
3.31 AT+CGSN    Request product serial number identification ................................................................. 44 
3.32 AT+CSCS    Select TE character set .................................................................................................... 45 
3.33 AT+CIMI  Request international mobile subscriber identity ............................................................. 46 
3.34 AT+CIMIM    Request another international mobile subscriber identity ............................................. 47 
3.35 AT+GCAP  Request overall capabilities ............................................................................................ 47 
4 AT Commands for Status Control .................................................................................................. 49 
4.1 AT+CFUN    Set phone functionality ................................................................................................... 49 
4.2 AT+CPIN  Enter PIN.......................................................................................................................... 50 
4.3 AT+CICCID    Read ICCID from SIM card ......................................................................................... 51 
4.4 AT+CSIM  Generic SIM access ......................................................................................................... 52 
4.5 AT+CRSM  Restricted SIM access .................................................................................................... 53 
4.6 AT+SPIC    Times remain to input SIM PIN/PUK ............................................................................... 57 
4.7 AT+CSPN    Get service provider name from SIM .............................................................................. 58 
4.8 AT+CSQ  Query signal quality .......................................................................................................... 59 
4.9 AT+AUTOCSQ    Set CSQ report ........................................................................................................ 60 
4.10 AT+CSQDELTA    Set RSSI delta change threshold ............................................................................ 61 
4.11 AT+CATR    Configure URC destination interface .............................................................................. 62 
4.12 AT+CPOF    Power down the module .................................................................................................. 63 
4.13 AT+CRESET  Reset the module ........................................................................................................ 64 
4.14 AT+CACM    Accumulated call meter ................................................................................................. 64 
4.15 AT+CAMM    Accumulated call meter maximum ............................................................................... 65 
4.16 AT+CPUC  Price per unit and currency table..................................................................................... 66 
4.17 AT+CCLK    Real time clock management .......................................................................................... 67 
4.18 AT+CMEE    Report mobile equipment error ...................................................................................... 68 
4.19 AT+CPAS    Phone activity status ........................................................................................................ 69 
4.20 AT+SIMEI    Set IMEI for the module ................................................................................................. 70 
4.21 AT+SMEID    Request Mobile Equipment Identifier ........................................................................... 71 
4.22 AT+CSVM    Voice Mail Subscriber number ....................................................................................... 72 
4.23 AT + C U S B P I D SWITCH  Change module’s PID................................................................................ 73 
4.24 Indication of EONS .............................................................................................................................. 74 
4.25 Indication of Voice Mail ....................................................................................................................... 74 
5 AT Commands for Network ........................................................................................................... 75 
5.1 AT+CREG  Network registration ....................................................................................................... 75 
5.2 AT+COPS  Operator selection ........................................................................................................... 76 
5.3 AT+CLCK  Facility lock .................................................................................................................... 79 
5.4 AT+CPWD  Change password ........................................................................................................... 80 
5.5 AT+CCUG    Closed user group ........................................................................................................... 82 
5.6 AT+CUSD    Unstructured supplementary service data ....................................................................... 83 
5.7 AT+CAOC    Advice of charge ............................................................................................................ 84 
5.8 AT+CSSN    Supplementary service notifications ................................................................................ 85 
5.9 AT+CPOL    Preferred operator list ...................................................................................................... 87 
5.10 AT+COPN    Read operator names ...................................................................................................... 89 
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5.11 AT+CNMP    Preferred mode selection ................................................................................................ 90 
5.12 AT+CNBP    Preferred band selection .................................................................................................. 91 
5.13 AT+CNAOP    Acquisitions order preference ...................................................................................... 94 
5.14 AT+CPSI    Inquiring UE system information ..................................................................................... 95 
5.15 AT+CNSMOD    Show network system mode ..................................................................................... 98 
5.16 AT+CEREG    EPS network registration status .................................................................................... 99 
5.17 AT+CTZU    Automatic time and time zone update ........................................................................... 101 
5.18 AT+CTZR    Time and time zone reporting ....................................................................................... 102 
5.19 AT+NETMODE    WCDMA & TDSCDMA mode select .................................................................. 104 
6 AT Commands for Call Control ................................................................................................... 105 
6.1 AT+CVHU    Voice hang up control .................................................................................................. 105 
6.2 AT+CHUP    Hang up call .................................................................................................................. 106 
6.3 AT+CBST    Select bearer service type .............................................................................................. 106 
6.4 AT + C R LP    Radio link protocol ........................................................................................................ 108 
6.5 AT+CR    Service reporting control .................................................................................................... 109 
6.6 AT+CRC    Cellular result codes ......................................................................................................... 111 
6.7 AT+CLCC    List current calls............................................................................................................. 112 
6.8 AT+CEER    Extended error report ..................................................................................................... 114 
6.9 AT+CCWA  Call waiting ................................................................................................................... 115 
6.10 AT+CHLD    Call related supplementary services .............................................................................. 116 
6.11 AT+CCFC    Call forwarding number and conditions ......................................................................... 118 
6.12 AT+CLIP    Calling line identification presentation ............................................................................ 119 
6.13 AT+CLIR    Calling line identification restriction .............................................................................. 121 
6.14 AT+COLP    Connected line identification presentation .................................................................... 122 
6.15 AT+VTS    DTMF and tone generation .............................................................................................. 124 
6.16 AT+VTD    Tone duration .................................................................................................................. 125 
6.17 AT+CSTA    Select type of address .................................................................................................... 126 
6.18 AT+CMOD  Call mode .................................................................................................................... 127 
6.19 AT+VMUTE    Speaker mute control................................................................................................. 128 
6.20 AT+CMUT    Microphone mute control ............................................................................................. 129 
6.21 AT+MORING    Enable or disable report MO ring URC................................................................... 129 
6.22 AT+CSDVC    Switch voice channel device ...................................................................................... 130 
6.23 AT+CLVL    Loudspeaker volume level ............................................................................................. 131 
6.24 AT+SIDET  Set sidetone .................................................................................................................. 132 
6.25 AT+CACDBFN    Change default ACDB filename ........................................................................... 133 
6.26 AT+CPCMREG    USB audio control ................................................................................................ 134 
6.27 AT+CMICGAIN    Adjust mic gain ................................................................................................... 135 
6.28 AT+COUTGAIN    Adjust out gain ................................................................................................... 136 
6.29 AT+CTXVOL    Adjust TX voice mic volume .................................................................................. 136 
6.30 AT+CTXMICGAIN    Adjust TX voice mic gain .............................................................................. 137 
6.31 AT+CRXVOL    Adjust RX voice output speaker volume ................................................................. 138 
6.32 AT+CECH  Inhibit far-end echo ....................................................................................................... 139 
6.33 AT+CECDT    Inhibit echo during doubletalk ................................................................................... 140 
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6.34 AT+CECWB    Inhibit echo in the high band ..................................................................................... 141 
6.35 AT+CNSN    MIC NOISE suppression .............................................................................................. 142 
6.36 AT+CNSLIM  MIC NOISE suppression .......................................................................................... 142 
6.37 AT+CFNSMOD  Adjust parameter fnsMode of RX_VOICE_FNS ................................................. 143 
6.38 AT+CFNSIN    Adjust parameter fnsInputGain of RX_VOICE_FNS ............................................... 144 
6.39 AT+CFNSLVL  Adjust parameter fnsTargetNS of RX_VOICE_FNS ............................................. 145 
6.40 AT+CECRX    Enable or disable VOICE_MOD_ENABLE .............................................................. 146 
6.41 AT+CNLPPG    Modify the NLPP_gain in DSP ................................................................................ 147 
6.42 AT+CNLPPL    Modify the NLPP_limit in DSP ................................................................................ 147 
6.43 AT+CECM    Adjust echo canceller ................................................................................................... 148 
7 AT Commands for SMS ............................................................................................................... 150 
7.1 AT+CSMS    Select message service .................................................................................................. 150 
7.2 AT+CPMS  Preferred message storage ............................................................................................ 151 
7.3 AT+CMGF    Select SMS message format ......................................................................................... 153 
7.4 AT+CSCA    SMS service centre address ........................................................................................... 154 
7.5 AT+CSCB    Select cell broadcast message indication ...................................................................... 155 
7.6 AT+CSMP    Set text mode parameters .............................................................................................. 156 
7.7 AT+CSDH    Show text mode parameters .......................................................................................... 157 
7.8 AT+CNMA    New message acknowledgement to ME/TA ................................................................ 158 
7.9 AT+CNMI  New message indications to TE .................................................................................... 159 
7.10 AT+CGSMS    Select service for MO SMS messages ....................................................................... 161 
7.11 AT+CMGL    List SMS messages from preferred store ..................................................................... 162 
7.12 AT+CMGR  Read message .............................................................................................................. 166 
7.13 AT+CMGS  Send message ............................................................................................................... 170 
7.14 AT+CMSS    Send message from storage .......................................................................................... 171 
7.15 AT+CMGW    Write message to memory .......................................................................................... 172 
7.16 AT+CMGD  Delete message ............................................................................................................ 174 
7.17 AT+CMGMT  Change message status ............................................................................................. 175 
7.18 AT+CMVP    Set message valid period .............................................................................................. 176 
7.19 AT+CMGRD    Read and delete message .......................................................................................... 177 
7.20 AT+CMGSEX  Send message .......................................................................................................... 178 
7.21 AT+CMSSEX    Send multi messages from storage .......................................................................... 179 
7.22 AT+CMGP    Set cdma/evdo text mode parameters ........................................................................... 180 
8 AT Commands for Phonebook ..................................................................................................... 182 
8.1 AT+CPBS    Select phonebook memory storage ................................................................................ 182 
8.2 AT+CPBR    Read phonebook entries ................................................................................................ 183 
8.3 AT+CPBF    Find phonebook entries ................................................................................................. 185 
8.4 AT+CPBW    Write phonebook entry ................................................................................................. 186 
8.5 AT+CNUM  Subscriber number ....................................................................................................... 187 
9 AT Commands for GPRS ............................................................................................................. 189 
9.1 AT+CGREG    GPRS network registration status .............................................................................. 189 
9.2 AT+CGATT    Packet domain attach or detach .................................................................................. 190 
9.3 AT+CGACT    PDP context activate or deactivate ............................................................................. 191 
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9.4 AT+CGDCONT  Define PDP context .............................................................................................. 192 
9.5 AT+CGDSCONT    Define Secondary PDP Context ......................................................................... 194 
9.6 AT+CGTFT    Traffic Flow Template ................................................................................................ 197 
9.7 AT+CGQREQ    Quality of service profile (requested) ..................................................................... 200 
9.8 AT+CGEQREQ    3G quality of service profile (requested) .............................................................. 202 
9.9 AT+CGQMIN    Quality of service profile (minimum acceptable) .................................................... 207 
9.10 AT+CGEQMIN    3G quality of service profile (minimum acceptable) ............................................ 210 
9.11 AT+CGDATA    Enter data state ......................................................................................................... 214 
9.12 AT+CGPADDR  Show PDP address ................................................................................................ 215 
9.13 AT + C GCLASS   GPRS mobile station class .................................................................................. 217 
9.14 AT+CGEREP    GPRS event reporting .............................................................................................. 218 
9.15 AT+CGAUTH    Set type of authentication for PDP-IP connections of GPRS .................................. 220 
10 Hardware Related Commands ................................................................................................. 222 
10.1 AT+CVALARM    Low and high voltage Alarm ................................................................................ 222 
10.2 AT+CVAUXS    Set state of the pin named VREG_AUX1 ............................................................... 223 
10.3 AT+CVAUXV    Set voltage value of the pin named VREG_AUX1 ................................................. 224 
10.4 AT+CADC  Read ADC value ........................................................................................................... 225 
10.5 AT+CADC2  Read ADC2 value ....................................................................................................... 225 
10.6 AT+CMTE  Control the module whether power shutdown when the module’s temperature upon the 
critical temperature ......................................................................................................................................... 226 
10.7 AT+CPMVT    Low and high voltage Power Off ............................................................................... 228 
10.8 AT+CDELTA    Set the module go to recovery mode ........................................................................ 229 
10.9 AT+CRIIC    Read values from register of IIC device ....................................................................... 229 
10.10 AT+CWIIC    Write values to register of IIC device .......................................................................... 230 
10.11 AT+CBC    Read the voltage value of the power supply .................................................................... 231 
10.12 AT+CPMUTEMP    Read the temperature of the module .................................................................. 231 
11 AT Commands for SIM Application Toolkit ............................................................................ 233 
11.1 AT + ST I N     S AT I n d i cation ................................................................................................................ 233 
11.2 AT+STGI    Get SAT information ...................................................................................................... 234 
11.3 AT + ST G R   S AT r e s p o n d  .................................................................................................................. 237 
11.4 AT+STK  STK switch ...................................................................................................................... 238 
11.5 AT+STKFMT    Set STK pdu format ................................................................................................. 239 
11.6 AT+STENV    Original STK PDU Envelope Command .................................................................... 240 
11.7 AT+STSM    Get STK Setup Menu List with PDU Mode ................................................................. 241 
12 AT Commands for Hardware ................................................................................................... 242 
12.1 AT+IPREX    Set local baud rate permanently ................................................................................... 242 
12.2 AT+CFGRI    Indicate RI when using URC ....................................................................................... 243 
12.3 AT+CSCLK Control UART Sleep ..................................................................................................... 244 
12.4 AT+CMUX    Enable the multiplexer over the UART ....................................................................... 245 
12.5 AT+CGFUNC Enable/disable the function for the special GPIO ...................................................... 246 
12.6 AT+CGDRT    Set the direction of specified GPIO............................................................................ 247 
12.7 AT+CGSETV    Set the value of specified GPIO ............................................................................... 248 
12.8 AT+CGGETV    Get the value of specified GPIO.............................................................................. 249 
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12.9 AT+CGISR    Set GPIO interrupt trigger condition ........................................................................... 250 
13 AT Commands for File System ................................................................................................ 252 
13.1 AT+FSCD    Select directory as current directory .............................................................................. 252 
13.2 AT+FSMKDIR    Make new directory in current directory ............................................................... 253 
13.3 AT+FSRMDIR    Delete directory in current directory ...................................................................... 254 
13.4 AT+FSLS    List directories/files in current directory ........................................................................ 255 
13.5 AT+FSDEL    Delete file in current directory .................................................................................... 256 
13.6 AT+FSRENAME    Rename file in current directory ........................................................................ 257 
13.7 AT+FSATTRI    Request file attributes .............................................................................................. 258 
13.8 AT+FSMEM    Check the size of available memory .......................................................................... 259 
13.9 AT+FSLOCA    Select storage place .................................................................................................. 259 
13.10 AT+FSCOPY    Copy an appointed file ............................................................................................. 260 
14 AT Commands for File Transmission ...................................................................................... 263 
14.1 AT+CFTRANRX    Transfer a file to EFS ......................................................................................... 263 
14.2 AT+CFTRANTX    Transfer a file from EFS to host ......................................................................... 264 
15 AT Commands for Internet Service ......................................................................................... 265 
15.1 PDP .................................................................................................................................................... 265 
15.1.1 AT+CSOCKSETPN    Set active PDP context’s profile number ................................................................ 265 
15.1.2 AT+CIPDNSSET    Set DNS query parameters .......................................................................................... 266 
15.1.3 AT+CDNSGIP    Query the IP address of given domain name ................................................................... 267 
15.1.4 AT+CDNSGHNAME    Query the domain name of given IP address ........................................................ 268 
15.1.5 AT+CPING    Ping destination address ....................................................................................................... 269 
15.1.6 AT+CPINGSTOP    Stop an ongoing ping session ..................................................................................... 271 
15.1.7 AT+CTCPFIN    Configure TCP FIN ......................................................................................................... 272 
15.1.8 AT+CTCPKA    Conigure TCP heartbeat ................................................................................................... 273 
15.1.9 AT+CTEUTP    Set unknown incoming TCP packet echo .......................................................................... 274 
15.1.10 AT+CUPURE    Set UDP port unreachable ICMP echo ............................................................................. 275 
15.1.11 AT+CINICMPALLOW    Preferred ICMP filter ......................................................................................... 276 
15.1.12 AT+CDNSSRV    Get dns server ip address ............................................................................................... 277 
15.2 TCP/UDP ........................................................................................................................................... 278 
15.2.1 AT+CIPCCFG    Configure parameters of socket ....................................................................................... 278 
15.2.2 AT+CIPSENDMODE    Select sending mode ............................................................................................ 280 
15.2.3 AT+CIPTIMEOUT Set TCP/IP timeout value ............................................................................................ 281 
15.2.4 AT+CIPHEAD    Add an IP head when receiving data ............................................................................... 282 
15.2.5 AT+CIPSRIP    Show Remote IP address and Port ..................................................................................... 283 
15.2.6 AT+CIPMODE    Select TCP/IP application mode .................................................................................... 284 
15.2.7 AT+NETOPEN    Open socket ................................................................................................................... 285 
15.2.8 AT+NETCLOSE  Close socket................................................................................................................. 286 
15.2.9 AT+IPADDR    Inquire socket PDP address ............................................................................................... 287 
15.2.10 AT+CIPFILTERSET    IP filter configuration ............................................................................................ 288 
15.2.11 AT+SERVERSTART  Startup TCP server ................................................................................................ 290 
15.2.12 AT+SERVERSTOP  Stop TCP server ....................................................................................................... 291 
15.2.13 AT+CIPOPEN    Establish connection in multi-socket mode ..................................................................... 292 
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15.2.14 AT+CIPSEND    Send data through TCP or UDP connection .................................................................... 294 
15.2.15 AT+CIPRXGET    Get the network data manually ..................................................................................... 297 
15.2.16 AT+CIPCLOSE    Close TCP or UDP socket ............................................................................................. 299 
15.2.17 AT+CIPSTAT    Inquire the total size of data sent or received ................................................................... 301 
15.2.18 Information elements related to TCP/IP ..................................................................................................... 302 
15.2.19 Unsolicited TCP/IP command <err> Codes ................................................................................................ 302 
15.3 FTP ..................................................................................................................................................... 303 
15.3.1 AT + CFTPPORT    Set FTP server port ....................................................................................................... 303 
15.3.2 AT+CFTPMODE    Set FTP mode ............................................................................................................. 304 
15.3.3 AT+CFTPTYPE    Set FTP type ................................................................................................................. 304 
15.3.4 AT+CFTPSERV    Set FTP server domain name or IP address................................................................... 305 
15.3.5 AT+CFTPUN    Set user name for FTP access ........................................................................................... 306 
15.3.6 AT+CFTPPW    Set user password for FTP access ..................................................................................... 307 
15.3.7 AT+CFTPGETFILE    Get a file from FTP server to EFS .......................................................................... 308 
15.3.8 AT+CFTPPUTFILE    Upload a file from module EFS to FTP server ....................................................... 309 
15.3.9 AT+CFTPGET    Get a file from FTP server and output it to SIO .............................................................. 310 
15.3.10 AT+CFTPPUT    Upload the DATA from SIO to FTP server ..................................................................... 312 
15.3.11 AT+CFTPLIST    List the items in the directory on FTP server ................................................................. 314 
15.3.12 AT+CFTPMKD    Create a new directory on FTP server ........................................................................... 315 
15.3.13 AT+CFTPRMD    Delete a directory on FTP server ................................................................................... 316 
15.3.14 AT+CFTPDELE    Delete a file on FTP server ........................................................................................... 317 
15.3.15 AT+CFTPCACHERD    Output cached data to MCU ................................................................................ 317 
15.3.16 Unsolicited FTP Codes (Summary of CME ERROR Codes) ..................................................................... 319 
15.4 HTTP .................................................................................................................................................. 319 
15.4.1 AT+CHTTPACT      Launch a HTTP operation .......................................................................................... 319 
15.4.2 Unsolicited HTTP codes (summary of CME ERROR codes) ..................................................................... 322 
15.5 HTP .................................................................................................................................................... 322 
15.5.1 AT+CHTPSERV    Set HTP server info ...................................................................................................... 322 
15.5.2 AT+CHTPUPDATE    Updating date time using HTP protocol ................................................................. 324 
15.5.3 Unsolicited HTP Codes .............................................................................................................................. 325 
15.6 SMTP ................................................................................................................................................. 325 
15.6.1 AT+SMTPSRV    Set SMTP server address and port number .................................................................... 325 
15.6.2 AT+SMTPAUTH    SMTP server authentication ........................................................................................ 326 
15.6.3 AT+SMTPFROM    Sender address and name ........................................................................................... 328 
15.6.4 AT+SMTPRCPT    Recipient address and name (TO/CC/BCC) ................................................................ 329 
15.6.5 AT+SMTPSUB  E-mail subject ................................................................................................................ 330 
15.6.6 AT + S MTPBODY  E-mail body ................................................................................................................ 332 
15.6.7 AT+SMTPBCH  E-mail body character set .............................................................................................. 333 
15.6.8 AT+SMTPFILE  Select attachment .......................................................................................................... 334 
15.6.9 AT+SMTPSEND    Initiate session and send e-mail ................................................................................... 336 
15.6.10 AT+SMTPSTOP    Force to stop sending e-mail ........................................................................................ 337 
15.7 Common Channel Service .................................................................................................................. 338 
15.7.1 AT+CCHSTART    Acquire common channel service ................................................................................ 338 
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15.7.2 AT+CCHSTOP    Stop common channel service ........................................................................................ 339 
15.7.3 AT+CCHOPEN    Open a channel .............................................................................................................. 339 
15.7.4 AT+CCHCLOSE    Close a channel ........................................................................................................... 340 
15.7.5 AT+CCHSEND    Send data to peer ........................................................................................................... 341 
15.7.6 AT+CCHRECV    Receive data from the channel ...................................................................................... 342 
15.7.7 AT+CCHSET    Set the parameter of common channel service .................................................................. 344 
15.7.8 AT+CCHADDR    Get the IPv4 address for common channel service ....................................................... 344 
15.7.9 Unsolicited common channel Codes ........................................................................................................... 345 
15.7.10 Unsolicited common channel command <err> Codes ................................................................................ 345 
15.8 SSL Certificate & Key Management .................................................................................................. 346 
15.8.1 AT+CCERTDOWN    Transfer a certificate file to Module ........................................................................ 346 
15.8.2 AT+CCERTLIST    List certificate/key in module ..................................................................................... 347 
15.8.3 AT+CCERTDELE    Delete certificate/key in the module .......................................................................... 348 
16 AT Commands for GPS ........................................................................................................... 349 
16.1 AT+CGPS    Start/Stop GPS session .................................................................................................. 349 
16.2 AT+CGPSINFO    Get GPS fixed position information ..................................................................... 350 
16.3 AT+CGPSCOLD  Cold start GPS .................................................................................................... 352 
16.4 AT+CGPSHOT    Hot start GPS ........................................................................................................ 352 
16.5 AT+CGPSURL  Set AGPS default server URL ............................................................................... 353 
16.6 AT+CGPSSSL    Set AGPS transport security ................................................................................... 354 
16.7 AT+CGPSAUTO    Start GPS automatic ........................................................................................... 354 
16.8 AT+CGPSNMEA    Configure NMEA sentence type ........................................................................ 355 
16.9 AT+CGPSMD  Configure AGPS MO method ................................................................................. 356 
16.10 AT+CGPSFTM    Start GPS test mode .............................................................................................. 357 
16.11 AT+CGPSDEL    Delete the GPS information ................................................................................... 358 
16.12 AT +  C G PSXE    Enable/Disable GPS XTRA function ...................................................................... 359 
16.13 AT+CGPSXD    Download XTRA assistant file ................................................................................ 360 
16.14 AT+CGPSXDAUTO  Download XTRA assistant file automatically............................................... 361 
16.15 AT+CGPSINFOCFG    Report GPS NMEA-0183 sentence .............................................................. 361 
16.16 AT+CGPSPMD  Configure positioning mode ................................................................................. 363 
16.17 AT+CGPSMSB    Configure based mode switch to standalone ......................................................... 364 
16.18 AT+CGPSHOR    Configure positioning desired accuracy ................................................................ 365 
16.19 AT+CGPSNOTIFY    LCS respond positioning request .................................................................... 366 
16.20 AT+CGPSMODE    Configure GPS and GLONASS mode ............................................................... 367 
16.21 AT+CBDS  Enable/Disable BEIDOU session.................................................................................. 367 
16.22 Unsolicited XTRA download Codes .................................................................................................. 368 
17 Appendixes .............................................................................................................................. 369 
17.1 Verbose code and numeric code ......................................................................................................... 369 
17.2 Response string of AT+CEER ............................................................................................................ 369 
17.3 Summary of CME ERROR codes ...................................................................................................... 373 
17.4 Summary of CMS ERROR codes ...................................................................................................... 376 
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1   Introduction 
1.1  Scope 
The present document describes the AT Command Set for the SIMCom Module: 
SIM7600CE-A, SIM7600CE,SIM7500A, SIM7500JE, SIM7500M21 
More information about the SIMCom Module which includes the Software Version information can be 
retrieved by the command ATI. In this document, a short description, the syntax, the possible setting values 
and responses, and some examples of AT commands are presented. 
Prior to using the Module, please read this document and the Version History to know the difference from 
the previous document. 
In order to implement communication successfully between Customer Application and the Module, it is 
recommended to use the AT commands in this document, but not to use some commands which are not 
included in this document. 
1.2  References 
The present document is based on the following standards: 
[1] ETSI GSM 01.04: Abbreviations and acronyms. 
[2] 3GPP TS 27.005: Use of Data Terminal Equipment – Data Circuit terminating Equipment (DTE – 
DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS). 
[3] 3GPP TS 27.007: AT command set for User Equipment (UE). 
[4] WA P -224-WTP-20010710-a 
[5] WA P -230-WSP-20010705-a 
[6] WA P -209-MMSEncapsulation-20010601-a 
1.3  Terms and abbreviations 
For the purposes of the present document, the following abbreviations apply: 
 AT   ATtention; the two-character abbreviation is used to start a command line to be sent 
from TE/DTE to TA/DCE 
 DCE    Data Communication Equipment; Data Circuit terminating Equipment 
 DCS    Digital Cellular Network 
 DTE    Data Terminal Equipment 
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 DTMF    Dual Tone Multi–Frequency 
 EDGE    Enhanced Data GSM Environment 
 EGPRS    Enhanced General Packet Radio Service 
 GPIO    General–Purpose Input/Output 
 GPRS    General Packet Radio Service 
 GSM    Global System for Mobile communications 
 HSDPA   High Speed Downlink Packet Access 
 HSUPA   High Speed Uplink Packet Access 
 I2C    Inter–Integrated Circuit 
 IMEI    International Mobile station Equipment Identity 
 IMSI    International Mobile Subscriber Identity 
 ME    Mobile Equipment 
 MO    Mobile–Originated 
 MS   Mobile Station 
 MT    Mobile–Terminated; Mobile Termination 
 PCS    Personal Communication System 
 PDU    Protocol Data Unit 
 PIN    Personal Identification Number 
 PUK    Personal Unlock Key 
 SIM    Subscriber Identity Module 
 SMS    Short Message Service 
 SMS–SC  Short Message Service – Service Center 
 TA     Terminal Adaptor; e.g. a data card (equal to DCE) 
 TE     Terminal Equipment; e.g. a computer (equal to DTE) 
 UE     User Equipment 
 UMTS    Universal Mobile Telecommunications System 
 USIM    Universal Subscriber Identity Module 
 WCDMA Wideband Code Division Multiple Access 
 FTP         File Transfer Protocol 
 HTTP       Hyper Text Transfer Protocol 
 RTC        Real Time Clock 
 SMTP       Simple Mail Transfer Protocol 
 SMTP client    An client that can transfer text-based e-mail to SMTP server over TCP session 
 URC        Unsolicited Result Code 
1.4  Definitions and conventions 
1. For the purposes of the present document, the following syntactical definitions apply: 
<CR>    Carriage return character. 
<LF>    Linefeed character. 
<…>  Name enclosed in angle brackets is a syntactical element. Brackets themselves do not 
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appear in the command line. 
[…]  Optional subparameter of AT command or an optional part of TA information response 
is enclosed in square brackets. Brackets themselves do not appear in the command line. 
If subparameter is not given, its value equals to its previous value or the recommended 
default value. 
underline  Underlined defined subparameter value is the recommended default setting or factory 
setting. 
2. Document conventions: 
♦ Display the examples of AT commands with Italic format. 
♦ Not display blank-line between command line and responses or inside the responses. 
♦ Generally, the characters <CR> and <LF> are intentionally omitted throughout this document. 
♦ If command response is ERROR, not list the ERROR response inside command syntax. 
NOTE: AT commands and responses in figures may be not following above conventions. 
3. Special marks for commands or parameters: 
SIM PIN    –  Is the command PIN protected? 
    YES   –  AT command can be used only when SIM PIN is READY. 
NO   –  AT command can be used when SIM card is absent or SIM PIN validation is 
pending. 
 References  –  Where is the derivation of command? 
     3GPP TS 27.007   –  3GPP Technical Specification 127 007. 
     V.25ter       –  ITU–T Recommendation V.25ter. 
     Vendor       –  This command is supported by SIMCom. 
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2   AT Interface Synopsis 
2.1  Interface settings 
Between Customer Application and the  Module, standardized RS–232 interface is used for the 
communication, and default values for the interface settings as following: 
115200bps, 8 bit data, no parity, 1 bit stop, no data stream control. 
2.2  AT command syntax 
The  prefix “AT ” or “at” (no  case sensitive) must be included at the beginning of each command line 
(except A/ and +++), and the character <CR> is used to finish a command line so as to issue the command 
line to the Module. It is recommended that a command line only includes a command. 
When Customer Application issues a series of AT commands on separate command lines, leave a pause 
between the preceding and the following command until information responses or result codes are retrieved 
by Customer Application, for example, “OK” is appeared. This advice avoids too many AT commands are 
issued at a time without waiting for a response for each command. 
In the present document, AT commands are divided into three categories: Basic Command, S Parameter 
Command, and Extended Command. 
1. Basic Command 
The format of Basic Command is “AT<x><n>” or “AT&<x><n>”, “<x>” is the command name, and “<n>” 
is/are the parameter(s) for the basic command, and optional. An example of Basic Command is “ATE <n>”, 
which informs the TA/DCE whether received characters should be echoed back to the TE/DTE according to 
the value of “<n>”; “<n>” is optional and a default value will be used if omitted. 
2. S Parameter Command 
The format of S Parameter Command is “AT S<n>=<m>”, “<n>” is the index of the S–register to set, and 
“<m>”  is the value to assign to it. “<m>”  is optional; in this case, the format is  “AT S<n>”, and then a 
default value is assigned. 
3. Extended Command 
The Extended Command has several formats, as following table list: 
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Table 2-1: Types of Extended Command 
Command Type  Syntax  Comments 
Test Command 
AT+<NAME>=? 
Test the existence of the command; give some 
information about the command subparameters. 
Read Command AT+< NA ME>? Check the current values of subparameters. 
Write Command AT+<NAME>=<…>  Set user-definable subparameter values. 
Execution Command AT+ < NA M E> Read non-variable subparameters determined by 
internal processes. 
NOTE: The character “+”  between the prefix “AT ”  and command name may be replaced by other 
character. For example, using “#” or “$”instead of “+”. 
2.3  Information responses 
If the commands included in the command line are supported by the Module and the subparameters are 
correct if presented, some information responses will be retrieved by from the Module. Otherwise, the 
Module will report “ERROR” or “+CME ERROR” or “+CMS ERROR” to Customer Application. 
Information responses start and end with <CR><LF>, i.e. the format of information responses is 
“<CR><LF><response><CR><LF>”. Inside information responses, there may be one or more <CR><LF>. 
Throughout this document, only the responses are presented, and <CR><LF> are intentionally omitted. 
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3  AT Commands According V.25TER 
3.1  A/  Repeat last command 
Description 
This command is used for implement previous AT command repeatedly (except A/), and the return 
value depends on the last AT command. If A/ is 
issued to the Module firstly after power on, the 
response “OK” is only returned. 
SIM PIN References 
NO 
V.25ter 
Syntax 
Execution Command  Responses 
A/ The response the last AT command return 
Examples 
AT+GCAP 
+GCAP:+CGSM,+FCLASS,+DS 
OK 
A/ 
+GCAP:+CGSM,+FCLASS,+DS 
OK 
3.2  ATD  Dial command 
Description 
This command is used to list characters that may be used in a dialling string for making a call or 
controlling supplementary services. 
NOTE:   
1. Support several “P” or “p” in the DTMF string but the valid auto-sending DTMF after characters 
“P” or “p” should not be more than 29. 
2. Auto-sending DTMF after character “P” or “p” should be ASCII character in the set 0-9, *, #.   
SIM PIN References 
NO  V25.ter 
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Syntax 
Execution Commands  Responses 
ATD<n>[<mgsm>][;] 
Originate a voice call successfully: 
OK 
VOICE CALL: BEGIN 
Originate a data call successfully: 
CONNECT [<text>] 
Originate a call unsuccessfully during command execution:
ERROR 
Originate a call unsuccessfully for failed connection recovery: 
NO CARRIER 
Originate a call unsuccessfully for error related to the MT: 
+CME ERROR: <err> 
Defined values 
<n> 
String of dialing digits and optionally V.25ter modifiers dialing digits:   
0  1  2  3  4  5  6  7  8  9  *  #  +  A  B  C 
Following V.25ter modifiers are ignored:   
,  T  P  !  W  @ 
<mgsm> 
String of GSM modifiers: 
I        Activates CLIR (disables presentation of own phone number to called party) 
i        Deactivates CLIR (enables presentation of own phone number to called party) 
G   Activate Closed User Group explicit invocation for this call only 
    g        Deactivate Closed User Group explicit invocation for this call only 
<;> 
The termination character ";" is mandatory to set up voice calls. It must not be used for data and fax 
calls. 
<text> 
CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command. 
<err> 
Service failure result code string;  the string formats please refer 
+CME ERROR result code and 
AT+CMEE command. 
Examples 
ATD10086; 
OK 
VOICE CALL:BEGIN 
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3.3  ATD><mem><n>    Originate call from specified memory 
Description 
This command is used to originate a call using specified memory and index number. 
SIM PIN References 
NO  V.25ter 
Syntax 
Execution Commands 
Responses 
ATD><mem><n>[;]  Originate a voice call successfully: 
OK 
VOICE CALL: BEGIN 
Originate a data call successfully: 
CONNECT [<text>] 
Originate a call unsuccessfully during command execution:
ERROR 
Originate a call unsuccessfully for failed connection recovery: 
NO CARRIER 
Originate a call unsuccessfully for error related to the MT: 
+CME ERROR: <err> 
Defined values 
<mem> 
Phonebook storage: (For detailed description of storages see AT+CP B S ) 
"DC"   ME dialed calls list 
"MC"     ME missed (unanswered received) calls list 
"RC"   ME received calls list 
"SM"   SIM phonebook 
"ME"    UE phonebook 
"FD"    SIM fixed dialing phonebook 
"ON"      MSISDN list 
"LD"      Last number dialed phonebook 
"EN"      Emergency numbers 
<n> 
Integer type memory location in the range of locations available in the selected memory, i.e. the 
index returned by AT+CPBR. 
<;> 
The termination character ";" is mandatory to set up voice calls. It must not be used for data and fax 
calls. 
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<text> 
CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command. 
<err> 
Service failure result code string; the string formats please refer 
+CME ERROR result code and 
AT+CMEE command. 
Examples 
ATD>SM3; 
OK 
VOICE CALL: BEGIN 
3.4  ATD><n>    Originate call from active memory (1) 
Description 
This command is used to originate a call to specified number. 
SIM PIN  References 
NO 
V.25ter 
Syntax 
Execution Commands  Responses 
ATD><n>[;]  Originate a voice call successfully: 
OK 
VOICE CALL: BEGIN 
Originate a data call successfully: 
CONNECT [<text>] 
Originate a call unsuccessfully during command execution: 
ERROR 
Originate a call unsuccessfully for failed connection recovery:
NO CARRIER 
Originate a call unsuccessfully for error related to the MT: 
+CME ERROR: <err> 
Defined values 
<n> 
Integer type memory location in the range of locations available in the selected me
mory, i.e. the          
index number returned by AT +C P B R. 
<;> 
The termination character ";" is mandatory to set up voice calls. It must not be used for data and fax 
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calls. 
<text> 
CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command. 
<err> 
Service failure result code string;  the string formats please refer 
+CME ERROR result code and 
AT+CMEE command. 
Examples 
ATD>2; 
OK 
VOICE CALL: BEGIN 
3.5  ATD><str>    Originate call from active memory (2) 
Description 
This command is used to originate a call to specified number. 
SIM PIN References 
NO  V.25ter 
Syntax 
Execution Commands  Responses 
ATD><str>[;]  Originate a voice call successfully: 
OK 
VOICE CALL: BEGIN 
Originate a data call successfully: 
CONNECT [<text>] 
Originate a call unsuccessfully during command execution: 
ERROR 
Originate a call unsuccessfully for failed connection recovery: 
NO CARRIER 
Originate a call unsuccessfully for error related to the MT:
+CME ERROR: <err> 
Defined values 
<str> 
String type value, which should 
equal to an alphanumeric field in at least one phone book entry in 
the searched memories. <str>  formatted as current TE character set specified by AT+CSCS.<str> 
must be double quoted. 
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<;> 
The termination character ";" is mandatory to set up voice calls. It must not be used for data and fax 
calls. 
<text> 
CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command. 
<err> 
Service failure result code string;  the string formats please refer 
+CME ERROR result code and 
AT+CMEE command. 
Examples 
ATD>”Kobe”; 
OK 
VOICE CALL: BEGIN 
3.6  ATA   Call answer 
Description 
This command is used to make remote station to go off-hook, e.g. answer an incoming call. If there 
is no an incoming call and entering this command to TA, it will be return “NO CARRIER” to TA. 
SIM PIN References 
YES  V.25ter 
Syntax 
Execution Commands 
Responses 
ATA  For voice call: 
OK 
VOICE CALL: BEGIN 
For data call, and TA switches to data mode: 
CONNECT 
No connection or no incoming call: 
NO CARRIER 
Examples 
ATA 
VOICE CALL: BEGIN 
OK 
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3.7   ATH    Disconnect existing call 
Description 
This command is used to disconnect existing call. Before using ATH  command to hang up a voice 
call, it must set AT+CVHU=0. Otherwise, ATH command will be ignored and “OK” response is 
given only.   
This command is also used to disconnect PS data call, and in this 
case it doesn’t depend on the 
value of AT+CVH U . 
SIM PIN References 
NO  V.25ter 
Syntax 
Execution Command  Responses 
ATH 
If AT+CVHU=0: 
VOICE CALL: END: <time> 
OK 
OK 
Defined values 
<time> 
Voice call connection time: 
Format  –  HHMMSS (HH: hour, MM: minute, SS: second) 
Examples 
AT+CVHU=0 
OK 
ATH 
VOICE CALL:END:000017 
OK 
3.8  ATS0  Automatic answer incoming call 
Description 
The S-
parameter command controls the automatic answering feature of the Module. If set to 000, 
automatic answering is disabled, otherwise it causes the Module to answer when the incoming call 
indication (RING) has occurred the number of times indicate
d by the specified value; and the 
setting will not be stored upon power-off, i.e. the default value will be restored after restart. 
SIM PIN References 
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YES 
V.25ter 
Syntax 
Read Command  Responses 
ATS0?  <n> 
OK 
ERROR 
Write Command 
Responses 
ATS0=<n> OK 
ERROR 
Defined values 
<n> 
    000   
Automatic answering mode is disable. (default value when power-on) 
001–255  Enable automatic answering on the ring number specified. 
NOTE: 1.The S-parameter command is effective on voice call and data call. 
2.If  <n> is set too high, the remote party may hang up before the call can be answered 
automatically. 
Examples 
ATS0? 
000 
OK 
ATS0=003 
OK
3.9  +++    Switch from data mode to command mode 
Description 
This command is only available during a connecting PS data call. The +++ 
character sequence 
causes the TA to cancel the data flow over the AT interface and switch to Command Mode. This 
allows to enter AT commands while maintaining the data connection to the remote device. 
NOTE: To prevent the +++ escape sequence from being misinterpreted as data, it must be preceded 
and followed by a pause of at least 1000 milliseconds, and the interval between two ‘+’ character 
can’t exceed 900 milliseconds.
SIM PIN References 
YES 
V.25ter 
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Syntax 
Execution Command  Responses 
+++ 
OK 
Examples 
+++ 
OK 
3.10  ATO    Switch from command mode to data mode 
Description 
ATO is  the corresponding command to the +++ escape sequence. When there is a PS data call 
connected and the TA is in Command Mode, ATO 
causes the TA to resume the data and takes back 
to Data Mode. 
SIM PIN References 
YES  V.25ter 
Syntax 
Execution Command  Responses 
ATO 
TA/DCE switches to Data Mode from Command Mode: 
CONNECT [<baud rate>] 
If connection is not successfully resumed: 
NO CARRIER 
ERROR
Examples 
ATO 
CONNECT 115200 
3.11  ATI   Display product identification information 
Description 
This  command  is used to request the product information, which consists  of manufacturer 
identification, model identification, revision identification, International Mobile station Equipment 
Identity (IMEI) and overall capabilities of the product. 
SIM PIN References 
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NO 
V.25ter 
Syntax 
Execution Command  Responses 
ATI  Manufacturer: <manufacturer> 
Model: <model> 
Revision: <revision> 
IMEI: <sn> 
+GCAP: list of <name>s 
OK 
Defined values 
<manufacturer> 
The identification of manufacturer. 
<model> 
The identification of model. 
<revision> 
The revision identification of firmware. 
<sn> 
Serial number identification, which consists of a single line containing IMEI (International Mobile 
station Equipment Identity) number. 
<name> 
List of additional capabilities: 
 +CGSM     GSM function is supported 
 +FCLASS    FAX function is supported 
 +DS       Data compression is supported 
+ES          Synchronous data mode is supported. 
  +CIS707-A  CDMA data service command set 
  +CIS-856    EVDO data service command set 
  +MS        Mobile Specific command set 
Examples 
ATI 
Manufacturer: SIMCOM INCORPORATED   
Model: SIMCOM_SIM7600C 
Revision: SIM7600C _V1.0 
IMEI: 351602000330570 
+GCAP: +CGSM,+FCLASS,+DS 
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OK 
3.12  AT+IPR  Set local baud rate temporarily 
Description 
This command sets the baud rate of module’s serial interface temporarily, after reboot the baud rate 
is set to value of IPREX.if set to 0,then support autobaud at now,and the value of the IPR will be 
changed to current baudrate when the autobaud is successful. 
SIM PIN References 
NO  V.25ter 
Syntax 
Test Command  Responses 
AT+IPR=? +IPR: (list of supported<speed>s) 
OK 
Read Command 
Responses 
AT+IPR? +IPR: <speed> 
OK 
Write Command  Responses 
AT+IPR=<speed> 
OK 
ERROR 
Execution Command Responses 
AT+IPR Set default value 115200: 
OK 
Defined values 
<speed> 
Baud rate per second: 
0, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800,921600, 
3000000,3200000,3686400,4000000 
Examples 
AT+IPR? 
+IPR: 115200 
OK 
AT+IPR=? 
+IPR:(0,300,600,1200,2400,4800,9600,19200,38400,57600,115200,230400,460800,921600, 
3000000,3200000,3686400,4000000) 
OK 
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AT+IPR=115200 
OK 
AT+IPR=0 
OK 
3.13  AT+ICF  Set control character framing 
Description 
This command sets character framing which contains data bit, stop bit and parity bit. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+ICF=? +ICF: (list of supported<format>s), (list of supported<parity>s) 
OK 
Read Command  Responses 
AT+ICF? +ICF: <format>,<parity> 
OK 
Write Command  Responses 
AT+ICF= 
<format>[,<parity>] 
OK 
ERROR 
Execution Command 
Responses 
AT+ICF Set default value: 
OK 
Defined values 
<format> 
1  –  data bit 8, stop bit 2 
2  –  data bit 8, parity bit 1,stop bit 1 
3  –  data bit 8, stop bit 1 
4  –  data bit 7, stop bit 2 
5  –  data bit 7, parity bit 1,stop bit 1 
6  –  data bit 7, stop bit 1 
<parity> 
0    –  Odd 
1  –  Even 
2  –  mark 
3  –  none 
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Examples 
AT+ICF? 
+ICF: 3,3 
OK 
AT+ICF=? 
+ICF: (1-6),(0-3) 
OK 
AT+ICF=3,3 
OK 
3.14  AT+IFC  Set local data flow control 
Description   
The command sets the flow control mode of the module. 
SIM PIN References 
NO  V.25ter 
Syntax   
Test Command  Responses 
AT+IFC=? +IFC: (list of supported<DCE>s), (list of supported<DTE>s) 
OK 
ERROR 
Read Command  Responses 
AT+IFC? +IFC: <DCE>,<DTE> 
OK 
ERROR 
Write Command  Responses 
AT+IFC=<DCE>[,<DTE>]  OK 
ERROR 
Execution Command 
Responses 
AT+IFC Set default value: 
OK 
ERROR
Defined values 
<DCE> 
0  –  none (default) 
2  –  RTS hardware flow control 
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<DTE> 
0  –  none (default) 
2  –  CTS hardware flow control 
Examples 
AT+IFC? 
+IFC: 0,0 
OK 
AT+IFC=? 
+IFC: (0,2),(0,2) 
OK 
AT+IFC=2,2 
OK 
3.15  AT&C  Set DCD function mode 
Description 
This command determines how the state of DCD PIN relates to the detection of received line signal 
from the distant end. 
SIM PIN References 
NO  V.25ter 
Syntax 
Execution Command  Responses 
AT&C[<value>]  OK 
ERROR 
Defined values 
<value> 
  0  DCD line shall always be on. 
  1  DCD line shall be on only when data carrier signal is present. 
  2  Setting winks(briefly transitions off,then back on)the DCD line when data calls end. 
Examples 
AT&C1 
OK 
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3.16  ATE  Enable command echo 
Description   
This command sets whether or not the TA echoes characters. 
SIM PIN References 
NO  V.25ter 
Syntax 
Execution Command 
Responses 
ATE[<value>]  OK 
ERROR 
Defined values 
<value>
0  –  Echo mode off 
1  –  Echo mode on 
Examples 
ATE1 
OK 
3.17  AT&V  Display current configuration 
Description 
This command returns some of the base configuration parameters settings. 
SIM PIN References 
YES  V.25ter 
Syntax 
Execution Command  Responses 
AT&V <TEXT> 
OK 
ERROR 
Defined values 
<TEXT> 
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All relative configuration information. 
Examples 
AT&V 
&C: 0; &D: 2; &F: 0; E: 1; L: 0; M: 0; Q: 0; V: 1; X: 0; Z: 0; S0: 0; 
S3: 13; S4: 10; S5: 8; S6: 2; S7: 50; S8: 2; S9: 6; S10: 14; S11: 95; 
+FCLASS: 0; +ICF: 3,3; +IFC: 2,2; +IPR: 115200; +DR: 0; +DS: 0,0,2048,6; 
+WS46: 12; +CBST: 0,0,1; 
……
OK 
3.18  AT&D  Set DTR function mode 
Description 
This command determines how the TA responds when DTR PIN is changed from the ON t
o the OFF condition during data mode. 
SIM PIN References 
NO  V.25ter 
Syntax 
Execution Command Responses 
AT&D[<value>] 
OK 
ERROR 
Defined values 
<value> 
  0  TA ignores status on DTR. 
  1  ON->OFF on DTR: Change to Command mode with remaining the connected call 
  2  ON->OFF on DTR: Disconnect call, change to Command mode.During state DTR = 
OFF is auto-answer off. 
Examples 
AT&D1 
OK 
3.19  AT&S  Set DSR function mode 
Description   
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The command determines how the state of DSR pin works. 
SIM PIN References 
YES  V.25ter 
Syntax 
Execution Command  Responses 
AT&S<value> 
OK 
ERROR 
Defined values 
<value> 
  0    DSR line shall always be on. 
  1  DSR line shall be on only when DTE and DCE are connected. 
Examples 
AT&S0 
OK 
3.20  ATV  Set result code format mode 
Description 
This parameter setting determines the contents of the header and trailer transmitted with result 
codes and information responses. 
NOTE: In case of using This command without parameter <value> will be set to 0. 
SIM PIN References 
No 
V.25ter 
Syntax 
Write Command  Responses 
ATV[<value>]  If <value> =0 
0   
If <value> =1 
OK 
Defined values 
<value> 
0  Information response: <text><CR><LF>   
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Short result code format: <numeric code><CR>   
1    Information response: <CR><LF><text><CR><LF>   
Long result code format: <CR><LF><verbose code><CR><LF> 
Examples 
ATV1 
OK 
3.21  AT&F    Set all current parameters to manufacturer defaults 
Description   
This command is used to set all current parameters to the manufacturer defined profile. 
NOTE:List of parameters reset to manufacturer default can be found in defined values,  factory 
default settings restorable with AT&F[<value>]. 
Every ongoing or incoming call will be terminated. 
SIM PIN References 
NO  V.250 
Syntax 
Execution Command  Responses 
AT&F[<value>]  OK 
Defined values 
<value> 
0  —   Set some temporary TA parameters to manufacturer defaults. The setting after power on or reset is 
same as value 0. 
default values 
TA parameters VALUE 
AT+ CAT R  0 
AT+CNBP  ① 0x0002000000400183,0x000001E000000085,0x0
000000000000021 
AT+ CN MP 
2 
AT+CNAOP ② 7,9,4,2,5,3,11 
AT+ CN SDP  2 
AT+CTZU  0 
AT+CVAUXV  2850 
①  SIM7500X&SIM7600X  have different default value, e.g.
, SIM7600CE should be 
0x0002000000400183,0x000007FFFFDF3FFF,0x000000000000003F 
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②The default value of no CDMA/EVDO version is 7,9,5,3,11,2,4 
Examples 
AT&F 
OK 
3.22   ATQ  Set Result Code Presentation Mode 
Description   
Specify whet
her the TA transmits any result code to the TE or not. Text information transmitted in 
response is not affected by this setting 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Write Command  Responses 
ATQ<n> If <n>=0: 
OK 
If <n>=1: 
No Responses 
Execution Command 
Responses 
ATQ Set default value:0 
OK 
No Responses 
Defined values 
<n> 
0  –    DCE transmits result code 
1  –  DCE not transmits result code 
Examples 
ATQ0 
OK 
3.23   ATX  Set CONNECT Result Code Format 
Description   
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This parameter setting determines wheth
er the TA transmits unsolicited result codes or not. The 
unsolicited result codes are 
<CONNECT><SPEED><COMMUNICATION PROTOCOL>[<TEXT>] 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Write Command  Responses 
ATX<VALUE> OK 
ERROR 
Execution Command 
Responses 
ATX Set default value:1 
OK 
ERROR
Defined values 
<value> 
0  –    CONNECT result code returned 
1,2,3,4  –  May be transmits extern result codes according to AT&E and AT\V settings. Refer to 
AT&E. 
Examples 
ATX1 
OK 
3.24   AT\V  Set CONNECT Result Code Format About Protocol 
Description   
This parameter setting determines wh
ether report the communication protocol. If PS call, it also 
determines wether report APN, uplink rate, downlink rate. 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Write Command  Responses 
AT\V<value> OK 
ERROR 
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Execution Command 
Responses 
AT\V  Set default value: 0 
OK 
ERROR 
Defined values 
<value> 
0  –    Don’t report 
1  –  Report communication protocol. And report APN, uplink rate, downlink rate if PS call. 
Refer to AT&E. The maybe communication protocol report include 
“NONE”,”PPPoverUD”,”AV32K”,”AV64K”,”PACKET”. And APN in string format while 
uplink rate and downlink rate in integer format with kb unit. 
Examples 
AT\V0 
OK 
3.25   AT&E  Set CONNECT Result Code Format About Speed 
Description   
This parameter setting determines to report Serial connection rate or Wireless connection speed. It 
is valid only ATX above 0. 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Write Command  Responses 
AT&E<value> OK 
ERROR 
Execution Command 
Responses 
AT&E Set default value: 1 
OK 
Defined values 
<value> 
0  –  Wireless connection speed in integer format. 
1  –  Serial connection rate in integer format. Such as: “115200” 
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Examples 
AT&E0 
OK 
3.26   AT&W  Save the user setting to ME 
Description   
This command will save the user settings to ME w h i c h  s e t  b y AT E ,  AT Q ,  AT V,  AT X ,  AT&C  AT&D ,  
AT& S ,  AT\V, AT+IFC and ATS0. 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Write Command  Responses 
AT&W<value> OK 
ERROR 
Execution Command 
Responses 
AT&W Set default value: 0 
OK 
ERROR
Defined values 
<value> 
0  –    Save 
Examples 
AT&W0 
OK 
3.27   ATZ  Restore the user setting from ME 
Description   
This command will restore the user setting from ME 
which set by ATE, ATQ, ATV, ATX, AT&C 
AT&D, AT& S , AT\Q,  AT \V, and ATS0. 
SIM PIN References 
YES  3GPP TS 27.005 
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Syntax 
Write Command  Responses 
ATZ<value> 
OK 
ERROR 
Execution Command 
Responses 
ATZ Set default value: 0 
OK 
ERROR
Defined values 
<value> 
0  –    Restore 
Examples 
ATZ0 
OK 
3.28  AT+CGMI  Request manufacturer identification 
Description 
This command is used to request 
the manufacturer identification text, which is intended to permit 
the user of the Module to identify the manufacturer. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command Responses 
AT+CGMI=? 
OK 
Execution Command  Responses 
AT+CGMI 
<manufacturer> 
OK 
Defined values 
<manufacturer> 
The identification of manufacturer. 
Examples 
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AT+CGMI 
SIMCOM INCORPORATED 
OK 
3.29  AT+CGMM   Request model identification 
Description 
This command is used to requests model identification text, which is intended to permit the user of 
the Module to identify the specific model. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGMM=? 
OK 
Execution Command 
Responses 
AT+CGMM <model> 
OK 
Defined values 
<model> 
The identification of model. 
Examples 
AT+CGMM 
SIMCOM_SIM7600C 
OK 
3.30  AT+CGMR   Request revision identification 
Description   
This command is used to request product firmware revision identification text, which is intended to 
permit the user of the Module to identify the version. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
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Test Command 
Responses 
AT+CGMR=? OK 
Execution Command 
Responses 
AT+CGMR +CGMR: <revision> 
OK 
Defined values 
<revision> 
The revision identification of firmware. 
Examples 
AT+CGMR 
+CGMR: LE11B01SIM7600C 
OK 
3.31  AT+CGSN   Request product serial number identification 
Description 
This command requests product serial number identification text, which is intended to permit the 
user of the Module to identify the individual ME to which it is connected to. 
SIM PIN References 
NO 
3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CGSN=? OK 
Execution Command  Responses 
AT+CGSN <sn> 
OK 
Defined values 
<sn> 
Serial number identification, which consists of a single line containing the IMEI (International 
Mobile station Equipment Identity) number of the MT. 
If in CDMA/EVDO mode ,it will show ESN(Electronic Serial Number) 
Examples 
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AT+CGSN 
351602000330570 
OK 
AT+CGSN (CDMA/EVDO mode) 
0x8059D1F6 
OK 
3.32  AT+CSCS   Select TE character set 
Description 
Write command informs TA which character set <chest> 
is used by the TE. TA is then able to 
convert character strings correctly between TE and MT character sets. 
Read command shows current setting and test command displays conversion schemes implemented 
in the TA. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CSCS=?  +CSCS: (list of supported <chset>s) 
OK 
Read Command  Responses 
AT+CSCS? +CSCS: <chset> 
OK 
Write Command  Responses 
AT+CSCS=<chset> 
OK 
ERROR 
Execution Command  Responses 
AT+CSCS Set subparameters as default value: 
OK 
Defined values 
<chest> 
Character set, the definition as following: 
“IRA”    International reference alphabet. 
“GSM” GSM default alphabet; this setting causes easily software flow control (XON 
/XOFF) problems. 
“UCS2”  16-bit universal multiple-octet coded character set; UCS2 character strings 
are 
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converted to hexadecimal numbers from 0000 to FFFF. 
Examples 
AT+CSCS=”IRA” 
OK 
AT+CSCS? 
+CSCS:”IRA” 
OK 
3.33  AT+CIMI   Request international mobile subscriber identity 
Description 
Execution command causes the TA to return <IMSI>, which is intended to permit the TE to identify 
the individual SIM card which is attached to MT. 
NOTE: If USIM card contains two apps, like China Telecom 4G card, one RUIM/CSIM app, and 
another USIM app; so there are two IMSI in it; AT+CIMI will return the RUIM/CSIM IMSI; 
AT+CIMIM will return the USIM IMSI; 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CIMI=? OK 
ERROR 
Execution Command 
Responses 
AT+CIMI <IMSI> 
OK 
ERROR 
Defined values 
<IMSI> 
International Mobile Subscriber Identity (string, without double quotes). 
Examples 
AT+CIMI 
460010222028133 
OK 
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3.34  AT+CIMIM  Request another international mobile subscriber identity 
Description 
Execution command causes the TA to return <IMSI>, which is intended to permit the TE to identify 
the individual SIM card which is attached to MT. 
NOTE: If USIM card contains two apps, like China Telecom 4G card, one RUIM/CSIM app, and 
another USIM app; so there are two IMSI in it; AT+CIMIM will return the USIM IMSI; AT+CIMI 
will return the RUIM/CSIM IMSI; 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CIMIM=? OK 
ERROR 
Execution Command 
Responses 
AT+CIMIM 
<IMSI> 
OK 
ERROR 
Defined values 
<IMSI> 
International Mobile Subscriber Identity (string, without double quotes). 
Examples 
AT+CIMIM 
460110222028133 
OK 
3.35  AT+GCAP   Request overall capabilities 
Description 
Execution command causes the TA reports a list of additional capabilities. 
SIM PIN References 
YES 
V.25ter 
Syntax 
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Test Command 
Responses 
AT+GCAP=? OK 
ERROR 
Execution Command 
Responses 
AT+GCAP +GCAP: (list of <name>s) 
OK 
ERROR 
Defined values 
<name> 
List of additional capabilities. 
 +CGSM     GSM function is supported 
 +FCLASS  FAX function is supported 
 +DS       Data compression is supported 
+ES          Synchronous data mode is supported. 
  +CIS707-A   CDMA data service command set 
  +CIS-856    EVDO data service command set 
+MS        Mobile Specific command set 
Examples 
AT+GCAP 
+GCAP:+CGSM,+FCLASS,+DS 
OK 
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4  AT Commands for Status Control 
4.1  AT+CFUN   Set phone functionality 
Description   
This command is used to select the level of functionality <fun> 
in the ME. Level "full 
functionality" is where the highest level of power is 
drawn. "Minimum functionality" is where 
minimum power is drawn. Level of functionality between these may also be specified by 
manufacturers. When supported by manufacturers, ME resetting with <rst> 
parameter may be 
utilized. 
NOTE: AT + C FU N =6 must be used after setting AT+CFUN
=7. If module in offline mode, must 
execute AT + C F U N=6 or restart module to online mode. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CFUN=?  +CFUN: (list of supported <fun>s), (list of supported <rst>s) 
OK 
ERROR 
+CME ERROR: <err> 
Read Command  Responses 
AT+CFUN? +CFUN: <fun> 
OK 
ERROR 
+CME ERROR: <err> 
Write Command 
Responses 
AT+CFUN=<fun>[,<rst>]  OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<fun> 
0  –  minimum functionality 
1  –  full functionality, online mode 
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4  –  disable phone both transmit and receive RF circuits 
5  –  Factory Test Mode 
6  –  Reset 
7  –  Offline Mode 
<rst> 
0  –  do not reset the ME before setting it to <fun> power level 
1  –  reset the ME before setting it to <fun> power level. This value only takes effect when 
<fun> equals 1. 
Examples 
AT+CFUN? 
+CFUN: 1 
OK 
AT+CFUN=0 
OK 
4.2  AT+CPIN   Enter PIN 
Description 
This command is used to send the ME a password which is necessary before it can be operated 
(SIM PIN, SIM PUK, PH-SIM PIN, 
etc.). If the PIN is to be entered twice, the TA shall 
automatically repeat the PIN. If no PIN request is pending, no action is taken towards MT and an 
error message, +CME ERROR, is returned to TE. 
If the PIN required is SIM PUK or SIM PUK2, the second pi
n is required. This second pin, 
<newpin>, is used to replace the old pin in the SIM. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CPIN=? 
OK 
Read Command  Responses 
AT+CPIN? 
+CPIN: <code> 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+CPIN=<pin>[,<newpin>
] 
OK 
ERROR 
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+CME ERROR: <err> 
Defined values 
<pin> 
String type values. 
<newpin> 
String type values. 
<code> 
Values reserved by the present document: 
READY      –  ME is not pending for any password 
SIM PIN      –    ME is waiting SIM PIN to be given 
SIM PUK    –  ME is waiting SIM PUK to be given 
PH-SIM PIN    –  ME is waiting phone-to-SIM card password to be given 
SIM PIN2    –  ME is waiting SIM PIN2 to be given 
SIM PUK2    –  ME is waiting SIM PUK2 to be given 
PH-NET PIN    –  ME is waiting network personalization password to be given 
Examples 
AT+CPIN? 
+CPIN: SIM PUK2 
OK 
4.3  AT+CICCID    Read ICCID from SIM card 
Description   
This command is used to Read the ICCID from SIM card 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CICCID=? 
OK 
Execution Command 
Responses 
AT+CICCID +ICCID: <ICCID> 
OK 
ERROR 
+CME ERROR: <err> 
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Defined values 
<ICCID>
Integrate circuit card identity,  a standard ICCID is a 20-digit serial number of  the SIM card
,          
it presents 
the publish state, network code, publish area, publish date, publish manufacture and 
press serial number of the SIM card. 
Examples 
AT+CICCID 
+ICCID: 898600700907A6019125 
OK 
4.4  AT+CSIM  Generic SIM access 
Description 
This command is used to control the SIM card directly. 
Compared to restricted SIM access command AT+CRSM, AT+CSIM allows the ME to take more 
control over the SIM interface. 
For SIM–ME interface please refer 3GPP TS 11.11. 
NOTE
:
The SIM Application Toolkit functionality is not supported by AT+CSIM. Therefore the 
following SIM commands can not be used: TERMINAL PROFILE,  ENVELOPE, 
FETCH and TEMINAL RESPONSE. 
SIM PIN References 
NO 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CSIM=? OK 
Write Command  Responses 
AT+CSIM=<length>,<com
mand> 
+CSIM: <length>, <response> 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<length> 
Interger type; length of characters that are sent to TE in <command> or <response> 
<command> 
Command passed from MT to SIM card. 
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<response> 
Response to the command passed from SIM card to MT. 
Examples 
AT+CSIM=? 
OK 
4.5  AT+CRSM    Restricted SIM access 
Description   
By using AT+CRSM instead of Generic SIM Access AT+CSIM, TE application has easier but 
more limited access to the SIM database. 
Write command transmits to the MT the SIM <command> and its required parameters. MT handles 
internally all SIM-MT interface locking and file selection routines. As response to the command, 
MT sends the actual SIM information parameters and response data. MT error result code +CME 
ERROR 
may be returned when the command cannot be passed to the SIM, but failure in the 
execution of the command in the SIM is reported in <sw1> and <sw2> parameters. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CRSM=? 
OK 
Write Command  Responses 
AT+CRSM=<command>[,<f
ileID>[,<p1>,<p2>, <p3> 
[,<data>]]] 
+CRSM: <sw1>,<sw2>[,<response>] 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<command> 
Command passed on by the MT to the SIM: 
176  –  READ BINARY 
178  –  READ RECORD 
192  –  GET RESPONSE 
214  –  UPDATE BINARY 
220  –  UPDATE RECORD 
242  –  STAT U S 
203  –  RETRIEVE DATA 
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219  –  SE T  D ATA 
<fileID> 
Identifier for an elementary data file on SIM, if used by <command>. 
The following list the fileID hex value, user needs to convet them to decimal. 
EFs under MF 
  0x2FE2       ICCID 
  0x2F05       Extended Language Preferences 
  0x2F00       EF DIR 
  0x2F06       Access Rule Reference 
EFs under USIM ADF 
0x6F05        Language Indication 
  0x6F07        IMSI 
  0x6F08        Ciphering and Integrity keys 
  0x6F09                C and I keys for pkt switched domain 
  0x6F60        User controlled PLMN selector w/Acc Tech 
  0x6F30        User controlled PLMN selector 
  0x6F31        HPLMN search period 
  0x6F37        ACM maximum value 
  0x6F38        USIM Service table 
  0x6F39        Accumulated Call meter 
  0x6F3E        Group Identifier Level 
  0x6F3F        Group Identifier Level 2 
  0x6F46        Service Provider Name 
  0x6F41        Price Per Unit and Currency table 
  0x6F45        Cell Bcast Msg identifier selection 
  0x6F78        Access control class 
  0x6F7B        Forbidden PLMNs 
  0x6F7E        Location information 
  0x6FAD        Administrative data 
  0x6F48        Cell Bcast msg id for data download 
  0x6FB7        Emergency call codes 
  0x6F50        Cell bcast msg id range selection 
  0x6F73        Packet switched location information 
  0x6F3B        Fixed dialling numbers 
  0x6F3C        Short messages 
  0x6F40        MSISDN 
  0x6F42         SMS parameters 
  0x6F43        SMS Status 
  0x6F49        Service dialling numbers 
  0x6F4B        Extension 2 
  0x6F4C        Extension 3 
  0x6F47        SMS reports 
  0x6F80        Incoming call information 
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  0x6F81        Outgoing call information 
  0x6F82        Incoming call timer 
  0x6F83        Outgoing call timer 
  0x6F4E        Extension 5 
  0x6F4F        Capability Config Parameters 2 
  0x6FB5        Enh Multi Level Precedence and Pri 
  0x6FB6        Automatic answer for eMLPP service 
  0x6FC2        Group identity 
  0x6FC3        Key for hidden phonebook entries 
  0x6F4D        Barred dialling numbers 
  0x6F55        Extension 4 
  0x6F58        Comparison Method information 
  0x6F56        Enabled services table 
  0x6F57        Access Point Name Control List 
  0x6F2C        De-personalization Control Keys 
  0x6F32        Co-operative network list 
  0x6F5B        Hyperframe number 
  0x6F5C        Maximum value of Hyperframe number 
  0x6F61        OPLMN selector with access tech 
  0x6F5D        OPLMN selector 
  0x6F62        HPLMN selector with access technology 
  0x6F06        Access Rule reference 
  0x6F65        RPLMN last used access tech 
  0x6FC4        Network Parameters 
  0x6F11        CPHS: Voice Mail Waiting Indicator 
  0x6F12,        CPHS: Service String Table 
  0x6F13        CPHS: Call Forwarding Flag 
  0x6F14        CPHS: Operator Name String 
  0x6F15        CPHS: Customer Service Profile  
  0x6F16        CPHS: CPHS Information 
  0x6F17        CPHS: Mailbox Number 
  0x6FC5        PLMN Network Name 
  0x6FC6        Operator PLMN List 
  0x6F9F        Dynamic Flags Status 
  0x6F92        Dynamic2 Flag Setting 
  0x6F98        Customer Service Profile Line2 
  0x6F9B        EF PARAMS - Welcome Message 
  0x4F30        Phone book reference file 
  0x4F22        Phone book synchronization center 
  0x4F23        Change counter 
  0x4F24        Previous Unique Identifier 
  0x4F20        GSM ciphering key Kc 
  0x4F52        GPRS ciphering key 
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  0x4F63        CPBCCH information 
  0x4F64        Investigation scan 
  0x4F40        MExE Service table 
  0x4F41        Operator Root Public Key 
  0x4F42        Administrator Root Public Key 
  0x4F43        Third party Root public key 
  0x6FC7        Mail Box Dialing Number 
  0x6FC8        Extension 6 
  0x6FC9        Mailbox Identifier 
  0x6FCA        Message Waiting Indication Status 
  0x6FCD        Service Provider Display Information 
  0x6FD2        UIM_USIM_SPT_TABLE 
  0x6FD9        Equivalent HPLMN 
  0x6FCB        Call Forwarding Indicator Status 
  0x6FD6        GBA Bootstrapping parameters 
  0x6FDA        GBA NAF List 
  0x6FD7        MBMS Service Key 
  0x6FD8        MBMS User Key 
  0x6FCE        MMS Notification 
  0x6FD0        MMS Issuer connectivity parameters 
  0x6FD1        MMS User Preferences 
  0x6FD2         MMS User connectivity parameters 
  0x6FCF         Extension 8 
  0x5031        Object Directory File 
  0x5032        Token Information File 
  0x5033         Unused space Information File 
EFs under Telecom DF 
  0x6F3A        Abbreviated Dialing Numbers 
  0x6F3B        Fixed dialling numbers 
  0x6F3C        Short messages 
  0x6F3D        Capability Configuration Parameters 
  0x6F4F        Extended CCP 
  0x6F40        MSISDN 
  0x6F42        SMS parameters 
  0x6F43        SMS Status 
  0x6F44        Last number dialled 
  0x6F49        Service Dialling numbers 
  0x6F4A        Extension 1 
  0x6F4B        Extension 2 
  0x6F4C        Extension 3 
  0x6F4D        Barred Dialing Numbers 
  0x6F4E        Extension 4 
  0x6F47        SMS reports 
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  0x6F58        Comparison Method Information 
  0x6F54        Setup Menu elements 
  0x6F06        Access Rule reference 
  0x4F20        Image 
  0x4F30        Phone book reference file 
  0x4F22        Phone book synchronization center 
  0x4F23        Change counter 
  0x4F24        Previous Unique Identifier   
<p1>  <p2>  <p3> 
Integer type; parameters to be passed on by the Module to the SIM. 
<data> 
Information which shall be written to the SIM (hexadecimal character format, refer AT+CSCS). 
<sw1>  <sw2> 
Status information fro
m the SIM about the execution of the actual command. It is returned in both 
cases, on successful or failed execution of the command. 
<response> 
Response data in case of a successful completion of the previously issued command. 
“STATUS”  and  “GET RESPONSE” 
commands return data, which gives information about the 
currently selected elementary data field. This information includes the type of file and its size. 
After “READ BINARY” or “READ RECORD” commands the requested data will be returned. 
<response> is empty after “UPDATE BINARY” or “UPDATE RECORD” commands. 
Examples 
AT+CRSM=? 
OK 
4.6  AT+SPIC    Times remain to input SIM PIN/PUK 
Description 
This command is used to inquire times remain to input SIM PIN/PUK. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+SPIC=? OK 
Execution Command  Responses 
AT+SPIC +SPIC: <pin1>,<puk1>,<pin2>,<puk2> 
OK 
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Defined values 
<pin1> 
Times remain to input PIN1 code. 
<puk1> 
Times remain to input PUK1 code. 
<pin2> 
Times remain to input PIN2 code. 
<puk2> 
Times remain to input PUK2 code. 
Examples 
AT+SPIC=? 
OK 
AT+SPIC 
+SPIC: 3,10,0,10 
OK 
4.7  AT+CSPN  Get service provider name from SIM 
Description 
  This command is used to get service provider name from SIM card. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+CSPN=? OK 
ERROR 
Read Command 
Responses 
AT+ CS P N?  +CSPN: <spn>,<display mode> 
OK 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<spn> 
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  String type; service provider name on SIM 
<display mode> 
0    –  doesn’t display PLMN. Already registered on PLMN. 
1  –  display PLMN 
Examples 
AT+CSPN=? 
OK 
AT+CSPN? 
+CSPN: “CMCC”,0 
OK 
4.8  AT+CSQ   Query signal quality 
Description 
This command is used to return received signal strength indication <rssi> and channel bit error rate 
<ber> from the ME. Test command returns values supported by the TA as compound values. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CSQ=?  +CSQ: (list of supported <rssi>s),(list of supported <ber>s) 
OK 
Execution Command 
Responses 
AT+CSQ +CSQ: <rssi>,<ber> 
OK 
ERROR 
Defined values 
<rssi> 
0       –     -113 dBm or less 
1       –     -111 dBm 
2...30       –     -109... -53 dBm 
31      –     -51 dBm or greater 
99       –     not known or not detectable 
100     –     -116 dBm or less 
101      –     -115 dBm 
102…191 –     -114... -26dBm 
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191     –     -25 dBm or greater 
199      –      not known or not detectable 
100…199 –     expand to TDSCDMA, indicate RSCP received 
<ber> 
(in percent) 
0   –  <0.01% 
1   –  0.01% --- 0.1% 
2   –  0.1% --- 0.5% 
3   –  0.5% --- 1.0% 
4   –  1.0% --- 2.0% 
5   –  2.0% --- 4.0% 
6   –  4.0% --- 8.0% 
7   –  >=8.0% 
99  –  not known or not detectable 
Examples 
AT+CSQ 
+CSQ: 22,0 
OK 
4.9  AT+AUTOCSQ    Set CSQ report 
Description 
This command is used to enable  or  disable automatic report CSQ info
rmation, when automatic 
report enabled, the module reports CSQ information every five seconds or only after <rssi>  or 
<ber> is changed, the format of automatic report is “+CSQ: <rssi>,<ber>”. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+AUTOCSQ=?  +AUTOCSQ: (list of supported<auto>s),(list of supported<mod
e>s) 
OK 
Read Command 
Responses 
AT+AUTOCSQ?  +AUTOCSQ: <auto>,<mode> 
OK 
Write Command  Responses 
AT+AUTOCSQ=<auto>[,<
OK 
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mode>] 
ERROR 
Defined values 
<auto> 
0  –  disable automatic report 
1  –  enable automatic report 
<mode> 
0  –  CSQ automatic report every five seconds 
1  –  CSQ automatic report only after <rssi> or <ber> is changed   
NOTE: If the parameter of <mode> is omitted when executing write command, <mode> will be set 
to default value. 
Examples 
AT+AUTOCSQ=? 
+AUTOCSQ: (0-1),(0-1) 
OK 
AT+AUTOCSQ? 
+AUTOCSQ: 1,1 
OK 
AT+AUTOCSQ=1,1 
OK 
+CSQ: 23,0 (when <rssi> or <ber> changing) 
4.10  AT+CSQDELTA  Set RSSI delta change threshold 
Description   
This command is used to set RSSI delta threshold for signal strength reporting. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CSQDELTA=? +CSQDELTA: (list of supported <delta>s) 
OK 
Read Command  Responses 
AT+ CSQDELTA?  +CSQDELTA: <delta> 
OK 
ERROR 
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Write Command 
Responses 
AT+CSQDELTA=<delta> OK 
ERROR 
Execution Command 
Responses 
AT+CSQDELTA Set default value
(
<delta>=5
)
: 
OK 
Defined values 
<delta> 
Range: from 0 to 5. 
Examples 
AT+CSQDELTA? 
+CSQDELTA: 5 
OK 
4.11  AT+CATR    Configure URC destination interface 
Description 
This command is used to configure the serial port which will be used to output URCs. We 
recommend configure a destination port for receiving URC in the system initialization phase, in 
particular, in the case that transmitting large amounts of data, e.g. use TCP/UDP and MT SMS 
related AT command. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CATR=? +CATR: (list of supported <port>s) 
OK 
Read Command  Responses 
AT+ CATR?  +CATR: <port> 
OK 
Write Command  Responses 
AT+CATR=<port> 
OK 
ERROR 
Defined values 
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<port> 
0  –  all ports 
1  –  use UART port to output URCs 
2  –    use MODEM port to output URCs 
3  –  use ATCOM port to output URCs 
4  –  use cmux vritual port1 to output URCs 
5  –  use cmux virtual port2 to output URCs 
6  –  use cmux vritual port3 to output URCs 
7  –  use cmux vritual port4 to output URCs 
Examples 
AT+CATR=1 
OK 
AT+CATR? 
+CATR: 1 
OK 
4.12  AT+CPOF    Power down the module 
Description   
This command is used to power off the module. Once the AT+CPOF command is executed, The 
module will store user data and deactivate from network, and then shutdown. 
SIM PIN  References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CPOF=? OK 
Execution Command  Responses 
AT+CPOF OK 
Examples 
AT+CPOF 
OK 
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4.13  AT+CRESET    Reset the module 
Description 
This command is used to reset the module. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CRESET=? OK 
Execution Command 
Responses 
AT+ CRESET OK 
Examples 
AT+CRESET=? 
OK 
AT+CRESET 
OK 
4.14  AT+CACM   Accumulated call meter 
Description 
This command is used to reset the Advice of Charge related accumulated call meter value in SIM 
file EFACM. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CACM=? 
OK 
ERROR 
Read Command  Responses 
AT+CACM? +CACM: <acm> 
OK 
ERROR 
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+CME ERROR: <err> 
Write Command 
Responses 
AT+CACM=<passwd> OK 
ERROR 
+CME ERROR: <err> 
Execution Command  Responses 
AT+CACM OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<passwd> 
String type, SIM PIN2. 
<acm> 
String type, accumulated call meter value similarly coded as <ccm> under +CAOC. 
Examples 
AT+CACM? 
+CACM: "000000" 
OK 
4.15  AT+CAMM   Accumulated call meter maximum 
Description 
This command is used to set the Advice of Charge related accumulated call meter maximum value 
in SIM file EFACMmax. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CAMM=? 
OK 
ERROR 
Read Command 
Responses 
AT+CAMM? +CAMM: <acmmax> 
OK 
ERROR 
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+CME ERROR: <err> 
Write Command 
Responses 
AT+CAMM= 
<acmmax>[,<passwd>] 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command Responses 
AT+CAMM OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<acmmax> 
String type, accumulated call meter maximum value similarly coded as <ccm> under AT +CAOC, 
value zero disables ACMmax feature. 
<passwd> 
String type, SIM PIN2. 
Examples 
AT+CAMM? 
+CAMM: "000000" 
OK 
4.16  AT+CPUC   Price per unit and currency table 
Description 
This command is used to set the parameters of Advice of Charge related price per unit and currency 
table in SIM file EFPUCT.. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CPUC=? OK 
ERROR 
Read Command  Responses 
AT+CPUC? +CPUC: [<currency>,<ppu>] 
OK 
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ERROR 
+CME ERROR: <err> 
Write Command 
Responses 
AT+CPUC=<currency>,<pp
u>[,<passwd>] 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<currency> 
String type,  three-character currency code (e.g. "GBP", "DEM"),  character 
set as specified by 
command Select TE Character Set AT+CSCS. 
<ppu> 
String type, price per unit, dot is used as a decimal separator. (e.g. "2.66"). 
<passwd> 
String type, SIM PIN2. 
Examples 
AT+CPUC? 
+CPUC: “GBP” , “2.66” 
OK 
4.17  AT+CCLK    Real time clock management 
Description 
This command is used to manage Real Time Clock of the module. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CCLK=? OK 
Read Command  Responses 
AT+CCLK? +CCLK: <time> 
OK 
Write Command  Responses 
AT+CCLK=<time> 
OK 
ERROR 
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Defined values 
<time> 
String type value; format is “yy/MM/dd,hh:mm:ss±zz”
, where characters indicate year (two last 
digits), month, day, hour, minutes, seconds and time zone (indicates the difference, expressed in 
quarters of an hour, betw
een the local time and GMT; three last digits are mandatory, range 
-47…+48). E.g. 6th of May 2008, 14:28:10 GMT+8 equals to “08/05/06,14:28:10+32”. 
NOTE: 1. Time zone is nonvolatile, and the factory value is invalid time zone. 
       2. Command +CCLK? will 
return time zone when time zone is valid, and if time zone is 
00, command +CCLK? will return “+00”, but not “-00”. 
Examples 
AT+CCLK=“08/11/28,12:30:33+32” 
OK 
AT+CCLK? 
+CCLK: “08/11/28,12:30:35+32” 
OK 
AT+CCLK=“08/11/26,10:15:00” 
OK 
AT+CCLK? 
+CCLK: “08/11/26,10:15:02+32” 
OK 
4.18  AT+CMEE   Report mobile equipment error 
Description 
This  command  is used to disable or enable the use of result code “+CME ERROR: <err>” or 
“+CMS ERROR: <err>”  as an indication of an error relating to the functionality of ME;  when 
enabled, the format of <err> can be set to numeric or verbose string. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CMEE=? 
+CMEE: (list of supported <n>s) 
OK 
Read Command  Responses 
AT+CMEE? +CMEE: <n> 
OK 
Write Command 
Responses 
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AT+CMEE=<n> 
OK 
ERROR 
Execution Command  Responses 
AT+CMEE 
Set default value: 
OK 
Defined values 
<n> 
0  –  Disable result code,i.e. only “ERROR” will be displayed. 
1  –  Enable error result code with numeric values. 
2  –  Enable error result code with string values. 
Examples 
AT+CMEE? 
+CMEE: 2 
OK 
AT+CPIN="1234","1234" 
+CME ERROR: incorrect password 
AT+CMEE=0
OK 
AT+CPIN="1234","1234" 
ERROR 
AT+CMEE=1 
OK
AT+CPIN="1234","1234" 
+CME ERROR: 16 
4.19  AT+CPAS   Phone activity status 
Description 
This command is used to return the activity status <pas> of the ME. It can be used to interrogate the 
ME before requesting action from the phone. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CPAS=? 
+CPAS: (list of supported <pas>s) 
OK 
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Execution Command 
Responses 
AT+CPAS +CPAS: <pas> 
OK 
Defined values 
<pas> 
0  –  ready (ME allows commands from TA/TE) 
3  –  ringing (ME is ready for commands from TA/TE, but the ringer is active) 
4  –  call in progress (ME is ready for commands from TA/TE, but a call is in progress) 
Examples 
RING (with incoming call) 
AT+CPAS 
+CPAS: 3 
OK 
AT+CPAS=? 
+CPAS: (0,3,4) 
OK 
4.20  AT+SIMEI    Set IMEI for the module 
Description 
This command is used to set the module’s IMEI value. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+SIMEI=? 
OK 
Read Command  Responses 
AT+ SIMEI? 
+SIMEI: <imei> 
OK 
Write Command  Responses 
AT+SIMEI=<imei> OK 
ERROR 
Defined values 
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<imei> 
The 15-digit IMEI value. 
Examples 
AT+SIMEI=357396012183170 
OK 
AT+SIMEI? 
+SIMEI: 357396012183170 
OK 
AT+SIMEI=? 
OK 
4.21  AT+SMEID    Request Mobile Equipment Identifier 
Description 
Only task effect in 7600CE 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Read Command  Responses 
AT+SMEID? +SMEID: <MEID> 
OK 
ERROR 
Defined values 
<MEID> 
Mobile Equipment Identifier (string, without double quotes). 
Examples 
AT+SMEID? 
+SMEID: A1000021A5906F 
OK 
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4.22  AT+CSVM   Voice Mail Subscriber number 
Description   
Execution command returns the voice mail number related to the subscriber. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CSVM=? +CSVM: (0-1), “(0-9,+)”, (128-255) 
OK 
ERROR 
Read Command  Responses 
AT+CSVM? 
+CSVM: <valid>, “<number>”,<type> 
OK 
ERROR 
Write Command 
Responses 
AT+CSVM=<valid>, 
“<number>”,<type> 
OK 
ERROR 
Defined values 
<valid> 
Whether voice mail number is valid: 
0  –  Voice mail number is invalid. 
1  –  Voice mail number is valid. 
<number> 
String type phone number of format specified by <type>. 
<type> 
Type of address octet in integer format. see also AT+CPBR <type> 
Examples 
AT+CSVM? 
+CSVM: 1 ,"13697252277",129 
OK 
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4.23  AT+CUSBPIDSWITCH  Change module’s PID 
Description   
Execution command change the module’s PID. This command will reset the module. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CUSBPIDSWITCH=?  +CUSBPIDSWITCH: 
(9000,9001,9002,9003,9004,9005,9006,9007),(0-1),(0-1) 
OK 
ERROR 
Read Command 
Responses 
AT+CUSBPIDSWITCH?  +CUSBPIDSWITCH: <pid> 
OK 
ERROR 
Write Command  Responses 
AT+CUSBPIDSWITCH=<p
id>, < reserve1>,< reserve2> 
OK 
ERROR 
Defined values 
<pid> 
This command support pids, 9001 is the default value. 
9000,9001,9002,9003,9004,9005,9006,9007 
< reserve1> 
0 or 1, this value is for the reserve 
< reserve2> 
0 or 1, this value is for the reserve 
Examples 
AT+CUSBPIDSWITCH? 
+CUSBPIDSWITCH: 9001 
OK 
AT+CUSBPIDSWITCH=9001,1,1 
OK 
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4.24  Indication of EONS 
This module supports EONS function; the following table shows the URC related EONS. 
OPL INIT Description 
OPL DONE This indication means EF-OPL has been read successfully. Only 
after this URC is reported, the AT+COPS? can query the network 
name that supports EONS function. 
PNN INIT Description 
PNN DONE 
This indication means EF-PNN has been read successfully 
OPL UPDATING Description 
OPL UPDATING  This indication means the EF-
OPL is updating using OTA message. 
After updating, the “OPL DONE” should report. 
PNN UPDATING Description 
PNN UPDATING This indication means the EF-
PNN is updating using OTA 
message. After updating, the “PNN DONE” should report. 
PNN UPDATING This indication means the EF-
PNN is updating using OTA 
message. After updating, the “PNN DONE” should report. 
4.25  Indication of Voice Mail 
This module supports voice mail function; the subscriber number is configured by AT+CSVM 
command, the following table shows the URC related Voice Mail. 
Box Empty Description 
+VOICEMAIL: EMPTY  This indication means the voice mail box is empty 
New Message Description 
+VOICEMAIL: NEW MSG 
This indication means there is a new voice mail message 
notification received. This is for CPHS. 
Voice Mail Status Updated Description 
+VOICEMAIL: WAITING, 
<count> 
This indication means that there are <count> 
number of  voice 
mail messages that needs to be got.   
Defined values 
< count> 
Count of voice mail message that waits to be got. 
Examples 
+VOICEMAIL: WAITING, <count> 
+VOICEMAIL: WAITING, 5 
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5   AT Commands for Network 
5.1  AT+CREG   Network registration 
Description   
This command is used to control the presentation of an unsolicited result code +CREG: <stat> 
when <n>=1 and there is a change in the ME network registration status, or code +CREG: 
<stat>[,<lac>,<ci>] when <n>=2 and there is a change of the network cell. 
Read command returns the status of result code presentation and an integer <stat> which shows 
whether the network has currently indicat
ed the registration of the ME. Location information 
elements <lac> and <ci> are returned only when <n>=2 and ME is registered in the network. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CREG=? 
+CREG: (list of supported <n>s) 
OK 
Read Command  Responses 
AT+CREG? +CREG: <n>,<stat>[,<lac>,<ci>] 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+CREG=<n> 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command 
Responses 
AT+CREG Set default value
(
<n>=0
)
: 
OK 
Defined values 
<n> 
0  –  disable network registration unsolicited result code   
1  –  enable network registration unsolicited result code +CREG: <stat> 
2  –  
enable network registration and location information unsolicited result code +CREG: 
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<stat>[,<lac>,<ci>] 
<stat> 
0  –  not registered, ME is not currently searching a new operator to register to 
1  –  registered, home network 
2  –  not registered, but ME is currently searching a new operator to register to 
3  –  registration denied 
4  –  unknown 
5  –  registered, roaming 
<lac> 
Two byte location area code in hexadecimal format(e.g.”00C3” equals 193 in decimal). 
NOTE:  The <lac> not supported in CDMA/HDR mode 
<ci> 
Cell Identify in hexadecimal format. 
GSM : Maximum is two byte 
WCDMA : Maximum is four byte 
TDS-CDMA : Maximum is four byte 
NOTE:  The <ci> not supported in CDMA/HDR mode 
Examples 
AT+CREG? 
+CREG: 0,1 
OK 
5.2  AT+COPS    Operator selection 
Description 
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Write command forces an attempt to select and register the GSM/UMTS network operator. <mode> 
is used to select whether the selection is done automatically by the ME or is forced by this 
command to operator <oper> (it shall be given in format <format>). If the selected operator is not 
available, no other operator shall be selected (except <mode>=4). The selected operator name 
format shall apply to further read commands (AT +COPS?) also. <mode>=2 forces an attempt to 
deregister from the network. The selected mode affects to all further network registration (e.g. after 
<mode>=2, ME shall be unregistered until <mode>=0 or 1 is selected). 
Read command returns the current mode and the currently selected operator. If no operator is 
selected, <format> and <oper> are omitted. 
Test command returns a list of quadruplets, each representing an operator present in the network. 
Quadruplet consists of an integer indicating the availability of the operator <stat>, long and short 
alphanumeric format of the name of the operator, and numeric format representation of the operator. 
Any of the formats may be unavailable and should then be an empty field. The list of operators shall 
be in order: home network, networks referenced in SIM, and other networks. 
It is recommended (although optional) that after the operator list TA returns lists of supported 
<mode>s and <format>s. These lists shall be delimited from the operator list by two commas. 
When executing AT+COPS=? , any input from serial port will stop this command. 
SIM PIN References 
YES 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+COPS=? [+COPS: [list of supported (<stat>,long alphanumeric <oper> 
,short alphanumeric <oper>,numeric <oper>[,< AcT>])s] 
[,,(list of supported <mode>s),(list of supported <format>s)]] 
OK 
ERROR 
+CME ERROR: <err> 
Read Command  Responses 
AT+ CO P S?  +COPS: <mode>[,<format>,<oper>[,< AcT>]] 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+COPS=<mode>[,<form
at>[,<oper>[,< AcT>]]] 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command  Responses 
AT+COPS OK 
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Defined values 
<mode> 
0  –  automatic 
1  –  manual 
2  –  force deregister 
3  –  set only <format> 
4  –  manual/automatic 
5  –  
manual,but do not modify the network selection mode(e.g GSM,WCDMA) after 
module resets. 
NOTE: if <mode> is set to 1, 4, 5 in write command, the <oper> is needed. 
<format> 
0  –  long format alphanumeric <oper> 
1  –  short format alphanumeric <oper> 
2
  –  
numeric <oper>
<oper> 
  string type, <format> indicates if the format is alphanumeric or numeric. 
<stat> 
0
  –  
unknown 
1  –  available 
2  –  current 
3  –  forbidden 
<AcT> 
Access technology selected 
0  –  GSM 
1  –  GSM Compact 
2  –  UTRAN 
7  –  EUTRAN 
8  –  CDMA/HDR 
NOTE: the value 8 do not follow the 3gpp spec, we add this value to distinguish cdma/hdr. 
Examples 
AT+COPS? 
+COPS: 0,0,"China Mobile Com",0 
OK 
AT+COPS=? 
+COPS: (2,"China Unicom","Unicom","46001",0),(3,"China Mobile Com","DGTMPT", 
"46000",0),,(0,1,2,3,4,5),(0,1,2) 
OK 
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5.3   AT+CLCK    Facility lock 
Description 
This command is used to lock, unlock or interrogate a ME or a network facility <fac>. Password is 
normally needed to do such actions. When querying the status of a network service (<mode>=2) the 
response line for 'not active' case (<status>
=0) should be returned only if service is not active for 
any <class>. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CLCK=? +CLCK: (list of supported <fac>s) 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+CLCK=<fac>,<mode> 
[,<passwd>[,<class>]] 
OK 
When <mode>=2 and command successful: 
+CLCK:<status>[,<class1>[<CR><LF> 
+CLCK: <status>,<class2> 
[...]] 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<fac> 
"PF"     lock Phone to the very First inserted SIM card or USIM card 
"SC" lock SIM card or USIM card 
"AO"    Barr All Outgoing Calls 
"OI"      Barr Outgoing International Calls 
"OX"  Barr Outgoing International Calls except to Home Country 
"AI"    Barr All Incoming Calls 
"IR"     Barr Incoming Calls when roaming outside the home country 
"AB"    All Barring services (only for <mode>=0) 
"AG"  All outGoing barring services (only for <mode>=0) 
"AC"      All inComing barring services (only for <mode>=0) 
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"FD"  SIM fixed dialing memory feature 
"PN" Network Personalization 
"PU"    network subset Personalization 
"PP"    service Provider Personalization 
"PC"    Corporate Personalization 
<mode> 
0  –  unlock 
1  –  lock 
2  –  query status 
<status> 
0  –  not active 
1  –  active 
<passwd> 
Password. 
string type; shall be the same as password specified for the facility from the ME user interface or 
with command Change Password +CPWD 
<classX> 
It is a sum of integers each representing a class of information (default 7): 
1    –  voice (telephony) 
2    –  data (refers to all bearer services) 
4    –  fax (facsimile services) 
8    –  short message service 
16   –  data circuit sync 
32    –  data circuit async 
64   –  dedicated packet access 
128  –  dedicated PAD access 
255  –    The value 255 covers all classes 
Examples 
AT+CLCK="SC",2 
+CLCK: 0 
OK 
5.4  AT+CPWD   Change password 
Description 
Write 
command sets a new password for the facility lock function defined by command Facility 
Lock AT +CLCK. 
Test command returns a list of pairs which present the available facilities and the maximum length 
of their password. 
SIM PIN References 
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YES 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CPWD=? +CPWD:    (list of supported (<fac>,<pwdlength>)s) 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+CPWD= 
<fac>,<oldpwd>,<newpwd> 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<fac> 
Refer Facility Lock +CLCK for other values: 
"SC"   SIM or USIM PIN1 
"P2"      SIM or USIM PIN2 
"AB"  All Barring services 
"AC"  All inComing barring services (only for <mode>=0) 
"AG"  All outGoing barring services (only for <mode>=0) 
"AI"   Barr All Incoming Calls 
"AO"  Barr All Outgoing Calls 
"IR"   Barr Incoming Calls when roaming outside the home country 
"OI"   Barr Outgoing International Calls 
"OX"  Barr Outgoing International Calls except to Home Country 
<oldpwd> 
String type, it shall be the same as password specified for the facility from the ME user interface or 
with command Change Password AT+CPWD. 
<newpwd> 
String type, it is the new password; maximum 
length of password can be determined with 
<pwdlength>. 
<pwdlength> 
Integer type, max length of password. 
Examples 
AT+CPWD=? 
+CPWD: ("AB",4),("AC",4),("AG",4),("AI",4),("AO",4),("IR",4),("OI",4),("OX",4),( 
"SC",8),("P2",8)   
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OK 
5.5  AT+CCUG   Closed user group 
Description 
This command allows control of the Closed User Group supplementary service. Set command 
enables the served subscriber to select a CUG index, to suppress the Outgoing Access (OA), and to 
suppress the preferential CUG. 
NOTE: This command not supported in CDMA/HDR mode. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CCUG=? OK 
ERROR 
Read Command  Responses 
AT+CCUG? +CCUG: <n>,<index>,<info> 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+CCUG= 
<n>[,<index>[,<info>]] 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command 
Responses 
AT+CCUG Set default value: 
OK 
Defined values 
<n> 
0  –  disable CUG temporary mode 
1  –  enable CUG temporary mode 
<index> 
0...9  –  CUG index 
10  –  no index (preferred CUG taken from subscriber data) 
<info> 
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0  –  no information 
1  –  suppress OA 
2  –  suppress preferential CUG 
3  –  suppress OA and preferential CUG 
Examples 
AT+CCUG? 
+CCUG: 0,0,0   
OK 
5.6  AT+CUSD   Unstructured supplementary service data 
Description 
This command 
allows control of the Unstructured Supplementary Service Data (USSD). Both 
network and mobile initiated operations are supported. Parameter <n> is used to disable/enable the 
presentation of an unsolicited result code (USSD response from the network, or network initiated 
operation) +CUSD: <m>[,<str>,<dcs>] to the TE. In addition, value <n>
=2 is used to cancel an 
ongoing USSD session. 
NOTE: This command not supported in CDMA/HDR mode. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CUSD=? +CUSD: (list of supported <n>s) 
OK 
Read Command  Responses 
AT+ CU SD?  +CUSD: <n> 
OK 
Write Command 
Responses 
AT+CUSD= 
<n>[,<str>[,<dcs>]] 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command  Responses 
AT+CUSD 
Set default value (<n>=0): 
OK 
Defined values 
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<n> 
0  –  disable the result code presentation in the TA 
1  –  enable the result code presentation in the TA 
2  –  cancel session (not applicable to read command response) 
<str> 
String type USSD-string. 
<dcs> 
Cell Broadcast Data Coding Scheme in integer format (default 0). 
<m> 
0  –  no further user action required (network initiated USSD-
Notify, or no further 
information needed after mobile initiated operation) 
1  –  further user action required (network initiated USSD-Request, or further information 
needed after mobile initiated operation) 
2  –  USSD terminated by network 
4  –  operation not supported 
5  –  network time out 
Examples 
AT+CUSD? 
+CUSD: 1 
OK 
AT+CUSD=0 
OK 
5.7  AT+CAOC   Advice of charge 
Description 
This  command  refers to Advice of Char
ge supplementary service that enables subscriber to get 
information about the cost of calls. With <mode>=0, the execute command returns the current call 
meter value from the ME. 
This command also includes the possibility to enable an unsolicited event reporting of the CCM 
information. The unsolicited result code +CCCM: <ccm> is sent when the CCM value changes, but 
not more that every 10 seconds. Deactivation of the unsolicited event reporting is made with the 
same command. 
NOTE: This command not supported in CDMA/HDR mode. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
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AT+CAOC=? +CAOC: (list of supported <mode>s) 
OK 
ERROR 
Read Command 
Responses 
AT+CAOC? +CAOC: <mode> 
OK 
ERROR 
+CME ERROR: <err> 
Write Command 
Responses 
AT+CAOC=<mode> +CAOC: <ccm> 
OK 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command  Responses 
AT+ CAOC Set default value (<mode>=1): 
OK 
ERROR 
Defined values 
<mode> 
0  –  query CCM value 
1  –  deactivate the unsolicited reporting of CCM value 
2  –  activate the unsolicited reporting of CCM value 
<ccm> 
String type, three bytes of the current call meter value in hexadecimal format (e.g. "00001E" 
indicates decimal value 30), value is in home units and bytes are similarly coded as ACMmax value 
in the SIM. 
Examples 
AT+CAOC=0 
+CAOC: "000000" 
OK 
5.8  AT+CSSN   Supplementary service notifications 
Description 
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This command refers to supplementary service related network initiated notifications. The set 
command enables/disables the presentation of notification result codes from TA to TE. 
When  <n>
=1 and a supplementary service notification is received after a mobile originated call 
setup, intermediate result code +CSSI: <code1>[,<index>] is sent to TE before any other MO call 
setup result codes presented in the present document. When several different <code1>s are received 
from the network, each of them shall have its own +CSSI result code. 
When <m>
=1 and a supplementary service notification is received during a mobile terminated call 
setup or during a call, or when a forwar
d check supplementary service notification is received, 
unsolicited result code +CSSU: <code2>[,<index>[,<number>,<type>[,<subaddr>,<satype>
]]] is 
sent to TE. In case of MT call setup, result code is sent after every +CLIP result code (refer 
command "Calling line identification presentation +CLIP") and when several different <code2>s 
are received from the network, each of them shall have its own +CSSU result code. 
NOTE: This command not supported in CDMA/HDR mode. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CSSN=? +CSSN: (list of supported <n>s),(list of supported <m>s) 
OK 
ERROR 
Read Command  Responses 
AT+ CS S N?  +CSSN: <n>,<m> 
OK 
ERROR 
Write Command  Responses 
AT+CSSN=<n>[,<m>]  OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<n> 
Parameter sets/shows the +CSSI result code presentation status in the TA: 
0  –  disable 
1  –  enable 
<m> 
Parameter sets/shows the +CSSU result code presentation status in the TA: 
0  –  disable 
1  –  enable 
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<code1> 
0  –  unconditional call forwarding is active 
1  –  some of the conditional call forwarding are active 
2  –  call has been forwarded 
3  –  call is waiting 
5  –  outgoing calls are barred 
<index> 
Refer "Closed user group +CCUG". 
<code2> 
0  –  this is a forwarded call (MT call setup) 
2  –  call has been put on hold (during a voice call) 
3  –  call has been retrieved (during a voice call) 
5  –  call on hold has been released (this is not a SS notification) (during a voice call) 
<number> 
String type phone number of format specified by <type>. 
<type> 
T
ype of address octet in integer format; default 145 when dialing string includes international 
access code character "+", otherwise 129. 
<subaddr> 
String type sub address of format specified by <satype>. 
<satype> 
Type of sub address octet in integer format, default 128. 
Examples 
AT+CSSN=1,1 
OK 
AT+CSSN? 
+CSSN: 1,1 
OK 
5.9  AT+CPOL   Preferred operator list 
Description   
This command is used to edit the SIM preferred list of networks. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CPOL=? +CPOL: (list of supported <index>s), (list of supported <format>s) 
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OK 
ERROR 
Read Command  Responses 
AT +C PO L?   [+CPOL:<index1>,<format>,<oper1>[<GSM_AcT1>,<GSM_Com
pact_AcT1>,<UTRAN_AcT1>,<LTE_AcT1>][<CR><LF> 
+CPOL: 
<index2>,<format>,<oper2>[,<GSM_AcT1>,<GSM_Compact_Ac
T1>,<UTRAN_AcT1>,<LTE_AcT1>] 
[...]]] 
OK 
ERROR 
Write Command  Responses 
AT+CPOL=<index> 
[,<format>[,<oper>][,<GSM
_AcT1>,<GSM_Compact_A
cT1>,<UTRAN_AcT1>,<LT
E_AcT1> ]] 
NOTE: 
If using USIM card, 
the last four parameters must 
set. 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<index> 
Integer type, the order number of operator in the SIM preferred operator list. 
If only input <index>, command will delete the value indicate by <index>. 
<format> 
0  –  long format alphanumeric <oper> 
1  –  short format alphanumeric <oper> 
2  –  numeric <oper> 
<operX> 
String type. 
<GSM_AcT
n
> 
GSM access technology: 
0  –  access technology not selected 
1  –  access technology selected 
<GSM_Compact_AcTn> 
GSM compact access technology: 
0  –  access technology not selected 
1  –  access technology selected 
<UTRA_AcTn> 
UTRA access technology: 
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0  –  access technology not selected 
1  –  access technology selected 
<LTE_AcTn> 
LTE access technology: 
0  –  access technology not selected 
1  –    access technology selected 
Examples 
AT+CPOL? 
+CPOL: 1,2,"46001",0,0,1,0 
OK 
AT+CPOL=? 
+CPOL: (1-8),(0-2) 
OK 
5.10  AT+COPN   Read operator names 
Description 
This command is used to 
return the list of operator names from the ME. Each operator code 
<numericX> that has an alphanumeric equivalent <alphaX> in the ME memory shall be returned. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+COPN=? OK 
ERROR 
Write Command 
Responses 
AT+ CO P N +COPN:<numeric1>,<alpha1>[<CR><LF> 
+COPN: <numeric2>,<alpha2> 
[...]] 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<numericX> 
String type, operator in numeric format (see AT +COPS). 
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<alphaX> 
String type, operator in long alphanumeric format (see AT+COPS). 
Examples 
AT+COPN 
+COPN: "46000","China Mobile Com" 
+COPN: "46001"," China Unicom" 
…… 
OK 
5.11  AT+CNMP   Preferred mode selection 
Description 
This command is used to select or set the state of the mode preference. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CNMP=? +CNMP: (list of supported <mode>s) 
OK 
Read Command 
Responses 
AT+ CN MP?  +CNMP: <mode> 
OK 
Write Command 
Responses 
AT+CNMP=<mode> OK 
If <mode> not supported by module, this command will return 
ERROR. 
ERROR 
Defined values 
<mode> 
2    –  Automatic 
13  –  GSM Only 
14  –  WCDMA Only 
38  –  LTE Only 
59  –  TDS-CDMA Only(must use after AT+NETMODE, please refer to AT+NETMODE 
command description) 
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9   –  CDMA Only 
10  –  EVDO Only 
19  –  GSM+WCDMA Only 
22  –  CDMA+EVDO Only 
48  –  Any modes but LTE 
60  –  GSM+TDSCDMA Only 
63  –  GSM+WCDMA+TDSCDMA Only 
67  –  CDMA+EVDO+GSM+WCDMA+TDSCDMA Only 
39  –  GSM+WDMA+LTE Only 
54  –  WDMA+LTE Only 
Examples 
AT+CNMP=13 
OK 
AT+CNMP? 
+CNMP: 2 
OK 
5.12  AT+CNBP   Preferred band selection 
Description 
This command is used to select or set the state of the band preference. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CNBP? +CNBP: <mode>[,<lte_mode>][,<tds_mode>] 
OK 
Write Command  Responses 
AT+CNBP=<mode>[,<lte_
mode>][,<tds_mode>] 
OK 
ERROR 
Defined values 
<mode> 
64bit number, the value is “1” << “<pos>”, then or by bit. 
Some special mode value declared below: 
0x40000000                  BAND_PREF_NO_CHANGE 
<pos> 
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Value: 
0xFFFFFFFF7FFFFFFF     Any (any value) 
7            GSM_DCS_1800 
8              GSM_EGSM_900 
9        GSM_PGSM_900 
16      GSM_450 
17            GSM_480 
18            GSM_750 
19            GSM_850 
20            GSM_RGSM_900 
21            GSM_PCS_1900 
22            WCDMA_IMT_2000 
23       WCDMA_PCS_1900 
24            WCDMA_III_1700 
25            WCDMA_IV_1700 
26            WCDMA_850 
27            WCDMA_800 
48            WCDMA_VII_2600 
49            WCDMA_VIII_900 
50            WCDMA_IX_1700 
<lte_mode> 
64bit number, the value is “1” << “<lte_pos>”, then or by bit. 
<lte_pos> 
Value: 
0x000007FF3FDF3FFF      Any (any value) 
0      EUTRAN_BAND1(UL:1920-1980; DL:2110-2170) 
1      EUTRAN_BAND2(UL:1850-1910; DL:1930-1990) 
2      EUTRAN_BAND3(UL:1710-1785; DL:1805-1880) 
3      EUTRAN_BAND4(UL:1710-1755; DL:2110-2155) 
4      EUTRAN_BAND5(UL: 824-849; DL: 869-894) 
5      EUTRAN_BAND6(UL: 830-840; DL: 875-885) 
6      EUTRAN_BAND7(UL:2500-2570; DL:2620-2690) 
7      EUTRAN_BAND8(UL: 880-915; DL: 925-960) 
8          EUTRAN_BAND9(UL:1749.9-1784.9; DL:1844.9-1879.9) 
9      EUTRAN_BAND10(UL:1710-1770; DL:2110-2170) 
10            EUTRAN_BAND11(UL:1427.9-1452.9; DL:1475.9-1500.9) 
11      EUTRAN_BAND12(UL:698-716; DL:728-746) 
12      EUTRAN_BAND13(UL: 777-787; DL: 746-756) 
13      EUTRAN_BAND14(UL: 788-798; DL: 758-768) 
16      EUTRAN_BAND17(UL: 704-716; DL: 734-746) 
17      EUTRAN_BAND18(UL: 815-830; DL: 860-875) 
18      EUTRAN_BAND19(UL: 830-845; DL: 875-890) 
19      EUTRAN_BAND20(UL: 832-862; DL: 791-821) 
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20            EUTRAN_BAND21(UL: 1447.9-1462.9; DL: 1495.9-1510.9) 
22      EUTRAN_BAND23(UL: 2000-2020; DL: 2180-2200) 
23            EUTRAN_BAND24(UL: 1626.5-1660.5; DL: 1525 -1559) 
24      EUTRAN_BAND25(UL: 1850-1915; DL: 1930 -1995) 
25      EUTRAN_BAND26(UL: 814-849; DL: 859 -894) 
26            EUTRAN_BAND27(UL: 807.5-824; DL: 852 -869) 
27      EUTRAN_BAND28(703-748; DL: 758-803) 
28      EUTRAN_BAND29(UL:1850-1910 or 1710-1755; 
DL:716-728) 
29      EUTRAN_BAND30(UL: 2305-2315 ; DL: 2350 - 2360) 
32      EUTRAN_BAND33(UL: 1900-1920; DL: 1900-1920) 
33      EUTRAN_BAND34(UL: 2010-2025; DL: 2010-2025) 
34      EUTRAN_BAND35(UL: 1850-1910; DL: 1850-1910) 
35      EUTRAN_BAND36(UL: 1930-1990; DL: 1930-1990) 
36      EUTRAN_BAND37(UL: 1910-1930; DL: 1910-1930) 
37      EUTRAN_BAND38(UL: 2570-2620; DL: 2570-2620) 
38      EUTRAN_BAND39(UL: 1880-1920; DL: 1880-1920) 
39      EUTRAN_BAND40(UL: 2300-2400; DL: 2300-2400) 
40      EUTRAN_BAND41(UL: 2496-2690; DL: 2496-2690) 
41      EUTRAN_BAND42(UL: 3400-3600; DL: 3400-3600) 
42      EUTRAN_BAND43(UL: 3600-3800; DL: 3600-3800) 
<tds_mode> 
64bit number, the value is “1” << “<tds_pos>”, then or by bit. 
<tds_pos> 
Value: 
0x000000000000003F      Any (any value) 
0            TDS Band A (1900-1920 MHz, 2010-2020 MHz) 
1      TDS Band B (1850-1910 MHz, 1930-1990 MHz) 
2            TDS Band C (1910-1930 MHz) 
3            TDS Band D (2570-2620 MHz) 
4            TDS Band E (2300-2400 MHz) 
5            TDS Band F (1880-1920 MHz) 
<term_mode> 
0  –  term permanent 
1  –  term until a power cycle 
Examples 
AT+CNBP=0x000700000FFF0380 
OK 
AT+CNBP? 
+CNBP: 0x0000000000400003,0x000007FF03DF3FFF,0x000000000000003F 
OK 
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5.13  AT+CNAOP   Acquisitions order preference 
Description 
This command is used to reset the state of acquisitions order preference. 
SIM PIN References 
NO Vendor 
Syntax 
Read Command  Responses 
AT+CNAOP?  +CNAOP: <mode>[,<sys_mode1>,[<sys_mode2>[,<sys_mode3>[,
<sys_mode4>[,<sys_mode5>[,<sys_mode6>]]]]]] 
OK 
Write Command  Responses 
AT+CNAOP=<mode>[,<sys
_mode1>[,<sys_mode2>[,<sy
s_mode3>[,<sys_mode4>[,<s
ys_mode5>[,<sys_mode6>]]]
]]] 
OK 
ERROR 
Defined values 
<mode> 
7  –  Acquistion by priority order list <sys_moden>s. 
<sys_moden> 
sys_mode values: 
2  –  CDMA 
3  –  GSM 
4  –  HDR 
5  –  WCDMA 
9  –  LTE 
11    –  TDSCDMA 
Examples 
AT+CNAOP=7,9,5,3,11,2,4 
OK 
AT+CNAOP? 
+CNAOP: 7,9,5,3,11,2,4 
OK 
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5.14   AT+CPSI   Inquiring UE system information 
Description   
This command is used to return the UE system information. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CPSI=? +CPSI:   (scope of <time>) 
OK 
Read Command  Responses 
AT+CPSI? If camping on a gsm cell: 
+CPSI:<System Mode>,<Operation Mode>,<MCC>-<MNC>,<L
AC>,<Cell ID>,<Absolute RF Ch Num>,<RxLev>, 
<Track LO Adjust>,<C1-C2> 
OK 
If camping on a wcdma cell: 
+CPSI:  <System Mode>,<Operation Mode>,<MCC>-<MNC>,<
LAC>,<Cell ID>,<Frequency  Band>,<PSC>,<Freq>,<SSC>,<EC
/IO>,<RSCP>,<Qual>,<RxLev>,<TXPWR> 
OK 
If camping on a tds-cdma cell: 
+CPSI:  <System Mode>,<Operation Mode>,<MCC>-<MNC>,<
LAC>,<Cell ID>,<Frequency  Band>,<Uarfcn>,<Cpid> 
OK 
If camping on a lte cell: 
+CPSI: <System Mode>,<Operation Mode>[,<MCC>-<MNC>,<
TAC>,<SCellID>,<PCellID>,<Frequency  Band>,<earfcn>,<dlb
w>,<ulbw>,<RSRQ>,<RSRP>,<RSSI>,<RSSNR>] 
OK 
If camping on a cdma/evdo cell: 
+CPSI: CDMA,<Operation Mode>[,<MCC>-
<MNC>,<CDMA ch 
num>,<CDMA pilot PN>,<CDMA 
RX Chain 0 AGC>,<CDMA 
RX Chain 1 AGC>,<CDMA Chain 0 LNA>,<CDMA Chain 1 
LNA>,<CDMA TX AGC>,<SID>,<NID>,<CDMA 
EC/IO>,<BID>] 
+CPSI:  EVDO,<Operation Mode>[,<MCC>-
<MNC>,<EVDO ch 
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num>,<EVDO RX Chain 0 AGC>,<EVDO RX Chain 1 AGC>,< 
EVDO TX AGC>,<EVDO Serving PN>,<
EVDO Rel0 
SCI>,<EVDO RelA SCI>,<EVDO EC/IO>] 
OK 
If camping on 1xlte cell: 
+CPSI: CDMA,<Operation Mode>[,<MCC>-
<MNC>,<CDMA ch 
num>,<CDMA pilot PN>,<CDMA RX Chain 0 AGC>,<CDMA 
RX Chain 1 AGC>,<CDMA Chain 0 LNA>,<CDMA Chain 1 
LNA>,<CDMA TX AGC>,<SID>,<NID>,<CDMA 
EC/IO>,<BID>] 
+CPSI: LTE,<Operation Mode>[,<MCC>-<MNC>,<TAC>,<SCe
llID>,<PCellID>,<Frequency  Band>,<earfcn>,<dlbw>,<ulbw>,<R
SRQ>,<RSRP>,<RSSI>,<RSSNR>] 
OK 
If  no service: 
+CPSI:  NO SERVICE, Online 
OK 
ERROR 
Write Command  Responses 
AT+CPSI=<time> 
OK 
ERROR 
Defined values 
<time> 
The range is 0-255, unit is second, after set <time> will report the system information every the 
seconds. 
<System Mode> 
System mode, values: “NO SERVICE”, “GSM”, “WCDMA”, “LTE ”, “TDS”… 
If module in LIMITED SERVICE state and +CNLSA command is set to 1, the system mode will 
display as “GSM-LIMITED”, “WCDMA-LIMITED”… 
<Operation Mode> 
UE operation mode, values: “Unknown”, “Online”, “Offline”, “Factory Test Mode”, “Reset”, “Low 
Power Mode”. 
<MCC> 
Mobile Country Code (first part of the PLMN code) 
<MNC> 
Mobile Network Code (second part of the PLMN code) 
<LAC> 
Location Area Code (hexadecimal digits) 
<Cell ID> 
Service-cell Identify. 
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<Absolute RF Ch Num>  
AFRCN for service-cell. 
<Track LO Adjust> 
Track LO Adjust 
<C1> 
Coefficient for base station selection 
<C2> 
Coefficient for Cell re-selection 
<Frequency Band> 
Frequency Band of active set 
<PSC> 
Primary synchronization code of active set. 
<Freq> 
Downlink frequency of active set. 
<SSC> 
Secondary synchronization code of active set 
<EC/IO> 
Ec/Io value 
<RSCP> 
Received Signal Code Power 
<Qual> 
Quality value for base station selection 
<RxLev> 
RX level value for base station selection 
<TXPWR> 
UE TX power in dBm. If no TX, the value is 500. 
<Cpid> 
Cell Parameter ID 
<TAC> 
Tracing Area Code 
<PCellID> 
Physical Cell ID 
<earfcn> 
E-UTRA absolute radio frequency channel number for searching LTE cells 
<dlbw> 
Transmission bandwidth configuration of the serving cell on the downlink 
<ulbw> 
Transmission bandwidth configuration of the serving cell on the uplink 
<RSRP> 
Current reference signal received power in -1/10 dBm. Available for LTE 
<RSRQ> 
Current reference signal receive quality as measured by L1. 
<RSSNR> 
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Average reference signal signal-to-noise ratio of the serving cell 
<BID> 
Base ID 
Examples 
AT+CPSI? 
+CPSI: GSM,Online,460-00,0x182d,12401,27 EGSM 900,-64,2110,42-42 
OK 
AT+CPSI? 
+CPSI: WCDMA,Online,460-01,0xA809,11122855,WCDMA IMT 2000,279,10663,0,1.5,62,33, 
52,500 
OK 
AT+CPSI=? 
+CPSI: (0-255) 
OK 
5.15  AT+CNSMOD   Show network system mode 
Description 
This command is used to return the current network system mode. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CNSMOD=? +CNSMOD: (list of supported <n>s) 
OK 
Read Command  Responses 
AT+CNSMOD? +CNSMOD: <n>,<stat> 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+CNSMOD=<n> 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
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<n> 
0  –  disable auto report the network system mode information 
1  –  auto report the network system mode information, command: +CNSMOD:<stat> 
<stat> 
0  –  no service 
1  –  GSM 
2  –  GPRS 
3  –  EGPRS (EDGE) 
4  –  WCDMA 
5  –  HSDPA only(WCDMA) 
6  –  HSUPA only(WCDMA) 
7  –  HSPA (HSDPA and HSUPA, WCDMA) 
8  –  LTE 
9  –  TDS-CDMA 
10  –  TDS-HSDPA only 
11  –  TDS- HSUPA only 
12  –  TDS- HSPA (HSDPA and HSUPA) 
13  –  CDMA 
14    –  EVDO 
15  –  HYBRID (CDMA and EVDO) 
16  –  1X LTE(CDMA and LTE) 
Examples 
AT+CNSMOD? 
+CNSMOD: 0,2 
OK 
5.16  AT+CEREG   EPS network registration status   
Description   
The set command controls the presentation of an unsolicited result code +CEREG: <stat> when 
<n>=1 and there is a change in the MT's EPS network registration status in E-
UTRAN, or 
unsolicited result code +CEREG: <stat>[,<tac>,<ci>[,<AcT>]] when <n>=2 and there is a change 
of the network cell in E-UTRAN; in this latest case <AcT>,  <tac>  and  <ci> 
are sent only if 
available. 
NOTE 1: If the EPS MT in GERAN/UTRAN/E-UTRAN also supports circuit mode services and/or 
GPRS services, the +CREG command and +CREG: result codes and/or the +CGREG command 
and +CGREG: result codes apply to the registration status and location information for those 
services. 
The read command returns the status of result code presentation and an integer <stat> which shows 
whether the network has currently indicated the reg
istration of the MT. Location information 
elements <tac>, <ci> and <AcT>, if available, are returned only when <n>=2 and MT is registered 
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in the network. 
SIM PIN References 
NO 
3GPP TS 24.008 [8]   
Syntax 
Test Command  Responses 
AT+ CEREG=?  +CEREG: (list of supported <n>s) 
OK 
ERROR 
Read Command  Responses 
AT+ CEREG? +CEREG: <n>,<stat>[,<tac>,<ci>[,<AcT>]] 
OK 
ERROR 
Write Command  Responses 
AT+CEREG=[<n>]  OK 
ERROR 
+CME ERROR: <err> 
Execution Command  Responses 
AT+CEREG 
Set default value
(
<n>=0
)
: 
OK 
ERROR 
Defined values 
<n> 
0  –  disable network registration unsolicited result code 
1  –  enable network registration unsolicited result code +CEREG: <stat> 
2  – 
enable network registration and location information unsolicited result code 
+CEREG: <stat>[,<tac>,<ci>[,<AcT>]] 
<stat> 
0 –  not registered, MT is not currently searching an operator to register to 
1 –  registered, home network 
2 –  not registered, but MT is currently trying to attach or searching an operator to register to 
3 –  registration denied 
4 –  unknown (e.g. out of E-UTRAN coverage) 
5 –  registered, roaming 
6 –  registered for "SMS only", home network (not applicable) 
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7 –  registered for "SMS only", roaming (not applicable) 
8 –  attached for emergency bearer services only (See NOTE 2) 
<tac> 
string type; two byte tracking area code in hexadecimal format (e.g. "00C3" equals 195 in decimal) 
<ci> 
string type; four byte E-UTRAN cell identify in hexadecimal format 
<AcT> 
A numberic parameter that indicates the access technology of serving cell 
0  GSM (not applicable) 
1  GSM Compact (not applicable) 
2  UTRAN (not applicable) 
3  GSM w/EGPRS (see NOTE 3) (not applicable) 
4  UTRAN w/HSDPA (see NOTE 4) (not applicable) 
5  UTRAN w/HSUPA (see NOTE 4) (not applicable) 
6  UTRAN w/HSDPA and HSUPA (see NOTE 4) (not applicable) 
7  E-UTRAN 
Examples 
AT+CEREG? 
+ CEREG: 0,4 
OK 
5.17  AT+CTZU    Automatic time and time zone update   
Description   
This command is used to enable and disable automatic time and time zone update via NITZ 
SIM PIN References 
YES 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CTZU=? +CTZU: (list of supported <on/off>s) 
OK 
Read Command 
Responses 
AT+CTZU?  +CTZU: < on/off > 
OK 
Write Command  Responses 
AT+CTZU=< on/off > OK 
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ERROR 
Defined values 
<on/off> 
Integer type value indicating: 
    0  –  Disable automatic time zone update via NITZ (default). 
1  –  Enable automatic time zone update via NITZ. 
NOTE: 1. The value of < on/off > is nonvolatile, and factory value is 0. 
2. For automatic time and time zone update is enabled (+CTZU=1): 
If time zone is only received from network and it isn’
t equal to local time zone 
(AT+CCLK
), time zone is updated automatically, and real time clock is updated based 
on local time and the difference between time zone from network and local time zone 
(Local time zone must be valid). 
If Universal Time and time zone are received from network, both time zone and real 
time clock is updated automatically, and real time clock is based on Universal Time and 
time zone from network. 
Examples 
AT+CTZU? 
+CTZU: 0 
OK 
AT+CTZU=1 
OK 
5.18  AT+CTZR    Time and time zone reporting 
Description   
This command is used to enable and disable the time zone change event reporting. If the reporting 
is enabled the MT returns the unsolicited result code +CTZV: <tz>[,<time>][,<dst>]whenever the 
time zone is changed. 
NOTE: The time zone reporting is not affected by the Automatic Time and Time Zone command 
AT+CTZU. 
SIM PIN References 
YES 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CTZR=? +CTZR: (list of supported < on/off >s) 
OK 
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Read Command 
Responses 
AT+CTZR?  +CTZR: < on/off > 
OK 
Write Command  Responses 
AT+CTZR=< on/off > OK 
ERROR 
Execution Command  Responses 
AT+CTZR Set default value: 
OK 
Defined values 
<on/off> 
Integer type value indicating: 
    0  –  Disable time zone change event reporting (default). 
1  –  Enable time zone change event reporting. 
+CTZV: <tz>[,<time>][,<dst>] 
Unsolicited result code when time zone received from network isn’t equal to local time zone, and if 
the informations from network don’t include date and time, time zone will be only reported, and if 
network daylight saving time is present, it is also reported. For example: 
+CTZV: 32   (Only report time zone)  
+CTZV: 32,1   (Report time zone and network daylight saving time) 
+CTZV: 32,08/12/09,17:00:00    (Report time and time zone) 
+CTZV: 32,08/12/09,17:00:00,1    (Report time, time zone and daylight saving time) 
For more detailed informations about time and time zone, please refer 3GPP TS 24.008. 
<tz>     Local time zone received from network. 
<time>   Universal time received from network, and the format is “yy/MM/dd,hh:mm:ss”, 
where characters indicate year (two last digits), month, day, hour, minutes and 
seconds. 
<dst>    Network daylight saving time, and if it is received from network, it indicates the 
value that has been used to adjust the local time zone. The values as following: 
            0  –  No adjustment for Daylight Saving Time. 
            1  –  +1 hour adjustment for Daylight Saving Time. 
            2  –  +2 hours adjustment for Daylight Saving Time. 
NOTE: Herein, <time> is Universal Time or NITZ time, but not local time. 
Examples 
AT+CTZR? 
+CTZR: 0 
OK 
AT+CTZR=1 
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OK 
5.19  AT+NETMODE  WCDMA & TDSCDMA mode select 
Description   
Syntax 
Test Command 
Responses 
AT+NETMODE=? +NETMODE: (list of supported <netmode>s) 
OK 
Read Command 
Responses 
AT+NETMODE?  +NETMODE: <netmode> 
OK 
Write Command  Responses 
AT+NETMODE=<netmode
> 
OK 
ERROR 
Defined values 
<netmode> 
Integer type value indicating: 
1  –  TDSCDMA mode. 
2  –  WCDMA mode(default). 
Examples 
AT+NETMODE? 
+NETMODE: 2 
OK 
AT+NETMODE=1 
OK 
This command is used to select WCDMA mode or TDSCDMA mode. 
NOTE: The command will take effect aft
er reboot system next time if you modify the current 
mode. The WCDMA and TDSCDMA can not work at the same time. Only for 7500 and 
7600 module. 
SIM PIN References 
NO  Vendor 
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6  AT Commands for Call Control 
6.1  AT+CVHU   Voice hang up control 
Description 
Write command selects whether ATH  or  “drop DTR
” shall cause a voice connection to be 
disconnected or not. By voice connection is also meant alternating mode calls that are currently in 
voice mode. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CVHU=? +CVHU: (list of supported <mode>s) 
OK 
Read Command  Responses 
AT+CVHU? +CVHU: <mode> 
OK 
Write Command  Responses 
AT+CVHU=<mode> OK 
ERROR 
Execution Command  Responses 
AT+CVHU Set default value: 
OK 
Defined values 
<mode> 
0    –    “Drop DTR” ignored but OK response given. AT H  disconnects. 
1    –    “Drop DTR” and ATH ignored but OK response given. 
Examples 
AT+CVHU=0 
OK 
AT+CVHU? 
+CVHU: 0 
OK 
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6.2  AT+CHUP  Hang up call 
Description 
This command is used to cancel voice calls. If there is no call, it will do nothing but OK response is 
given. After running AT+CHUP, multiple “VOICE CALL END: ” may be reported which relies on 
how many calls exist before calling this command. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CHUP=? OK 
Execution Command  Responses 
AT+CHUP VOICE CALL: END: <time> 
[… 
VOICE CALL: END: <time>] 
OK 
No call: 
OK 
Defined values 
<time> 
Voice call connection time. 
Format  –  HHMMSS (HH: hour, MM: minute, SS: second) 
Examples 
AT+CHUP 
VOICE CALL:END: 000017 
OK 
6.3  AT+CBST    Select bearer service type 
Description 
Write command selects the bearer service <name> with data rate <speed>
, and the connection 
element <ce> 
to be used when data calls are originated. Values may also be used during mobile 
terminated data call setup, especially in case of single numbering scheme calls. 
SIM PIN References 
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YES 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CBST=? +CBST: (list of supported <speed>s), (list of supported <name>
s), 
(list of supported <ce>s) 
OK 
Read Command  Responses 
AT+CBST? +CBST: <speed>,<name>,<ce> 
OK 
Write Command  Responses 
AT+CBST= 
<speed>[,<name>[,<ce>]] 
OK 
ERROR 
Execution Command 
Responses 
AT+CBST Set default value: 
OK 
Defined values 
<speed> 
0    –   autobauding(automatic selection of the speed; this setting is possible in case of 3.1 
kHz modem and non-transparent service) 
7    –    9600 bps (V.32) 
12    –    9600 bps (V.34) 
14    –    14400 bps(V.34) 
16    –    28800 bps(V.34) 
17    –    33600 bps(V.34) 
39    –    9600 bps(V.120) 
43    –    14400 bps(V.120) 
48    –    28800 bps(V.120) 
51    –    56000 bps(V.120) 
71    –    9600 bps(V.110) 
75    –    14400 bps(V.110) 
80    –    28800 bps(V.110 or X.31 flag stuffing) 
81    –    38400 bps(V.110 or X.31 flag stuffing) 
83    –    56000 bps(V.110 or X.31 flag stuffing) 
84    –    64000 bps(X.31 flag stuffing) 
116    –    64000 bps(bit transparent) 
134    –    64000 bps(multimedia) 
<name> 
0  –  Asynchronous modem 
1  –  Synchronous modem 
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4  –  data circuit asynchronous (RDI) 
<ce> 
0  –  transparent 
  1  –  non-transparent 
NOTE: 
If <speed> is set to 116 or 134, it is necessary that <name> is equal to 1 and <ce> is equal 
to 0. 
Examples 
AT+CBST=0,0,1 
OK 
AT+CBST? 
+CBST:0,0,1 
OK  
6.4  AT+CRLP    Radio link protocol 
Description 
Radio Link Protocol(RLP) parameters used when non-transparent data calls are originated may be 
altered with write command.   
Read command returns current settings for each supported RLP version <verX>
. Only RLP 
parameters applicable to the corresponding <verX> are returned. 
Test command returns values supported by the TA as a compound value. If ME/TA supports several 
RLP versions <verX>, the RLP parameter value ranges for each <verX> are returned in a separate 
line. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CRLP=? +CRLP: (list  of  supported  <iws>s),  (list of supported <mws>
s), 
(list  of  supported  <T1>s),  (list  of  supported  <N2>s)  [,<ver1>
[,(list of supported   <T4>s)]][<CR><LF> 
+CRLP: (list  of  supported  <iws>s),  (list of supported <mws>
s), 
(list  of  supported  <T1>s),  (list  of  supported  <N2>s)  [,<ver2>
[,(list of supported    <T4>s)]] 
[...]] 
OK 
Read Command  Responses 
AT+ CRLP?  +CRLP: <iws>,  <mws>,  <T1>,  <N2> [,<ver1> [,  <T4>]][
<CR>
<LF>
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+CRLP:<iws>,<mws>,<T1>,<N2>[,<ver2>[,<T4>]] 
[...]] 
OK 
Write Command  Responses 
AT+CRLP=<iws> 
[,<mws>[,<T1>[,<N2> 
[,<ver>[,<T4>]]]]] 
OK 
ERROR 
Execution Command  Responses 
AT+CRLP OK 
Defined values 
<ver>, <verX> 
RLP version number in integer format, and it can 
be 0, 1 or 2; when version indication is not 
present it shall equal 1. 
<iws> 
IWF to MS window size. 
<mws> 
MS to IWF window size. 
<T1> 
Acknowledgement timer. 
<N2> 
Retransmission attempts. 
<T4> 
Re-sequencing period in integer format. 
NOTE: <T1> and <T4> are in units of 10 ms. 
Examples 
AT+CRLP? 
+CRLP:61,61,48,6,0 
+CRLP:61,61,48,6,1 
+CRLP:240,240,52,6,2 
OK 
6.5  AT+CR   Service reporting control 
Description 
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Write command controls whether or not intermediate result code “+CR: <serv>” is returned from 
th
e TA to the TE. If enabled, the intermediate result code is transmitted at the point during connect 
negotiation at which the TA has determined which speed and quality of service will be used, before 
any error control or data compression reports are transmi
tted, and before the intermediate result 
code CONNECT is transmitted. 
SIM PIN References 
YES 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CR=?  +CR: (list of supported <mode>s) 
OK 
Read Command  Responses 
AT+ CR?  +CR: <mode> 
OK 
Write Command 
Responses 
AT+CR=<mode> OK 
Execution Command  Responses 
AT+CR Set default value: 
OK 
Defined values 
<mode> 
0  –  disables reporting 
1  –  enables reporting 
<serv> 
ASYNC      asynchronous transparent 
SYNC      synchronous transparent 
 REL ASYNC    asynchronous non-transparent 
 REL sync      synchronous non-transparent 
 GPRS [<L2P>]  GPRS 
The optional <L2P> proposes a layer 2 protocol to use between the MT and the TE. 
Examples 
AT+CR? 
+CR:0 
OK 
AT+CR=1 
OK 
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6.6  AT+CRC    Cellular result codes 
Description 
Write command controls w
hether or not the extended format of incoming call indication or GPRS 
network request for PDP context activation is used. When enabled, an incoming call is indicated to 
the TE with unsolicited result code “+CRING: <type>” instead of the normal RING. 
Test command returns values supported by the TA as a compound value. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CRC=?  +CRC: (list of supported <mode>s) 
OK 
Read Command  Responses 
AT+ CRC? 
+CRC: <mode> 
OK 
Write Command  Responses 
AT+CRC=<mode> 
OK 
Execution Command 
Responses 
AT+CRC Set default value: 
OK 
Defined values 
<mode> 
0 – disable extended format 
  1 – enable extended format 
<type> 
ASYNC         asynchronous transparent 
 SYNC         synchronous transparent 
 REL ASYNC      asynchronous non-transparent 
 REL SYNC      synchronous non-transparent 
 FAX        facsimile 
 VOICE         normal voice 
VOICE/XXX voice followed by data(XXX is ASYNC, SYNC, REL ASYNC or REL 
SYNC) 
 ALT VOICE/XXX  alternating voice/data, voice first 
 ALT XXX/VOICE    alternating voice/data, data first 
 ALT FAX/VOICE    alternating voice/fax, fax first 
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 GPRS        GPRS network request for PDP context activation 
Examples 
AT+CRC=1 
OK 
AT+CRC? 
+CRC: 1 
OK 
6.7  AT+CLCC    List current calls 
Description 
This command isused to r
eturn list of current calls of ME. If command succeeds but no calls are 
available, no information response is sent to TE. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CLCC=?  +CLCC: (list of supported <n>s) 
OK 
Read Command Responses 
AT+CLCC? +CLCC: <n> 
OK 
Write Command 
Responses 
AT+CLCC=<n> 
OK 
Execution Command  Responses 
AT+CLCC +CLCC:<id1>,<dir>,<stat>,<mode>,<mpty>[,<number>,<type>[,<
alpha>]][<CR><LF> 
+CLCC:<id2>,<dir>,<stat>,<mode>,<mpty>[,<number>,<type>[,<
alpha>]] 
[...]] 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
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<n> 
0  –  Don’t 
report a list of current calls of ME automatically when the current call status 
changes. 
1  –  Report a list of current calls of ME automatically when the current call status changes. 
<idX> 
Integer type, call identification number, this number can be used in +CHLD command operations. 
<dir> 
0  –  mobile originated (MO) call 
1  –  mobile terminated (MT) call 
<stat> 
State of the call: 
0  –  active 
1  –  held 
2  –  dialing (MO call) 
3  –  alerting (MO call) 
4  –  incoming (MT call) 
5  –  waiting (MT call) 
6  –  disconnect 
<mode> 
bearer/teleservice: 
0  –  voice 
1  –  data 
2  –  fax 
9  –  unknown 
<mpty> 
0  –  call is not one of multiparty (conference) call parties 
1  –  call is one of multiparty (conference) call parties 
<number> 
String type phone number in format specified by <type>. 
<type> 
Type of address octet in integer format; 
128  –  Restricted number type includes unknown type and format 
145  –  International number type 
161  –  national number.The network support for this type is optional 
177  –  network specific number,ISDN format 
    129  –  Otherwise 
<alpha> 
String type alphanumeric representation of <number> corresponding to the entry found in 
phonebook; used character s
et should be the one selected with command Select TE Character Set 
AT+CSCS. 
Examples 
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ATD10011; 
OK 
AT+CLCC 
+CLCC: 1,0,0,0,0,"10011",129,"sm" 
OK 
RING (with incoming call) 
AT+CLCC 
+CLCC: 1,1,4,0,0,"02152063113",128,"gongsi" 
OK 
6.8  AT+CEER    Extended error report 
Description 
Execution command causes the TA to return the information text <report>, which should offer the 
user of the TA an extended report of the reason for: 
1 The failure in the last unsuccessful call setup(originating or answering) or in-call 
modification. 
2 The last call release. 
3 The last unsuccessful GPRS attach or unsuccessful PDP context activation. 
4 The last GPRS detach or PDP context deactivation. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CEER=? OK 
Execution Command  Responses 
AT+CEER +CEER:<report> 
OK 
Defined values 
<report> 
Wrong information which is possibly occurred. 
Examples 
AT+CEER 
+CEER: Invalid/incomplete number 
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OK 
6.9  AT+CCWA   Call waiting 
Description   
This command allows control of the Call Waiting supplementary service. Activation, deactivation 
and status query are supported. When querying the status of a network service (<mode>=2) the 
response line for 'not active' case (<status>
=0) should be returned only if service is not active for 
any <class>. Parameter <n> 
is used to disable/enable the presentation of an unsolicited result code 
+CCWA:  <number>,<type>,<class> 
to the TE when call waiting service is enabled. Command 
should be abortable when network is interrogated. 
SIM PIN References 
YES 3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CCWA=? +CCWA: (list of supported <n>s) 
OK 
Read Command  Responses 
AT+CCWA? +CCWA: <n> 
OK 
Write Command  Responses 
AT+CCWA= 
<n>[,<mode>[,<class>]] 
When <mode>=2 and command successful: 
+CCWA:<status>,<class>[<CR><LF> 
+CCWA: <status>, <class>[...]] 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command 
Responses 
AT+CCWA Set default value (<n>=0): 
OK 
Defined values 
<n> 
Sets/shows the result code presentation status in the TA 
0  –  disable 
1  –  enable 
<mode> 
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When <mode> parameter is not given, network is not interrogated: 
0  –  disable 
1  –  enable 
2  –  query status 
<class> 
It is a sum of integers each representing a class of information (default 7) 
1    –  voice (telephony) 
2    –  data (refers to all bearer services) 
4    –  fax (facsimile services) 
7    –  voice,data and fax(1+2+4) 
8    –  short message service 
16   –  data circuit sync 
32   –  data circuit async 
64   –  dedicated packet access 
128  –  dedicated PAD access 
255  –  The value 255 covers all classes   
<status> 
0  –  not active 
1  –  active 
<number> 
String type phone number of calling address in format specified by <type>. 
<type> 
Type of address octet in integer format; 
128  –  Restricted number type includes unknown type and format 
145  –  International number type 
    129  –  Otherwise 
Examples 
AT+CCWA=? 
+CCWA:(0-1) 
OK 
AT+CCWA? 
+CCWA: 0 
OK 
6.10   AT+CHLD    Call related supplementary services 
Description 
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This command allows the control the following call related services: 
1. A call can be tempora
rily disconnected from the ME but the connection is retained by the 
network. 
2. Multiparty conversation (conference calls). 
3. The served subscriber who has two calls (one held and the other either active or alerting) 
can connect the other parties and release the served subscriber's own connection. 
Calls can be put on hold, recovered, released, added to conversation, and transferred. This is 
based on the GSM/UMTS supplementary services. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CHLD=? +CHLD: (list of supported <n>s) 
OK 
Write Command  Responses 
AT+CHLD=<n> OK 
ERROR 
+CME ERROR: <err> 
Execution Command 
Responses 
AT+CHLD 
Default to <n>=2. 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<n> 
0  
–  Terminate all held calls; or set User Determined User Busy for a waiting call 
1   –  Terminate all active calls and accept the other call (waiting call or held call) 
1X  –  Terminate a specific call X 
2   –   Place all active calls on hold and accept the other call (waiting call or held call) as 
the active call 
2X  –   Place all active calls except call X on hold 
3   –  Add the held call to the active calls 
4  
–  Connect two calls and cut off the connection between users and them simultaneously 
Examples 
AT+CHLD=? 
+CHLD: (0,1,1x,2,2x,3,4) 
OK 
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6.11  AT+CCFC   Call forwarding number and conditions 
Description 
This command allows control of the call forwarding supplementary service. Registration, erasure, 
activation, deactivation, and status query are supported. 
SIM PIN References 
YES 3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CCFC=? +CCFC: (list of supported <reason>s) 
OK 
Write Command  Responses 
AT+CCFC=<reason>,<mode
>[,<number>[,<type>[,<clas
s>[,<subaddr>[,<satype>[,<ti
me> ]]]]]] 
When <mode>=2 and command successful: 
+CCFC: <status>,<class1>[,<number>,<type> 
[,<subaddr>,<satype>[,<time>]]][<CR><LF> 
+CCFC: <status>,<class2>[,<number>,<type> 
[,<subaddr>,<satype>[,<time>]]][...]] 
OK 
ERROR 
+CME ERROR:<err> 
Defined values 
<reason> 
0  –  unconditional 
1  –  mobile busy 
2  –  no reply 
3  –  not reachable 
4  –  all call forwarding 
5  –  all conditional call forwarding 
<mode> 
0  –  disable 
1  –  enable 
2  –  query status 
3  –  registration 
4  –  erasure 
<number> 
String type phone number of forwarding address in format specified by <type>. 
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<type> 
Type of address octet in integer format: 
145  –  dialing string <number> includes international access code character ‘+’ 
129  –  otherwise 
<subaddr> 
String type sub address of format specified by <satype>. 
<satype> 
Type of sub address octet in integer format, default 128. 
<classX> 
It is a sum of integers each representing a class of information (default 7): 
1    –  voice (telephony) 
2    –  data (refers to all bearer services) 
4    –  fax (facsimile services) 
16   –  data circuit sync 
32    –  data circuit async 
64   –  dedicated packet access 
128  –  dedicated PAD access 
255  –  The value 255 covers all classes 
<time> 
1...30  –  
when "no reply" is enabled or queried, this gives the time in seconds to wait before call 
is forwarded, default value 20. 
<status> 
0  –  not active 
1  –  active 
Examples 
AT+CCFC=? 
+CCFC: (0,1,2,3,4,5) 
OK 
AT+CCFC=0,2 
+CCFC: 0,255 
OK 
6.12   AT+CLIP    Calling line identification presentation 
Description 
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This command refers to the GSM/UMTS supplementary service CLIP (Calling Line Identification 
Presentation) that enables a called subscriber to get the calling line identity (CLI) of the calling 
party when receiving a mobile terminated call. 
Write command enables or disables the presentation of the CLI at the TE. It has no effect on the 
execution of the supplementary service CLIP in the network. 
When the presentation of the CLI at the TE is enabled (and calling subscriber allows), +CLIP: 
<number>,<type>,,[,[<alpha>][,<CLI validity>]] response is returned after every R
ING (or 
+CRING: <type>; refer sub clause "Cellular result codes +CRC") result code sent from TA to TE. It 
is manufacturer specific if this response is used when normal voice call is answered. 
SIM PIN References 
YES 
3GPP TS 27.007 
Syntax 
Test Command Responses 
AT+CLIP=? +CLIP: (list of supported <n>s) 
OK 
Read Command  Responses 
AT+CLIP? +CLIP: <n>,<m> 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+CLIP=<n> OK 
ERROR 
+CME ERROR: <err> 
Execution Command  Responses 
AT+CLIP 
Set default value(<n>=0): 
OK 
Defined values 
<n> 
Parameter sets/shows the result code presentation status in the TA: 
0  –  disable 
1  –  enable 
<m> 
0  –  CLIP not provisioned 
1  –  CLIP provisioned 
2  –  unknown (e.g. no network, etc.) 
<number> 
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String type phone number of calling address in format specified by <type>. 
<type> 
Type of address octet in integer format; 
128  –  Restricted number type includes unknown type and format 
145  –  International number type 
161  –  national number.The network support for this type is optional 
177  –  network specific number,ISDN format 
    129  –  Otherwise 
<alpha> 
String type alphanumeric representation of <number> corresponding to the entry found in phone 
book. 
<CLI validity> 
0  –  CLI valid 
1  –  CLI has been withheld by the originator 
2  –  
CLI is not available due to interworking problems or limitations of originating           
network 
Examples 
AT+CLIP=1 
OK 
RING (with incoming call) 
+CLIP: "02152063113",128,,,"gongsi",0 
6.13  AT+CLIR   Calling line identification restriction 
Description 
This command refers to CLIR-
service that allows a calling subscriber to enable or disable the 
presentation of the CLI to the called party when originating a call. 
Write command overrides the CLIR subscription (default is restricted or allowed) when temporary 
mode is provisioned as a default adjustment for all following outgoing calls. This adjustment can be 
revoked by using the opposite command.. If this command is used by a subscriber without 
provision of CLIR in permanent mode the network will act. 
Read command gives the default adjustment for all outgoing calls (given in <n>), and also triggers 
an interrogation of the provision status of the CLIR service (given in <m>). 
Test command returns values supported as a compound value. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
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AT+CLIR=? 
+CLIR: (list of supported <n>s) 
OK 
Read Command  Responses 
AT+CLIR? +CLIR: <n>,<m> 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+CLIR=<n> 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<n> 
0  –  presentation indicator is used according to the subscription of the CLIR service 
1  –  CLIR invocation 
2  –  CLIR suppression 
<m> 
0  –  CLIR not provisioned 
1  –  CLIR provisioned in permanent mode 
2  –  unknown (e.g. no network, etc.) 
3  –  CLIR temporary mode presentation restricted 
4  –  CLIR temporary mode presentation allowed 
Examples 
AT+CLIR=? 
+CLIR:(0-2) 
OK 
6.14   AT+COLP    Connected line identification presentation 
Description 
This command refers to the GSM/UMTS supplementary s
ervice COLP(Connected Line 
Identification Presentation) that enables a calling subscriber to get the connected line identity 
(COL) of the called party after setting up a mobile originated call. The command enables or 
disables the presentation of the COL at 
the TE. It has no effect on the execution of the 
supplementary service COLR in the network. 
When enabled (and called subscriber allows), +COLP:<number>,  <type> [,<subaddr>,  <satype> 
[,<alpha>]] intermediate result code is returned from TA to TE before any +CR responses. It is 
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manufacturer specific if this response is used when normal voice call is established. 
When the AT+COLP=1 is set, any data input immediately after the launching of “ATDXXX;” will 
stop the execution of the ATD command, which may cancel the establishing of the call. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+COLP=? +COLP: (list of supported <n>s) 
OK 
Read Command  Responses 
AT+ CO LP?  +COLP: <n>,<m> 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+COLP =<n> OK 
ERROR 
+CME ERROR: <err> 
Execution Command 
Responses 
AT+COLP Set default value(<n>=0, <m>=0): 
OK 
Defined values 
<n> 
Parameter sets/shows the result code presentation status in the TA: 
0  –  disable 
1  –  enable 
<m> 
0  –  COLP not provisioned 
1  –  COLP provisioned 
2  –  unknown (e.g. no network, etc.) 
Examples 
AT+COLP? 
+COLP: 1,0 
OK 
ATD10086; 
VOICE CALL: BEGIN 
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+COLP: "10086",129,,, 
OK 
6.15  AT+VTS    DTMF and tone generation 
Description 
This command allows the transmission of DTMF tones and arbitrary tones which cause the Mobile 
Switching Center 
(MSC) to transmit tones to a remote subscriber. The command can only be used 
in voice mode of operation (active voice call). 
NOTE: The END event of voice call will terminate the transmission of tones, and as an operator 
option, the tone may be ceased after a pre-
determined time whether or not tone duration has been 
reached. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+VTS=?  +VTS: (list of supported<dtmf>s) 
OK 
Write Command 
Responses 
AT+VTS=<dtmf> 
[,<duration>] 
AT+VTS=<dtmf-string> 
OK 
ERROR 
Defined values 
<dtmf> 
A single ASCII character in the set 0-9, *, #, A, B, C, D. 
<duration> 
Tone duration in 1/10 seconds, from 0 to 255. This is interpreted as a DTMF tone of different 
duration from that mandated by the AT+VTD 
command, otherwise, the duration which be set the 
AT+VTD command will be used for the tone (<duration> is omitted). 
<dtmf-string> 
A sequence of ASCII character in the set 0-9, *, #, A, B, C, D, and maximal length of the string is 
29. The string must be enclosed in double quotes (“”), and separated by commas between the ASCII 
characters (e.g. “1,3,5,7,9,*”). Each of the tones with a duration which is set by the AT+VTD 
command. 
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Examples 
AT+VTS=1 
OK 
AT+VTS=1,20 
OK 
AT+VTS=”1,3,5” 
OK 
AT+VTS=? 
+VTS: (0-9,*,#,A,B,C,D) 
OK 
6.16  AT+VTD    Tone duration 
Description 
This refers to an integer <n> that defines the length of tones emitted as a result of the AT+VTS 
command. A value different than zero causes a tone of duration <n>/10 seconds. 
SIM PIN References 
YES 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+VTD=?  +VTD: (list of supported <n>s) 
OK 
Read Command 
Responses 
AT+VTD?  +VTD: <n> 
OK 
Write Command 
Responses 
AT+VTD=<n> 
OK 
Defined values 
<n> 
Tone duration in integer format, from 0 to 255, and 0 is factory value. 
0       Tone duration of every single tone is dependent on the network. 
1…255  Tone duration of every single tone in 1/10 seconds. 
Examples 
AT+VTD=? 
+VTD: (0-255) 
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OK 
AT+VTD? 
+VTD: 0 
OK 
AT+VTD=5 
OK 
6.17  AT+CSTA   Select type of address 
Description 
Write command is used to select the type of number for further dialing commands (ATD) according 
to GSM/UMTS specifications. 
Read command returns the current type of number. 
Test command returns values supported by the Module as a compound value. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CSTA=?  +CSTA:(list of supported <type>s) 
OK 
Read Command 
Responses 
AT+CSTA? +CSTA:<type> 
OK 
Write Command  Responses 
AT+CSTA=<type> OK   
ERROR 
Execution Command  Responses 
AT+CSTA OK 
Defined values 
<type> 
Type of address octet in integer format: 
145    –    when dialling string includes international access code character “+” 
161  –  national number.The network support for this type is optional 
177  –  network specific number,ISDN format 
129    –    otherwise 
NOTE: 
Because the type of address is automatically detected on the dial string of dialing 
command, command AT + CSTA has really no effect. 
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Examples 
AT+CSTA? 
+CSTA: 129 
OK 
AT+CSTA=145 
OK 
6.18  AT+CMOD   Call mode 
Description 
Write command selects the call mode of further dialing commands (ATD) or for next answering 
command (ATA). Mode can be either single or alternating. 
Test command returns values supported by the TA as a compound value. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CMOD=? 
+CMOD: (list of supported <mode>s) 
OK 
Read Command  Responses 
AT+CMOD? +CMOD: <mode> 
OK 
Write Command 
Responses 
AT+CMOD=<mode> OK 
ERROR 
Execution Command  Responses 
AT+CMOD 
Set default value: 
OK 
Defined values 
<mode> 
0   –    single mode(only supported) 
NOTE:
 The value of <mode> shall be set to zero after a successfully completed alternating mode 
call. It shall be set to zero also after a failed answering. The power-on, factory and user resets shall 
also set the value to zero. This reduces the possibility that alternating mode calls are originated or 
answered accidentally. 
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Examples 
AT+CMOD? 
+CMOD: 0 
OK 
AT+CMOD=0 
OK 
6.19  AT+VMUTE    Speaker mute control 
Description 
This command is used to control the loudspeaker to mute and unmute during a voice call or a video 
call which is connected. If there is not a connected call, write command can’t be used. 
When all calls are disconnected, the Module sets the subparameter as 0 automatically. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+VMUTE=?  +VMUTE: (list of supported <mode>s) 
OK 
Read Command  Responses 
AT+VMUTE?  +VMUTE: <mode> 
OK 
Write Command 
Responses 
AT+VMUTE=<mode> OK 
ERROR 
Defined values 
<mode> 
0  –  mute off 
1  –  mute on 
Examples 
AT+VMUTE=1 
OK 
AT+VMUTE? 
+VMUTE:1 
OK 
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6.20  AT+CMUT    Microphone mute control 
Description 
This command is used to enable an
d disable the uplink voice muting during a voice call or a video 
call which is connected. If there is not a connected call, write command can’t be used. 
When all calls are disconnected, the Module sets the subparameter as 0 automatically. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CMUT=? 
+CMUT: (list of supported <mode>s) 
OK 
Read Command 
Responses 
AT+ CMUT?  +CMUT: <mode> 
OK 
Write Command  Responses 
AT+CMUT=<mode> OK 
ERROR 
Defined values 
<mode> 
0  –  mute off 
1  –  mute on 
Examples 
AT+CMUT=1 
OK 
AT+CMUT? 
+CMUT: 1 
OK 
6.21  AT+MORING    Enable or disable report MO ring URC 
Description   
This command is used to enable or disable report MO ring URC 
SIM PIN References 
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NO 
Vendor 
Syntax 
Test Command  Responses 
AT+MORING=?  +MORING: (0-1) 
OK 
Read Command  Responses 
AT+ MORING?  + MORING: <mode> 
OK 
Write Command 
Responses 
AT+MORING=<mode> OK 
ERROR 
Defined values 
<mode> 
Enable or disable report MO ring URC: 
    0   –   disable 
1   –   enable.   
Examples 
AT+MORING=1 
OK 
AT+MORING? 
+MORING:1 
OK 
AT+MORING=? 
+MORING: (0-1) 
OK 
6.22  AT+CSDVC  Switch voice channel device 
Description   
This command is used to switch voice channel device. After changing current voice channel device 
and if there is a connecting voice call, it will use the setti
ngs of previous device (loudspeaker 
volume level, mute state of loudspeaker and microphone, refer to AT+CLV L,  AT+VMUTE, and 
AT+ CM U T ). 
SIM PIN References 
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NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CSDVC=? +CSDVC: (list of supported <dev>s) 
OK 
Read Command  Responses 
AT+CSDVC? +CSDVC: <dev> 
OK 
Write Command  Responses 
AT+CSDVC=<dev> OK 
Defined values 
<dev> 
1  –  handset 
 3  –  speaker phone 
Examples 
AT+CSDVC=1 
OK 
AT+CSDVC? 
+CSDVC:1 
OK 
6.23  AT+CLVL  Loudspeaker volume level 
Description   
Write command is used to select the volume of the internal loudspeaker audio output of the device. 
Test command returns supported values as compound value. 
SIM PIN References 
NO 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CLVL=?  +CLVL: (list of supported <level>s) 
OK 
Read Command  Responses 
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AT+CLVL?  +CLVL: <level> 
OK 
Write Command  Responses 
AT+CLVL=<level> 
OK 
ERROR 
Defined values 
<level> 
Integer type value which represents loudspeaker volume level. The range is from 0 to 5, and 0 
represents the lowest loudspeaker volume level, 4 is default factory value. 
NOTE: <level> is nonvolatile, and it is stored when restart. 
Examples 
AT+CLVL? 
+CLVL:4 
OK 
AT+CLVL=3 
OK 
6.24  AT+SIDET  Set sidetone 
Description 
This 
command is used to enable or disable sidetone. Please r
efer to related hardware design 
document for more information. This command is only used after call start. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+SIDET=? 
+SIDET: (list of supported <en>s) 
OK 
Read Command  Responses 
AT+SIDET? +SIDET: <en> 
OK 
Write Command 
Responses 
AT+SIDET=<en> OK 
ERROR 
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Defined values 
<en> 
0: disable sidetone 
1: enable sidetone 
Examples 
AT+SIDET? 
+SIDET: 0 
OK 
AT+SIDET=? 
+SIDET: (0-1) 
OK 
AT+SIDET=1 
OK 
6.25  AT+CACDBFN    Change default ACDB filename 
Description 
This command is used to change default acdb filename. But there are six adcd files used by system, 
we can’t change default acdb filename to them. These filenames  including  Bluetooth_cal.acdb, 
General_cal.acdb, Global_cal.acdb, Hdmi_cal.acdb, Headset_cal.acdb, Speaker_cal.acdb 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CACDBFN=?
+CACDBFN: (acdb file(s) listed in /data <acdb file>s,except  s
ix acdb file used by system) 
OK
Read Command  Responses 
AT+CACDBFN?
+
CACDBFN: <acdb file> 
OK
Write Command 
Responses 
AT+CACDBFN=<acdb file> OK
ERROR
Defined values 
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<acdb file> 
<acdb file> file(s) in the directory /data with suffix: acdb, except six acdb file used by system 
Examples 
AT+CACDBFN=Handset_cal.acdb 
OK 
AT+
CACDBFN
? 
+CACDBFN: Handset_cal.acdb 
OK 
AT+CACDBFN=? 
+CACDBFN: (Handset_cal.acdb,Handset_tianmai.acdb) 
OK 
6.26  AT+CPCMREG  USB audio control 
Description 
This command is used to start/stop usb audio function. This command need used after call start. 
SIM PIN References 
NO Vendor 
Syntax 
Test Command  Responses 
AT+CPCMREG=? +CPCMREG: (list of supported < mode >s) 
OK 
Read Command 
Responses 
AT+ CPCMREG?  +CPCMREG: <mode> 
OK 
Write Command  Responses 
AT+CPCMREG =<mode> 
OK 
ERROR 
Defined values 
<mode> 
0  –  stop usb audio function,need used after call stop. 
1  –  start usb audio function,need used after call start(ATDxxx;) 
Examples 
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AT+CPCMREG=1 
OK 
AT+CPCMREG? 
+CPCMREG:1 
OK 
6.27  AT+CMICGAIN  Adjust mic gain 
Description 
This  command  is used to adjust mic gain. If this command was used during call, it will take 
immediate effect. Otherwise, it will take effect in next call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CMICGAIN=? +CMICGAIN: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CMICGAIN? 
+CMICGAIN: <value> 
OK 
Write Command  Responses 
AT+CMICGAIN=<value> OK 
ERROR 
Defined values 
<value> 
Gain value from 0-8, 8 is the max. 3 is the default value. This value will be reset to default value 
after Module reset. 
Examples 
AT+CMICGAIN=1 
OK 
AT+CMICGAIN? 
+CMICGAIN:1 
OK 
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6.28   AT+COUTGAIN  Adjust out gain 
Description 
This command is used to adjust out(speaker/handset) gain. If this command was used during call, it 
will take immediate effect . Otherwise, it will take effect in next call. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+COUTGAIN=?  +COUTGAIN: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ COUTGAIN?  +COUTGAIN: <value> 
OK 
Write Command 
Responses 
AT+COUTGAIN=<value> OK 
ERROR 
Defined values 
<mode> 
Gain value from 0-8, 8 is the max. 8 is the default value. This value will be reset to default value 
after Module reset. 
Examples 
AT+COUTGAIN=1 
OK 
AT+COUTGAIN? 
+ COUTGAIN:1 
OK 
6.29   AT+CTXVOL  Adjust TX voice mic volume 
Description 
This command is used to adjust mic gain. It modify the TX_VOICE_VOL in DSP. This command 
only be used during call and don’t save the parameter after call. 
SIM PIN References 
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NO  Vendor 
Syntax 
Test Command  Responses 
AT+CTXVOL=? +CTXVOL: (list of supported <value>s) 
OK 
Read Command 
Responses 
AT+ CTXVOL?  +CTXVOL: <value> 
OK 
Write Command 
Responses 
AT+CTXVOL=<value> OK 
ERROR 
Defined values 
<value> 
Gain value from 0x0000-0xffff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CTXVOL=0x1234 
OK 
AT+CTXVOL? 
+CTXVOL: 0x2d33 
OK 
6.30  AT+CTXMICGAIN  Adjust TX voice mic gain 
Description 
This  command  is used to adjust mic gain. It modify the TX_VOICE_MIC_GAIN in DSP.  This 
command only be used during call and don’t save the parameter after call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CTXMICGAIN=?  +CTXMICGAIN: (list of supported <mode>,<value>s) 
OK 
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Read Command 
Responses 
AT+ CTXMICGAIN?  +CTXMICGAIN: <mode>,<value> 
OK 
Write Command 
Responses 
AT+CTXMICGAIN=<mode
>,<value> 
OK 
ERROR 
Defined values 
<mode> 
mode value from 0-1, default value is not a fixed value. It varies with different versions. 
<value> 
gain value from 0x0000-0xffff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CTXMICGAIN=1,0x1234 
OK 
AT+CTXMICGAIN? 
+ CTXMICGAIN: 1,0x2000 
OK 
6.31  AT+CRXVOL    Adjust RX voice output speaker volume 
Description 
This  command  is used to adjust digital Volume of output signal after speech decoder, before 
summation of sidetone and DAC. It modify the RX_VOICE_SPK_GAIN in DSP. This command 
only be used during call and don’t save the parameter after call. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+ CRXVOL=? +CRXVOL: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CRXVOL?  +CRXVOL: <value> 
OK 
Write Command  Responses 
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AT+ CRXVOL=<value> 
OK 
ERROR 
Defined values 
<value> 
Gain value from 0x0000-0xffff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CRXVOL=0x1234 
OK 
AT+CRXVOL? 
+CRXVOL: 0x3fd9 
OK 
6.32  AT+CECH    Inhibit far-end echo 
Description 
This  command  is used to adjust  additional muting gain applied in DES during far-end only.  It 
modify the DENS_gamma_e_high  of  TX_VOICE_SMECNS in DSP. 
The bigger the value, the 
stronger the inhibition .This command only be used during call and don’t save the parameter after 
call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+ CECH=? +CECH: (list of supported <value>s) 
OK 
Read Command 
Responses 
AT+ CECH?  +CECH: <value> 
OK 
Write Command Responses 
AT+ CECH=<value> 
OK 
ERROR 
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Defined values 
<value> 
Gain value from 0x0000-0x7fff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CECH=0x1234 
OK 
AT+CECH? 
+CECH: 0x0200 
OK 
6.33  AT+CECDT    Inhibit echo during doubletalk 
Description 
This command is used to adjust additional muting gain applied in DES during doubletalk. It modify 
the DENS_gamma_e_dt of TX_VOICE_SMECNS in DS P. 
The bigger the value, the stronger the 
inhibition .This command only be used during call and don’t save the parameter after call. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+ CECDT=? +CECDT: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CECDT?  +CECDT: <value> 
OK 
Write Command 
Responses 
AT+ CECDT=<value> OK 
ERROR 
Defined values 
<value> 
Gain value from 0x0000-0x7fff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CECDT=0x1234 
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OK 
AT+CECDT? 
+CECDT: 0x0100 
OK 
6.34  AT+CECWB  Inhibit echo in the high band 
Description 
This command is used to adjust 
the aggressiveness of EC in the high band (4 ~ 8 kHz). A higher 
value is more aggressive and suppresses more high-band echo. Q-format - Q4.11WB_gamma_E = 
2048 * gammaWhere gamma is in the range [0,15].  It modify the WB_gamma_e of 
TX_VOICE_SMECNS in DSP. The bigger the value, the stronger the inhibition .T
his command 
only be used during call and don’t save the parameter after call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+ CECWB=? 
+CECWB: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CECWB?  +CECWB: <value> 
OK 
Write Command 
Responses 
AT+ CECWB=<value> OK 
ERROR 
Defined values 
<value> 
Gain value from 0x0000-0x7fff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CECWB=0x1234 
OK 
AT+CECWB? 
+CECWB: 0x0300 
OK 
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6.35  AT+CNSN  MIC NOISE suppression   
Description 
This command is used to adjust oversubtraction factor and bias compensation for noise estimation. 
It modify the DENS_gamma_n  of  TX_VOICE_SMECNS in DSP. The bigger th
e value, the 
stronger the noise  suppression  .This command only be used during call and don’
t save the 
parameter after call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+ CNSN=? +CNSN: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CNSN?  +CNSN: <value> 
OK 
Write Command  Responses 
AT+ CNSN=<value> OK 
ERROR 
Defined values 
<value> 
Gain value from 0x0000-0x7fff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CNSN=0x1234 
OK 
AT+CNSN? 
+CNSN: 0x0258 
OK 
6.36  AT+CNSLIM  MIC NOISE suppression   
Description 
This  command  is used to  controls the maximum amount of noise suppression.  I
t modify the 
DENS_limit_NS of  TX_VOICE_SMECNS in DSP. The bigger the value, the stronger the noise 
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suppression .This command only be used during call and don’t save the parameter after call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+ CNSLIM=? 
+CNSLIM: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CNSLIM?  +CNSLIM: <value> 
OK 
Write Command  Responses 
AT+ CNSLIM=<value> OK 
ERROR 
Defined values 
<value> 
Gain value from 0x0000-0x7fff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CNSLIM=0x1234 
OK 
AT+CNSLIM? 
+CNSLIM: 0x16c4 
OK 
6.37  AT+CFNSMOD  Adjust parameter fnsMode of RX_VOICE_FNS 
Description 
This command is used to modify the fnsMode of RX_VOICE_FNS in DSP. This command only be 
used during call and don’t save the parameter after call. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+ CFNSMOD=? +CFNSMOD: (list of supported <value>s) 
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OK 
Read Command  Responses 
AT+ CFNSMOD?  +CFNSMOD: <value> 
OK 
Write Command  Responses 
AT+ CFNSMOD=<value> 
OK 
ERROR 
Defined values 
<value> 
Gain value is bellow, default value is not a fixed value. It varies with different versions. 
0x00FF – Maximum NS 
0x0073 – Basic stationary NS 
0x00F3 – Enhanced stationary NS 
0x01FF – Aggressive NS 
Examples 
AT+CFNSMOD=0x0073 
OK 
AT+CFNSMOD? 
+CFNSMOD: 0x0073 
OK 
6.38  AT+CFNSIN  Adjust parameter fnsInputGain of RX_VOICE_FNS   
Description 
This  command  is used to modify the fnsInputGain  of  RX_VOICE_FNS in DSP. T
his command 
only be used during call and don’t save the parameter after call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+ CFNSIN=? 
+CFNSIN: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CFNSIN?  +CFNSIN: <value> 
OK 
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Write Command 
Responses 
AT+ CFNSIN=<value> OK 
ERROR 
Defined values 
<value> 
Gain value from 0x2000-0x7fff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CFNSIN=0x2234 
OK 
AT+CFNSIN? 
+CFNSIN: 0x2000 
OK 
6.39  AT+CFNSLVL  Adjust parameter fnsTargetNS of RX_VOICE_FNS   
Description 
This command is used to modify the fnsTargetNS of RX_VOICE_FNS in DSP. This command only 
be used during call and don’t save the parameter after call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+ CFNSLV L=? +CFNSLVL: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CFNSLV L?  +CFNSLV L: <value> 
OK 
Write Command  Responses 
AT+ CFNSLV L=<value> OK 
ERROR 
Defined values 
<value> 
Gain value from 0x0000-0x7fff, default value is not a fixed value. It varies with different versions. 
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Examples 
AT+CFNSLVL=0x2234 
OK 
AT+CFNSLVL? 
+CFNSLVL: 0x1000 
OK 
6.40  AT+CECRX  Enable or disable VOICE_MOD_ENABLE 
Description 
This  command  is used to enable or disable VOICE_MOD_ENABLE.  It modify the 
VOICE_MOD_ENABLE in DSP. This command only be used during call and don’
t save the 
parameter after call. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+ CECRX=?  +CECRX: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CECRX?  +CECRX: <value> 
OK 
Write Command 
Responses 
AT+ CECRX=<value> OK 
ERROR 
Defined values 
<value> 
This default value is not a fixed value. It varies with different versions. 
1: Enable   
0: Disable 
Examples 
AT+CECRX=1 
OK 
AT+CECRX? 
+CECRX: 1 
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OK 
6.41  AT+CNLPPG  Modify the NLPP_gain in DSP 
Description 
This  command  is used to modify the NLPP_gain  of  VOICE_ECRX_PARAM in DSP. This 
command only be used during call and don’t save the parameter after call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+ CNLPPG=?  +CNLPPG: (list of supported <value>s) 
OK 
Read Command 
Responses 
AT+ CNLPPG?  +CNLPPG: <value> 
OK 
Write Command  Responses 
AT+ CNLPPG =<value> 
OK 
ERROR 
Defined values 
<value> 
Gain value from 0x0000-0x7fff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CNLPPG=0x1234 
OK 
AT+CNLPPG? 
+CNLPPG: 0x1000 
OK 
6.42  AT+CNLPPL  Modify the NLPP_limit in DSP   
Description 
This  command  is used to modify the NLPP_limit of  VOICE_ECRX_PARAM in DSP. This 
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command only be used during call and don’t save the parameter after call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+ CNLPPL=?  +CNLPPL: (list of supported <value>s) 
OK 
Read Command  Responses 
AT+ CNLPPL?  +CNLPPL: <value> 
OK 
Write Command 
Responses 
AT+ CNLPPL =<value> OK 
ERROR 
Defined values 
<value> 
Value from 0x0000-0x7fff, default value is not a fixed value. It varies with different versions. 
Examples 
AT+CNLPPL=0x1234 
OK 
AT+CNLPPL? 
+CNLPPL: 0x7fff 
OK 
6.43  AT+CECM  Adjust echo canceller 
Description 
This AT command is used to select the echo cancellation mode. This command only be used during 
call and don’t save the parameter after call. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+ CECM=?  +CECM: (list of supported <value>s) 
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OK 
Read Command  Responses 
AT+ CECM?  +CECM: <value> 
OK 
Write Command  Responses 
AT+ CECM=<value> 
OK 
ERROR 
Defined values 
<value> 
This default value is not a fixed value. It varies with different versions. 
0: disable EC mode 
1: EC mode recommended for Handset 
2: EC mode recommended for Headset 
3: EC mode recommended for HANDSFREE 
4: EC mode recommended for Bluetooth (least aggressive) 
5: EC mode recommended for Bluetooth (less aggressive) 
6: EC mode recommended for Bluetooth 
7: EC mode recommended for Speaker least aggressive 
8: EC mode recommended for Speaker phone medium 
9: EC mode recommended for Speaker phone aggressive 
Examples 
AT+CECM=1 
OK 
AT+CECM? 
+CECM: 1 
OK 
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7   AT Commands for SMS 
7.1  AT+CSMS    Select message service 
Description 
This command is used to select messaging service <service>. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CSMS=? +CSMS: (list of supported <service>s) 
OK 
Read Command  Responses 
AT+ CS M S?  +CSMS: <service>,<mt>,<mo>,<bm> 
OK 
Write Command  Responses 
AT+CSMS=<service> +CSMS: <mt>,<mo>,<bm> 
OK 
ERROR 
+CMS ERROR: <err> 
Defined values 
<service> 
0    –  SMS at command is compatible with GSM phase 2. 
1  –  SMS at command is compatible with GSM phase 2+. 
<mt> 
Mobile terminated messages: 
0  –  type not supported. 
1  –  type supported. 
<mo> 
Mobile originated messages: 
0  –  type not supported. 
1  –  type supported. 
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<bm> 
Broadcast type messages: 
0  –  type not supported. 
1  –  type supported. 
Examples 
AT+CSMS=0 
+CSMS:1,1,1 
OK 
AT+CSMS? 
+CSMS:0,1,1,1 
OK 
AT+CSMS=? 
+CSMS:(0-1) 
OK 
7.2  AT+CPMS   Preferred message storage 
Description   
This command is used to select memory storages <mem1>, <mem2> and <mem3> to be used for 
reading, writing, etc. 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CPMS=? 
+CPMS: (list of supported <mem1>s), (list of supported 
<mem2>s), (list of supported <mem3>s) 
OK 
Read Command 
Responses 
AT+ CP M S?  +CPMS:<mem1>,<used1>,<total1>,<mem2>,<used2>,<total2>, 
<mem3>,<used3>,<total3> 
OK 
ERROR 
+CMS ERROR: <err> 
Write Command 
Responses 
AT+ CP M S= <mem1> 
[,<mem2>[,<mem3>]] 
+CPMS: <used1>,<total1>,<used2>,<total2>,<used3>,<total3> 
OK 
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ERROR 
+CMS ERROR: <err> 
Execution Command  Responses 
AT+CPMS  Set default value (<mem1>=”SM”,  <mem2>=”SM”
, 
<mem3>=”SM”): 
+CPMS: <used1>,<total1>,<used2>,<total2>,<used3>,<total3> 
OK 
ERROR 
Defined values 
<mem1> 
String type, memory from which messages are read and deleted (commands List Messages 
AT+CMGL, Read Message AT+CMGR and Delete Message AT +CMGD). 
“ME” and “MT”    FLASH message storage 
“SM”             SIM message storage 
“SR”           Status report storage 
(
not used in CDMA/EVDO mode
)
<mem2> 
String type, memory to which writing and sending operations are made (commands Send Message 
from Storage AT +CMSS and Write Message to Memory AT+CMGW). 
“ME” and “MT”    FLASH message storage 
“SM”             SIM message storage 
“SR”           Status report storage  (not used in CDMA/EVDO mode) 
<mem3> 
String type, memory to which received SMS is preferred to be stored (unless forwarded directly to 
TE; refer command New Message Indications AT +CNMI). 
“ME”            FLASH message storage 
“SM”          SIM message storage 
<usedX> 
Integer type, number of messages currently in <memX>. 
<totalX> 
Integer type, total number of message locations in <memX>. 
Examples 
AT+CPMS=? 
+CPMS: ("ME","MT","SM","SR"),("ME","MT","SM","SR"),("ME","SM") 
OK 
AT+CPMS? 
+CPMS:"ME", 0, 23,"ME", 0, 23,"ME", 0, 23 
OK 
AT+CPMS="SM","SM","SM" 
+CPMS:3,50,3,50,3,50 
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OK 
7.3  AT+CMGF   Select SMS message format 
Description 
This command is used to specify the input and output format of the short messages. 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CMGF=? +CMGF: (list of supported <mode>s) 
OK 
ERROR 
Read Command 
Responses 
AT +C MG F?  +CMGF: <mode> 
OK 
ERROR 
Write Command  Responses 
AT+CMGF=<mode> 
OK 
ERROR 
Execution Command 
Responses 
AT+CMGF Set default value (<mode>=0): 
OK 
ERROR 
Defined values 
<mode> 
0  –  PDU mode 
1  –  Text mode 
Examples 
AT+CMGF? 
+CMGF: 0 
OK 
AT+CMGF=? 
+CMGF: (0-1) 
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OK 
AT+CMGF=1 
OK 
7.4  AT+CSCA   SMS service centre address 
Description 
This command is used to update the SMSC address, through which mobile ori
ginated SMS are 
transmitted. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command 
Responses 
AT+CSCA=? OK 
Read Command  Responses 
AT+CSCA? +CSCA: <sca>,<tosca> 
OK 
Write Command 
Responses 
AT+CSCA=<sca>[,<tosca>]  OK 
Defined values 
<sca> 
Service Center Address
, value field in string format, BCD numbers (or GSM 7 bit default alphabet 
characters) are converted to characters of the currently selected TE character set (refer to command 
AT+CSCS), type of address given by <tosca>. 
<tosca> 
SC address Type-of-Address octet in integer format,  when first character of <sca> is + (IRA 43) 
default is 145, otherwise default is 129. 
Examples 
AT+CSCA="+8613012345678" 
OK 
AT+CSCA? 
+CSCA: "+8613010314500", 145 
OK 
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7.5  AT+CSCB    Select cell broadcast message indication 
Description 
The test command returns the supported <mode>s as a compound value. 
The read command displays the accepted message types. 
Depending on the <mode> parameter, the writ
e command adds or deletes the message types 
accepted. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CSCB=?  +CSCB: (list of supported <mode>s) 
OK 
ERROR 
Read Command 
Responses 
AT+ CS C B? +CSCB: <mode>,<mids>,<dcss> 
OK 
ERROR 
Write Command  Responses 
AT+CSCB=<mode>[,<mids
>[,<dcss>]] 
OK 
ERROR 
+CMS ERROR: <err> 
Defined values 
<mode> 
0  –  message types specified in <mids> and <dcss> are accepted. 
1  –  message types specified in <mids> and <dcss> are not accepted. 
<mids> 
String type; all different possible combinations of CBM message identifiers. 
<dcss> 
String type; all different possible combinations of CBM data coding schemes(default is empty 
string) 
Examples 
AT+CSCB=? 
+CSCB: (0-1) 
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OK 
AT+CSCB=0,”15-17,50,86”,”” 
OK 
7.6  AT+CSMP   Set text mode parameters 
Description 
This 
command is used to select values for additional parameters needed when SM is sent to the 
network or placed in storage when text format message mode is selected. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command 
Responses 
AT+CSMP=? OK 
Read Command  Responses 
AT+CSMP? +CSMP: <fo>,<vp>,<pid>,<dcs> 
OK 
Write Command 
Responses 
AT+CSMP=[<fo>[,<vp>[,<p
id>[,<dcs>]]]] 
OK 
Defined values 
<fo> 
Depending on the Command or result code: first octet of GSM 03.40 SMS-DELIVER, 
SMS-SUBMIT (default 17), SMS-STAT U S -REPORT, or SMS-COMMAND (default 2) in integer 
format. SMS status report is supported under text mode if <fo> is set to 49. 
<vp> 
Depending on SMS-SUBMIT <fo> setting: GSM 03.40,TP-Validity-Period either in integer format 
(default 167), in time-
string format, or if is supported, in enhanced format (hexadecimal coded 
string with quotes), (<vp> is in range 0... 255). 
<pid> 
GSM 03.40 TP-Protocol-Identifier in integer format (default 0). 
<dcs> 
GSM 03.38 
SMS Data Coding Scheme (default 0), or Cell Broadcast Data Coding Scheme in 
integer format depending on the command or result code. 
Examples 
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AT+CSMP=17,23,64,244 
OK 
7.7  AT+CSDH   Show text mode parameters 
Description 
This command is used to control whether detailed header information is shown in text mode result 
codes. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CSDH=? +CSDH: (list of supported <show>s) 
OK 
ERROR 
Read Command  Responses 
AT+CSDH? +CSDH: <show> 
OK 
Write Command 
Responses 
AT+CSDH=<show> OK 
ERROR 
Execution Command  Responses 
AT+CSDH Set default value (<show>=0): 
OK 
ERROR 
Defined values 
<show> 
0  –  do not show header values defined in commands AT +CSCA and  AT +CSMP  (<sca>, 
<tosca>, <fo>,  <vp>,  <pid> and <dcs>) nor <length>,  <toda> or  <tooa> in  +CMT, 
AT+CMGL, AT +CMGR result codes for SMS-DELIVERs and SMS-SUBMITs in text 
mode; for SMS-COMMANDs in AT+CMGR result code, do not show <pid>, <mn>, 
<da>, <toda>, <length> or <data> 
1  –  show the values in result codes 
Examples 
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AT+CSDH? 
+CSDH: 0 
OK 
AT+CSDH=1 
OK
7.8  AT+CNMA  New message acknowledgement to ME/TA 
Description 
This  command is used to confirm successful receipt of a new message (SMS-
DELIVER or 
SMS-STATUSREPORT) routed directly to the TE. If ME does not receive acknowledgement within 
required time (network timeout), it will send RP-ERROR to the network. 
NOTE: The execute / write command shall only be used when AT+ CSM S  parameter <service> 
equals 1 (= phase 2+) and appropriate URC has been issued by the module, i.e.: 
  <+CMT> for <mt>=2 incoming message classes 0, 1, 3 and none; 
  <+CMT> for <mt>=3 incoming message classes 0 and 3; 
  <+CDS> for <ds>=1. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CNMA=? if text mode(AT+CMGF=1): 
OK 
if PDU mode (AT+CMGF=0): 
+CNMA: (list of supported <n>s) 
OK 
Write Command  Responses 
AT+CNMA=<n> OK 
ERROR 
+CMS ERROR: <err> 
Execution Command  Responses 
AT+CNMA OK 
ERROR 
+CMS ERROR: <err> 
Defined values 
<n> 
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Parameter required only for PDU mode. 
   0  –    Command operates similarly as execution command in text mode. 
   1  –   Send positive (RP-ACK) acknowledgement to the network. Accepted only in PDU 
mode. 
  2  –    Send negative (RP-ERROR) acknowledgement to the network. Accepted only in PDU 
mode. 
Examples 
AT+CNMI=1,2,0,0,0 
OK 
+CMT:”1380022xxxx”,””,”02/04/03,11 :06 :38+32”<CR><LF> 
Testing   
(receive new short message) 
AT+CNMA(send ACK to the network) 
OK 
AT+CNMA 
+CMS ERROR
:
340 
(the second time return error, it needs ACK only once) 
7.9  AT+CNMI   New message indications to TE 
Description 
This command is used to select the procedure how receiving of new messages from the network is 
indicated to the TE when TE is active, e.g. DTR signal is ON. If TE is inactive (e.g. DTR signal is 
OFF). If set <mt>=2, <mt>=3 or <ds>=1, make sure <mode>=1, otherwise it will return error. 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CNMI=? +CNMI: (list of supported <mode>s),(list of supported <mt>s),(list 
of supported <bm>s),(list of supported <ds>
s),(list of supported 
<bfr>s) 
OK 
Read Command  Responses 
AT +C N MI?  +CNMI: <mode>,<mt>,<bm>,<ds>,<bfr> 
OK 
Write Command  Responses 
AT+CNMI=<mode>[,<mt>[, OK 
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<bm>[,<ds> [,<bfr>]]]] 
ERROR 
+CMS ERROR: <err> 
Execution Command 
Responses 
AT+CNMI Set default value: 
OK 
Defined values 
<mode> 
0   –   
Buffer unsolicited result codes in the TA. If TA result code buffer is full, indications 
can be buffered in some other place 
or the oldest indications may be discarded and 
replaced with the new received indications. 
1   –   
Discard indication and reject new received message unsolicited result codes when 
TA-TE link is reserved (e.g. in on-line data mode). Otherwise forward them directly 
to the TE. 
2   –   Buffer unsolicited result codes in the TA when TA-TE link is reserved (e.g. in on-line 
data mode) and flush them to the TE after reservation. Otherwise forward them 
directly to the TE. 
<mt> 
The rules for storing received SMS d
epend on its data coding scheme, preferred memory storage 
(AT+CPMS) setting and this value: 
0   –   No SMS-DELIVER indications are routed to the TE. 
1   –   If SMS-
DELIVER is stored into ME/TA, indication of the memory location is routed 
to the TE using unsolicited result code: +CMTI: <mem3>,<index>. 
2   –   SMS-
DELIVERs (except class 2 messages and messages in the message waiting 
indication group (store message)) are routed directly to the TE using unsolicited 
result code: 
+CMT:[<alpha>],<length><CR><LF><pdu> (PDU mode enabled); or 
+CMT:<oa>,[<alpha>],<scts>[,<tooa>,<fo>,<pid>,<dcs>,<sca>,<tosca>,<length>] 
<CR> <LF><data> 
(text mode enabled, about parameters in italics, refer command Show Text Mode 
Parameters AT +CSDH). 
3   –   Class 3 SMS-DELIVERs are route
d directly to TE using unsolicited result codes 
defined in <mt>
=2. Messages of other data coding schemes result in indication as 
defined in <mt>=1. 
<bm> 
(
not used in CDMA/EVDO mode
)
The rules for storing received CBMs depend on its data coding scheme, the setting of Select CBM 
Types (AT +CSCB) and this value: 
0  –  No CBM indications are routed to the TE. 
2  –  New CBMs are routed directly to the TE using unsolicited result code: 
+CBM: <length><CR><LF><pdu> (PDU mode enabled); or 
+CBM: <sn>,<mid>,<dcs>,<page>,<pages><CR><LF><data> (text mode enabled) 
<ds> 
(
not used in CDMA/EVDO mode
)
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0  –  No SMS-STATU S -REPORTs are routed to the TE. 
1  –  SMS-S TATU S -REPORTs are routed to the TE using unsolicited result code: 
+CDS: <length><CR><LF><pdu> (PDU mode enabled); or 
+CDS: <fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<st> (text mode enabled) 
2  –  If SMS-STAT U S -REPORT is stored into ME/TA, indication of the memory location is 
routed to the TE using unsolicited result code: +CDSI: <mem3>,<index>. 
<bfr> 
0  –  TA buffer of unsolicited result codes defined within this command is flushed to the TE 
when <mode> 1 to 3 is entered (OK response shall be given before flushing the codes). 
1  –  
TA buffer of unsolicited result codes defined within this command is cleared when 
<mode> 1 to 3 is entered. 
Examples 
AT+CNMI? 
+CNMI: 0,0,0,0,0 
OK 
AT+CNMI=? 
+CNMI: (0,1,2),(0,1,2,3),(0,2),(0,1,2),(0,1) 
OK 
AT+CNMI=2,1 (unsolicited result codes after received messages.) 
OK 
7.10  AT+CGSMS   Select service for MO SMS messages 
Description 
The write command is used to specify the service or service preference that the MT will use to send 
MO SMS messages. 
The test command is used for requesting information on which services and service preferences can 
be set by using the AT + CG S MS write command 
The read command returns the currently selected service or service preference. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES 3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+ CGSMS=? +CGSMS: (list of supported <service>s) 
OK 
Read Command  Responses 
AT+ CGSMS?  +CGSMS: <service> 
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OK 
Write Command  Responses 
AT+ CGSMS=<service> OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<service> 
A numeric parameter which indicates the service or service preference to be used 
0  –  GPRS(value is not really supported and is internally mapped to 2) 
1  –  circuit switched(value is not really supported and is internally mapped to 3) 
2  –  GPRS preferred (use circuit switched if GPRS not available) 
3  –  circuit switched preferred (use GPRS if circuit switched not available) 
Examples 
AT+CGSMS? 
+CGSMS: 3 
OK 
AT+CGSMS=? 
+CGSMS: (0-3) 
OK 
7.11  AT+CMGL   List SMS messages from preferred store 
Description 
This command is used to return messages with status value <stat> from message storage <mem1> 
to the TE. 
If the status of the message is 'received unread', the status in the storage changes to 'received read'. 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CMGL=? 
+CMGL: (list of supported <stat>s) 
OK 
Write Command  Responses 
AT+CMGL=<stat> If text mode (AT+CMGF=1), command successful and SMS-S
UBMITs and/or SMS-DELIVERs: 
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+CMGL:<index>,<stat>,<oa>/<da>,[<alpha>],[<scts>][,<tooa>/<t
oda>,<fo>,<pid>,<dcs>,<sca>,<tosca>,<length>]<CR><LF><data
>[<CR><LF> 
+CMGL:<index>,<stat>,<oa>/<da>,[<alpha>],[<scts>][,<tooa>/<t
oda>,<fo>,<pid>,<dcs>,<sca>,<tosca>,<length>]<CR><LF><data
>[...]] 
OK 
If text mode (AT+CMGF=1), command successful and SMS-
STATUS-REPORTs: 
+CMGL:<index>,<stat>,<fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<s
t>[<CR><LF> 
+CMGL:<index>,<stat>,<fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<s
t>[...]] 
OK 
If text mode (AT+CMGF=1), command successful and SMS-
COMMANDs: 
+CMGL: <index>,<stat>,<fo>,<ct>[<CR><LF> 
+CMGL: <index>,<stat>,<fo>,<ct>[...]] 
OK 
If  text mode (AT+CMGF=1), command successful and CBM 
storage: 
+CMGL:<index>,<stat>,<sn>,<mid>,<page>,<pages> 
<CR><LF><data>[<CR><LF> 
+CMGL:<index>,<stat>,<sn>,<mid>,<page>,<pages> 
<CR><LF><data>[...]] 
OK 
If PDU mode (AT+CMGF=0) and Command successful: 
+CMGL:<index>,<stat>,[<alpha>],<length><CR><LF><pdu>[<C
R><LF> 
+CMGL:<index>,<stat>,[<alpha>],<length><CR><LF><pdu> 
[…]] 
OK 
+CMS ERROR: <err> 
Defined values 
<stat> 
1. Text Mode: 
"REC UNREAD"   received unread message (i.e. new message) 
"REC READ"   received read message 
"STO UNSENT"    stored unsent message   
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"STO SENT"     stored sent message 
"ALL"     all messages 
2. PDU Mode: 
0  –  received unread message (i.e. new message) 
1  –  received read message 
2  –  stored unsent message 
3  –  stored sent message 
4  –  all messages 
<index> 
Integer type; value in the range of location numbers supported by the associated memory and start 
with zero. 
<oa> 
Originating-Address, Address-
Value field in string format; BCD numbers (or GSM 7 bit default 
alphabet characters) are converted to characters of the currently selected TE character set, type of 
address given by <tooa>. 
<da> 
Destination-Address, Address-
Value field in string format; BCD numbers (or GSM 7 bit default 
alphabet characters) are converted to characters of the currently selected TE character set, type of 
address given by <toda>. 
<alpha> 
String type alphanumeric representation of <da> or <oa> 
corresponding to the entry found in MT 
phonebook; implementation of this feature is manufacturer specific; used character set should be 
the one selected with command Select TE Character Set AT +CSCS. 
<scts> 
TP-Service-Centre-Time-Stamp in time-string format (refer <dt>). 
<tooa> 
TP-Originating-Address, Type-of-Address octet in integer format. (default refer <toda>). 
<toda> 
TP-Destination-Address, Type-of-Address octet in integer format. (when first character of <da> is + 
(IRA 43) default is 145, otherwise default is 129). The range of value is from 128 to 255. 
<length> 
Integer type value indicating in the text mode (AT + C M GF
=1) the length of the message body 
<data> in characters; or in PDU mode (AT+CMGF=0), the leng
th of the actual TP data unit in 
octets. (i.e. the RP layer SMSC address octets are not counted in the length) 
<data> 
In the case of SMS: TP-User-Data in text mode responses; format: 
1. If  <dcs> indicates that GSM 7 bit default alphabet is used and <fo> 
indicates that 
TP-User-Data-Header-Indication is not set: 
a. I
f TE character set other than "HEX": ME/TA converts GSM alphabet into current TE 
character set. 
b.  If TE character set is "HEX": ME/TA converts each 7-bit character of GSM 7 bit 
default alphabet into two IRA character long hexadecimal numbers. (e.g. character Π 
(GSM 7 bit default alphabet 23) is presented as 17 (IRA 49 and 55)) 
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2. If <dcs> indicates that 8-bit or UCS2 data coding scheme is used, or <fo> indicates that 
TP-User-Data-Header-Indication is set: ME/TA converts each 8-
bit octet into two IRA 
character long hexadecimal numbers
. (e.g. octet with integer value 42 is presented to TE as 
two characters 2A (IRA 50 and 65)) 
3. If <dcs> indicates that GSM 7 bit default alphabet is used: 
a. If TE character set other than "HEX": 
ME/TA converts GSM alphabet into current TE 
character set. 
b. If TE character set is "HEX": ME/TA converts each 7-bit character of the GSM 7 bit 
default alphabet into two IRA character long hexadecimal numbers. 
4.  If  <dcs> indicates that 8-
bit or UCS2 data coding scheme is used: ME/TA converts each 
8-bit octet into two IRA character long hexadecimal numbers. 
<fo> 
Depending on the command or result code: first octet of GSM 03.40 SMS-DELIVER, 
SMS-SUBMIT (default 17), SMS-STAT U S-REPORT, or SMS-COMMAND (default 2) in integer 
format. SMS status report is supported under text mode if <fo> is set to 49. 
<mr> 
Message Reference 
GSM 03.40 TP-Message-Reference in integer format. 
<ra> 
Recipient Address 
GSM 03.40 TP-Recipient-Address  Address-
Value field in string format;BCD numbers (or GSM 
default alphabet characters) are converted to characters of the currently selected TE character 
set(refer to command AT + CS C S );type of address given by <tora> 
<tora> 
Type of Recipient Address 
GSM 04.11 TP-Recipient-Address Type-of-Address octet in integer format (default refer <toda>) 
<dt> 
Discharge Time 
GSM 03.40 TP-Discharge-Time in time-string format:”yy/MM/dd,hh:mm:ss+zz”,where characters 
indicate year (two last digits),month,day,hour,minutes,seconds and time zone. 
<st> 
Status 
GSM 03.40 TP-Status in integer format 
0…255 
<ct> 
Command Type 
GSM 03.40 TP-Command-Type in integer format 
0…255 
<sn> 
Serial Number 
GSM 03.41 CBM Serial Number in integer format 
<mid> 
Message Identifier 
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GSM 03.41 CBM Message Identifier in integer format 
<page> 
Page Parameter 
GSM 03.41 CBM Page Parameter bits 4-7 in integer format 
<pages> 
Page Parameter 
GSM 03.41 CBM Page Parameter bits 0-3 in integer format 
<pdu> 
In the case of SMS: SC address followed by TPDU 
in hexadecimal format: ME/TA converts each 
octet of TP data unit into two IRA character long hexadecimal numbers
. (e.g. octet with integer 
value 42 is presented to TE as two characters 2A (IRA 50 and 65)). 
Examples 
AT+CMGL=? 
+CMGL: ("REC UNREAD","REC READ","STO UNSENT","STO SENT","ALL") 
OK 
AT+CMGL="ALL" 
+CMGL: 1,"STO UNSENT","+10011",,,145,4 
Hello World 
OK 
7.12  AT+CMGR   Read message 
Description 
This  command  is used to 
return message with location value <index> from message storage 
<mem1> to the TE. 
SIM PIN  References 
YES  3GPP TS 27.005 
Syntax 
Test Command 
Responses 
AT+CMGR=? OK 
Write Command 
Responses 
AT+CMGR=<index> If  text mode (AT+CMGF=1), command successful and SMS-
DELIVER: 
+CMGR: <stat>,<oa>,[<alpha>],<scts>[,<tooa>,<fo>,<pid>,<dcs>
, 
<sca>, <tosca>, <length>]<CR><LF><data> 
OK 
If  text  mode (AT+CMGF=1), command successful and SMS-
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SUBMIT: 
+CMGR:<stat>,<da>,[<alpha>][,<toda>,<fo>,<pid>,<dcs>,[<vp>], 
<sca>, <tosca>,<length>]<CR><LF><data> 
OK 
If  text mode (AT+CMGF=1), command successful and SMS-
STATUS-REPORT: 
+CMGR: <stat>,<fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<st> 
OK 
If  text mode (AT+CMGF=1), command successful and SMS-
COMMAND: 
+CMGR:<stat>,<fo>,<ct>[,<pid>,[<mn>],[<da>],[<toda>],<length
>]<CR><LF><data> 
OK 
If  text mode (AT+CMGF=1), com
mand successful and CBM 
storage: 
+CMGR:<stat>,<sn>,<mid>,<dcs>,<page>,<pages><CR><LF><d
ata> 
OK 
If PDU mode (AT+CMGF=0) and Command successful: 
+CMGR:<stat>,[<alpha>],<length><CR><LF><pdu> 
OK 
+CMS ERROR: <err> 
Defined values 
<index> 
Integer type; valu
e in the range of location numbers supported by the associated memory and start 
with zero. 
<stat> 
1.Text Mode: 
"REC UNREAD"   received unread message (i.e. new message) 
"REC READ"   received read message 
"STO UNSENT"    stored unsent message   
"STO SENT"     stored sent message 
2. PDU Mode: 
0  –  received unread message (i.e. new message) 
1  –  received read message. 
2  –  stored unsent message. 
3  –  stored sent message 
<oa> 
Originating-Address, Address-Value field in string format; BCD numbers (or GSM 7 bit default 
alphabet characters) are converted to characters of the currently selected TE character set, type of 
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address given by <tooa>. 
<alpha> 
String type alphanumeric representation of <da> or <oa> corresponding to the entry found in MT 
phonebook; implem
entation of this feature is manufacturer specific; used character set should be 
the one selected with command Select TE Character Set AT +CSCS. 
<scts> 
TP-Service-Centre-Time-Stamp in time-string format (refer <dt>). 
<tooa> 
TP-Originating-Address, Type-of-Address octet in integer format. (default refer <toda>). 
<fo> 
Depending on the command or result code: first octet of GSM 03.40 SMS-DELIVER, 
SMS-SUBMIT (default 17), SMS-STAT U S -REPORT, or SMS-COMMAND (default 2) in integer 
format. SMS status report is supported under text mode if <fo> is set to 49. 
<pid> 
Protocol Identifier 
GSM 03.40 TP-Protocol-Identifier in integer format 
0…255 
<dcs> 
D
epending on the command or result code: SMS Data Coding Scheme (default 0), or Cell 
Broadcast Data Coding Scheme in integer format. 
<sca> 
RP SC address Address-
Value field in string format; BCD numbers (or GSM 7 bit default alphabet 
characters) are converted to characters of the currently selected TE character set, type of address 
given by <tosca>. 
<tosca> 
RP SC address Type-of-Address octet in integer format (default refer <toda>). 
<length> 
Integer type value indicating in the text mode (AT +CMGF
=1) the length of the message body 
<data> > (or <cdata>) in characters; or in PDU mode (AT+CMGF=0), the length of the actual TP 
data unit in octets. (i.e. the RP layer SMSC address octets are not counted in the length). 
<data> 
In the case of SMS: TP-User-Data in text mode responses; format: 
1  –  If  <dcs> indicates that GSM 7 bit default alphabet is used and <fo> indicat
es that 
TP-User-Data-Header-Indication is not set: 
a. I
f TE character set other than "HEX": ME/TA converts GSM alphabet into current 
TE character set. 
b. If TE character set is "HEX": ME/TA converts each 7-bit character of GSM 7 bit 
default alphabet into two IRA character long hexadecimal numbers. (e.g. character 
Π (GSM 7 bit default alphabet 23) is presented as 17 (IRA 49 and 55)). 
2  –  If <dcs> indicates that 8-bit or UCS2 data coding scheme is used, or <fo> indicates that 
TP-User-Data-Header-Indication is set: ME/TA converts each 8-bit octet into two IRA 
character long hexadecimal numbers. (eg. octet with integer value 42 is presented to TE 
as two characters 2A (IRA 50 and 65)). 
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3  –  If <dcs> indicates that GSM 7 bit default alphabet is used: 
a. If TE c
haracter set other than "HEX": ME/TA converts GSM alphabet into current 
TE character set. 
b. If TE character set is "HEX": ME/TA converts each 7-bit character of the GSM 7 
bit default alphabet into two IRA character long hexadecimal numbers. 
4  –  If  <dcs> indicates that 8-
bit or UCS2 data coding scheme is used: ME/TA converts 
each 8-bit octet into two IRA character long hexadecimal numbers. 
<da> 
Destination-Address, Address-
Value field in string format; BCD numbers (or GSM 7 bit default 
alphabet characters) are converted to characters of the currently selected TE character set, type of 
address given by <toda>. 
<toda> 
TP-Destination-Address, Type-of-Address octet in integer format. (when first character of <da> is + 
(IRA 43) default is 145, otherwise default is 129). The range of value is from 128 to 255. 
<vp> 
Depending on SMS-SUBMIT  <fo> setting: TP-Validity-Period either in integer format (default 
167) or in time-string format (refer <dt>). 
<mr> 
Message Reference 
GSM 03.40 TP-Message-Reference in integer format. 
<ra> 
Recipient Address 
GSM 03.40 TP-Recipient-Address Address-
Value field in string format;BCD numbers(or GSM 
default alphabet characters) are converted to characters of the currently selected TE character 
set(refer to command AT + CS C S );type of address given by <tora> 
<tora> 
Type of Recipient Address 
GSM 04.11 TP-Recipient-Address Type-of-Address octet in integer format (default refer <toda>) 
<dt> 
Discharge Time 
GSM 03.40 TP-Discharge-Time in time-string format:”yy/MM/dd,hh:mm:ss+zz”,where characters 
indicate year (two last digits),month,day,hour,minutes,seconds and time zone. 
<st> 
Status 
GSM 03.40 TP-Status in integer format 
0…255 
<ct> 
Command Type 
GSM 03.40 TP-Command-Type in integer format 
0…255 
<mn> 
Message Number 
GSM 03.40 TP-Message-Number in integer format 
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<sn> 
Serial Number 
GSM 03.41 CBM Serial Number in integer format 
<mid> 
Message Identifier 
GSM 03.41 CBM Message Identifier in integer format 
<page> 
Page Parameter 
GSM 03.41 CBM Page Parameter bits 4-7 in integer format 
<pages> 
Page parameter 
GSM 03.41 CBM Page Parameter bits 0-3 in integer format 
<pdu> 
In the case of SMS: SC address followed by TPDU in hexadecimal format: ME/TA converts each 
octet of TP data unit into two IRA character long hexadecimal numbers. (eg. octet with integer 
value 42 is presented to TE as two characters 2A (IRA 50 and 65)). 
Examples 
AT+CMGR=1 
+CMGR: "STO UNSENT","+10011",,145,17,0,0,167,"+8613800100500",145,4 
Hello World 
OK 
7.13  AT+CMGS   Send message 
Description 
This command is used to send message from a TE to the network (SMS-SUBMIT). 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CMGS=? OK 
Write Command 
Responses 
If text mode (AT+CMGF=1): 
AT+ CM G S=<da>[,<toda>]<
CR>Text is entered. 
<CTRL-Z/ESC> 
If PDU mode(AT+CMGF=
If sending successfully: 
+CMGS: <mr> 
OK 
If cancel sending: 
OK 
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0): 
AT+ CM G S=<length><CR> 
PDU is entered 
<CTRL-Z/ESC> 
If sending fails: 
ERROR 
If sending fails: 
+CMS ERROR: <err> 
Defined values 
<da> 
Destination-Address, Address-Value field in string format; BCD numbers (or GSM 7 bit default 
alphabet characters) are converted to characters of the currently selected TE character set, type of 
address given by <toda>. 
<toda> 
TP-Destination-Address, Type-of-Address octet in integer format. (when first character of <da> is + 
(IRA 43) default is 145, otherwise default is 129). The range of value is from 128 to 255. 
<length> 
integer type value indicating in the text mode (AT+CMGF=1) the length of the message body 
<data> > (or <cdata>) in characters; or in PDU mode (AT+CMGF=0), the length of the actual TP 
data unit in octets. (i.e. the RP layer SMSC address octets are not counted in the length) 
<mr> 
Message Reference 
GSM 03.40 TP-Message-Reference in integer format. 
NOTE: In text mode, the maximum length of an SMS depends on the 
used coding scheme: It is 
160 characters if the 7 bit GSM coding scheme is used. 
Examples 
AT+CMGS="13012832788"<CR>(TEXT MODE) 
> ABCD<ctrl-Z/ESC> 
+CMGS: 46 
OK 
7.14  AT+CMSS   Send message from storage 
Description 
This command is used to send message with location value <index>  from preferred message 
storage <mem2> to the network (SMS-SUBMIT or SMS-COMMAND). 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
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AT+CMSS=? 
OK 
Write Command  Responses 
AT+CMSS= 
<index> [,<da>[,<toda>]] 
+CMSS: <mr> 
OK 
ERROR 
If sending fails: 
+CMS ERROR: <err> 
Defined values 
<index> 
Integer type; value in the range of location numbers supported by the associated memory and start 
with zero. 
<da> 
Destination-Address, Address-Value fie
ld in string format; BCD numbers (or GSM 7 bit default 
alphabet characters) are converted to characters of the currently selected TE character set, type of 
address given by <toda>. 
<mr> 
Message Reference 
GSM 03.40 TP-Message-Reference in integer format. 
<toda> 
TP-Destination-Address, Type-of-Address octet in integer format. (when first character of <da> is + 
(IRA 43) default is 145, otherwise default is 129). The range of value is from 128 to 255. 
NOTE:
 In text mode, the maximum length of an SMS depends on the 
used coding scheme: It is 
160 characters if the 7 bit GSM coding scheme is used. 
Examples 
AT+CMSS=3 
+CMSS: 0 
OK 
AT+CMSS=3,"13012345678" 
+CMSS: 55 
OK 
7.15  AT+CMGW   Write message to memory 
Description   
This  command is used to store message (either SMS-DELIVER or SMS-
SUBMIT) to memory 
storage <mem2>. 
SIM PIN References 
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YES  3GPP TS 27.005 
Syntax 
Test Command 
Responses 
AT+CMGW=? OK 
Write Command  Responses 
If text mode(AT+CMGF=1): 
AT+CMGW=<oa>/<da>[,<t
ooa>/<toda>[,<stat>]]<CR>
Text is entered. 
<CTRL-Z/ESC> 
If PDU mode(AT+CMGF=
0): 
AT+CMGW=<length>[,<sta
t>]<CR>PDU is entered. 
<CTRL-Z/ESC> 
If write successfully: 
+CMGW: <index> 
OK 
If cancel write: 
OK 
If write fails: 
ERROR 
If write fails: 
+CMS ERROR: <err> 
Defined values 
<index> 
Integer type; val
ue in the range of location numbers supported by the associated memory and start 
with zero. 
<oa> 
Originating-Address, Address-
Value field in string format; BCD numbers (or GSM 7 bit default 
alphabet characters) are converted to characters of the currently selected TE character set, type of 
address given by <tooa>. 
<tooa> 
TP-Originating-Address, Type-of-Address octet in integer format. (default refer <toda>). 
<da> 
Destination-Address, Address-Value field in string format; BCD numbers (or GSM 7 bit default 
alphabet characters) are converted to characters of the currently selected TE character set, type of 
address given by <toda>. 
<toda> 
TP-Destination-Address, Type-of-Address octet in integer format. (when first character of <da> is + 
(IRA 43) default is 145, otherwise default is 129). The range of value is from 128 to 255. 
<length> 
Integer type value indicating in the text mode (AT +CMGF
=1) the length of the message body 
<data> > (or <cdata>) in characters; or in PDU mode (AT+CMGF=0), the length of the actual TP 
data unit in octets. (i.e. the RP layer SMSC address octets are not counted in the length). 
<stat> 
1. Text Mode: 
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"STO UNSENT"    stored unsent message   
"STO SENT"     stored sent message 
2. PDU Mode: 
2  –  stored unsent message 
3  –  stored sent message 
NOTE: In text mode, the maximum length of an SMS depends on the 
used coding scheme: It is 
160 characters if the 7 bit GSM coding scheme is used. 
Examples 
AT+CMGW="13012832788" <CR> (TEXT MODE) 
ABCD<ctrl-Z/ESC> 
+CMGW:1   
OK 
7.16  AT+CMGD   Delete message 
Description 
This command is used to delete message from preferred message storage <mem1> location 
<index>. If <delflag> is present and not set to 0 then the ME shall ignore <index> and follow the 
rules for <delflag> shown below. 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command  Responses 
AT+CMGD=? +CMGD: (list of supported <index>
s)[,(list of supported 
<delflag>s)] 
OK 
Write Command  Responses 
AT+CMGD= 
<index>[,<delflag>] 
OK 
ERROR 
+CMS ERROR: <err> 
Defined values 
<index> 
Integer type; 
value in the range of location numbers supported by the associated memory and start 
with zero. 
<delflag> 
0  –  (or omitted) Delete the message specified in <index>. 
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1  –  Delete all read messages from preferred message storage, leaving unread messages and 
stored mobile originated messages (whether sent or not) untouched. 
2  –  Delete all read messages from preferred message storage and sent mobile originated 
messages, leaving unread messages and unsent mobile originated messages untouched. 
3  –    Delete all read messages from preferred message storage, sent and unsent mobile 
originated messages leaving unread messages untouched. 
4  –  Delete all messages from preferred message storage including unread messages. 
NOTE: If set <delflag>=1, 2, 3 or 4, <index> is omitted, such as AT + C M GD =,1. 
Examples 
AT+CMGD=1 
OK 
7.17  AT+CMGMT   Change message status 
Description 
This command is used to change the message status. If the status is unread, it will be changed read. 
Other statuses don’t change. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CMGMT=? OK 
Write Command  Responses 
AT+CMGMT=<index> OK 
ERROR 
+CMS ERROR: <err> 
Defined values 
<index> 
Integer type; value in the range of location numbers supported by the associated memory and start 
with zero. 
Examples 
AT+CMGMT=1 
OK 
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7.18  AT+CMVP   Set message valid period 
Description 
This command is used to set valid period for sending short message. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES 
Vendor 
Syntax 
Test Command  Responses 
AT+CMVP=? +CMVP: (list of supported <vp>s) 
OK 
Read Command  Responses 
AT+ CM V P?  +CMVP:<vp> 
OK 
Write Command  Responses 
AT+CMVP=<vp> 
OK 
ERROR 
+CMS ERROR: <err> 
Defined values 
<vp> 
Validity period value: 
0 to 143      (<vp>+1) x 5 minutes (up to 12 hours) 
144 to 167        12 hours + (<vp>-143) x 30 minutes 
168 to 196    (<vp>-166) x 1 day 
197 to 255    (<vp>-192) x 1 week 
Examples 
AT+CMVP=167 
OK 
AT+CMVP? 
+CMVP: 167 
OK 
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7.19  AT+CMGRD   Read and delete message 
Description 
This command is used to read message, and delete the message at the same time. It integrate 
AT+CMGR and AT +CMGD, but it doesn’t change the message status. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CMGRD=? 
OK 
Write Command  Responses 
AT+CMGRD=<index> If text mode(AT+CMGF=1),command successful  and SMS-DE-
LIVER: 
+CMGRD:<stat>,<oa>,[<alpha>],<scts>[,<tooa>,<fo>,<pid>,<dcs
>, <sca>,<tosca>,<length>]<CR><LF><data> 
OK 
If  text mode(AT+CMGF=1),command successful and SMS-SU- 
BMIT: 
+CMGRD:<stat>,<da>,[<alpha>][,<toda>,<fo>,<pid>,<dcs>,[<vp
>], <sca>,<tosca>,<length>]<CR><LF><data> 
OK 
If text mode(AT+CMGF=1),command successful and SMS-STA- 
TUS-  REPORT: 
+CMGRD: <stat>,<fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<st> 
OK 
If text mode(AT+CMGF=1),command successful and SMS-CO-
MMAND: 
+CMGRD:<stat>,<fo>,<ct>[,<pid>,[<mn>],[<da>],[<toda>],<lengt
h><CR><LF><data>] 
OK 
If text mode(AT+CMGF=1),command successful and CBM sto- 
rage: 
+CMGRD:<stat>,<sn>,<mid>,<dcs>,<page>,<pages><CR><LF><
data> 
OK 
If PDU mode(AT+CMGF=0) and command successful: 
+CMGRD: <stat>,[<alpha>],<length><CR><LF><pdu> 
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OK 
ERROR 
+CMS ERROR: <err> 
Defined values 
Refer to command AT +C MGR. 
Examples 
AT+CMGRD=6 
+CMGRD:"REC READ","+8613917787249",,"06/07/10,12:09:38+32",145,4,0,0, "+86138002105 
00",145,4 
How do you do 
OK 
7.20  AT+CMGSEX    Send message 
Description   
This command is used to send message from a TE to the network (SMS-SUBMIT). 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES  3GPP TS 27.005 
Syntax 
Test Command 
Responses 
AT+CMGSEX=? OK 
Write Command 
Responses 
If text mode (AT+CMGF=1): 
AT+ CM G SEX=<da>[,<toda
>][,<mr>,  <msg_seg>, 
<msg_total>]<CR>Text is 
entered. 
<CTRL-Z/ESC> 
If sending successfully: 
+CMGSEX: <mr> 
OK 
If cancel sending: 
OK 
If sending fails: 
ERROR 
If sending fails: 
+CMS ERROR: <err> 
Defined values 
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<da> 
Destination-Address, Address-
Value field in string format; BCD numbers (or GSM 7 bit default 
alphabet characters) are converted to characters of the currently selected TE character set, type of 
address given by <toda>. 
<toda> 
TP-Destination-Address, Type-of-Address octet in integer format. (When first character of <da> is 
+ (IRA 43) default is 145, otherwise default is 129). The range of value is from 128 to 255. 
<mr> 
Message Reference 
GSM 03.40 TP-Message-Reference in integer format. 
<msg_seg> 
The segment number for long sms 
<msg_total> 
The total number of the segments for long sms. Its range is from 2 to 255. 
NOTE:
 In text mode, the maximum length of an SMS depends on the used coding scheme: For 
single SMS, it is 160 characters if the 7 bit GSM coding scheme is used; For multiple long sms, it is 
153 characters if the 7 bit GSM coding scheme is used. 
Examples 
AT+CMGSEX="13012832788", 190, 1, 2<CR>(TEXT MODE) 
> ABCD<ctrl-Z/ESC> 
+CMGSEX: 190 
OK 
AT+CMGSEX="13012832788", 190, 2, 2<CR>(TEXT MODE) 
> EFGH<ctrl-Z/ESC> 
+CMGSEX: 190 
OK 
7.21  AT+CMSSEX   Send multi messages from storage 
Description   
This command is used to send messages with location value <index1>,<index2>,<index3>… from 
preferred message storage <mem2> to the network (SMS-SUBMIT or SMS-COMMAND).The 
max count of index is 13 one time. 
Note: This command not support in CDMA/EVDO mode 
SIM PIN References 
YES 3GPP TS 27.005 
Syntax 
Test Command 
Responses 
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AT+CMSSEX=? 
OK 
Write Command  Responses 
AT+CMSSEX= 
<index> [,<index >[,… ]] 
+CMSSEX: <mr>[,<mr>[,…]] 
OK 
ERROR 
If sending fails: 
[+CMSSEX: <mr>[,<mr>[,…]]] 
+CMS ERROR: <err> 
Defined values 
<index> 
Integer type; va
lue in the range of location numbers supported by the associated memory and start 
with zero. 
<mr> 
Message Reference 
GSM 03.40 TP-Message-Reference in integer format. 
NOTE: In text mode, the maximum length of an SMS depends on the used coding scheme: It is 
160 characters if the 7 bit GSM coding scheme is used. 
Examples 
AT+CMSSEX=0,1 
+CMSSEX: 239,240 
OK 
AT+CMSSEX=0,1 
+CMSSEX: 238 
+CMS ERROR: Invalid memory index 
7.22  AT+CMGP    Set cdma/evdo text mode parameters 
Description   
The  command is used to select 
values for additional parameters needed when SM is sent to the 
network or placed in storage when text format message mode is selected. 
NOTE: take effect in CDMA/EVDO mode 
SIM PIN References 
NO  3GPP TS 27.005 
Syntax 
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Test Command 
Responses 
AT+CMGP=? OK 
Read Command 
Responses 
AT+CMGP?  +CMGP: <tid>,<vpf>,<vp>,<ddtf>,<ddt> 
OK 
Write Command 
Responses 
AT+CMGP=[Tid][,<vpf>,<v
p>[,<ddtf>,<ddt>]] 
OK 
Defined values 
<tid> 
Teleservice ID, value maybe 4095,4096,4097,4098,4099,4100,4101,4102 
Default 4098 
<vpf> 
Valid Period Format 
0, Absolute 
1, Relative 
<vp> 
Valid Period   
“YY/MM/DD,HH/MM/SS” if vpf=0, 
Integer not exceed 248 if vpf=1 
<ddtf> 
Deferred Delivery Time Format 
0, Absolute 
1, Relative 
<ddt> 
Deferred Delivery Time   
“YY/MM/DD,HH/MM/SS” if ddtf=0, 
Integer not exceed 248 if ddtf=1 
Examples 
AT+CMGP=4098,0,”11/04/22,16:21:00”,1,12 
OK 
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8   AT Commands for Phonebook 
8.1  AT+CPBS   Select phonebook memory storage 
Description   
This command selects the active phonebook storage,i.e.the phonebook storage that all subsequent 
phonebook commands will be operating on. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CPBS=? 
+CPBS: (list of supported <storage>s) 
OK 
Read Command  Responses 
AT+CPBS? +CPBS: <storage>[,<used>,<total>] 
OK 
+CME ERROR: <err> 
Write Command  Responses 
AT+CPBS=<storage> 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command 
Responses 
AT+CPBS  Set default value “SM”: 
OK 
Defined values 
<storage> 
Values reserved by the present document: 
"DC"   ME dialed calls list 
          Capacity: max. 100 entries 
          AT+ C P B W command is not applicable to this storage. 
"MC"     ME missed (unanswered received) calls list 
          Capacity: max. 100 entries 
          AT+ C P B W command is not applicable to this storage. 
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"RC"   ME received calls list 
          Capacity: max. 100 entries 
          AT+ C P B W command is not applicable to this storage. 
"SM"   SIM phonebook 
          Capacity: depending on SIM card 
"ME"    Mobile Equipment phonebook 
          Capacity: max. 500 entries 
"FD"      SIM fixdialling-phonebook 
          Capacity:depending on SIM card 
"ON"      MSISDN list 
          Capacity:depending on SIM card 
"LD"      Last number dialed phonebook 
          Capacity: depending on SIM card 
          AT+ C P B W command is not applicable to this storage     
"EN"      Emergency numbers 
          Capacity: depending on SIM card 
          AT+ C P B W command is not applicable to this storage.     
<used> 
Integer type value indicating the number of used locations in selected memory. 
<total> 
Integer type value indicating the total number of locations in selected memory. 
Examples 
AT+CPBS=? 
+CPBS: ("SM","DC","FD","LD","MC","ME","RC","EN","ON") 
OK 
AT+CPBS=”SM” 
OK 
AT+CPBS? 
+CPBS: "SM",1,200 
OK 
8.2  AT+CPBR   Read phonebook entries 
Description 
This command gets the record information from the selected memory storage in phonebook. If the 
storage is selected as “SM” 
then the command will return the record in SIM phonebook, the same to 
others. 
SIM PIN References 
YES  3GPP TS 27.007 
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Syntax 
Test Command  Responses 
AT+CPBR=? +CPBR: (<minIndex>-<maxIndex>), [<nlength>], [<tlength>] 
OK 
+CME ERROR: <err> 
Write Command  Responses 
AT+CPBR= 
<index1>[,<index2>] 
[+CPBR: <index1>,<number>,<type>,<text>[<CR><LF> 
+CPBR: <index2>,<number>,<type>,<text>[…]]] 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<index1> 
Integer type value in the range of location numbers of phonebook memory.                     
<index2> 
Integer type value in the range of location numbers of phonebook memory.   
<index> 
Integer type.the current position number of the Phonebook index. 
<minIndex> 
Integer type the minimum <index> number. 
<maxIndex> 
Integer type the maximum <index> number 
<number> 
String type, phone number of format <type>, the maximum length is <nlength>. 
<type> 
Type of phone number octet in integer format, default 145 when dialing string includes international 
access code character "+", otherwise 129. 
<text> 
String type field of maximum length <tlength>; often this value is set as name. 
<nlength> 
Integer type value indicating the maximum length of field <number>. 
<tlength> 
Integer type value indicating the maximum length of field <text>. 
Examples 
AT+CPBS? 
+CPBS: "SM",2,200 
OK 
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AT+CPBR=1,10 
+CPBR: 1,"1234567890",129,"James"                              
+CPBR: 2,"0987654321",129,"Kevin" 
OK  
8.3  AT+CPBF   Find phonebook entries 
Description   
This command finds the record in phonebook  (from the current phonebook memory storage 
selected with AT+CPBS) which alphanumeric field has substring <findtext>.If <findtext> is null, it 
will lists all the entries. 
SIM PIN References 
YES 
3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CPBF=? +CPBF: [<nlength>],[<tlength>] 
OK 
+CME ERROR: <err> 
Write Command  Responses 
AT+CPBF=[<findtext>]  [+CPBF: <index1>,<number>,<type>,<text>[<CR><LF> 
+CPBF: <indexN>,<number>,<type>,<text>[…]]] 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<findtext> 
String type, 
this value is used to find the record. Character set should be the one selected with 
command AT+CSCS. 
<index> 
Integer type values in the range of location numbers of phonebook memory. 
<number> 
String type, phone number of format <type>, the maximum length is <nlength>. 
<type> 
Type of phone number octet in integer format, default 145 when dialing string includes international 
access code character "+", otherwise 129. 
<text> 
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String type field of maximum length <tlength>; Often this value is set as name. 
<nlength> 
Integer type value indicating the maximum length of field <number>. 
<tlength> 
Integer type value indicating the maximum length of field <text>. 
Examples 
AT+CPBF=" James "  
+CPBF: 1,"1234567890",129," James "  
OK 
8.4  AT+CPBW   Write phonebook entry 
Description   
This command writes phonebook entry in location number <index> 
in the current phonebook 
memory storage selected with AT+CPBS. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CPBW=? 
+CPBW:(list of supported <index>s),[<nlength>], 
(list of supported <type>s),[<tlength>] 
OK 
+CME ERROR:<err> 
Write Command  Responses 
AT+CPBW=[<index>][,<nu
mber>[,<type>[,<text>]]] 
OK 
ERROR 
+CME ERROR:<err> 
Defined values 
<index> 
Integer type values in the range of location numbers of phonebook memory.If <index> is not given, 
the first free entry will be used. If <index> is given as the only 
parameter, the phonebook entry 
specified by <index> is deleted.If record number <index> already exists, it will be overwritten. 
<number> 
String type,  phone number of format <type>,  the maximum length is  <nlength>.It m
ust be an 
non-empty string. 
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<type> 
Type of address octet in integer format,  The range of value is from 129  to 255. 
If <number> 
contains a leading “+” <type> = 145 (international) is used.Supported value are: 
145    –    when dialling string includes international access code character “+” 
161  –  national number.The network support for this type is optional 
177  –  network specific number,ISDN format 
129    –    otherwise 
NOTE: Other value refer TS 24.008 [8] subclause 10.5.4.7. 
<text> 
String type field of maximum length <tlength>
; character set as specified by command Select TE 
Character Set AT+CSCS. 
<nlength> 
Integer type value indicating the maximum length of field <number>. 
<tlength> 
Integer type value indicating the maximum length of field <text>. 
NOTE:
If the parameters of <type> and <text> are omitted and the first character of <number> is 
‘+’,it will specify <type> as 145(129 if the first character isn’t ‘+’) and <text> as NULL.
Examples 
AT+CPBW=3,"88888888",129,"John" 
OK 
AT+CPBW=,”6666666”,129,”mary” 
OK 
AT+CPBW=1 
OK 
8.5  AT+CNUM    Subscriber number 
Description 
Execution command returns the MSISDNs related to the subscriber (this information can be stored 
in the SIM or in the ME). If subscriber has different MSISDN for different services, each MSISDN 
is returned in a separate line. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CNUM=? 
OK 
Execution Command  Responses 
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AT+CNUM 
[+CNUM: <alpha>,<number>,<type>[<CR><LF> 
+CNUM: <alpha>, <number>,<type> [...]]] 
OK 
+CME ERROR: <err> 
Defined values 
<alpha> 
Optional alphanumeric string associated with <number>, 
used character set should be the one 
selected with command Select TE Character Set   AT +CSCS. 
<number> 
String type phone number of format specified by <type>. 
<type> 
Type of address octet in integer format.see also AT+CPBR <type> 
Examples 
AT+CNUM 
+CNUM: "","13697252277",129 
OK 
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9   AT Commands for GPRS 
9.1  AT+CGREG   GPRS network registration status 
Description   
This command controls the presentation of an unsolicited result code “+CGREG: <stat>” when 
<n>=1 and there is a change in the MT's GPRS network registration status. 
The read command returns the status of result code presentation and an integer <stat> which shows 
Whether the network has currently indicated the registration of the MT. 
SIM PIN References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGREG=? +CGREG: (list of supported <n>s) 
OK 
Read Command 
Responses 
AT+ CGREG? 
+CGREG: <n>,<stat>[,<lac>,<ci>] 
OK 
Write Command  Responses 
AT+CGREG=<n> 
OK 
Execution Command Responses 
AT+CGREG Set default value: 
OK 
Defined values 
<n> 
0  –  disable network registration unsolicited result code 
1  –  enable network registration unsolicited result code +CGREG: <stat> 
2  –  there is a change in the ME network registration status or a change of the network cell: 
      +CGREG: <stat>[,<lac>,<ci>] 
<stat> 
0  –  not registered, ME is not currently searching an operator to register to 
1  –  registered, home network 
2  –  not registered, but ME is currently trying to attach or searching an operator to register 
to 
3  –  registration denied 
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Examples 
AT+CGREG=? 
+CGREG: (0-1) 
OK 
AT+CGREG? 
+CGREG: 0,0 
OK 
9.2  AT+CGATT    Packet domain attach or detach 
Description 
The write command is used to attach the MT to, or detach the MT from, the Packet Domain service. 
The read command returns the current Packet Domain service state. 
SIM PIN References 
YES 3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGATT=?  +CGATT: (list of supported <state>s) 
OK 
ERROR 
Read Command  Responses 
AT+CGATT?  +CGATT: <state> 
OK 
4  –  unknown 
5  –  registered, roaming 
<lac> 
Two bytes location area code in hexadecimal format (e.g.”00C3” equals 193 in decimal). 
NOTE:  The <lac> not supported in CDMA/HDR mode 
<ci> 
Cell ID in hexadecimal format. 
GSM : Maximum is two byte 
WCDMA : Maximum is four byte 
TDS-CDMA : Maximum is four byte 
NOTE:  The <ci> not supported in CDMA/HDR mode 
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ERROR 
Write Command 
Responses 
AT+CGATT=<state> OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<state> 
Indicates the state of Packet Domain attachment: 
0  –  detached 
1  –  attached 
Examples 
AT+CGATT? 
+CGATT: 0 
OK 
AT+CGATT=1 
OK 
9.3  AT+CGACT   PDP context activate or deactivate 
Description 
The write command is used to activate or deactivate the specified PDP context (s). This command is  
not used in CDMA/EVDO mode. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGACT=?  +CGACT: (list of supported <state>s) 
OK 
Read Command 
Responses 
AT+CGACT?  +CGACT: [<cid>, <state> [<CR><LF> 
+CGACT: <cid>, <state> 
[...]]] 
OK 
Write Command  Responses 
AT+CGACT=<state> OK 
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[,<cid>] 
ERROR 
+CME ERROR: <err> 
Defined values 
<state> 
Indicates the state of PDP context activation: 
0  –  deactivated 
1  –  activated 
<cid> 
A  numeric parameter which specifies a particular PDP context definition (see AT +CGDCONT 
command). 
1…24,100…179 
Examples 
AT+CGACT? 
+CGACT: 1,1 
OK 
AT+CGACT=? 
+CGACT: (0,1) 
OK 
AT+CGACT=0,1 
OK 
9.4  AT+CGDCONT   Define PDP context 
Description   
The set command specifies PDP context param
eter values for a PDP context identified by the 
(local) context identification parameter <cid>
. The number of PDP contexts that may be in a 
defined state at the same time is given by the range returned by the test command. A special form of 
the write command (AT+CGDCONT=<cid>)  causes the values for context <cid> 
to become 
undefined.   
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGDCONT=? +CGDCONT: (range of supported<cid>s),<PDP_type>
,,,(list of 
supported  <d_comp>s),(list of supported  <h_comp>
s)(list of 
<ipv4_ctrl>s),(list of <emergency_flag>s) 
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OK 
ERROR 
Read Command  Responses 
AT+CGDCONT? +CGDCONT: [<cid>, <PDP_type>, <APN>,<PDP_addr>, 
<d_comp>, <h_comp>,<ipv4_ctrl>,<emergency_flag>[<CR><LF> 
+CGDCONT: <cid>, <PDP_type>, <APN>, <PDP_addr>, 
<d_comp>, <h_comp>,< ipv4_ctrl>,<emergency_flag>[...]]] 
OK 
ERROR 
Write Command 
Responses 
AT+CGDCONT=<cid>[,<P
DP_type>[,<APN>[,<PDP_a
ddr>[,<d_comp>[,<h_comp>
][,<ipv4_ctrl>[,<emergency_
flag>]]]]]] 
OK 
ERROR 
Execution Command Responses 
AT+CGDCONT 
OK 
ERROR 
Defined values 
<cid> 
(PDP Context Identifier) a numeric parameter which specifies a particular PDP context definition. 
The parameter is local to the TE-MT interface and is used in other PDP context-related commands. 
The range of permitted values (minimum value = 1) is returned by the test form of the command. 
1…24,100…179 
<PDP_type> 
(Packet Data Protocol type) a string parameter which specifies the type of packet data protocol. 
IP   Internet Protocol 
PPP   Point to Point Protocol 
IPV6  Internet Protocol Version 6 
IPV4V6    Dual PDN Stack 
<APN> 
(Access Point Name) a string parameter which is a logical name that is used to select the GGSN or 
the external packet data network. 
<PDP_addr> 
A string parameter that identifies the MT in the address space applicable to the PDP. 
R
ead command will continue to return the null string even if an address has been allocated during 
the PDP startup procedure. The allocated address may be read using command AT +CGPADDR. 
<d_comp> 
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A numeric parameter that controls PDP data compression, this value may depend on platform: 
0  –  off (default if value is omitted) 
1  –  on 
2  –  V.42bis 
<h_comp> 
A numeric parameter that controls PDP header compression, this value may depend on platform: 
0  –  off (default if value is omitted) 
1  –  on 
2  –  RFC1144 
3  –  RFC2507 
4  –  RFC3095 
<ipv4_ctrl> 
Parameter that controls how the MT/TA requests to get the IPv4 address information: 
0  –  Address Allocation through NAS Signaling   
1  –  on 
<emergency_flag> 
emergency_flag: 
0  –  off (default if value is omitted) 
1  –  on 
Examples 
AT+CGDCONT? 
+CGDCONT: 1,"IPV4V6","","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0 
+CGDCONT: 2,"IPV6","ims","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0 
+CGDCONT: 3,"IPV4V6","","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,1   
OK 
AT+CGDCONT=? 
+CGDCONT: (1-24,100-179),"IP",,,(0-2),(0-4),(0-1),(0-1) 
+CGDCONT: (1-24,100-179),"PPP",,,(0-2),(0-4),(0-1),(0-1) 
+CGDCONT: (1-24,100-179),"IPV6",,,(0-2),(0-4),(0-1),(0-1) 
+CGDCONT: (1-24,100-179),"IPV4V6",,,(0-2),(0-4),(0-1),(0-1) 
OK 
9.5   AT+CGDSCONT    Define Secondary PDP Context 
Description   
The set command specifies PDP context parameter values for a Secondary PDP context identified 
by the (local) context identification parameter, <cid>. The number of PDP contexts that may be in a 
defined state at the same time is given by the range returned by the test command. A special form of 
the set command, AT
+CGDSCONT=<cid> causes the values for context number <cid> to become 
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undefined. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGDSCONT=? 
+CGDSCONT: (range of supported <cid>s),(list of <p_cid>s for 
active primary contexts), <PDP_type>, (list of supported 
<d_comp>s),(list of supported <h_comp>s) 
OK 
ERROR 
Read Command  Responses 
AT+CGDSCONT? +CGDSCONT: [<cid>,<p_cid>,<d_comp>,<h_comp> 
[<CR><LF>+CGDSCONT: <cid>,<p_cid>,<d_comp>,<h_comp> 
[...]]] 
OK 
ERROR 
Write Command 
Responses 
AT 
+CGDSCONT=<cid>[,<p_ci
d>[,<d_comp>[,<h_comp>]]
] 
OK 
ERROR 
Defined values 
<cid> 
a numeric parameter which specifies a particular PDP context definition. The parameter is local to 
the TE-MT interface and is used in other PDP context-related commands. The range of permitted 
values (minimum value = 1) is returned by the test form of the command. 
NOTE: The <cid>s for network-
initiated PDP contexts will have values outside the ranges 
indicated for the <cid> in the test form of the commands +CGDCONT and +CGDSCONT. 
<p_cid> 
a numeric parameter which specifies a particular PDP context definition which has been specified 
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by use of the +CGDCONT command. The parameter is local to the TE-MT interface. The list of 
permitted values is returned by the test form of the command. 
<PDP_type> 
(Packet Data Protocol type) a string parameter which specifies the type of packet data protocol. 
IP   Internet Protocol 
PPP   Point to Point Protocol 
IPV6  Internet Protocol Version 6 
IPV4V6    Dual PDN Stack 
<d_comp> 
a numeric parameter that controls PDP data compression (applicable for SNDCPonly) (refer 
3GPP TS 44.065 [61]) 
0    off 
1    on (manufacturer preferred compression) 
2     V.42bis 
Other values are reserved. 
<h_comp> 
a numeric parameter that controls PDP header compression (refer 3GPP TS 44.065 
[61] and 
3GPP TS 25.323 [62]) 
0    off 
1    on (manufacturer preferred compression) 
2     RFC1144 (applicable for SNDCP only) 
3     RFC2507 
4     RFC3095 (applicable for PDCP only) 
Other values are reserved. 
Examples 
AT+CGDSCONT? 
+CGDSCONT: 2,1,0,0 
OK 
AT+CGDSCONT=2,1 
OK
AT+CGDSCONT=? 
+CGDSCONT: (1-24,100-179),(4,5,6),"IP",(0-2),(0-4) 
+CGDSCONT: (1-24,100-179),(4,5,6),"PPP",(0-2),(0-4) 
+CGDSCONT: (1-24,100-179),(4,5,6),"IPV6",(0-2),(0-4) 
+CGDSCONT: (1-24,100-179),(4,5,6),"IPV4V6",(0-2),(0-4) 
OK 
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9.6   AT+CGTFT    Traffic Flow Template 
Description   
This command allows the TE to specify a Packet Filter - PF for a Traffic Flow Template - TFT that 
is used in the GGSN in UMTS/GPRS and Packet GW in EPS for routing of packets onto different 
QoS flows towards the TE. The concept is further described in the 3GPP TS 23.060 
[47]. A TFT 
consists of from one and up 
to 16 Packet Filters, each identified by a unique <packet filter 
identifier>. A Packet Filter also has an <evaluation precedence index> that is unique within all TFTs 
associated with all PDP contexts that are associated with the same PDP address. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CGTFT=? +CGTFT: <PDP_type>,(list of supported 
<packet filter 
identifier>s),(list of supported 
<evaluation precedence 
index>s),(list of supported 
<source address and subnet 
mask>s),(list of supported 
<protocol number (ipv4) / next header 
(ipv6)>s),(list of supported <destination port range>
s),(list of 
supported <source port range>s),(list of supported 
<ipsec security 
parameter index (spi)>s),(list of supported 
<type of service (tos) 
(ipv4) and mask / traffic class (ipv6) and mask>
s),(list of supported 
<flow label (ipv6)>s) 
[<CR><LF>+CGTFT: <PDP_type>,(list of supported <packet filter 
identifier>s),(list of supported 
<evaluation precedence 
index>s),(list of supported 
<source address and subnet 
mask>s),(list of supported 
<protocol number (ipv4) / next header 
(ipv6)>s),(list of supported <destination port range>
s),(list of 
supported <source port range>s),(list of supported 
<ipsec security 
parameter index (spi)>s),(list of supported <type of servic
e (tos) 
(ipv4) and mask / traffic class (ipv6) and mask>
s),(list of supported 
<flow label (ipv6)>s) 
[...]] 
OK 
ERROR 
Read Command  Responses 
AT+CGTFT? +CGTFT: [<cid>,<packet filter identifier>,
<evaluation precedence 
index>,<source address and subnet mask>,
<protocol number (ipv4) 
/ next header (ipv6)>,<destination port range>,
<source port 
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range>,<ipsec security parameter index (spi)>,<type of service (tos) 
(ipv4) and mask / traffic class (ipv6) and mask>,
<flow label 
(ipv6)> 
[<CR><LF>+CGTFT: <cid>,<packet  filter identifier>,<evaluation 
precedence index>,<source address and subnet mask>,
<protocol 
number (ipv4) / next header (ipv6)>,
<destination port 
range>,<source port range>,
<ipsec security parameter index 
(spi)>,<type of service (tos) (ipv4) and mask / tra
ffic class (ipv6) 
and mask>,<flow label (ipv6)> 
[...]]] 
OK 
ERROR 
Write Command  Responses 
AT+CGTFT=<cid>[,[<packe
t  filter 
identifier>,<evaluation 
precedence index>[,<source 
address and subnet 
mask>[,
<protocol number 
(ipv4) / next header 
(ipv6)>[,<desti
nation port 
range>[,
<source port 
range>[,
<ipsec security 
parameter index 
(spi)>[,
<type of service (tos) 
(ipv4) and mask / traffic 
class (ipv6) and 
mask>[,
<flow label 
(ipv6)>]]]]]]]]] 
OK 
ERROR 
Execute Command Responses 
AT+CGTFT 
OK 
ERROR 
Defined values 
<cid> 
a numeric parameter which specifies a particular PDP context definition (see theAT+CGDCONT 
and AT +CGDSCONT commands). 
<PDP_type> 
(Packet Data Protocol type) a string parameter which specifies the type of packet data protocol. 
IP   Internet Protocol 
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PPP   Point to Point Protocol 
IPV6  Internet Protocol Version 6 
IPV4V6    Dual PDN Stack 
<packet filter identifier> 
a numeric parameter, value range from 1 to 16. 
<evaluation precedence index> 
a numeric parameter. The value range is from 0 to 255. 
<source address and subnet mask> 
string type    The string is given as dot-separated numeric (0-255) parameters on the form: 
"a1.a2.a3.a4.m1.m2.m3.m4" for IPv4 or 
"a1.a2.a3.a4.a5.a6.a7.a8.a9.a10.a11.a12.a13.a14.a15.a16.m1.m2.m3.m4.m5.m6.m7.m8.m9.m10.m1
1.m12.m13.m14.m15.m16", for IPv6. 
<protocol number (ipv4) / next header (ipv6)> 
a numeric parameter, value range from 0 to 255. 
<destination port range> 
string type. The string is given as dot-separated numeric (0-65535) parameters on the form "f.t". 
<source port range> 
string type. The string is given as dot-separated numeric (0-65535) parameters on the form "f.t". 
<ipsec security parameter index (spi)> 
numeric value in hexadecimal format. The value range is from 00000000 to FFFFFFFF. 
<type of service (tos) (ipv4) and mask / traffic class (ipv6) and mask> 
string type. The string is given as dot-separated numeric (0-255) parameters on the form "t.m". 
<flow label (ipv6)> 
numeric value in hexadecimal format. The value range is from 00000 to FFFFF. Valid for IPv6 only. 
Examples 
AT+CGTFT? 
+CGTFT: 2,1,0,"74.125.71.99.255.255.255.255",0,0.0,0.0,0,0.0,0 
OK 
AT+CGTFT=2,1,0,"74.125.71.99.255.255.255.255" 
OK
AT+CGTFT=? 
+CGTFT: "IP",(1-2),(0-255),,(0-255),(0-65535.0-65535),(0-65535.0-65535),(0-FFFFF 
FFF),(0-255.0-255),(0-FFFFF) 
+CGTFT: "PPP",(1-2),(0-255),,(0-255),(0-65535.0-65535),(0-65535.0-65535),(0-FFFF 
FFFF),(0-255.0-255),(0-FFFFF) 
+CGTFT: "IPV6",(1-2),(0-255),,(0-255),(0-65535.0-65535),(0-65535.0-65535),(0-FFF 
FFFFF),(0-255.0-255),(0-FFFFF) 
+CGTFT:"IPV4V6",(1-16),(0-255),,(0-255),(0-65535.0-65535),(0-65535.0-65535),(0-FFFFFFFF)
,(0-255.0-255),(0-FFFFF) 
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OK 
9.7  AT+CGQREQ  Quality of service profile (requested) 
Description 
This command allows the TE to specify a Quality of Service Profile that is used when the MT sends 
an Activate PDP Context Request message to the network.. 
A special form of the set command 
(AT+CGQREQ=<cid>) causes the requested profile for context number <cid> 
to become 
undefined. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGQREQ=? +CGQREQ: <PDP_type>, (list of supported <precedence>s), (list 
of supported <delay>s), (list of supported <reliability>s) , (list of 
supported <peak>s), (list of supported <mean>s) [<CR><LF> 
+CGQREQ: <PDP_type>, (list of supported <precedence>s), (list 
of supported <delay>s), (list of supported <reliability>s) , (list of 
supported <peak>s), (list of supported <mean>s) 
[…]] 
OK 
ERROR 
Read Command  Responses 
AT+CGQREQ? 
+CGQREQ: [<cid>, <precedence >, <delay>, <reliability>, 
<peak>, <mean>[<CR><LF>   
+CGQREQ: <cid>, <precedence >, <delay>, <reliability.>, <peak>
, 
<mean>[…]]] 
OK 
ERROR 
Write Command  Responses 
AT+CGQREQ=<cid>[,<prec
edence>[,<delay>[,<reliabilit
y>[,<peak>[,<mean>]]]]] 
OK 
ERROR 
Execution Command Responses 
AT+CGQREQ OK 
ERROR 
Defined values 
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<cid> 
A numeric parameter which specifies a particular PDP context definition (see AT+CGDCONT 
command). The range is from 1 to 24,100 to 179 
<PDP_type> 
(Packet Data Protocol type) a string parameter which specifies the type of packet data protocol. 
IP   Internet Protocol 
PPP   Point to Point Protocol 
IPV6    Internet Protocol Version 6 
IPV4V6    Dual PDN Stack 
<precedence> 
A numeric parameter which specifies the precedence class: 
0  –  network subscribed value 
1  –  high priority 
2    –  normal priority 
3  –  low priority 
<delay> 
A numeric parameter which specifies the delay class: 
0  –  network subscribed value 
1  –  delay class 1 
2  –  delay class 2 
3  –  delay class 3 
4  –  delay class 4 
<reliability> 
A numeric parameter which specifies the reliability class: 
0  –  network subscribed value 
1  –  Non real-time traffic,error-sensitive application that cannot cope with data loss 
2  –  Non real-time traffic,error-sensitive application that can cope with infrequent data loss 
3  –  Non real-time traffic,error-sensitive application that can cope with data loss, GMM/- 
SM,and SMS 
4  –  Real-time traffic,error-sensitive application that can cope with data loss 
5  –  Real-time traffic error non-sensitive application that can cope with data loss 
<peak> 
A numeric parameter which specifies the peak throughput class: 
0  –  network subscribed value 
1  –  Up to 1000 (8 kbit/s) 
2  –  Up to 2000 (16 kbit/s) 
3  –  Up to 4000 (32 kbit/s) 
4  –  Up to 8000 (64 kbit/s) 
5  –  Up to 16000 (128 kbit/s) 
6  –  Up to 32000 (256 kbit/s) 
7  –  Up to 64000 (512 kbit/s) 
8  –  Up to 128000 (1024 kbit/s) 
9  –  Up to 256000 (2048 kbit/s) 
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<mean> 
A numeric parameter which specifies the mean throughput class: 
0   –  network subscribed value 
1   –  100 (~0.22 bit/s) 
2    –  200 (~0.44 bit/s) 
3   –  500 (~1.11 bit/s) 
4   –  1000 (~2.2 bit/s) 
5   –  2000 (~4.4 bit/s) 
6   –  5000 (~11.1 bit/s) 
7   –  10000 (~22 bit/s) 
8   –  20000 (~44 bit/s) 
9   –  50000 (~111 bit/s) 
10  –  100000 (~0.22 kbit/s) 
11  –  200000 (~0.44 kbit/s) 
12  –  500000 (~1.11 kbit/s) 
13  –  1000000 (~2.2 kbit/s) 
14  –  2000000 (~4.4 kbit/s) 
15  –  5000000 (~11.1 kbit/s) 
16  –  10000000 (~22 kbit/s) 
17  –  20000000 (~44 kbit/s) 
18  –  50000000 (~111 kbit/s) 
31  –  optimization 
Examples 
AT+CGQREQ? 
+CGQREQ: 
OK 
AT+CGQREQ=? 
+CGQREQ: "IP",(0-3),(0-4),(0-5),(0-9),(0-18,31) 
+CGQREQ: "PPP",(0-3),(0-4),(0-5),(0-9),(0-18,31) 
+CGQREQ: "IPV6",(0-3),(0-4),(0-5),(0-9),(0-18,31) 
+CGQREQ: "IPV4V6",(0-3),(0-4),(0-5),(0-9),(0-18,31) 
OK 
9.8  AT+CGEQREQ    3G quality of service profile (requested) 
Description 
The test command returns values supported as a compound value. 
The read command returns the current settings for each defined context for which a QOS was 
explicitly specified. 
The write command allows the TE to specify a Quality of Service Profile for the context identified 
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by the context identification parameter <cid> 
which is used when the MT sends an Activate PDP 
Context Request message to the network. 
A special form of the write command, AT+CGEQREQ=<cid> causes the requ
ested profile for 
context number <cid> to become undefined. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGEQREQ=? +CGEQREQ: <PDP_type>,(list of supported <Traffic class>
s),(list 
of supported <Maximum bitrate UL>s),(list of supported 
<Maximum bitrate DL>s),(list of supported 
<Guaranteed bitrate 
UL>s,(list of supported <Guaranteed bitrate DL>
s),(list of 
supported <Deliv ery order>s),(list of supported 
<Maximum SDU 
size>s),(list of supported <SDU error ratio>s),(list of supported
<Residual bit error Ratio>s),(list of supported 
<Delivery of 
erroneous SDUs>s),(list of Supported <Transfer delay>
s),(list of 
supported <Traffic handling priority>s),(list of supported  <Source 
statistics descriptor>s),(list of supported  <Signaling indicat
ion 
flag>s) 
OK 
ERROR 
Read Command  Responses 
AT+CGEQREQ? +CGEQREQ: [<cid>,<Traffic class>,<Maximum bitrate UL>, 
<Maximum bitrate DL>,<Guaranteed bitrate UL>,<Guaranteed 
bitrate DL>,<Delivery order>,<Maximum SDU size>,<SDU error 
ratio>,<Residual bit error ratio>,<Delivery of erroneous SDUs>, 
<Transfer Delay>,<Traffic handling priority>,<Source statistics 
descriptor>,< Signaling indication flag>][<CR><LF>+CGEQREQ: 
<cid>,<Traffic class>,<Maximum bitrate UL>,<Maximum bitrate 
DL>,<Guaranteed bitrate UL>,<Guaranteed bitrate DL>,<Delivery 
order>,<Maximum SDU size>,<SDU error ratio>,<Residual bit 
error ratio>,<Delivery of erroneous SDUs>,<Transfer Delay>, 
<Traffic handling priority>,<Source statistics descriptor>, 
<Signaling indication flag> […]] 
OK 
ERROR 
Write Command  Responses 
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AT+CGEQREQ=<cid>[,<Tr
affic class>[,<Maximum bit
rate UL>[,<Maximum bitrat
e DL>[,<Guaranteed bitrate
 UL>[,<Guaranteed bitrate 
DL>[,<Delivery order>[,<M
aximum SDU size>[,<SDU
 error ratio>[,<Residual bit
 error ratio>[,<Delivery of 
erroneous SDUs>[,<Transfe
r  delay>[,<Traffic handling
 priority>[,<Source statistic
s descriptor>[,<Signaling in
dication flag>]]]]]]]]]]]]]] 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command Responses 
AT+CGEQREQ 
OK 
ERROR 
Defined values 
<cid> 
Parameter specifies 
a particular PDP context definition.The parameter is also used in other PDP 
context-related commands. The range is from 1 to 24,100 to 179 
<Traffic class> 
0  –  conversational 
1  –  streaming 
2  –  interactive 
3  –  background 
4  –  subscribed value 
<Maximum bitrate UL> 
This parameter indicates the maximum number of kbits/s delivered to UMTS(up-link traffic)at a 
SAP. As an example a bitrate of 32kbit/s would be specified as 32(e.g. AT+CGEQREQ=…,32,…).   
The range is from 0 to 11520. The default value is 
0. If the parameter is set to '0' the subscribed 
value will be requested. 
<Maximum bitrate DL> 
This parameter indicates the maximum number of kbits/s delivered to UMTS(down-link traffic)at a 
SAP.As an example a bitrate of 32kbit/s would be specified as 32(e.g. AT+CGEQREQ=…,32,…).   
The range is from 0 to 42200
. The default value is 0. If the parameter is set to '0' the subscribed 
value will be requested. 
<Guaranteed bitrate UL> 
This parameter indicates the guaranteed number of kbit/s delivered to UMTS(up-link traffic)at a 
SAP(provided that there is data to deliver).As an example a bitrate of 32kbit/s would be specified as 
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32(e.g.AT+CGEQREQ=…,32,…). 
The range is from 0 to 11520
. The default value is 0. If the parameter is set to '0' the subscribed 
value will be requested. 
<Guaranteed bitrate DL> 
This parameter indicates the guaranteed number of kbit/s delivered to UMTS(down-link traffic)at a 
SAP(provided that there is data to deliver).As an example a bitrate of 32kbit/s would be specified as 
32(e.g.AT+C GE QREQ=…,32,…). 
The range is from 0 to 42200
. The default value is 0. If the parameter is set to '0' the subscribed 
value will be requested. 
<Delivery order> 
This parameter indicates whether the UMTS bearer shall provide in-sequence SDU delivery or not. 
0    –  no 
1   –  yes 
2   –  subscribed value 
<Maximum SDU size> 
This parameter indicates the maximum allowed SDU size in octets. 
The range is from 0 to 1520. The default value is 0. If the parameter is set to '0' the subscribed value 
will be requested. 
<SDU error ratio> 
This parameter indicates the target value for the fraction of SDUs lost or detected as erroneous.SDU 
error ratio is defined only for conforming traffic.As an example a target SDU error ratio of 5*10-3 
would be specified as “5E3”(e.g.AT+CGEQREQ=..,”5E3”,…). 
“0E0”  –  subscribed value 
“1E2” 
“7E3” 
“1E3” 
“1E4” 
“1E5” 
“1E6” 
“1E1” 
<Residual bit error ratio> 
This parameter indicates the target value for the undetected bit error ratio in the delivered SDUs. If 
no error detection is requested,Residual bit error ratio indicates the bit error ratio in the delivered 
SDUs.As an example a target residual bit error ratio of 5*10-3 would be specified as “5E3”(e.g. 
AT+CGEQREQ=…,”5E3”,..). 
    “0E0”  –  subscribed value 
“5E2”   
“1E2” 
“5E3” 
“4E3” 
“1E3” 
“1E4” 
“1E5” 
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“1E6” 
“6E8” 
<Delivery of erroneous SDUs> 
This parameter indicates whether SDUs detected as erroneous shall be delivered or not. 
0  –  no 
1  –  yes 
2  –  no detect 
3  –  subscribed value 
<Transfer delay> 
This parameter indicates the targeted time 
between request to transfer an SDU at one SAP to its 
delivery at the other SAP,in milliseconds. 
The range is 0 and from 100 
to 4000. The default value is 0. If the parameter is set to '0' the 
subscribed value will be requested. 
<Traffic handling priority> 
This parameter specifies the relative importance for handling of all SDUs belonging to the UMTS   
Bearer compared to the SDUs of the other bearers. 
The range is from 0 to 3. The default value is 0. If the parameter is set to '0' the subscribed value 
will be requested. 
<Source statistics descriptor> 
This parameter indicates profile parameter that Source statistics descriptor for requested UMTS 
QoS   
The range is from 0 to 1
. The default value is 0. If the parameter is set to '0' the subscribed value 
will be requested. 
<Signaling indication flag> 
This parameter indicates Signaling flag. 
The range is from 0 to 1 The default value is 0. If the parameter is set to '0' the subscribed value will 
be requested. 
<PDP_type> 
(Packet Data Protocol type) a string parameter which specifies the type of packet data protocol. 
IP   Internet Protocol 
PPP   Point to Point Protocol 
IPV6    Internet Protocol Version 6 
IPV4V6    Dual PDN Stack 
Examples 
AT+CGEQREQ? 
+CGEQREQ: 
OK 
AT+CGEQREQ=? 
+CGEQREQ: "IP",(0-4),(0-11520),(0-42200),(0-11520),(0-42200),(0-2),(0-1520),("0E0","1E 
1","1E2","7E3","1E3","1E4","1E5","1E6"),("0E0","5E2","1E2","5E3","4E3","1E3","1E 
4","1E5","1E6","6E8"),(0-3),(0,100-4000),(0-3) ,(0-1),(0-1) 
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+CGEQREQ: "PPP",(0-4),(0-11520),(0-42200),(0-11520),(0-42200),(0-2),(0-1520),("0E0","1 
E1","1E2","7E3","1E3","1E4","1E5","1E6"),("0E0","5E2","1E2","5E3","4E3","1E3","1 
E4","1E5","1E6","6E8"),(0-3),(0,100-4000),(0-3) ,(0-1),(0-1) 
+CGEQREQ: "IPV6",(0-4),(0-11520),(0-42200),(0-11520),(0-42200),(0-2),(0-1520),("0E0"," 
1E1","1E2","7E3","1E3","1E4","1E5","1E6"),("0E0","5E2","1E2","5E3","4E3","1E3"," 
1E4","1E5","1E6","6E8"),(0-3),(0,100-4000),(0-3) ,(0-1),(0-1) 
+CGEQREQ:"IPV4V6",(0-4),(0-11520),(0-42200),(0-11520),(0-42200),(0-2),(0-1520),("0E0","1E1
","1E2","7E3","1E3","1E4","1E5","1E6"),("0E0","5E2","1E2","5E3","4E3","1E3","1E4","1E5","1
E6","6E8"),(0-3),(0,100-4000),(0-3),(0-1),(0-1) 
OK 
9.9  AT+CGQMIN  Quality of service profile (minimum acceptable) 
Description 
This command allows the TE to specify a minimum acceptable profile which is checked by the MT 
against the negotiated profile returned in the Activate PDP Context Accept message.A special form 
of the set command,AT+C GQ M IN =<cid> 
causes the minimum acceptable profile for context 
number <cid> to become undefined. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGQMIN=? +CGQMIN: <PDP_type>, (list of supported <precedence>s), (list 
of supported <delay>s), (list of supported <reliability>s) , (list of 
supported <peak>s), (list of supported <mean>s) [<CR><LF> 
+CGQMIN: <PDP_type>, (list of supported <precedence>s), (list 
of supported <delay>s), (list of supported <reliability>s) , (list of 
supported <peak>s), (list of supported <mean>s)[…]] 
OK 
ERROR 
Read Command  Responses 
AT+CGQMIN? +CGQMIN: [<cid>, <precedence >, <delay>, <reliability>, 
<peak>, <mean>[<CR><LF> 
+CGQMIN: <cid>, <precedence >, <delay>, <reliability.>, <peak>, 
<mean> 
[…]]] 
OK 
ERROR 
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Write Command 
Responses 
AT+CGQMIN=<cid>[,<prec
edence>[,<delay>[,<reliabilit
y>[,<peak> [,<mean>]]]]] 
OK 
ERROR 
Execution Command Responses 
AT+CGQMIN OK 
ERROR 
Defined values 
<cid> 
A  numeric parameter which specifies a particular PDP context definition (see AT +CGDCONT 
command). The range is from 1 to 24,100 to 179. 
<PDP_type> 
(Packet Data Protocol type) a string parameter which specifies the type of packet data protocol. 
IP   Internet Protocol 
PPP   Point to Point Protocol 
IPV6  Internet Protocol Version 6 
IPV4V6    Dual PDN Stack 
<precedence> 
A numeric parameter which specifies the precedence class: 
0  –    network subscribed value 
1  –  high priority 
2  –  normal priority 
3  –  low priority 
<delay> 
A numeric parameter which specifies the delay class: 
0  –  network subscribed value 
1  –  delay class 1 
2  –  delay class 2 
3  –  delay class 3 
4  –  delay class 4 
<reliability> 
A numeric parameter which specifies the reliability class: 
0  –  network subscribed value 
1  –  Non real-time traffic,error-sensitive application that cannot cope with data loss   
2  –  Non real-time traffic,error-sensitive application that can cope with infrequent data loss 
3  –  Non real-time traffic,error-sensitive application that can cope with data loss, GMM/- 
SM,and SMS 
4  –  Real-time traffic,error-sensitive application that can cope with data loss 
5  –  Real-time traffic error non-sensitive application that can cope with data loss 
<peak> 
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A numeric parameter which specifies the peak throughput class: 
0  –  network subscribed value 
1  –  Up to 1000 (8 kbit/s) 
2  –  Up to 2000 (16 kbit/s) 
3  –  Up to 4000 (32 kbit/s) 
4  –  Up to 8000 (64 kbit/s) 
5  –  Up to 16000 (128 kbit/s) 
6  –  Up to 32000 (256 kbit/s) 
7  –  Up to 64000 (512 kbit/s) 
8  –  Up to 128000 (1024 kbit/s) 
9  –  Up to 256000 (2048 kbit/s) 
<mean> 
A numeric parameter which specifies the mean throughput class: 
0   –  network subscribed value 
1   –  100 (~0.22 bit/s) 
2   –  200 (~0.44 bit/s) 
3   –  500 (~1.11 bit/s) 
4   –  1000 (~2.2 bit/s) 
5   –  2000 (~4.4 bit/s) 
6   –  5000 (~11.1 bit/s) 
7   –  10000 (~22 bit/s) 
8   –  20000 (~44 bit/s) 
9   –  50000 (~111 bit/s) 
10  –  100000 (~0.22 kbit/s) 
11  –  200000 (~0.44 kbit/s) 
12  –  500000 (~1.11 kbit/s) 
13  –  1000000 (~2.2 kbit/s) 
14  –  2000000 (~4.4 kbit/s) 
15  –  5000000 (~11.1 kbit/s) 
16  –  10000000 (~22 kbit/s) 
17  –  20000000 (~44 kbit/s) 
18  –  50000000 (~111 kbit/s) 
31  –  optimization 
Examples 
AT+CGQMIN? 
+CGQMIN: 
OK 
AT+CGQMIN=? 
+CGQMIN: "IP",(0-3),(0-4),(0-5),(0-9),(0-18,31) 
+CGQMIN: "PPP",(0-3),(0-4),(0-5),(0-9),(0-18,31) 
+CGQMIN: "IPV6",(0-3),(0-4),(0-5),(0-9),(0-18,31) 
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+CGQMIN: "IPV4V6",(0-3),(0-4),(0-5),(0-9),(0-18,31) 
OK 
9.10  AT+CGEQMIN  3G quality of service profile (minimum acceptable) 
Description 
The test command returns values supported as a compound value. 
The read command returns the current settings for each defined context for which a QOS was 
explicitly specified. 
The write command allow the TE to specify a Quallity of Service Profile for the context identified 
by the context identification parameter <cid> 
which is checked by the MT against the negotiated 
profile returned in the Activate/Modify PDP Context Accept message. 
A special form of the write command, AT+CGEQMIN=<cid> 
causes the requested for context 
number <cid> to become undefined. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CGEQMIN=? 
+CGEQMIN: <PDP_type>,(list of supported <Traffic class>s),(list 
of supported <Maximum bitrate UL>
s),(list of supported 
<Maximum bitrate DL>s),(list of supported 
<Guaranteed bitrate 
UL>s,(list of supported <Guaranteed bitrate DL>
s),(list of 
supported <Deliv ery order>s),(list of supported 
<Maximum SDU 
size>s),(list of supported <SDU error ratio>
s),(list of supported 
<Residual bit error  Ratio>s),(list of supported 
<Delivery of 
erroneous SDUs>s),(list of Supported  <Transfer delay>
s),(list of 
supported <Traffic handling priority>s),(list of supported  <Source 
statistics descriptor>s),(list of supported  <
Signaling indication 
flag>s) 
OK 
ERROR 
Read Command  Responses 
AT+CGEQMIN?  +CGEQMIN: [<cid>,<Traffic class>,<Maximum bitrate UL>, 
<Maximum bitrate DL>,<Guaranteed bitrate UL>,<Guaranteed 
bitrate DL>,<Delivery order>,<Maximum SDU size>,<SDU error 
ratio>,<Residual bit error ratio>,<Delivery of erroneous SDUs>, 
<Transfer Delay>,<Traffic handling priority>,<Source statistics 
descriptor>,< Signaling indication flag>][<CR><LF>+CGEQMIN: 
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<cid>,<Traffic class>,<Maximum bitrate UL>,<Maximum bitrate 
DL>,<Guaranteed bitrate UL>,<Guaranteed bitrate DL>,<Delivery 
order>,<Maximum SDU size>,<SDU error ratio>,<Residual bit 
error ratio>,<Delivery of erroneous SDUs>,<Transfer Delay>, 
<Traffic handling priority>,<Source statistics descriptor>, 
<Signaling indication flag>[…]] 
OK 
ERROR 
Write Command  Responses 
AT+CGEQMIN=<cid>[,<Tr
affic class>[,<Maximum bit
rate UL>[,<Maximum bitrat
e DL>[,<Guaranteed bitrate
 UL>[,<Guaranteed bitrate 
DL>[,<Delivery order>[,<M
aximum  SDU size>[,<SDU
 error ratio>[,<Residual bit
 error ratio>[,<Delivery of 
erroneous SDUs>[,<Transfe
r  delay>[,<Traffic handling
 priority>[,<Source statistic
s descriptor>[,<Signaling in
dication flag>]]]]]]]]]]]]]] 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command Responses 
AT+CGEQMIN 
OK 
ERROR 
Defined values 
<cid> 
Parameter specifies a particular PDP context definition.The parameter is also used in other PDP 
context-related commands. The range is from 1 to 24,100 to 179. 
<Traffic class> 
0  –  conversational 
1  –  streaming 
2  –  interactive 
3  –  background 
4  –  subscribed value 
<Maximum bitrate UL> 
This parameter indicates the maximum number of kbits/s delivered to UMTS(up-link traffic)at a 
SAP.As an example a bitrate of 32kbit/s would be specified as 32(e.g. AT+CGEQMIN=…,32,…).   
The range is from 0 to 11520. The default value is 0. 
If the parameter is set to '0' the subscribed 
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value will be requested. 
<Maximum bitrate DL> 
This parameter indicates the maximum number of kbits/s delivered to UMTS(down-link traffic)at a 
SAP.As an example a bitrate of 32kbit/s would be specified as 32(e.g. AT+CGEQMIN=…,32,…).   
The range is from 0 to 42200. The default value is 0. If the parameter is set to '0' the subscribed 
value will be requested. 
<Guaranteed bitrate UL> 
This parameter indicates the guaranteed number of kbit/s delivered to UMTS(up-link traffic)at a 
SAP(provided that there is data to deliver).As an example a bitrate of 32kbit/s would be specified as 
32(e.g.AT+CGEQMIN=…,32,…). 
The range is from 0 to 11520. The default value is 0. 
If the parameter is set to '0' the subscribed 
value will be requested. 
<Guaranteed bitrate DL> 
This parameter indicates the guaranteed number of kbit/s delivered to UMTS(down-link traffic)at a 
SAP(provided that there is data to deliver).As an example a bitrate of 32kbit/s would be specified as 
32(e.g.AT+CGEQMIN=…,32,…). 
The range is from 0 to 42200. The default value is 0. If the parameter is set to '0' the subscribed 
value will be requested. 
<Delivery order> 
This parameter indicates whether the UMTS bearer shall provide in-sequence SDU delivery or not. 
0  –  no 
1  –  yes 
2  –  subscribed value 
<Maximum SDU size> 
This parameter indicates the maximum allowed SDU size inoctets. 
The range is from 0 to 1520. The default value is 0. If the parameter is set to '0' the subscribed value 
will be requested. 
<SDU error ratio> 
This parameter indicates the target value for the fraction of SDUs lost or detected as erroneous.SDU 
error ratio is defined only for conforming traffic.As an example a target SDU error ratio of 5*10-3 
would be specified as “5E3”(e.g.AT+CGEQMIN=..,”5E3”,…). 
“0E0”  –  subscribed value 
“1E2” 
“7E3” 
“1E3” 
“1E4” 
“1E5” 
“1E6” 
“1E1” 
<Residual bit error ratio> 
This parameter indicates the target value for the undetected bit error ratio in the delivered SDUs. If 
no error detection is requested,Residual bit error ratio indicates the bit error ratio in the delivered 
SDUs.As an example a target residual bit error ratio of 5*10-3 would be specified as “5E3”(e.g. 
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AT+CGEQMIN=…,”5E3”,..). 
    “0E0”    –  subscribed value 
   “5E2”   
“1E2” 
“5E3” 
“4E3” 
“1E3” 
“1E4” 
“1E5” 
“1E6” 
“6E8” 
<Delivery of erroneous SDUs> 
This parameter indicates whether SDUs detected as erroneous shall be delivered or not. 
0  –  no 
1  –  yes 
2  –  no detect 
3  –  subscribed value 
<Transfer delay> 
This parameter indicates the targeted time between request to transfer an SDU at one SAP to its 
delivery at the other SAP,in milliseconds. 
The range is 0 and from 100 to 4000. The default value is 0. If the parameter is set to '0' the 
subscribed value will be requested. 
<Traffic handling priority> 
This parameter specifies the relative importance for handling of all SDUs belonging to the UMTS   
Bearer compared to the SDUs of the other bearers. 
The range is from 0 to 3. The default value is 0. 
If the parameter is set to '0' the subscribed value 
will be requested. 
<Source statistics descriptor> 
This parameter indicates profile parameter that Source statistics descriptor for requested UMTS 
QoS   
The range is from 0 to 1. The 
default value is 0. If the parameter is set to '0' the subscribed value 
will be requested. 
<Signaling indication flag> 
This parameter indicates Signaling flag. 
The range is from 0 to 1 The default value is 0. If the parameter is set to '0' the subscribed value will 
be requested. 
<PDP_type> 
(Packet Data Protocol type) a string parameter which specifies the type of packet data protocol. 
IP   Internet Protocol 
PPP   Point to Point Protocol 
IPV6  Internet Protocol Version 6 
IPV4V6    Dual PDN Stack 
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Examples 
AT+CGEQMIN? 
+CGEQMIN: 
OK 
AT+CGEQMIN=? 
+CGEQMIN: "IP",(0-4),(0-11520),(0-42200),(0-115200),(0-42200),(0-2),(0-1520),("0E0","1E 
1","1E2","7E3","1E3","1E4","1E5","1E6"),("0E0","5E2","1E2","5E3","4E3","1E3","1E 
4","1E5","1E6","6E8"),(0-3),(0,100-4000),(0-3) ,(0-1),(0-1) 
+CGEQMIN: "PPP",(0-4),(0-11520),(0-42200),(0-115200),(0-42200),(0-2),(0-1520),("0E0","1 
E1","1E2","7E3","1E3","1E4","1E5","1E6"),("0E0","5E2","1E2","5E3","4E3","1E3","1 
E4","1E5","1E6","6E8"),(0-3),(0,100-4000),(0-3) ,(0-1),(0-1) 
+CGEQMIN: "IPV6",(0-4),(0-11520),(0-42200),(0-115200),(0-42200),(0-2),(0-1520),("0E0"," 
1E1","1E2","7E3","1E3","1E4","1E5","1E6"),("0E0","5E2","1E2","5E3","4E3","1E3"," 
1E4","1E5","1E6","6E8"),(0-3),(0,100-4000),(0-3) ,(0-1),(0-1) 
+CGEQMIN:"IPV4V6",(0-4),(0-11520),(0-42200),(0-115200),(0-42200),(0-2),(0-1520),("0E0","1E
1","1E2","7E3","1E3","1E4","1E5","1E6"),("0E0","5E2","1E2","5E3","4E3","1E3","1E4","1E5","
1E6","6E8"),(0-3),(0,100-4000),(0-3),(0-1),(0-1) 
OK 
9.11  AT+CGDATA   Enter data state 
Description 
The command causes 
the MT to perform whatever actions are necessary to establish 
communication between the TE and the network using one or more Packet Domain PDP types. This 
may include performing a PS attach and one or more PDP context activations. The command is not 
used in CDMA/EVDO mode. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CGDATA=?  +CGDATA: (list of supported <L2P>s) 
OK 
ERROR 
Write Command  Responses 
AT+CGDATA=[<L2P>,[<ci
d>]] 
CONNECT [<text>] 
NO CARRIER 
OK 
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ERROR 
+CME ERROR: <err> 
Defined values 
<L2P> 
A string parameter that indicates the layer 2 protocol to be used between the TE and MT. 
PPP   Point-to-point protocol for a PDP such as IP 
<text> 
CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command. 
<cid> 
A  numeric parameter which specifies a particular PDP context definition (see AT +CGDCONT 
command). 
1…24,100…179 
Examples 
AT+CGDATA=? 
+CGDATA: ("PPP") 
OK 
AT+CGDATA="PPP",1 
CONNECT 115200 
9.12  AT+CGPADDR   Show PDP address 
Description 
The write command returns a list of PDP addresses for the specified context identifiers. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGPADDR=? [+CGPADDR: (list of defined <cid>s)] 
OK 
ERROR 
Write Command  Responses 
AT+CGPADDR= 
<cid>[,<cid>[,…]] 
[+CGPADDR:<cid>,<PDP_addr>[<CR><LF> 
+CGPADDR: <cid>,<PDP_addr>[...]]] 
OK 
SIM card supports IPV4V6 type 
and the PDP_type of the command 
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“at+cgdcont” defined  is  ipv4v6 : 
[+CGPADDR: <cid>,<PDP_addr_IPV4>,<PDP_addr_IPV6>] 
+CGPADDR: <cid>,<PDP_addr_IPV4>,<PDP_addr_IPV6> [...]]] 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command
 Responses 
AT+CGPADDR [+CGPADDR: <cid>,<PDP_addr>] 
+CGPADDR: <cid>,<PDP_addr>[...]]] 
OK 
SIM card supports IPV4V6 type 
and the PDP_type of the command 
“at+cgdcont” defined  is  ipv4v6 : 
[+CGPADDR: <cid>,<PDP_addr_IPV4>,<PDP_addr_IPV6>] 
+CGPADDR: <cid>,<PDP_addr_IPV4>,<PDP_addr_IPV6> [...]]] 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<cid> 
A  numeric parameter which specifies a particular PDP context definition (see AT +CGDCONT 
command). If no <cid> is specified, the addresses for all defined contexts are returned. 
1…24,100…179 
<PDP_addr> 
A string that identifies the MT in the address space applicable to the PDP. The address may be static 
or dynamic. For a static address, it will be the one set by the AT +CGDCONT command when the 
context was defined. For a dynamic address it will be the one assigned during the last PDP context 
activation that used the context definition referred to by <cid>. <PDP_addr> is omitted if none is 
available. 
<PDP_addr_IPV4> 
A string parameter that identifies the MT in the address space applicable to the PDP.   
<PDP_addr_IPV6> 
A  string parameter that identifies the MT in the address space applicable to the PDP 
when the 
sim_card supports ipv6. The pdp type    must be set to “ipv6” or “ipv4v6” by the AT +CGDCONT 
command. 
Examples 
AT+CGPADDR =? 
+CGPADDR: (1) 
OK 
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AT+CGPADDR=1 
+CGDCONT: 1,"IPV4V6","","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0 
OK 
AT+CGPADDR 
+CGPADDR: 1,10.195.1.140,36.9.136.148.128.48.134.218.173.205.47.44.88.174.123.200 
+CGPADDR: 2,10.195.34.92,36.9.136.148.128.48.146.115.92.140.135.230.248.131.5.90 
+CGPADDR: 3,0.0.0.0,0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0 
OK 
9.13  AT+CGCLASS    GPRS mobile station class 
Description 
This command is used to set the MT to operate according to the specified GPRS mobile class. 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
Test Command 
Responses 
AT+CGCLASS=? +CGCLASS: (list of supported <class>s) 
OK 
ERROR 
Read Command  Responses 
AT+ CGCLASS? 
+CGCLASS: <class> 
OK 
ERROR 
Write Command  Responses 
AT+ CGCLASS=<class> 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command Responses 
AT+CGCLASS 
Set default value: 
OK 
ERROR 
Defined values 
<class> 
A string parameter which indicates the GPRS mobile class (in descending order of functionality) 
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A  –  class A (highest) 
Examples 
AT+CGCLASS=? 
+CGCLASS: ("A") 
OK 
AT+CGCLASS? 
+CGCLASS: "A" 
OK 
9.14  AT+CGEREP    GPRS event reporting 
Description 
The write command enables or disables sending of unsolicited result codes, “+CGEV” from MT to 
TE in the case of certain events occurring in the Packet Domain MT or the network.  <mode> 
controls the processing of    unsolicited result codes specified within this command. <bfr> controls 
the effect on buffered codes when <mode> 1 or 2 is entered. If a setting is not supported by the MT, 
ERROR or +CME ERROR: is returned. 
Read command returns the current <mode> and buffer settings. 
Test command returns the modes and buffer settings supported by the MT as compound values. 
SIM PIN References 
YES 3GPP TS 27.007 
Syntax 
Test Command  Responses 
AT+CGEREP=?  +CGEREP: (list of supported <mode>s),(list of supported <bfr>s) 
OK 
ERROR 
Read Command 
Responses 
AT+CGEREP?  +CGEREP: <mode>,<bfr> 
OK 
ERROR 
Write Command  Responses 
AT+CGEREP= 
<mode>[,<bfr>] 
OK 
ERROR 
+CME ERROR: <err> 
Execution Command Responses 
AT+CGEREP OK 
ERROR 
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Defined values 
<mode> 
0  –  
buffer unsolicited result codes in the MT; if MT result code buffer is full, the oldest 
ones can be discarded. No codes are forwarded to the TE. 
1  –  discard unsolicited result codes when MT-TE link is reserved (e.g. in on-
line data 
mode); otherwise forward them directly to the TE. 
2  –  buffer unsolicited result codes in the MT when MT-TE link is reserved (e.g. in on-line 
data mode) and flush them to the TE when MT-TE link becomes available; otherwise 
forward them directly to the TE. 
<bfr> 
0  –  
MT buffer of unsolicited result codes defined within this command is cleared when 
<mode> 1 or 2 is entered. 
1  –  MT buffer of unsolicited result codes defined within this command is flushed to the TE 
when <mode> 1 or 2 is entered (OK response shall be given before flushing the codes). 
The following unsolicited result codes and the corresponding events are defined: 
+CGEV: REJECT <PDP_type>, <PDP_addr> 
A networ
k request for PDP context activation occurred when the MT was unable to 
report it to the TE with a +CRING unsolicited result code and was automatically 
rejected. 
+CGEV: NW REACT    <PDP_type>, <PDP_addr>, [<cid>] 
The network has requested a context reactivation. The <cid> that was used to reactivate 
the context is provided if known to the MT. 
+CGEV: NW DEACT   <PDP_type>, <PDP_addr>, [<cid>] 
The network has forced a context deactivation. The <cid> that was used to activate the 
context is provided if known to the MT. 
+CGEV: ME DEACT    <PDP_type>, <PDP_addr>, [<cid>] 
The mobile equipment has forced a context deactivation. The <cid> that was used to 
activate the context is provided if known to the MT. 
+CGEV: NW DETACH 
The network has forced a Packet Domain detach. This implies that all active contexts 
have been deactivated. These are not reported separately. 
+CGEV: ME DETACH 
The mobile equipment has forced a Packet Domain detach. This implies that all active 
contexts have been deactivated. These are not reported separately. 
+CGEV: NW CLASS <class> 
The network has forced a change of MS class. The highest available class is reported 
(see AT +CGCLASS). 
+CGEV: ME CLASS <class> 
The mobile equipment has forced a change of MS class. The highest available class is 
reported (see AT +CGCLASS). 
Examples 
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AT+CGEREP=? 
+CGEREP: (0-2),(0-1) 
OK 
AT+CGEREP? 
+CGEREP: 0,0 
OK 
9.15  AT+CGAUTH    Set type of authentication for PDP-IP connections of 
GPRS 
Description   
This command is used to set type of authentication for PDP-IP connections of GPRS. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+CGAUTH=? 
+
CGAUTH
:, ,
127 ,127
(for CDMA1x-EvDo only) 
+CGAUTH:(range of supported <cid>s),(list of supported <auth_-
type> s),127,127 
(NOTE: the first line of the response is for CDMA 1x an
d Evdo 
only) 
OK 
ERROR 
+CME ERROR: <err> 
Read Command 
Responses 
AT+CGAUTH? +CGAUTH: ,,"user ","passwd"(for CDMA1x-EvDo only) 
+CGAUTH:[ <cid>,<auth_type>[,<user>,<passwd>]]<CR><LF> 
… 
OK 
ERROR 
+CME ERROR: <err> 
Write Command  Responses 
AT+CGAUTH=<cid>[,<aut
h_type>[,<passwd>[,<user>]
]] 
OK 
ERROR 
AT+CGAUTH=,,<user>,<pa
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sswd>  (for 
CDMA1x-EvDo) 
+CME ERROR: <err> 
Execution Command Responses 
AT+CGAUTH 
OK 
ERROR 
+CME ERROR: <err> 
Defined values 
<cid> 
Parameter specifies a particular PDP context definition. This is also used in other PDP 
context-related commands. 
1…24,100…179 
<auth_type> 
Indicate the type of authentication to be used for the specified context. If CHAP is selected another 
parameter <passwd> needs to be specified. If PAP is selected two additional parameters <passwd> 
and <user> need to specified. 
0  –  none 
1  –  PAP 
2  –  CHAP 
3  –  PAP or CHAP 
<passwd> 
Parameter specifies the password used for authentication.   
<user> 
Parameter specifies the user name used for authentication. 
Examples 
AT+CGAUTH=? 
+CGAUTH: ,,127,127(for CDMA1x-EvDo only) 
+CGAUTH: (1-24,100-179),(0-3),127,127 
OK 
AT+CGAUTH=1,1,”123”,”SIMCOM” 
OK 
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10  Hardware Related Commands 
10.1  AT+CVALARM    Low and high voltage Alarm 
Description 
This command is used to open or close the low voltage alarm function. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CVALARM=? +CVALARM: (list of supported <enable>s), (list of supported <
<low voltage>s), (list of supported high < high voltage>s) 
OK 
Read Command 
Responses 
AT+CVALARM? +CVALARM: <enable>,<low voltage>, <high voltage> 
OK 
Write Command  Responses 
AT+CVALARM=<enable>[,<l
ow voltage>],[<high voltage>] 
OK 
ERROR 
Defined values 
<enable> 
0  –  Close 
1  –  Open. If voltage < < low voltage>, it will report “UNDER-VOLTAGE WARNNING” 
every  10s. If voltage > <high voltage>, it will report  “OVER-VOLTAGE 
WARNNING” every 10s. 
<low voltage> 
Between 3300mV and 4000mV. Default value is 3300. 
<high voltage> 
Between 4000mV and 4300mV. Default value is 4300. 
NOTE
:
The three parameters will be saved automatically.   
Examples 
AT+CVALARM=1,3400,4300 
OK 
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AT+CVALARM? 
+CVALARM: 1,3400,4300 
OK 
AT+CVALARM=? 
+CVALARM: (0,1),(3300-4000),(4000-4300) 
OK 
10.2  AT+CVAUXS    Set state of the pin named VREG_AUX1 
Description 
This command is used to set state of the pin which is named VREG_AUX1. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CVAUXS=?  +CVAUXS: (list of supported <state>s) 
OK 
Read Command  Responses 
AT+CVAUXS? +CVAUXS: <state> 
OK 
Write Command 
Responses 
AT+CVAUXS=<state> OK 
ERROR 
Defined values 
<state> 
0  –  the pin is closed. 
1  –  the pin is opend(namely, open the pin) 
Examples 
AT+CVAUXS=1 
OK 
AT+CVAUXS? 
+CVAUXS: 1 
OK 
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10.3  AT+CVAUXV    Set voltage value of the pin named VREG_AUX1 
Description 
This command is used to set the voltage value of the pin which is named VREG_AUX1. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CVAUXV=? +CVAUXV: (list of supported <voltage>s) 
OK 
Read Command  Responses 
AT+ CVAUXV?  +CVAUXV: <voltage> 
OK 
Write Command 
Responses 
AT+CVAUXV=<voltage> OK 
ERROR 
Defined values 
<voltage> 
Voltage value of the pin which is named VREG_AUX1. The unit is in mV. And the value must the 
multiple of 50mv. 
Examples 
AT+CVAUXV=? 
+CVAUXV: (1700-3050) 
OK 
AT+CVAUXV=2800 
OK 
AT+CVAUXV? 
+CVAUXV: 2800 
OK 
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10.4  AT+CADC    Read ADC value 
Description 
This command is used to read the ADC value from modem. 
ME supports 2 types of ADC, which 
are raw type and voltage type. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CADC=? +CADC: (range of supported <adc>s) 
OK 
Write Command 
Responses 
AT+CADC=<adc> +CADC: <value> 
OK 
ERROR 
Defined values 
<adc> 
ADC type: 
0  –  raw type. 
2  –  voltage type(mv) 
<value> 
Integer type value of the ADC. 
Examples 
AT+CADC=? 
+CADC: (0,2) 
OK 
AT+CADC=0 
+CADC: 187 
OK 
10.5  AT+CADC2  Read ADC2 value 
Description 
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This command is used to read the ADC2 value from modem. ME supports 2 types of ADC, which 
are raw type and voltage type. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CADC2=? +CADC2: (range of supported <adc>s) 
OK 
Write Command 
Responses 
AT+CADC2=<adc> +CADC2: <value> 
OK 
ERROR 
Defined values 
<adc> 
ADC2 type: 
0  –  raw type. 
2  –  voltage type(mv) 
<value>
Integer type value of the ADC2. 
Examples 
AT+CADC2=? 
+CADC2: (0,2) 
OK 
AT+CADC2=0 
+CADC2: 187 
OK 
10.6  AT+CMTE  Control the module whether power shutdown when 
the module’s temperature upon the critical temperature 
Description 
This command is used to control the module whether power shutdown when the module’s 
temperature upon the critical temperature 
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SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CMTE=? +CMTE: (list of supported<on/off>s) 
OK 
Read Command 
Responses 
AT+CMTE? +CMTE: <on/off >   
OK 
Write Command  Responses 
AT+CMTE=<on/off >
OK 
ERROR 
Defined values 
<on/off> 
0  –  Disable temperature detection 
1  –  Enable temperature detection 
Examples 
AT+CMTE? 
+CMTE: 1 
OK 
AT+CMTE=1 
OK 
AT+CMTE=? 
+CMTE: 1 
OK 
NOTE:   
- When temperature is extreme high or low, product will power off. 
- URCs indicating the alert level “+CMTE:-1” or “+CMTE:1” are intended to enable the user 
to take appropriate   
precaution, such as protect the module from exposure to extreme conditions, or save or back 
up data etc. 
- Level “+CMTE:-2”or “+CMTE:2” URCs are followed by immediate shutdown. 
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10.7  AT+CPMVT    Low and high voltage Power Off 
Description 
This command is used to open or close the low and high voltage power off function. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CPMVT=? +CPMVT: (list of supported <enable>s), (list of supported < low 
voltage>s), (list of supported < high voltage>s) 
OK 
Read Command 
Responses 
AT+CPMVT? +CPMVT: <enable>,<low voltage>, <high voltage> 
OK 
Write Command  Responses 
AT+CPMVT=<enable>[,<low 
voltage>],[<high voltage>] 
OK 
ERROR 
Defined values 
<enable> 
0  –  Close 
1  –  Open. If voltage < < low voltage>, it will report “UNDER-
VOLTAGE WARNNING 
POWER DOWN” and power off the module. If voltage > <high voltage>, it will report 
“OVER-VOLTAGE WARNNING POWER DOWN” and power off the module 
<low voltage> 
Between 3200mV and 4000mV. Default value is 3200. 
<high voltage> 
Between 4000mV and 4300mV. Default value is 4300. 
NOTE
:
The three parameters will be saved automatically.   
Examples 
AT+CPMVT=1,3400,4300 
OK 
AT+CPMVT? 
+CPMVT: 1,3400,4300 
OK 
AT+CPMVT=? 
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+CPMVT: (0-1),(3200-4000),(4000-4300) 
OK 
10.8  AT+CDELTA    Set the module go to recovery mode 
Description 
This command is used to set the module go to recovery mode. 
SIM PIN References 
NO 
Vendor 
Syntax 
Write Command  Responses 
AT+CDELTA OK 
ERROR 
Defined values 
NOTE
:the command will write flag to the module and reboot the module, then the module will 
reboot and read the flag and enter recovery mode to update the firmware. 
Examples 
AT+CDELTA 
OK 
10.9  AT+CRIIC    Read values from register of IIC device 
Description   
This command is used to read values from register of IIC device. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
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AT+CRIIC=? OK 
Write Command  Responses 
AT+CRIIC= 
<addr>,<reg>,<len> 
+CRIIC: <data> 
OK 
ERROR 
Defined values 
<addr> 
Device address. Input format must be hex, such as 0xFF. 
<reg> 
Register address. Input format must be hex, such as 0xFF. 
<len> 
Read length. Range:1-4; unit:byte. 
<data> 
Data read. Input format must be hex, such as 0xFF. 
Examples   
AT+CRIIC=0x34, 0x02, 2 
+CRIIC: 0x01,0x5d 
OK 
10.10  AT+CWIIC    Write values to register of IIC device 
Description 
This command is used to write values to register of IIC device. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CWIIC=? OK 
Write Command 
Responses 
AT+CWIIC= 
<addr>,<reg>,<data>,<len> 
OK 
ERROR 
Defined values 
<addr> 
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Device address. Input format must be hex, such as 0xFF. 
<reg> 
Register address. Input format must be hex, such as 0xFF. 
<len> 
Read length. Range: 1-4; unit: byte. 
<data> 
Data written. Input format must be hex, such as 0xFF – 0xFFFFFFFF. 
Examples 
AT+CWIIC=0x34, 0x03, 0x5d, 1 
OK 
10.11  AT+CBC    Read the voltage value of the power supply 
Description 
This command is used to read the voltage value of the power supply 
SIM PIN References 
NO 
Vendor 
Syntax 
Read Command  Responses 
AT+CBC +CBC: <vol> 
OK 
ERROR 
Defined values 
<vol> 
The voltage value, such as 3.8. 
Examples 
AT+CBC 
+CBC: 3.591V 
OK 
10.12  AT+CPMUTEMP    Read the temperature of the module 
Description 
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This command is used to read the temperature of the module 
SIM PIN References 
NO  Vendor 
Syntax 
Read Command  Responses 
AT+CPMUTEMP  + CPMUTEMP: <temp> 
OK 
ERROR 
Defined values 
<temp> 
The Temperature value, such as 29. 
Examples 
AT+CPMUTEMP 
+CPMUTEMP: 29 
OK 
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11  AT Commands for SIM Application Toolkit 
11.1   AT+STIN    SAT Indication 
Description   
Every time the SIM Application issues a Proactive Command, via the ME, the TA will receive an 
indication. This indicates the type of Proactive Command issued. 
AT+STGI must then be used by the TA to request the parameters of the Proactive Command from 
the ME. Upon receiving the +STGI response from the ME, the TA must send AT+STGR to confirm 
the execution of the Proactive Command and provide any required user response, e.g. a selected 
menu item. 
SIM PIN References 
YES Vendor 
Syntax 
Test Command  Responses 
AT+STIN=? 
OK 
Read Command 
Responses 
AT+STIN?  +STIN: <cmd_id> 
OK 
Unsolicited Result Codes 
+STIN: <cmd_id> 
Proactive Command notification 
21   –  display text 
22   –  get inkey 
23   –  get input 
24   –  select item 
+STIN: 25 
Notification that SIM Application has returned to main menu. If user doesn’t do any action in 2 
minutes, application will return to main menu automatically. 
Defined values 
<cmd_id> 
21   –  display text 
22   –  get inkey 
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23   –  get input 
24   –  select item 
25   –  set up menu 
81   –  session end (pdu mode only) 
0   –  none command 
Examples 
AT+STIN? 
+STIN: 24 
OK 
11.2  AT+STGI    Get SAT information 
Description   
Regularly this command is used upon receipt of an URC "+STIN" to request the parameters of the 
Proactive  Command.  Then the TA is expected to acknowledge the AT+STGI 
response with 
AT+STGR to confirm that the Proactive Command has been executed. AT +STGR will also provide 
any user information, e.g. a selected menu item. The Proactive Command type value specifies to 
which "+STIN" the command is related. 
NOTE: Please check the format refered to AT+STKFMT 
SIM PIN References 
YES Vendor 
Syntax 
Test Command  Responses 
AT+STGI=?  OK 
Write Command  Responses 
AT+STGI=
<
cmd_id
>
 PDU format 
+STGI: 
<
cmd_id
>,<
tag
>,<
pdu_len
>,<
pdu_value
>
OK 
AT+STGI=
<
cmd_id
>
 NOT PDU format, listed below: 
If <cmd_id>=10: 
OK 
If <cmd_id>=21: 
+STGI:21,<prio>,<clear_mode>,<text_len>,<text> 
OK 
If <cmd_id>=22: 
+STGI: 22,< rsp_format>,< help>,<text_len>,<text> 
OK 
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If <cmd_id>=23: 
+STGI:23,<rsp_format>,<max_len>,<min_len>,<help>,<show>,<t
ext_len>,<text> 
OK 
If <cmd_id>=24: 
+STGI:24,<help>,<softkey>,<present>,<title_len>,<title>,<item_n
um> 
+STGI:24,<item_id>,<item_len>,<item_data> 
[…] 
OK 
If <cmd_id>=25: 
+STGI:25,<help>,<softkey>,<title_len>,<title>,<item_num> 
+STGI:25,<item_id>,<item_len>,<item_data> 
[...] 
OK 
Defined values 
<cmd_id> 
21   –  display text 
22   –  get inkey 
23    –    get input 
24   –  select item 
25   –  set up menu 
<prio> 
Priority of display text 
0    –    Normal priority 
1    –    High priority 
<clear_mode> 
0    –    Clear after a delay 
1    –    Clear by user 
<text_len> 
Length of text 
<rsp_format> 
0    –    SMS default alphabet 
1    –    YES or NO 
2    –    numerical only 
3    –    UCS2 
<help> 
0    –    Help unavailable 
1    –    Help available 
<max_len> 
Maximum length of input 
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<min_len> 
Minimum length of input 
<show> 
0    –    Hide input text 
1    –    Display input text 
<softkey> 
0    –    No softkey preferred 
1    –    Softkey preferred 
<present> 
Menu presentation format available for select item 
0    –    Presentation not specified 
1    –    Data value presentation 
2    –    Navigation presentation 
<title_len> 
Length of title 
<item_num> 
Number of items in the menu 
<item_id> 
Identifier of item 
<item_len> 
Length of item 
<title> 
Title in ucs2 format 
<item_data> 
Content of the item in ucs2 format 
<text> 
Text in ucs2 format. 
<tag> 
Not used now. 
<pdu_len> 
Integer type, pdu string length 
<pdu_value> 
String type, the pdu string. 
Examples 
AT+STGI=25 (NOT PDU format) 
+STGI:25,0,0,10,"795E5DDE884C59295730",15 
+STGI:25,1,8,"8F7B677E95EE5019" 
+STGI:25,2,8,"77ED4FE17FA453D1" 
+STGI:25,3,8,"4F1860E05FEB8BAF" 
+STGI:25,4,8,"4E1A52A17CBE9009" 
+STGI:25,5,8,"8D448D3963A88350" 
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+STGI:25,6,8,"81EA52A9670D52A1" 
+STGI:25,7,8,"8F7B677E5F6994C3" 
+STGI:25,8,8,"8BED97F367425FD7" 
+STGI:25,9,10,"97F34E506392884C699C" 
+STGI:25,10,8,"65B095FB59296C14" 
+STGI:25,11,8,"94C358F056FE7247" 
+STGI:25,12,8,"804A59294EA453CB" 
+STGI:25,13,8,"5F005FC34F1195F2" 
+STGI:25,14,8,"751F6D3B5E388BC6" 
+STGI:25,21,12,"00530049004D53614FE1606F"   
OK 
AT+STGI=24 (PDU format) 
+STGI:24,0,48,"D02E81030124008202818285098070ED70B963A883508F0A018053057F574E0
78C618F0C02809177917777ED6D88606F" 
OK 
11.3  AT+STGR  SAT respond 
Description   
The TA is expected to acknowledge the AT+STGI response with AT+STGR to confirm that the 
Proactive Command has been executed. AT +STGR 
will also provide any user information, e.g. a 
selected menu item. 
NOTE: Please check the format refered to AT+STKFMT 
SIM PIN References 
YES Vendor 
Syntax 
Test Command  Responses 
AT+STGR=?  OK 
Write Command  Responses 
AT+STGR=<cmd_id>[,<dat
a>]
NOT PDU format 
OK 
AT+STGR=<pdu_len>,<pdu
_value> 
PDU format 
OK 
Defined values 
<cmd_id> 
22   –  get inkey 
23    –    get input 
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24   –  select item 
25    –    set up menu   
81   –  session end 
83    –    session end by user 
84   –  go backward 
<data> 
If <cmd_id>=22: 
Input a character 
If <cmd_id>=23: 
Input a string. 
If <rsp_format> is YES or NO, input of a character in case of ANSI character set requests one 
byte, e.g. “Y”. 
If <rsp_format> is numerical only, input the characters in decimal number, e.g. “123” 
If <rsp_faomat> is UCS2, requests a 4 byte string, e.g. “0031” 
<rsp_faomat> refer to the response by AT+STGI=23 
If <cmd_id>=24: 
Input the identifier of the item selected by user 
If <cmd_id>=25: 
Input the identifier of the item selected by user 
If <cmd_id>=83: 
<data> ignore 
Note: It could return main menu during Proactive Command id is not 22 or 23 
If <cmd_id>= 84: 
<data> ignore 
<pdu_len> 
Integer type, pdu string length 
<pdu_value> 
String type, the pdu string. 
Examples 
AT+STGR=25,1   (NOT PDU format) 
OK 
+STIN: 24 
AT+STGR=30,"810301240002028281830100900101"  (PDU format) 
OK 
11.4  AT+STK  STK switch 
Description   
This command is used to disable or enable the STK function. If the argument is 1, it is enabled. 
While if the argument is 0, it is disabled. 
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SIM PIN References 
NO Vendor 
Syntax 
Test Command  Responses 
AT+STK=?  +STK: (list of supported <value>s) 
OK 
Read Command 
Responses 
AT+STK?  +STK: <value> 
OK 
Write Command 
Responses 
AT+STK=<value> OK   
ERROR 
Execution Command 
Responses 
AT+STK Set default value (<value>=0): 
OK 
Defined values 
<value> 
0  –  Disable STK 
1  –  Enable STK 
Examples 
AT+STK=1 
OK 
11.5   AT+STKFMT  Set STK pdu format 
Description   
This command is used to disable or enable the STK pdu mode. If the argument is 1, it is enabled. 
While if the argument is 0, it is disabled. 
NOTE: Module should reboot to take effective. 
SIM PIN References 
YES Vendor 
Syntax 
Read Command 
Responses 
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AT+STKFMT?  +STKFMT: <value> 
OK 
Write Command  Responses 
AT+STKFMT=<value> 
OK   
ERROR 
Defined values 
<value> 
0  –  Disable STK pdu format, decoded command mode. 
1  –  Enable STK pdu format 
NOTE: 7100 default value 0, 7500/7600 default value 1. 
Examples 
AT+STKFMT=1 
OK 
11.6  AT+STENV  Original STK PDU Envelope Command 
Description   
This command is used to original stk pdu envelope command. 
NOTE: PDU format supported only. 
SIM PIN References 
YES Vendor 
Syntax 
Test Command  Responses 
AT+STENV=? 
OK 
Write Command 
Responses 
AT+STENV=<len>,<pdu> 
OK   
ERROR 
Defined values 
<len> 
Integer type, pdu string length 
<pdu> 
String type, pdu value 
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Examples 
AT+STENV=18,"D30782020181900101" 
OK 
11.7  AT+STSM  Get STK Setup Menu List with PDU Mode 
Description   
This command is used to get the stk setup menu list with pdu mode 
NOTE: PDU format supported only. 
SIM PIN References 
YES Vendor 
Syntax 
Test Command  Responses 
AT+STSM=? 
OK 
Read Command 
Responses 
AT+STSM? +STSM: <cmd_id>,<tag>,<pdu_len>, <pdu_value> 
OK 
ERROR 
Defined values 
<cmd_id> 
Integer type, please refer to AT+ST IN  
<tag> 
Not used now. 
<pdu_len> 
Integer type, pdu string length 
<pdu_value> 
String type, the pdu string. 
Examples 
AT+STSM? 
+STSM:25,0,120,"D07681030125008202818285078065B052BF529B8F0A018070ED70B963A883
508F06028070AB94C38F0A03806D41884C77ED4FE18F0A048081EA52A9670D52A18F0A0580
624B673A97F34E508F0606808D854FE18F0A07805A314E50753162118F0A0880767E53D8751F
6D3B8F0A09806D596C5F98919053" 
OK 
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12  AT Commands for Hardware 
12.1  AT+IPREX    Set local baud rate permanently 
Description 
This command sets the baud rate of module’s serial interface permanently, after reboot the baud rate 
is also valid, if set to 0, then support autobaud, and t
he value of the IPR will be changed to current 
baudrate when the autobaud is successful. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+IPREX=? +IPREX: (list of supported<speed>s) 
OK 
Read Command  Responses 
AT+IPREX? +IPREX: <speed> 
OK 
Write Command  Responses 
AT+IPREX=<speed> OK 
ERROR 
Execution Command Responses 
AT+IPREX Set default value 115200: 
OK 
Defined values 
<speed> 
Baud rate per second: 
0, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800,921600, 
3000000,3200000,3686400,4000000 
Examples 
AT+IPREX? 
+IPREX: 115200 
OK 
AT+IPREX=? 
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+IPREX: (0,300,600,1200,2400,4800,9600,19200,38400,57600,115200,230400,460800,921600, 
3000000,3200000,3686400,4000000) 
OK 
AT+IPREX=115200 
OK
AT+IPREX=0 
OK 
12.2  AT+CFGRI    Indicate RI when using URC 
Description 
This command is used to config whether pulling down the RI pin of UART when URC reported. If   
<status> is 1, host may be wake up by RI pin.   
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CFGRI=? +CFGRI: (range of supported <status>s) 
OK 
Read Command  Responses 
AT+CFGRI? +CFGRI: <status> 
OK 
Write Command  Responses 
AT+CFGRI=<status
> 
OK 
ERROR 
Execution Command  Responses 
AT+CFGRI 
Set <status> = 0 
OK 
Defined values 
<status> 
0  off 
1  on 
Examples 
AT+CFGRI=? 
+CFGRI: (0-1) 
OK 
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AT+CFGRI? 
+CFGRI: 0 
OK 
AT+CFGRI=1 
OK
AT+CFGRI 
OK 
12.3  AT+CSCLK Control UART Sleep 
Description 
This command is used to enable UART Sleep or always work, 
if set to 1, UART can sleep when DTR pull high 
if set to 0, UART always work 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CSCLK=? +CSCLK: (range of supported <status>s) 
OK 
Read Command 
Responses 
AT+ CSCLK?  +CSCLK: <status> 
OK 
Write Command  Responses 
AT+CSCLK=<status> OK 
ERROR 
Execution Command 
Responses 
AT+CSCLK Set <status> = 0 
OK 
Defined values 
<status> 
0  off 
1  on 
Examples 
AT+CSCLK=? 
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+CSCLK: (0-1) 
OK 
AT+CSCLK? 
+CSCLK: 0 
OK 
AT+CSCLK=1 
OK 
AT+CSCLK 
OK 
12.4  AT+CMUX    Enable the multiplexer over the UART 
Description   
This command is used to enable the multiplexer over the UART, after enabled four virtual ports can 
be used as AT command port or MODEM port, the physical UART can no longer transfer data 
directly under this case. 
By default all of the four virtual ports are used as AT command port. 
Second serial port is not support this command. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CMUX=? +CMUX: (0),(0),(1-8),(1-1500),(0),(0),(2-1000) 
OK 
Read Command  Responses 
AT+ CMUX?  +CMUX:<value>,<subset>,<port_speed>,<N1>,<T1>,<N2>,<T2> 
OK 
Write Command 
Responses 
AT+CMUX= 
<value>[,<subset>[,<port
_speed>[,<N1>[,<T1>[,
<
N2
>[,<
T2
>]]]]]]
OK 
ERROR 
Defined values 
< value >:   
  0 – currently only 0 is supported (basic operation mode). 
< subset >:   
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  Currently omitted 
< port_speed >:   
  Currently omitted, you can set speed before enable multiplexer 
< N1>:   
  1-1500 
< T1>:   
  Currently omitted 
< N2>:   
  Currently omitted 
< T2>:   
  2-1000 
Examples 
AT+CMUX=? 
+CMUX: (0),(0),(1-8),(1-1500),(0),(0),(2-1000) 
OK 
AT+CMUX? 
+CMUX: 0,0,5,1500,0,0,600 
OK 
AT+CMUX=0 
OK 
NOTE: Currently only basic operation mode is supported. 
12.5  AT+CGFUNC Enable/disable the function for the special GPIO 
Description 
   SIM7X00 supplies many GPIOs, all of which can be used as General Purpose Input/Output pin, 
interrupt pin and some of them can be used as function pin.   
This command is used to enable/disable the function for the special GPIO. Please consult the 
document “SIM7X00 Series_GPIO_Application_Note” for more details. 
The configuration will be saved automatically. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CGFUNC=?  +CGFUNC:  (list of supported <GPIO>s)
,(list of supported 
<function>s) 
OK 
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Read Command 
Responses 
AT+ CGFUNC=<gpio>  +CGFUNC: <gpio>,<function> 
OK 
ERROR 
Write Command 
Responses 
AT+CGFUNC=<gpio>, 
<function> 
OK 
ERROR 
Defined values 
<GPIO> 
7500C/CE GPIO: 
40: GPIO40/STATU S 
44: GPIO44/SD_DETECT 
7500A GPIO: 
40: GPIO40/STATU S 
<FUNC> 
0 : gpio function. 
1 : function1 
Examples 
AT+CGFUNC=40,1 
OK 
AT+CGFUNC=40 
+CGFUNC: 40,1 
OK 
12.6  AT+CGDRT    Set the direction of specified GPIO 
Description   
This command is used to set the specified GPIO to input or output state. If setting to input state, 
then this GPIO can not be set to high or low value. 
SIM PIN References 
NO  Vendor 
Syntax 
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Test Command  Responses 
AT+CGDRT=? 
+CGDRT:  (list of supported <GPIO>s),(list of supported < 
gpio_io >s) 
OK 
Write Command 
Responses 
AT+CGDRT=<GPIO>, 
<gpio_io> 
OK 
ERROR 
Read Command  Responses 
AT+ CGDRT=<GPIO>  + CGDRT: <GPIO>,<gpio_io> 
OK 
ERROR 
Defined values 
<GPIO> 
The value is GPIO ID, different hardware versions have different values. 
<gpio_io> 
0  –  in 
 1  –  out 
Examples 
AT+CGDRT=43,0 
OK 
12.7  AT+CGSETV    Set the value of specified GPIO 
Description   
This command is used to set the value of the specified GPIO to high or low. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CGSETV=?  +CGSETV:  (list of supported <GPIO>s),(list of supported <
gpio_hl >s) 
OK 
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Write Command 
Responses 
AT+CGSETV=<GPIO>,<gp
io_hl> 
OK 
ERROR 
Defined values 
<GPIO> 
The value is GPIO ID, different hardware versions have different values. 
<gpio_hl> 
0  –  low 
 1  –  high 
Examples 
AT+CGSETV=43,0 
OK 
12.8  AT+CGGETV    Get the value of specified GPIO 
Description 
This command is used to get the value (high or low) of the specified GPIO. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CGGETV=?  +CGGETV: (list of supported <GPIO>s) 
OK 
Write Command  Responses 
AT+CGGETV=<GPIO>  +CGGETV: <GPIO>,<gpio_hl> 
OK 
ERROR 
Defined values 
<GPIO> 
The value is GPIO ID, different hardware versions have different values. 
<gpio_hl> 
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0  –  low 
1 –  high   
NOTE: The GPIO must be set to 
GPIO FUNCTION through AT+CGFUNC, then it will set 
success. 
Examples 
AT+CGGETV=43 
+CGGETV: 43,0 
OK 
12.9  AT+CGISR    Set GPIO interrupt trigger condition 
Description 
The module supplies many GPIOs, all of which can be used as General Purpose Input/Oupt pin, 
interrupt pin and some of them can be used as function pin. 
This command is used to set one GPIO pin as an interrupt source, and then set the detect 
type[optional] and polarity type[optional], and enable interrupt. Please consult the document 
“SIM7X00 Series_GPIO_Application_Note” for more details. 
SIM PIN References 
No   
Syntax 
Test Command 
Responses 
AT+CGISR=?  +CGISR: (list of supported <GPIO>s), <detect>,<polarity>,<
URC 
char [size(49)]> 
OK 
Read Command 
Responses 
AT+CGISR=<GPIO>  opened: 
+CGISR: < GPIO >,<detect>,<polarity>,<URC> 
not opened: 
+CGISR: < GPIO >,< detect > 
OK 
Write Command 
Responses 
AT+ CGISR=<GPIO >,<dete
ct>,<polarity>,[<URC>] 
OK 
Defined values 
< GPIO > 
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The value is GPIO ID, different hardware versions have different values. 
< detect > 
0    –  no detect. 
1    –  level detection 
2    –  edge detection 
< polarity > 
0    –  low level/edge detection 
1    –  high level/edge detection 
<URC > 
Your ISR string 
Examples 
AT+CGISR=41 
+CGISR : 41,1,1,GPIO_41_ISR!   If the pin ISR is opened 
OK 
+CGISR : 41,0   If the pin ISR is not opened 
OK 
AT+CGISR=41,0,1 
OK 
NOTE: 
1.    if the interruption is triggered SIM7X00 will send the following URC to host, URC is your ISR string or 
GPIO_< GPIO >_ISR 
2. Default <detect> is 0 and default <polarity> is 1. 
3. After setting one GPIO pin as an interrupt source successfully, the setting will be saved. 
4. If the gpio use to interruption,before the gpio mustbe config on GPIO function 
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13  AT Commands for File System 
The file system is used to store files in a hierarchical (tree) structure, and there are some definitions and 
conventions to use the Module. 
Local storage space is mapped to “C:”. 
NOTE: General rules for naming (both directories and files): 
1 The length of actual fully qualified names of directories and files can not exceed 254.   
2 Directory and file names can not include the following characters: 
         \  :  *  ?  “  <  >  |  ,  ; 
3 Between directory name and file/directory name, use character “/” as list separator, so it can not 
appear in directory name or file name. 
4 The first character of names must be a letter or a numeral or underline, and the last character can 
not be period “.” and oblique “/”. 
13.1  AT+FSCD    Select directory as current directory 
Description 
This command is used to select a directory. The Module supports absolute path and relative path. 
Read Command will return current directory without double quotation marks.support SDcard. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+FSCD=? 
OK 
Read Command 
Responses 
AT+FSCD? +FSCD: <curr_path> 
OK 
Write Command  Responses 
AT+FSCD=<path> +FSCD: <curr_path> 
OK 
ERROR 
Defined values 
<path> 
String without double quotes, directory for selection. 
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NOTE: If <path> is “..”, it will go back to previous level of directory.   
<curr_path> 
String without double quotes, current directory. 
Examples 
AT+FSCD=C: 
+FSCD: C:/ 
OK 
AT+FSCD=C:/ 
+FSCD: C:/ 
OK 
AT+FSCD?
+FSCD: C:/ 
OK 
AT+FSCD=.. 
+FSCD: C:/ 
OK 
AT+FSCD=D: 
+FSCD: D:/ 
OK 
AT+FSCD? 
+FSCD:D:/ 
OK 
13.2  AT+FSMKDIR    Make new directory in current directory 
Description 
This command is used to create a new directory in current directory.Support SDcard. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+FSMKDIR=? OK 
Write Command 
Responses 
AT+FSMKDIR=<dir> OK 
ERROR 
Defined values 
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<dir> 
String without double quotes, directory name which does not already exist in current directory. 
Examples 
AT+FSMKDIR= SIMTech 
OK 
AT+FSCD? 
+FSCD: C:/ 
OK 
AT+FSLS 
+FSLS: SUBDIRECTORIES: 
SIMTech 
OK 
13.3  AT+FSRMDIR    Delete directory in current directory 
Description 
This command is used to delete existing directory in current directory. Support SDcard. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+FSRMDIR=? OK 
Write Command  Responses 
AT+FSRMDIR=<dir> OK 
ERROR 
Defined values 
<dir> 
String without double quotes. 
Examples 
AT+FSRMDIR=SIMTech 
OK 
AT+FSCD? 
+FSCD: C:/ 
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OK 
AT+FSLS 
+FSLS: SUBDIRECTORIES: 
Audio 
Picture 
Video 
VideoCall 
OK 
13.4  AT+FSLS    List directories/files in current directory 
Description   
This command is used to list informations of directo
ries and/or files in current directory. Support 
SDcard. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT +FS LS = ?   +FSLS: (list of supported <type>s) 
OK 
Read Command  Responses 
AT +FS LS ?  +FSLS: SUBDIRECTORIES:<dir_num>,FILES:<file_num> 
OK 
Write Command 
Responses 
AT+FSLS=<type> [+FSLS: SUBDIRECTORIES: 
<list of subdirectories> 
<CR><LF>] 
[+FSLS: FILES: 
<list of files> 
<CR><LF>] 
OK 
Execution Command  Responses 
AT+FSLS [+FSLS: SUBDIRECTORIES: 
<list of subdirectories> 
<CR><LF>] 
[+FSLS: FILES: 
<list of files> 
<CR><LF>] 
OK 
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Defined values 
<dir_num> 
Integer type, the number of subdirectories in current directory. 
<file_num> 
Integer type, the number of files in current directory. 
<type> 
0  –  list both subdirectories and files 
1  –  list subdirectories only 
 2  –  list files only 
Examples 
AT+FSLS? 
+FSLS: SUBDIRECTORIES:2,FILES:2 
OK 
AT+FSLS 
+FSLS: SUBDIRECTORIES: 
FirstDir 
SecondDir 
+FSLS: FILES: 
image_0.jpg 
image_1.jpg 
OK 
AT+FSLS=2 
+FSLS: FILES: 
image_0.jpg 
image_1.jpg 
OK 
13.5  AT+FSDEL  Delete file in current directory 
Description   
This command is used to delete a file in current directory. Before do that, it needs to use AT+FSCD 
select the father directory as current directory. Support SDcard. 
SIM PIN References 
NO  Vendor 
Syntax 
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Test Command 
Responses 
AT+FSDEL=? 
OK 
Write Command  Responses 
AT+FSDEL=<filename> 
OK 
ERROR 
Defined values 
<filename> 
String with or without double quotes, file name which is relative and already existing. 
If <filename> is *.*, it means delete all files in current directory. 
If the file path contains non-
ASCII characters, the filename parameter should contain a prefix of 
{non-ascii} and the quotation mark. 
Examples 
AT+FSDEL=image_0.jpg 
OK 
13.6  AT+FSRENAME    Rename file in current directory 
Description   
This command is used to rename a file in current directory. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+FSRENAME=? OK 
Write Command  Responses 
AT+FSRENAME= 
<old_name>,<new_name> 
OK 
ERROR 
Defined values 
<old_name> 
String with or without double quotes, file name which is existed in current directory. If the file path 
contains non-ASCII characters, the file path parameter should contain a prefix of {non-ascii} and 
the quotation mark. 
<new_name> 
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New name of specified file, string with or without double quotes. 
If the file path contains 
non-ASCII characters, the file path parameter should contain a prefix of {non-
ascii} and the 
quotation mark. 
Examples 
AT+FSRENAME=image_0.jpg, image_1.jpg 
OK 
AT+FSRENAME= "my test.jpg", {non-ascii}"E6B58BE8AF95E99984E4BBB62E6A7067" 
OK 
13.7  AT+FSATTRI    Request file attributes 
Description   
This command is used to request the attributes of file which exists in current directory. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+FSATTRI=? 
OK 
Write Command  Responses 
AT+FSATTRI=<filename> +FSATTRI: <file_size>, <create_date> 
OK 
Defined values 
<filename> 
String with or without double quotes, file name which is in current directory. If the file path 
contains non-ASCII characters, the file path parameter should contain a prefix of {non-ascii} and 
the quotation mark. 
<file_size> 
The size of specified file, and the unit is in Byte. 
<create_date> 
Create date and time of specified file, the format is YYYY/MM/DD HH/MM/SS Week. 
Week  –  Mon, Tue, Wed, Thu, Fri, Sat, Sun 
Examples 
AT+FSATTRI=image_0.jpg 
+FSATTRI: 8604, 2008/04/28 10:24:46 Tue 
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OK 
AT+FSATTRI={non-ascii}"E6B58BE8AF95E99984E4BBB62E6A7067" 
+FSATTRI: 6296, 2012/01/06 00:00:00 Sun 
OK 
13.8  AT+FSMEM    Check the size of available memory 
Description 
This command is used to check the size of available memory. The response will list total size and 
used size of local storage space if present and mounted. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+FSMEM=?  OK 
Execution Command  Responses 
AT+FSMEM +FSMEM: C:(<total>, <used>) 
OK 
Defined values 
<total> 
The total size of local storage space. 
<used> 
The used size of local storage space. 
NOTE: The unit of storage space size is in Byte. 
Examples 
AT+FSMEM 
+FSMEM: C:(11348480, 2201600) 
OK 
13.9  AT+FSLOCA    Select storage place 
Description 
This command is used to set the storage place for media files.   
SIM PIN References 
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NO 
Vendor 
Syntax 
Test Command  Responses 
AT+FSLOCA=?  +FSLOCA: (list of supported <loca>s) 
OK 
Read Command 
Responses 
AT+FSLOCA? +FSLOCA: <loca> 
OK 
Write Command 
Responses 
AT+FSLOCA=<loca> 
OK 
ERROR 
Defined values 
<loca> 
0  –  store media files to local storage space (namely “C:/”) 
Examples 
AT+FSLOCA=0 
OK 
AT+FSLOCA? 
+FSLOCA: 0 
OK 
13.10  AT+FSCOPY  Copy an appointed file 
Description   
This command is used to copy an appointed file on C:/ to an appointed directory on C:/, the new file 
name should give in parameter. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+FSCOPY=? OK 
Write Command  Responses 
AT+FSCOPY=<file1>,<file +FSCOPY: <percent> 
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2>[<sync_mode>]  [+FSCOPY: <percent>] 
OK 
OK 
+FSCOPY: <percent> 
[+FSCOPY: <percent>] 
+FSCOPY: END 
If found any error: 
SD CARD NOT PLUGGED IN 
FILE IS EXISTING 
FILE NOT EXISTING 
DIRECTORY IS EXISTED 
DIRECTORY NOT EXISTED 
FORBID CREATE DIRECTORY UNDER \"C:/\" 
FORBID DELETE DIRECTORY 
INVALID PATH NAME 
INVALID FILE NAME 
SD CARD HAVE NO ENOUGH MEMORY 
EFS HAVE NO ENOUGH MEMORY 
FILE CREATE ERROR 
READ FILE ERROR 
WRITE FILE ERROR 
ERROR 
Defined values 
<file1> 
The  sources file name  or the whole path name with sources file 
name. If the file path contains 
non-ASCII characters, the file path parameter should contain a prefix of {non-
ascii} and the 
quotation mark. 
<file2> 
The  destination  file name or the whole path name with destination  file name. If the file path 
contains non-ASCII characters, the file path parameter should contain a prefix of {non-ascii} and 
the quotation mark. 
<percent> 
The percent of copy done. The range is 0.0 to 100.0 
<sync_mode> 
The execution mode of the command: 
0  –  synchronous mode 
1  –  asynchronous mode 
NOTE:   
1. The <file1> and <file2> should give the whole path and name, if only given file name, it will 
refer to current path (AT+FSCD) and check the file’s validity. 
2. If    <file2> is a whole path and name, make sure the directory exists, make sure that the file 
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name does not exist or the file name is not the same name as the sub folder name, otherwise return 
error. 
3. <percent> report refer to the copy file size. The big file maybe report many times, and little 
file report less. 
4. If <sync_mode> is 1, the command will return OK immediately, and report final result with 
+FSCOPY: END. 
Examples 
AT+FSCD? 
+FSCD: C:/ 
OK 
AT+FSCOPY= C:/TESTFILE,COPYFILE  (Copy file TESTFILE on C:/ to C:/COPYFILE) 
+FSCOPY: 1.0 
+FSCOPY: 9.7 
+FSCOPY: 19.4 
… 
+FSCOPY: 100.0 
OK 
AT+FSCOPY= "my test.jpg", {non-ascii}"E6B58BE8AF95E99984E4BBB62E6A7067" 
+FSCOPY:1.0 
+FSCOPY:100.0 
OK 
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14  AT Commands for File Transmission 
14.1  AT+CFTRANRX    Transfer a file to EFS 
Description   
This command is used to transfer a file to EFS.Support SDcard. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CFTRANRX=?  +CFTRANRX: [{non-ascii}]"FILEPATH" 
OK 
Write Command 
Responses 
AT+CFTRANRX=“<filepat
h>”,<len> 
> 
OK 
> 
ERROR 
ERROR 
Defined values 
<filepath> 
The path of the file on EFS. 
<len> 
The length of the file data to send. 
NOTE 
The <filepath> must be a full path with the directory path. 
Examples 
AT+CFTRANRX=”c:/MyDir/t1.txt”,10 
>testcontent 
OK 
AT+CFTRANRX=”d:/MyDir/t1.txt”,10 
>testcontent 
OK 
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14.2  AT+CFTRANTX    Transfer a file from EFS to host 
Description   
This command is used to transfer a file from EFS to host. Before using this command, the 
AT+CATR must be used to set the correct port used. Support SDcard. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CFTRANTX=?  +CFTRANTX: [{non-ascii}]"FILEPATH" 
OK 
Write Command  Responses 
AT+CFTRANTX=“<filepath
>” 
[+CFTRANTX: DATA,<len> 
… 
+CFTRANTX: DATA,<len>] 
+CFTRANTX: 0 
OK 
ERROR 
Defined values 
<filepath> 
The path of the file on EFS. 
<len> 
The length of the following file data to output. 
NOTE 
The <filepath> must be a full path with the directory path. 
Examples 
AT+CFTRANTX=”c:/MyDir/t1.txt” 
+CFTRANTX: DATA, 10 
Testcontent 
+CFTRANTX: 0 
OK 
AT+CFTRANTX=”d:/MyDir/t1.txt” 
+CFTRANTX: DATA, 10 
Testcontent 
+CFTRANTX: 0 
OK 
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15  AT Commands for Internet Service 
15.1  PDP 
15.1.1 AT+CSOCKSETPN  Set active PDP context’s profile number 
Description 
This command sets default active PDP context’s profile number. W
hen we activate PDP by using 
AT+NETO PEN 
command, we need use the default profile number, and the context of this profile is 
set by AT+CGCONT command. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+CSOCKSETPN=? +CSOCKSETPN: (list of supported <profile_number>s) 
OK 
ERROR 
Read Command  Responses 
AT+CSOCKSETPN? 
+CSOCKSETPN: <profile_number> 
OK 
ERROR 
Write Command  Responses 
AT+CSOCKSETPN=<profil
e_number> 
OK 
ERROR 
Execution Command Responses 
AT+CSOCKSETPN OK 
ERROR 
Defined values 
<profile_number> 
A numeric parameter that identifies default profile number, the range of permitted values is one to 
sixteen. 
1…24,100…179 
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Examples 
AT+CSOCKSETPN=1 
OK 
15.1.2 AT+CIPDNSSET    Set DNS query parameters 
Description 
This command is used to set DNS query parameters. The timeout value for performing DNS query 
is <net_open_time> + 3000ms + 1000ms*<dns_query_retry_counter>. Here <net_open_time> is 
the time for opening PS network. <dns_query_retry_counter> is the retry counter for sending DNS 
query using UDP packet.   
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CIPDNSSET=? 
OK 
Read Command 
Responses 
AT+CIPDNSSET?  +CIPDNSSET: 
<max_net_retries>,<net_timeout>,<max_query_retries> 
OK 
Write Command  Responses 
AT+CIPDNSSET=[<ma
x_net_retries>][, 
[<net_timeout>][, 
[<max_query_retries>]]] 
OK 
ERROR 
Defined values 
<max_net_retries> 
Maxmimum retry times for opening PS network to perform DNS query. The range is from 0 to 3. 
Default value is 3. 
<net_timeout> 
Timeout value for each opening PS network operation when performing DNS query. The range is 
from 3000ms to 120000ms. Default value is 30000ms. 
<max_query_retries> 
Maximum retry times for performing DNS query using UDP packet. The range is from 0 to 7. 
Default value is 7. 
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Examples 
AT+CIPDNSSET? 
+CIPDNSSET: 1,30000,3 
OK 
AT+CIPDNSSET=1,30000,1 
OK 
15.1.3  AT+CDNSGIP   Query the IP address of given domain name 
Description   
This command is used to query the IP address of given domain name.   
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CDNSGIP=? OK 
ERROR 
Write Command 
Responses 
AT+CDNSGIP=<domain 
name> 
If successful,return: 
+CDNSGIP: 1,<domain name>,<IP address> 
OK 
If fail,return: 
+CDNSGIP: 0,<dns error code> 
ERROR 
ERROR 
Defined values 
<domain name> 
  A string parameter (string should be included in quotation marks) which indicates the do
ma-in name.   
<IP address> 
  A  string parameter (string should be included in quotation marks) which indicates the IP 
address corresponding to the domain name.   
<dns error code> 
  A numeric parameter which indicates the error code. 
    10   DNS GENERAL ERROR   
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Examples 
AT+CDNSGIP=? 
OK 
AT+CDNSGIP=”www.google.com” 
+CDNSGIP: 1,"www.google.com","203.208.39.99" 
OK 
15.1.4  AT+CDNSGHNAME  Query the domain name of given IP 
address 
Description   
This command is used to query the domain name of given IP address.   
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CDNSGHNAME=? OK 
ERROR 
Write Command  Responses 
AT+CDNSGHNAME=<IP 
address> 
If successful,return: 
+CDNSGHNAME: <index>,<domain name>,<IP address> 
OK 
If fail,return: 
+CDNSGHNAME: 0,<dns error code> 
ERROR 
ERROR 
Defined values 
<domain name> 
  A string parameter (string should be included in quotation marks) which indicates the do
ma-in name.   
<IP address> 
  A  string parameter (string should be included in quotation marks) which indicates the IP 
address corresponding to the domain name.   
<dns error code> 
  A numeric parameter which indicates the error code. 
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    10   DNS GENERAL ERROR   
<index> 
  A  numeric parameter which indicates DNS result index.  This  value is always 1 if performing 
successfully. Currently only the first record returned from the DNS server will be reported. 
Examples 
AT+CDNSGHNAME=? 
OK 
AT+CDNSGHNAME=” 58.32.231.148” 
+CDNSGHNAME: 1,"mail.sim.com","58.32.231.148" 
OK 
15.1.5  AT+CPING   Ping destination address 
Description   
This command is used to ping destination address. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CPING=?  +CPING:  IP address, 
(list of supported 
<dest_addr_type>s),(1-100),(4-188),(1000-10000),(10000-1
00000), (16-255) 
OK 
ERROR 
Write Command  Responses 
AT+ CPING=<dest_addr>,<dest_ad
dr_type> 
[,<num_pings>[,<data_packet_size
>[,<interval_time>[,<wait_time> 
[,<TTL>]]]]] 
OK 
If ping’s result_type = 1 
+CPING: 
<result_type>,<resolved_ip_addr>,<data_packet_size>,<rtt>,
<TTL> 
If ping’s result_type = 2 
+CPING: <result_type> 
If ping’s result_type = 3 
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+CPING: 
<result_type>,<num_pkts_sent>,<num_pkts_recvd>,<num_p
kts_lost>,<min_rtt>,<max_rtt>,<avg_rtt> 
ERROR 
Defined values 
<dest_addr> 
The destination is to be pinged; it can be an IP address or a domain name. 
<dest_addr_type> 
Integer type. Address family type of the destination address 
1 – IPv4. 
2 – IPv6(reserved) 
<num_pings> 
Integer type. The num_pings specifies the number of times the ping request (1-100) is to be sent. 
The default value is 4. 
<data_packet_size> 
Integer type. Data byte size of the ping packet (4-188). The default value is 64 bytes. 
<interval_time> 
Integer type. Interval between each ping. Value is specified in milliseconds (1000ms-10000ms). The 
default value is 2000ms. 
<wait_time> 
Integer type. 
Wait time for ping response. An ping response received after the timeout shall not be 
processed. Value specified in milliseconds (10000ms-100000ms). The default value is 10000ms. 
<TTL> 
Integer type.  TTL(Time-To-
Live) value for the IP packet over which the ping(ICMP ECHO 
Request message) is sent (16-255), the default value is 255. 
<result_type> 
1 – Ping success 
2 – Ping time out 
3 – Ping result 
<num_pkts_sent> 
Indicates the number of ping requests that were sent out. 
<num_pkts_recvd> 
Indicates the number of ping responses that were received. 
<num_pkts_lost> 
Indicates the number of ping requests for which no response was received. 
<min_rtt> 
Indicates the minimum Round Trip Time(RTT). 
<max_rtt> 
Indicates the maximum RTT. 
<avg_rtt> 
Indicates the average RTT. 
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<resolved_ip_addr> 
Indicates the resolved ip address. 
< rtt> 
Round Trip Time. 
Examples 
AT+ CPING=? 
+CPING:IP address,(1,2), (1-100), (4-188),(1000-10000),(10000-100000), (16-255) 
OK 
AT+CPING="www.baidu.com",1,4,64,1000,10000,255 
OK 
+CPING: 1,119.75.217.56,64,410,255 
+CPING: 1,119.75.217.56,64,347,255 
+CPING: 1,119.75.217.56,64,346,255 
+CPING: 1,119.75.217.56,64,444,255 
+CPING: 3,4,4,0,346,444,386 
15.1.6  AT+CPINGSTOP    Stop an ongoing ping session 
Description   
This command is used to stop an ongoing ping session. 
SIM PIN References 
YES 
Vendor 
Syntax 
Test Command  Responses 
AT+ CPINGSTOP=? OK 
Write Command  Responses 
AT+ CPINGSTOP +CPING: 
<result_type>,<num_pkts_sent>,<num_pkts_recvd>,<num_p
kts_lost>,<min_rtt>,<max_rtt>,<avg_rtt> 
OK 
OK 
ERROR 
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Defined values 
<result_type> 
1 – Ping success 
2 – Ping time out 
3 – Ping result 
<num_pkts_sent> 
Indicates the number of ping requests that were sent out. 
<num_pkts_recvd> 
Indicates the number of ping responses that were received. 
<num_pkts_lost> 
Indicates the number of ping requests for which no response was received. 
<resolved_ip_addr> 
Indicates the resolved ip address. 
<min_rtt> 
Indicates the minimum Round Trip Time (RTT). 
<max_rtt> 
Indicates the maximum RTT. 
<avg_rtt> 
Indicates the average RTT. 
Examples 
AT+ CPINGSTOP 
OK 
15.1.7   AT+CTCPFIN  Configure TCP FIN 
Description   
This command is used to configure whether the module should wait for TCP_FIN in 
TCP_FINWAIT2 state. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+CTCPFIN=? +CTCPFIN: (list of supported <TCP_FIN_Enable>s) 
OK 
ERROR 
Read Command  Responses 
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AT+CTCPFIN? 
+CTCPFIN:<TCP_FIN_Enable> 
OK 
ERROR 
Write Command 
Responses 
AT+CTCPFIN=<TCP_FIN_
Enable> 
OK 
ERROR 
Defined values 
< TCP_FIN_Enable > 
a numeric parameter which sets whether waiting for TCP_FIN inTCP_FINWAIT2 state. 
0  not waiting 
1  waiting 
Examples 
AT+CTCPFIN=? 
+CTCPFIN: (0,1) 
OK 
AT+CTCPFIN=1 
OK 
15.1.8  AT+CTCPKA  Conigure TCP heartbeat 
Description   
This command is used to set TCP heartbeat parameters.. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+CTCPKA=? +CTCPKA:  (list of supported <TCP_KA_Enable>
s),(list of 
supported  <KeepIdleTm>
s) ,(list of supported 
<KeepAliveMaxTry>s) 
OK 
Read Command  Responses 
AT+CTCPKA? 
+CTCPKA:<TCP_KA_Enable>,<KeepIdleTm>,<KeepAliveMaxT
ry> 
OK 
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Write Command 
Responses 
AT+CTCPKA=<TCP_KA_
Enable>,<KeepIdleTm>,<Ke
epAliveMaxTry> 
OK 
ERROR 
Defined values 
< TCP_KA_Enable > 
a numeric parameter which sets whether enable TCP heartbeat function or not. 
0  disable 
1  enable 
<KeepIdleTm> 
a numeric parameter which is number of minutes to delay after last time of sending TCP data. The 
range is 1 to 120. 
<KeepAliveMaxTry> 
Maximum times for sending Keep-Alive checking. The range is 1 to 10. 
Examples 
AT+CTCPKA=? 
+CTCPKA: (0,1),(1-120) ,(1-10) 
OK 
AT+CTCPKA=1,3,3 
OK 
15.1.9  AT+CTEUTP  Set unknown incoming TCP packet echo 
Description   
This command is used to enable or disable unknown incoming TCP packet echo. 
SIM PIN References 
 YES  Vendor 
Syntax 
Test Command  Responses 
AT+CTEUTP=? +CTEUTP: (list of supported <Echo_Unknown_TCP_Enable>s) 
OK 
ERROR 
Read Command 
Responses 
AT+CTEUTP? 
+CTEUTP:<Echo_Unknown_TCP_Enable> 
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OK 
ERROR 
Write Command Responses 
AT+CTEUTP=<Echo_Unkn
own_TCP_Enable> 
OK 
ERROR 
Defined values 
<Echo_Unknown_TCP_Enable> 
a numeric parameter which sets whether enable or disable unknown incoming TCP packet echo 
option. 
0  disable 
1  enable 
Examples 
AT+CTEUTP=? 
+CTEUTP: (0,1) 
OK 
AT+CTEUTP=1 
OK 
15.1.10 AT+CUPURE  Set UDP port unreachable ICMP echo 
Description   
This command is used to enable or disable UDP port unreachable echo. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CUPURE=? +CUPURE: 
(list of supported 
<UDP_PORT_UNREACHABLE_Enable>s) 
OK 
ERROR 
Read Command  Responses 
AT+CUPURE? +CUPURE:< UDP_PORT_UNREACHABLE_Enable> 
OK 
ERROR 
Write Command Responses 
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AT+CUPURE=<UDP_POR
T_UNREACHABLE_Enabl
e> 
OK 
ERROR 
Defined values 
<UDP_PORT_UNREACHABLE_Enable> 
a numeric parameter wh
ich sets whether enable or disable UDP port unreachable ICMP echo 
option. 
0  disable 
1  enable 
Examples 
AT+CUPURE=? 
+CUPURE: (0,1) 
OK 
AT+CUPURE=1 
OK 
15.1.11 AT+CINICMPALLOW  Preferred ICMP filter 
Description   
This command is used to filter the incoming ICMP packets that are not allowed. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+ C INICMPALLOW=?  + CINICMPALLOW: (list of supported <mode>s) 
OK 
ERROR 
Read Command  Responses 
AT+ C INICMPALLOW?  +CINICMPALLOW: <mode> 
OK 
ERROR 
Write Command Responses 
AT+CINICMPALLOW=<m
ode> 
OK 
ERROR 
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Defined values 
<mode> 
64bit number, the value is “1” << “<pos>” , then or by bit. 
<pos> 
  Flag value from 0 to 63. 
Value: 
0      ICMP ECHO REPLY 
3      ICMP DESTINATION UNREACH 
4      ICMP SOURCE QUENCH 
5      ICMP REDIRECT 
8      ICMP ECHO REQUEST 
9        MIP AGENT ADVERTISEMENT 
10      MIP AGENT SOLICITATION   
11           TIME-TO-ALIVE  EXCEEDED 
12      PARAMETER PROBLEM 
13       ICMP TIMESTAMP 
14       ICMP TIME REPLY 
15      INFORMATION REQUEST 
16      INFORMATION REPLY 
17       ADDRESS MASK REQUEST 
18      ADDRESS MASK REPLY 
37       DOMAIN NAME REQUEST 
38      DOMAIN NAME REPLY 
Examples 
AT+CINICMPALLOW=0xFFFFFFFFFFFFFEFF 
OK 
AT+CINICMPALLOW? 
+CINICMPALLOW: 0xFFFFFFFFFFFFFEFF 
OK 
15.1.12 AT+CDNSSRV    Get dns server ip address 
Description 
The write command is used to query the dns server ip address of the specified PDP context (s). 
SIM PIN References 
YES  3GPP TS 27.007 
Syntax 
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Read Command 
Responses 
AT+CDNSSRV?  [+CDNSSRV: [<cid>, <ip_addr>,<prm_dns>,<sec_dns> 
[<CR><LF> 
+ CDNSSRV: <cid>, <ip_addr>,<prm_dns>,<sec_dns> 
[...]]]] 
OK 
Defined values 
<cid> 
A  numeric parameter which specifies a particular PDP context definition (see AT +CGDCONT 
command). 
1…24,100…179 
<ip_addr> 
A string that identifies the IP address when the PDP context is activaed. 
<pri_dns> 
A string that identifies the primary DNS server address when the PDP context is activaed. 
<sec_dns> 
A string that identifies the secondary DNS server address when the PDP context is activaed. 
Examples 
AT+CDNSSRV? 
+CDNSSRV: 1, "10.85.202.25","210.22.70.3","211.95.1.97" 
OK 
15.2  TCP/UDP 
15.2.1  AT+CIPCCFG  Configure parameters of socket 
Description   
This command is used to configure parameters of socket. For the write command, the parameter 
part cannot be empty. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
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AT+CIPCCFG=? +CIPCCFG:  (list of supported <NmRetry>
s),(list of supported 
<DelayTm>s),(list of supported <Ack>s),(list of supported
<errMode>s),(list of supported <HeaderType>
s), (list of supported 
<AsyncMode>s), (list of supported <TimeoutVal>s) 
OK 
ERROR 
Read Command  Responses 
AT+CIPCCFG? +CIPCCFG:<NmRetry>,<DelayTm>,<Ack>,<errMode>,<Header-
Type>,<AsyncMode>,<TimeoutVal> 
OK 
ERROR 
Write Command  Responses 
AT+CIPCCFG=[<NmRetry>
][,[<DelayTm>][,[<Ack>][,[
<errMode>][,]<HeaderType
>][,[[<AsyncMode>][,[<Tim
eoutVal>]]]]]]]] 
OK 
ERROR 
Execution Command Responses 
AT+CIPCCFG Set default value: 
OK 
Defined values 
<
NmRetry> 
a numeric parameter which is number of retransmission to be made for an IP packet.The default 
value is 10. 
<DelayTm> 
a numeric parameter which is number of milliseconds to delay to output data of Receiving.The 
default value is 0. 
<Ack> 
NOTE: This parameter is only used to be compatible with old TCP/IP command set. 
<errMode> 
a numeric parameter which sets mode of reporting error result code. 
0    error result code with numeric values 
1    error result code with string values 
< HeaderType > 
a numeric parameter that select which data header of receiving data, it only takes effect in 
multi-client mode. 
0    add data header, the format is “+IPD<data length>” 
1    add data header, the format is “+RECEIVE,<link num>,<data length>” 
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< AsyncMode > 
NOTE: This parameter is only used to be compatible with old TCP/IP command set. 
< TimeoutVal > 
a numeric parameter that set the minimum retransmission timeout value for TCP connection. The 
unit is millisecond. The range is 500-120000. 
Examples 
AT+CIPCCFG=? 
+CIPCCFG: (0-10),(0-1000),(0),(0-1),(0-1) ,(0) ,(500-120000) 
OK 
AT+CIPCCFG=3,500,1,1,1,0,500 
OK 
15.2.2  AT+CIPSENDMODE  Select sending mode 
Description 
This command is used to 
sending wait peer TCP ACK mode or sending without waiting peer TCP 
ACK mode. The default mode is sending without waiting peer TCP ACK mode. 
NOTE: Currently SIMCom 3G modules su
pport both new TCP/IP command set and old TCP/IP 
command set, the new TCP/IP command set support multiple TCP connections, and backward 
compatible 
with the old command set. When the AT+NETOPEN command called with 
parameters(like AT+NETOPEN=”TCP”) according 
to the old command set, the sending mode 
configured by this command will be ignore, and the TCP data sending will wait for TCP ACK 
always. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CIPSENDMODE=? +CIPSENDMODE: (list of supported <mode>s) 
OK 
Read Command  Responses 
AT+CIPSENDMODE? +CIPSENDMODE: <mode> 
OK 
Write Command 
Responses 
AT+CIPSENDMODE=<
mode> 
OK 
ERROR 
Defined values 
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<mode> 
0  –  sending without waiting peer TCP ACK mode 
1  –  sending wait peer TCP ACK mode 
Examples 
AT+CIPSENDMODE? 
+CIPSENDMODE: 1 
OK 
AT+CIPSENDMODE=1 
OK 
AT+CIPSENDMODE=? 
+CIPSENDMODE: (0,1) 
OK 
15.2.3  AT+CIPTIMEOUT Set TCP/IP timeout value 
Description 
This command is used to set timeout value for AT+NETOPEN/AT+CIPOPEN/AT+CIPSEND. 
SIM PIN References 
NO Vendor 
Syntax 
Test Command  Responses 
AT+CIPTIMEOUT=? OK 
Read Command  Responses 
AT+CIPTIMEOUT?  +CIPTIMEOUT:  <netopen_timeout>,  <cipopen_timeout>,
<cipsend_timeout> 
OK 
Write Command  Responses 
AT+CIPTIMEOUT=[<n
etopen_timeout>][, 
[<cipopen_timeout>][, 
[<cipsend_timeout>]]]
OK 
ERROR 
Defined values 
<netopen_timeout> 
Timeout value for AT+NETOPEN, default value is 120000 milliseconds.The range of this value is 
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from 3000ms to 120000ms. 
<cipopen_timeout> 
Timeout value for AT+CIPOPEN, default value is 120000 milliseconds. The range of this value is 
from 3000ms to 120000ms. 
<cipsend_timeout> 
Timeout value for AT+CIPSEND, default value is 120000 milliseconds. The range of this value is 
from 3000ms to 120000ms. 
Examples 
AT+CIPTIMEOUT? 
+CIPTIMEOUT: 30000,20000,40000 
OK 
AT+CIPTIMEOUT=30000,20000,40000 
OK 
15.2.4  AT+CIPHEAD    Add an IP head when receiving data 
Description 
This command is used to add an IP head when receiving data. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CIPHEAD=? +CIPHEAD: (list of supported<mode>s) 
OK 
ERROR 
Read Command  Responses 
AT+CIPHEAD?  +CIPHEAD: <mode> 
OK 
ERROR 
Write Command 
Responses 
AT+CIPHEAD=<mode> OK 
ERROR 
Execution Command Responses 
AT+CIPHEAD Set default value: 
OK 
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Defined values 
<mode> 
a numeric parameter which indicates whether adding an IP header to received data or not 
 0  –  not add IP header 
    1  –  add IP header, the format is “+IPD(data length)” 
Examples 
AT+CIPHEAD=? 
+CIPHEAD: (0-1) 
OK 
AT+CIPHEAD=0 
OK 
15.2.5  AT+CIPSRIP    Show Remote IP address and Port 
Description 
This command is used to set whether display IP address and port of sender when receiving data. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CIPSRIP=? +CIPSRIP: (list of supported <mode>s) 
OK 
ERROR 
Read Command 
Responses 
AT+CIPSRIP?  +CIPSRIP: <mode> 
OK 
ERROR 
Write Command 
Responses 
AT+CIPSRIP=<mode> 
OK 
ERROR 
Execution Command Responses 
AT+CIPSRIP 
Set default value: 
OK 
Defined values   
<mode> 
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a numeric parameter which indicates whether show the prompt of where the data received or not 
before received data. 
0  –   do not show the prompt 
1  –   show the prompt,the format is as follows:  
“RECV FROM:<IP ADDRESS>:<PORT>” 
Examples 
AT+CIPSRIP=? 
+CIPSRIP: (0-1) 
OK 
AT+CIPSRIP=1 
OK 
15.2.6  AT+CIPMODE    Select TCP/IP application mode 
Description 
This command is used to select transparent mode (data mode) or non-transparent mode (command 
mode ).The default mode is non-transparent mode. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CIPMODE=? +CIPMODE: (list of supported <mode>s) 
OK 
Read Command  Responses 
AT+CIPMODE? +CIPMODE: <mode> 
OK 
Write Command  Responses 
AT+CIPMODE=<mode> 
OK 
ERROR 
Execution Command  Responses 
AT+CIPMODE Set default value
(
<mode>=0
)
: 
OK 
Defined values 
<mode> 
0  –  Non transparent mode 
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1  –  Transparent mode 
Examples 
AT+CIPMODE? 
+CIPMODE: 1 
OK 
AT+CIPMODE=1 
OK 
AT+CIPMODE=? 
+CIPMODE: (0-1) 
OK 
AT+CIPMODE 
OK 
15.2.7  AT+NETOPEN  Open socket 
Description   
This command opens packet network,   
NOTE:  The test command and the writ
e command of AT+NETOPEN is reserved for being 
compatible with old TCP/IP command set, and the old TCP/IP command set is not recommended to 
be used any longer. 
SIM PIN References 
YES  Vendor 
Syntax 
Read Command  Responses 
AT+NETOPEN? +NETOPEN:<net_state> 
OK 
ERROR 
+IP ERROR: <err_info> 
ERROR 
+CME ERROR: <err> 
Execution Command 
Responses 
AT+NETOPEN 
OK 
+NETOPEN: <err> 
+NETOPEN: <err> 
OK 
+NETOPEN: <err> 
ERROR 
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+IP ERROR: <err_info> 
ERROR 
ERROR 
Defined values 
<net_state> 
a numeric parameter that indicates the state of PDP context activation: 
0   network close (deactivated) 
1   network open(activated) 
<err > 
The result of operation, 0 is success, other value is failure. 
<err_info> 
A string parameter that displays the cause of occurring error. 
Examples 
AT+NETOPEN 
OK 
+NETOPEN: 0 
AT+NETOPEN? 
+NETOPEN: 1, 1 
OK 
15.2.8  AT+NETCLOSE  Close socket 
Description   
This command 
closes network. Before calling this command, all opened sockets must be closed 
first. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+NETCLOSE=? OK 
ERROR 
Execution Command  Responses 
AT+NETCLOSE OK 
+NETCLOSE: <err> 
+NETCLOSE: <err> 
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OK 
+NETCLOSE: <err> 
ERROR 
+IP ERROR: <error message> 
ERROR 
ERROR 
Defined values 
<err> 
The result of operation, 0 is success, other value is failure.   
<error message> 
The list of all error message: 
Invalid parameter 
Operation not supported 
No data 
Examples 
AT+NETCLOSE 
OK 
+NETCLOSE: 0 
15.2.9  AT+IPADDR    Inquire socket PDP address 
Description 
This command inquires the IP address of current active socket PDP. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+IPADDR=? 
OK 
ERROR 
Execution Command
 Responses 
AT+IPADDR +IPADDR: < ip_address> 
OK 
+IP ERROR:<err_info> 
ERROR 
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ERROR 
Defined values 
<ip_address> 
A string parameter that identifies the IP address of current active socket PDP. 
<err_info> 
A string parameter that displays the cause of occurring error. 
Examples 
AT + I PA D D R  
+IPADDR: 10.71.155.118 
OK 
15.2.10 AT+CIPFILTERSET    IP filter configuration 
Description   
This command is used to enable the IP filter feature in the multi-PDP mode. The IP filter is a 
feature which to support embedded TCP/IP protocol applications while the mobile device is in a 
PPP call.  
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+CIPFILTERSET=? +CIPFILTERSET: (0-9),(0,1) 
OK 
ERROR 
Read Command 
Responses 
AT+CIPFILTERSET? +CIPFILTERSET: <enabled_flag> 
+CIPFILTERSET: 0,<enabled_flag> 
+CIPFILTERSET: 1,<enabled_flag> 
… 
OK 
Write Command 
Responses 
AT+CIPFILTERSET=<link_
num>,<enabled_flag> 
OK 
If ERROR occurred 
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Or 
AT+CIPFILTERSET=<enab
led_flag> 
+IP ERROR: <error message> 
ERROR 
Defined values 
<link_num> 
A numeric parameter that identifies a connection. The range of permitted values is 0 to 9. This 
parameter is used for multi clients. 
<enabled_flag> 
A numeric flag parameter that show the <link_num
> connection whether or not to use the IP 
filter feature. The default value is 0. 
0: disable the IP filter feature. 
1: enable the IP filter feature. 
NOTE:   
1. The execution command must be executed before opening network. 
2. If you want to use the PPP dial and socket data at the same time, set the IP filter flag 
enabled. In this usage, the PPP dial operation must be executed before the socket command. 
Examples 
AT+CIPFILTERSET=? 
+CIPFILTERSET: (0-9),(0,1) 
OK 
AT+CIPFILTERSET =0,1 
OK 
AT+CIPFILTERSET =1 
OK 
AT+CIPFILTERSET? 
+CIPFILTERSET: 1 
+CIPFILTERSET: 0,1 
+CIPFILTERSET: 1,0 
+CIPFILTERSET: 2,0 
+CIPFILTERSET: 3,0 
+CIPFILTERSET: 4,0 
+CIPFILTERSET: 5,0 
+CIPFILTERSET: 6,0 
+CIPFILTERSET: 7,0 
+CIPFILTERSET: 8,0 
+CIPFILTERSET: 9,0 
OK 
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15.2.11 AT+SERVERSTART  Startup TCP server 
Description   
This command 
starts up TCP server, and the server can receive the request of TCP client. After the 
command executes successfully, an unsolicited result code is returned when a client tries to connect 
with module and module accepts request. The unsolicited result code is +CLIENT:  < 
link_num >,<server_index>,<client_IP>:<port>. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+ SERVERSTART=?  OK 
+SERVERSTART: (list of supported <port>), (list of supported < 
server_index >) 
OK 
ERROR 
Read Command  Responses 
AT+SERVERSTART?  [+SERVERSTART: <server_index>,< port > 
…] 
OK 
+CIPERROR: <err> 
ERROR 
ERROR 
+IP ERROR: <error message> 
ERROR 
Write Command  Responses 
AT+ SERVERSTART=<port
>,<server_index>[,<backlog
>] 
OK 
+CIPERROR: <err> 
ERROR 
ERROR 
Defined values 
<server_index> 
The TCP server index(The range of permitted values is 0 to 3).   
<backlog> 
The maximum connections can be queued in listen queue. The range is from 1 to 3. Default is 3. 
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<err> 
The result of operation, 0 is success, other value is failure. 
<error message> 
The list of all error message: 
Invalid parameter 
Operation not supported 
No data 
Examples 
AT+SERVERSTART?   
+SERVERSTART: 0, 1000 
+SERVERSTART: 2, 2000 
OK 
15.2.12 AT+SERVERSTOP  Stop TCP server 
Description   
This command 
stops TCP server. Before stopping a TCP server, all sockets with <server_index> 
equals to the closing TCP server index must be closed first. 
SIM PIN  References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+ SERVERSTOP=? OK 
ERROR 
Execution Command  Responses 
AT+SERVERSTOP=<server
_index> 
+SERVERSTOP: <server_index>,<err> 
OK 
OK 
+SERVERSTOP: <server_index>,<err> 
+SERVERSTOP: <server_index>,<err> 
ERROR 
ERROR 
Defined values 
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<server_index> 
The TCP server index(The range of permitted values is 0 to 3).   
<err> 
The result of operation, 0 is success, other value is failure. 
Examples 
AT+SERVERSTOP=? 
OK 
AT+SERVERSTOP=0 
+SERVERSTOP: 0,0 
OK 
15.2.13 AT+CIPOPEN    Establish connection in multi-socket mode 
Description 
 This command is used to establish a connection with TCP server and UDP server, The sum of 
all of connections is 10。 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+ CIPOPEN=? +CIPOPEN: (list of supported <link_num>
s), (list of supported 
<type>s) 
OK 
ERROR 
Read Command  Responses 
AT+ CIPOPEN?  +CIPOPEN: <link_num> [,<type>,<serverIP>,<serverPort>,<index>] 
+CIPOPEN: <link_num> [,<type>,<serverIP>,<serverPort>,<index>] 
[…] 
OK 
ERROR 
+IP ERROR: <error message> 
ERROR 
Write Command  Responses 
AT+ CIPOPEN=  OK 
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<link_num>,”TCP”,<serve
rIP>,<serverPort>[,<localP
ort>] 
+CIPOPEN: <link_num>,<err> 
Open connection successfully in transparent mode: 
CONNECT [<text>] 
Open connection failed in transparent mode: 
CONNECT FAIL 
+CIPOPEN: <link_num>,<err> 
ERROR 
ERROR 
AT+ CIPOPEN= 
<link_num>,”UDP”,,,<loc
alPort> 
+CIPOPEN: <link_num>,<err> 
OK(if udp open) 
+CIPOPEN: <link_num>,<err> 
ERROR 
ERROR 
Defined values 
<link_num> 
a numeric parameter that identifies a connection. The range of permitted values is 0 to 9. If 
AT+CIPMODE=1 is set, the <link_num> is restricted to be only 0. 
<type> 
a string parameter that identifies the type of transmission protocol. 
TCP    Transfer Control Protocol 
UDP    User Datagram Protocol 
If AT+CIPMODE=1 is set, the <type> is restricted to be only “TCP”. 
<serverIP> 
A  string parameter that identifies the IP address of server.
The IP address format consists of 4 
octets,separated by decimal point:”AAA.BBB.CCC.DDD”. 
Also the domain name is supported 
here. If the domain name is input he
re, the timeout value for the AT+CIPOPEN shall be decided by 
AT+CIPDNSSET. 
<serverPort> 
a numeric parameter that identifies the port of TCP server, the range of permitted values is 0 to 
65535. 
NOTE: When open port as TCP, the port must be the opened TCP port; 
When open port as UDP, the port may be any port. 
But, for Qualcomm, connecting the port 0 is as an invalid operation. 
<localPort> 
a numeric parameter that identifies the port of local socket, the range of permitted values is 0 to 
65535. 
<index> 
a numeric parameter that identifies the server index that the client linked when as a TCP server. 
-1    Not as a TCP server 
0-3    TCP server index 
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<text> 
CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command. 
<err> 
The result of operation, 0 is success, other value is failure. 
<error message> 
The list of all error message: 
Invalid parameter 
Operation not supported 
No data 
Examples 
AT+CIPOPEN=0,”TCP”,”116.228.221.51”,100 
OK 
+CIPOPEN: 0,0 
AT+CIPOPEN=1,”UDP”,,,8080 
+CIPOPEN: 0,0 
OK 
AT+CIPOPEN=? 
+CIPOPEN: (0-9), (“TCP”, “UDP”) 
OK 
AT+CIPOPEN? 
+CIPOPEN: 0, “TCP”, “116.228.221.51”, 100, -1 
+CIPOPEN: 1 
+CIPOPEN: 2 
+CIPOPEN: 3 
+CIPOPEN: 4 
+CIPOPEN: 5 
+CIPOPEN: 6 
+CIPOPEN: 7 
+CIPOPEN: 8 
+CIPOPEN: 9 
OK 
15.2.14 AT+CIPSEND    Send data through TCP or UDP connection   
Description   
This command 
is used to send data to remote side. The <length> field can be empty, when it is 
empty,  Each <Ctrl+Z> character present in the data should 
be coded as <ETX><Ctrl+Z>. Each 
<ESC> character present in the data should be coded as <ETX><ESC>. Each <ETX> character will 
be coded as <ETX><ETX>. Single <Ctrl+Z> means end of the input data. Single <ESC> is used to 
cancel the sending. 
<ETX> is 0x03, and <Ctrl+Z> is 0x1A, <ESC> is 0x1B. 
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SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+ CIPSEND=? +CIPSEND: (list of supported <link_num>s), (list of supported <
length >s) 
OK 
+CIPERROR: <err> 
ERROR 
ERROR 
Read Command  Responses 
AT+CIPSEND? OK 
ERROR 
Write Command  Responses 
AT+ CIPSEND=<link_num>,
[<length>]<CR>
data for 
send   
(If the <length> field is 
empty, the <ctrl+z> needs to 
be entered after all data is 
input. <ESC> is use to 
cancel the sending.) 
(This format is for TCP 
connect) 
OK 
+CIPSEND: <link_num>,<reqSendLength>, <cnfSendLength> 
+CIPERROR: <err> 
ERROR 
ERROR 
AT+ CIPSEND=<link_num>,
[<length>],<serverIP>,<serv
erPort><CR>data for send   
(If the <length> field is 
empty, the <ctrl+z> needs to 
be entered after all data is 
input. <ESC> is use to 
cancel the sending.) 
(This format is for UDP 
connect) 
If sending successfully(udp sending): 
OK 
+CIPSEND: <link_num>, <reqSendLength>, <cnfSendLength> 
+CIPERROR: <err> 
ERROR 
ERROR 
Defined values 
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<link_num> 
a numeric parameter that identifies a connection. The range of permitted values is 0 to 9. 
<length> 
a numeric parameter which indicates the length of sending data, it must be between1 and 1500. 
<serverIP> 
A  string parameter that identifies the IP address of server.
The IP address format consists of 4 
octets,separated by decimal point:”AAA.BBB.CCC.DDD”. 
<serverPort> 
a numeric parameter that identifies the port of TCP server, the range of permitted values is 0 to 
65535. 
NOTE: When open port as TCP, the port must be the opened TCP port; 
When open port as UDP, the port may be any port. 
But, for Qualcomm, connecting the port 0 is as an invalid operation. 
<reqSendLength> 
a numeric parameter that requested number of data bytes to be transmitted. 
<cnfSendLength> 
a numeric parameter that confirmed number of data bytes to be transmitted. 
-1     the connection is disconnected. 
0        own send buffer or other side’s congestion window are full. 
Note: If the <cnfSendLength> is not equal to the <reqSendLength>, the socket then cannot be used 
further. 
<err_info> 
A string parameter that displays the cause of occurring error. 
Examples 
AT+CIPSEND=0,1 
> S 
OK 
+CIPSEND: 0, 1, 1 
AT+CIPSEND=1,1,”116.236.221.75”,6775 
> S 
OK 
+CIPSEND: 1, 1, 1 
AT+CIPSEND=2, 
>Hello<Ctrl+Z> 
OK 
+CIPSEND: 2,5,5 
AT+CIPSEND=3,,”116.236.221.75”,6775 
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>Hello World<Ctrl+Z> 
OK 
+CIPSEND: 2,11,11 
AT+CIPSEND=2, 
>Hello<ESC> 
ERROR 
AT+CIPSEND=? 
+CIPSEND: (0-9), (1-1500) 
OK 
15.2.15 AT+CIPRXGET    Get the network data manually 
Description   
This command is used to get the network data manually. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+CIPRXGET=? +CIPRXGET: (0-4),(0-9),(1-1500) 
OK 
ERROR 
Read Command  Responses 
AT+CIPRXGET? +CIPRXGET: <mode> 
OK 
ERROR 
Execution Command Responses 
 (AT+CIPRXGET=1): 
AT+CIPRXGET=<mode>,<
cid>[,<len>] 
1. If <mode> = 0 or 1: 
OK 
2. If <mode> = 2 or 3: 
 +CIPRXGET: <mode>,<cid>,<read_len>,<rest_len> 
<data> 
OK 
3. If<mode> = 4: 
+CIPRXGET: 4,<cid>,<rest_len> 
OK 
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If ERROR occurred 
ERROR 
+IP ERROR: <error message> 
ERROR 
Defined values 
<mode> 
0  –  set the way to get the network data automatically 
1  –  set the way to get the network data manually 
2  –  read data, the max read length is 1500 
3  –  read data in HEX form, the max read length is 750 
4  –  get the rest data length 
<cid> 
A numeric parameter that identifies a connection. The range of permitted values is 0 to 9. 
<len> 
The data length to be read. 
Not required, the default value is 1500 when <mode>=2, and 750 when <mode>=3. 
<read_len> 
The length of the data that have read. 
<rest_len> 
The data length which not read in the buffer. 
< data > 
The read data. 
<error message> 
The list of all error message: 
Invalid parameter 
Operation not supported 
No data 
NOTE:   
1. When <mode> is set to 1 and the 2-4 mode will take effect. 
2. If AT+CIPRXGET=1, it will report +CIPRXGET: 1,<cid>(multi client) when 
received data and the buffer is empty.   
Examples 
AT+CIPRXGET=? 
+CIPRXGET: (0-4),(1-1500) 
OK 
AT+CIPRXGET? 
+CIPRXGET: 1 
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OK 
AT+CIPRXGET=1 
OK 
AT+CIPRXGET=2,100 
+CIPRXGET: 2,100,1300 
01234567890123456789012345678901234567890123456789012345678901234567890123456789
01234567890123456789 
OK 
AT+CIPRXGET=3,100 
+CIPRXGET: 3,100,1200 
30313233343536373839303132333435363738393031323334353637383930313233343536373839
30313233343536373839303132333435363738393031323334353637383930313233343536373839
3031323334353637383930313233343536373839 
OK 
AT+CIPRXGET=4 
+CIPRXGET: 4,1200 
OK 
AT+CIPRXGET=2,0,100 
+CIPRXGET: 2,0,100,1300 
01234567890123456789012345678901234567890123456789012345678901234567890123456789
01234567890123456789 
OK 
AT+CIPRXGET=3,0,100 
+CIPRXGET: 3,0,100,1200 
30313233343536373839303132333435363738393031323334353637383930313233343536373839
30313233343536373839303132333435363738393031323334353637383930313233343536373839
3031323334353637383930313233343536373839 
OK 
AT+CIPRXGET=4,0 
+CIPRXGET: 4,0,1200 
OK 
15.2.16 AT+CIPCLOSE    Close TCP or UDP socket 
Description 
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This command is used to close TCP or UDP socket. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+ CIPCLOSE=? +CIPCLOSE: (list of supported <link_num>s) 
OK 
ERROR 
Read Command Responses 
AT+ CIPCLOSE?  +CIPCLOSE:<link0_state>,<link1_state>,<link2_state>, 
<link3_state>,<link4_state>,<link5_state>,<link6_state>, 
<link7_state>,<link8_state>,<link9_state> 
OK 
+CIPCLOSE: <link_num>,<err> 
ERROR 
ERROR 
Write Command  Responses 
AT+ CIPCLOSE= 
<link_num> 
OK 
+CIPCLOSE: <link_num>,<err> 
+CIPCLOSE: <link_num>,<err> 
OK 
+CIPCLOSE: <link_num>,<err> 
ERROR 
ERROR 
Defined values 
<link_num> 
a numeric parameter that identifies a connection. The range of permitted values is 0 to 9. 
<linkx_state> 
a numeric parameter that identifies state of <link_num>. the range of permitted values is 0 to 1. 
   0   disconnected 
   1   connected 
<err_info> 
A string parameter that displays the cause of occurring error. 
Examples 
AT+CIPCLOSE? 
+CIPCLOSE: 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 
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OK 
AT+CIPCLOSE=? 
+CIPCLOSE: (0-9) 
OK 
AT+CIPCLOSE=0 
OK 
+CIPCLOSE: 0,0 
15.2.17 AT+CIPSTAT    Inquire the total size of data sent or received 
Description   
This command is used to inquire the total size of data sent or received for a socket in multiple 
socket modes (Only valid for client TCP socket mode). 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CIPSTAT=? +CIPSTAT: (list of supported <link_num>s) 
OK 
Write Command 
Responses 
AT+CIPSTAT=<link_num> +CIPSTAT: <sent_size>, <recv_size> 
OK 
+IP ERROR: <err_info> 
ERROR 
Defined values 
< link_num> 
a numeric parameter that identifies a connection. The range of permitted values is 0 to 9. 
<sent_size> 
Total size of sent data. 
<recv_size> 
Total size of received data. 
<err_info> 
A string parameter that displays the cause of occurring error. 
Examples 
AT+CIPSTAT=0 
+CIPSTAT: 10, 20 
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OK 
AT+CIPSTAT=? 
+CIPSTAT: (0-9) 
OK 
15.2.18 Information elements related to TCP/IP 
The following table lists information elements which may be reported.   
Information 
Description 
+CIPEVENT: NETWORK CLOSED 
UNEXPECTEDLY 
Network is closed for network error(Out 
of service, etc). When this event happens, 
user’
s application needs to check and 
close all opened sockets, and then uses 
AT+NETCLOSE to release the network 
library if AT+NETOPEN? shows the 
network library is still opened. 
+IPCLOSE: <client_index>, <close_reason> Socket is closed passively. 
<client_index> is the link number. 
<close_reason>: 
0 - Closed by local, active 
1 - Closed by remote, passive 
2 - Closed for sending timeout 
+CLIENT:  < 
link_num >,<server_index>,<client_IP>:<port> 
TCP server accepted a new socket client, 
the index is 
<link_num>, the TCP server 
index is <server_index>. The peer IP 
address is <client_IP>, the peer port is 
<port>. 
15.2.19 Unsolicited TCP/IP command <err> Codes 
0 
operation succeeded 
1  Network failure 
2  Network not opened 
3  Wrong parameter 
4 
Operation not supported 
5  Failed to create socket 
6 
Failed to bind socket 
7  TCP server is already listening 
8  Busy 
9 
Sockets opened 
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10 
Timeout 
11  DNS parse failed for AT+CIPOPEN 
255  Unknown error 
15.3  FTP 
15.3.1  AT+CFTPPORT    Set FTP server port 
Description 
This command is used to set FTP server port. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+CFTPPORT=? +CFTPPORT: (list of supported <port>s) 
OK 
Read Command 
Responses 
AT+ C FTPPORT? +CFTPPORT: <port> 
OK 
Write Command  Responses 
AT+CFTPPORT=<port> OK 
+CME ERROR 
Defined values 
<port> 
The FTP server port, from 1 to 65535, and default value is 21. 
Examples 
AT+CFTPPORT=21 
OK 
AT+CFTPPORT? 
+CFTPPORT:21 
OK 
AT+CFTPPORT=? 
+CFTPPORT: (1-65535) 
OK 
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15.3.2  AT+CFTPMODE  Set FTP mode 
Description   
This command is used to set FTP passive/proactive mode. Default is proactive mode. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+CFTPMODE=?  +CFTPMODE: (list of supported <mode>s) 
OK 
Read Command  Responses 
AT+ CFTPMODE?  +CFTPMODE: <mode> 
OK 
Write Command  Responses 
AT+CFTPMODE=<mode> 
OK 
+CME ERROR 
Defined values 
<mode> 
The FTP access mode:   
0 –   passive mode. 
1 –   proactive mode. 
Examples 
AT+CFTPMODE=1 
OK 
AT+CFTPMODE? 
+CFTPMODE: 1 
OK 
AT+CFTPMODE=? 
+CFTPMODE: (0,1) 
OK 
15.3.3  AT+CFTPTYPE  Set FTP type 
Description 
This command is used to set FTP type. Default is binary type. 
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SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CFTPTYPE=?  +CFTPTYPE: (list of supported <type>s) 
OK 
Read Command  Responses 
AT+ CFTPTYPE?  +CFTPTYPE: <type> 
OK 
Write Command 
Responses 
AT+CFTPTYPE=<type> OK 
+CME ERROR 
Defined values 
<type> 
The FTP type: 
I   –   binary type. 
A   –   ASCII type. 
Examples 
AT+CFTPTYPE=A 
OK 
AT+CFTPTYPE? 
+CFTPTYPE: A 
OK 
AT+CFTPTYPE=? 
+CFTPTYPE: (A,I) 
OK 
15.3.4  AT+CFTPSERV    Set FTP server domain name or IP address 
Description   
This command is used to set FTP server domain name or IP address. 
SIM PIN References 
YES  Vendor 
Syntax 
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Test Command 
Responses 
AT+CFTPSERV=?  +CFTPSERV: “ADDRESS” 
OK 
Read Command 
Responses 
AT+ CFTPSERV?  +CFTPSERV: ”<address>” 
OK 
Write Command  Responses 
AT+CFTPSERV= 
”<address>” 
OK 
+CME ERROR 
Defined values 
<address> 
The FTP server domain name or IP address. The maximum length is 100. 
Examples 
AT+CFTPSERV=”www.mydomain.com” 
OK 
AT+CFTPSERV? 
+CFTPSERV: “www.mydomain.com” 
OK 
AT+CFTPSERV=? 
+CFTPSERV: ”ADDRESS” 
OK 
AT+CFTPSERV=”10.0.0.127” 
OK 
15.3.5  AT+CFTPUN    Set user name for FTP access 
Description   
This command is used to set user name for FTP server access. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CFTPUN=?  +CFTPUN: “NAME” 
OK 
Read Command  Responses 
AT+ CFTPUN?  +CFTPUN: “<name>
”
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OK 
Write Command Responses 
AT+CFTPUN=“<name>”  OK 
+CME ERROR 
Defined values 
<name> 
The user name for FTP server access. The maximum length is 30. 
Examples 
AT+CFTPUN=”myname” 
OK 
AT+CFTPUN=”anonymous” 
OK 
AT+CFTPUN? 
+CFTPUN: “myname” 
OK 
AT+CFTPUN=? 
+CFTPUN: ”NAME” 
OK 
15.3.6  AT+CFTPPW  Set user password for FTP access 
Description   
This command is used to set user password for FTP server access. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CFTPPW=?  +CFTPPW: “PASSWORD” 
OK 
Read Command  Responses 
AT+ CFTPPW? 
+CFTPPW: “<password>” 
OK 
Write Command 
Responses 
AT+CFTPPW=“<password>
” 
OK 
+CME ERROR 
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Defined values 
<password> 
The user password for FTP server access. The maximum length is 40. 
Examples 
AT+CFTPPW=”mypass” 
OK 
AT+CFTPPW? 
+CFTPPW: “mypass” 
OK 
AT+CFTPPW=? 
+CFTPPW: ”mypass” 
OK 
15.3.7  AT+CFTPGETFILE    Get a file from FTP server to EFS 
Description   
This command is used to download a file from FTP server to module EFS. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CFTPGETFILE=?  +CFTPGETFILE:  [{non-ascii}]“FI LE PATH ”, (
list of supported 
<dir>s) [, (list of supported <rest_size>s)] 
OK 
Write Command 
Responses 
AT+CFTPGETFILE= 
“<filepath>”,<dir>[,<rest_siz
e>] 
OK 
+CFTPGETFILE: 0 
+CME ERROR 
OK 
+CFTPGETFILE: <err> 
Defined values 
<filepath> 
The remote file path. When the file path doesn’t contain ”/”, this command transfers file from the 
current remote FTP directory. If the file path contains non-ASCII characters, the file path parameter 
should contain a prefix of {non-ascii}. 
<dir> 
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The directory to save the downloaded file: 
0  –  current directory [refer to AT+FSCD] 
<rest_size> 
The value for FTP “REST” command which is used for broken transfer when transferring failed last 
time.    The range is from 0 to 2147483647. 
<err> 
The error code of FTP operation. 
Examples 
AT+CFTPGETFILE=”/pub/mydir/test1.txt”,0 
OK 
… 
+CFTPGETFILE: 0 
AT+CFTPGETFILE=” test2.txt”,0 
OK 
… 
+CFTPGETFILE: 0 
AT+CFTPGETFILE={non-ascii}” B2E2CAD42E747874”,0 
OK 
… 
+CFTPGETFILE: 0 
15.3.8  AT+CFTPPUTFILE    Upload a file from module EFS to FTP server 
Description   
This command is used to upload a file from the module EFS to FTP server. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CFTPPUTFILE=? 
+CFTPPUTFILE:  [{non-ascii}]  “FI LE PATH ”, (list of supported 
<dir>s)[, (list of supported <rest_size>s)] 
OK 
Write Command  Responses 
AT+CFTPPUTFILE=“<filep
ath>”,<dir>[,<rest_size>] 
OK 
+CFTPPUTFILE: 0 
+CME ERROR 
OK 
+CFTPPUTFILE: <err> 
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Defined values 
<filepath> 
The remote file path. When the file path doesn’t contain “/”
, this command transfers file to the 
current remote FTP directory. If the file path contains non-ASCII characters, the file path parameter 
should contain a prefix of {non-ascii}. 
<dir> 
The directory that contains the file to be uploaded: 
0  –  current directory [refer to AT+FSCD] 
<rest_size> 
The value for FTP “REST” command which is used for broken transfer when transferring failed last 
time.    The range is from 0 to 2147483647. 
<err> 
The error code of FTP operation. 
Examples 
AT+CFTPPUTFILE=”/pub/mydir/test1.txt”,0, 10 
OK 
+CFTPPUTFILE: 0 
AT+CFTPPUTFILE=” test2.txt”,0 
OK 
… 
+CFTPPUTFILE: 0 
AT+CFTPPUTFILE={non-ascii}” B2E2CAD42E747874”,0 
OK 
… 
+CFTPPUTFILE: 0 
15.3.9  AT+CFTPGET  Get a file from FTP server and output it to SIO 
Description   
This command is used to get a file from FTP server and output it to serial port.    This command 
may have a lot of DATA transferr
ed to DTE using serial port, The AT+CATR command is 
recommended to be used. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CFTPGET=?  +CFTPGET:  [{non-ascii}]“F I LE PAT H ”[,(
list of supported 
<rest_size>s)] [,(list of supported <using_cache>s)] 
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OK 
Write Command  Responses 
AT+CFTPGET=“<filepath>
”[,<rest_size>[,<using_cache
>]] 
If the <using_cache> is 0 (default): 
OK 
+CFTPGET: DATA,<len> 
… 
+CFTPGET: DATA, <len> 
… 
… 
+CFTPGET: 0 
If the <using_cache> is 1: 
OK 
+CFTP: RECV EVENT 
AT+CFTPCACHERD? 
+CFTPCACHERD: 102400 
OK 
//output cached data now: 
AT+CFTPCACHERD 
+CFTPGET: DATA,<len> 
… 
OK 
...... 
+CFTPGET: 0 
+CFTPGET: <err> 
ERROR 
ERROR 
OK 
[+CFTPGET: DATA, <len> 
… 
+CFTPGET: DATA, <len> 
… 
…] 
+CFTPGET: <err> 
Defined values 
<filepath> 
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The remote file path. When the file path doesn’t contain ”/”, this command transfer file from the 
current remote FTP directory. If the file path contains non-ASCII characters, the file path parameter 
should contain a prefix of {non-ascii}. 
<rest_size> 
The value for FTP “REST” command which is used for broken transfer when transferring failed last 
time. The range is from 0 to 2147483647. 
<len> 
The length of FTP data contained in this packet. 
<err> 
The error code of FTP operation. 
<using_cache> 
    0  –  Do not use cache 
  1  –  Use cache(Data will be output using AT+CFTPCACHERD command) 
Examples 
AT+CFTPGET=”/pub/mydir/test1.txt”, 10 
OK 
+CFTPGET: DATA, 1020, 
… 
+CFTPGET: DATA, 1058, 
… 
… 
+CFTPGET: 0 
AT+CFTPGET={non-ascii}”/2F74657374646972/B2E2CAD42E747874” 
OK 
+CFTPGET: DATA, 1020, 
… 
+CFTPGET: 0 
AT+CFTPGET=? 
+CFTPGET: [{non-ascii}]“F I L E PA T H ” [,(0-2147483647)] 
OK 
15.3.10  AT+CFTPPUT    Upload the DATA from SIO to FTP server 
Description   
This command is used to upload the DATA from serial port to FTP server as a file . Each <Ctrl+Z> 
character present in the data flow of 
serial port when downloading FTP data will be coded as 
<ETX><Ctrl+Z>. Each <ETX> character will be coded as <ETX><ETX>. Single <Ctrl+Z> means 
end of the FTP data. 
<ETX> is 0x03, and <Ctrl+Z> is 0x1A. 
SIM PIN References 
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YES 
Vendor 
Syntax 
Test Command Responses 
AT+CFTPPUT=?  +CFTPPUT: [{non-ascii}]  “FILEPATH”  [,  (
list of supported 
<rest_size>s)] 
OK 
Execution Command  Responses 
AT+CFTPPUT=“<filepath>” 
[,<rest_size>] 
+CFTPPUT: BEGIN 
OK 
+CME ERROR 
[+CFTPPUT: BEGIN] 
+CFTPPUT: <err_code> 
ERROR 
Defined values 
<filepath> 
The remote file path. When the file path doesn’t contain “/”
, this command transfers file to the 
current remote FTP directory. If the file path contains non-ASCII characters, the file path parameter 
should contain a prefix of {non-ascii}. 
<rest_size> 
The value for FTP “REST” command which is used for broken transfer when transferring failed last 
time. The range is from 0 to 2147483647. 
<err_code> 
Refer to “Unsolicited FTP Codes”. 
Examples 
AT+CFTPPUT=”/pub/mydir/test1.txt”, 20 
+CFTPPUT: BEGIN 
…..<Ctrl+Z> 
OK 
AT+CFTPPUT={non-ascii}”/2F74657374646972/B2E2CAD42E747874” 
+CFTPPUT: BEGIN 
…..<Ctrl+Z> 
OK 
AT+CFTPPUT=? 
+CFTPPUT: [{non-ascii}]“F I L E PA T H ” [,(0-2147483647)] 
OK 
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15.3.11  AT+CFTPLIST  List the items in the directory on FTP server 
Description 
This command is used to list the items in the specified directory on FTP server 
SIM PIN References 
YES 
Vendor 
Syntax 
Test Command  Responses 
AT+CFTPLIST=?  +CFTPLIST: [{non-ascii}]“F I LE PAT H ”[,(
list of supported 
<using_cache>s)] 
OK 
Write Command 
Responses 
AT+CFTPLIST=”<dir>”[,<u
sing_cache>] 
If the <using_cache> is 0 (default): 
OK 
+CFTPLIST: DATA,<len> 
… 
+CFTPLIST:<err> 
If the <using_cache> is 1: 
OK 
+CFTP: RECV EVENT 
AT+CFTPCACHERD? 
+CFTPCACHERD: 102400 
OK 
//output cached data now 
AT+CFTPCACHERD 
+CFTPLIST: DATA,<len> 
… 
OK 
...... 
+CFTPLIST: <err> 
ERROR 
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Defined values 
<dir> 
The directory to be listed. If the directory contains non-
ASCII characters, the <dir> parameter 
should contain a prefix of {non-ascii}. 
<len> 
The length of data reported 
<err> 
The result code of the listing 
<using_cache> 
    0  –  Do not use cache 
  1  –  Use cache(Data will be output using AT+CFTPCACHERD command) 
Examples 
AT+CFTPLIST=”/testd” 
OK 
+CFTPLIST: DATA,193 
drw-rw-rw-   1 user     group           0 Sep  1 18:01 . 
drw-rw-rw-   1 user     group           0 Sep  1 18:01 .. 
-rw-rw-rw-   1 user     group        2017 Sep  1 17:24 19800106_000128.jpg 
+CFTPLIST: 0 
15.3.12  AT+CFTPMKD    Create a new directory on FTP server 
Description   
This command is used to create a new directory on the FTP server. The maximum length of the 
full path name is 256. 
SIM PIN References 
YES 
Vendor 
Syntax 
Test Command  Responses 
AT+CFTPMKD=? +CFTPMKD: [{non-ascii}]”DIR” 
OK 
Write Command  Responses 
AT+CFTPMKD=”<dir>”  OK 
+CFTPMKD:<err> 
ERROR 
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Defined values 
<dir> 
The directory to be created. If the directory contains non-
ASCII characters, the <dir> parameter 
should contain a prefix of {non-ascii}. 
<err> 
The result code of the command 
Examples 
AT+CFTPMKD=”/testdir” 
OK 
AT+CFTPMKD={non-ascii}”74657374646972” 
OK 
15.3.13  AT+CFTPRMD  Delete a directory on FTP server 
Description   
This command is used to delete a directory on FTP server
SIM PIN References 
YES Vendor 
Syntax 
Test Command  Responses 
AT+CFTPRMD=? +CFTPRMD: [{non-ascii}]”DIR” 
OK 
Write Command  Responses 
AT+CFTPRMD=”<dir>”  OK 
+CFTPRMD:<err> 
ERROR 
Defined values 
<dir> 
The directory to be removed. If the directory contains non-ASCII characters, the <dir> parameter 
should contain a prefix of {non-ascii}. 
<err> 
The result code of the command 
Examples 
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AT+CFTPRMD=”/testdir” 
OK 
AT+CFTPRMD={non-ascii}”74657374646972” 
OK 
15.3.14  AT+CFTPDELE  Delete a file on FTP server 
Description   
This command is used to delete a file on FTP server 
SIM PIN References 
YES Vendor 
Syntax 
Test Command 
Responses 
AT+CFTPDELE=? +CFTPDELE: [{non-ascii}]”FILENAME” 
OK 
Write Command  Responses 
AT+CFTPDELE=”<filenam
e>” 
OK 
+CFTPDELE:<err> 
ERROR 
Defined values 
<filename> 
The name of the file to be deleted. If the file name contains non-ASCII characters, the <filename> 
parameter should contain a prefix of {non-ascii}. 
<err> 
The result code of the command 
Examples 
AT+CFTPDELE=”test” 
OK 
AT+CFTPDELE={non-ascii}”74657374” 
OK 
15.3.15  AT+CFTPCACHERD  Output cached data to MCU   
Description   
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This command is used to output 
cached data (generated by AT+CFTPGET/AT+CFTPLIST) to 
MCU.   
SIM PIN References 
YES  Vendor 
Syntax 
Read Command  Responses 
AT+CFTPCACHERD?  +CFTPCACHERD: <len> 
OK 
Execute Command  Responses 
AT+CFTPCACHERD 
If cache data is AT+CFTPGET: 
[+CFTPGET: DATA,<out_len><CR><LF>] 
[…] 
OK 
If the cache data is AT+CFTPLIST: 
[+CFTPLIST: DATA,<out_len><CR><LF>] 
[…] 
OK 
ERROR 
Defined values 
<len> 
The bytes of data cached in FTP module. 
<out_len> 
The bytes of data to output. The maximum value is 1024 for each AT+CFTPCACHERD calling. 
Examples 
AT+CFTPCACHERD? 
+CFTPCACHERD: 102400 
OK 
AT+CFTPCACHERD 
+CFTPGET: DATA, 1024 
…
OK 
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15.3.16  Unsolicited FTP Codes (Summary of CME ERROR Codes) 
Code of <err> 
Description 
201  Unknown error for FTP 
202  FTP task is busy 
203  Failed to resolve server address 
204  FTP timeout 
205  Failed to read file 
206  Failed to write file 
207  Not allowed in current state 
208 
Failed to login 
209  Failed to logout 
210  Failed to transfer data 
211  FTP command rejected by server 
212  Memory error 
213 
Invalid parameter 
214  Network error 
215  Failed to connect socket 
216  Failed to send data using socket 
217  Failed to receive data using socket 
218 
Failed to verify user name and password 
219  Socket connect timeout 
15.4   HTTP   
15.4.1  AT+CHTTPACT   Launch a HTTP operation 
Description   
This command is used to launch a HTTP operation like GET or POST. Each <Ctrl+Z> character 
presented in the data flow of serial port will be coded as <ETX><Ctrl+Z>. Each <ETX> character 
will be coded as <ETX><ETX>. Single <Ctrl+Z> means end of the HTTP request data or end of 
the HTTP responded data. 
<ETX> is 0x03, and <Ctrl+Z> is 0x1A. 
For this command there may be a lot of DATA which need to be transferred to DTE using serial 
port, it is recommended that the AT+CATR will be used. 
NOTE: For HTTP/HTTPS operation, The “Secure Hyper Text Transfer Protocol Service” chapter 
AT set is recommended to be used. The AT+CHTTPACT is only used to support old HTTP 
application. 
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SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CHTTPACT=?  +CHTTPACT: “ADDRESS”, (1-65535) 
OK 
Write Command  Responses 
AT+CHTTPACT= 
“<address>”,<port> 
+CHTTPACT: REQUEST 
+CHTTPACT: DATA, <len> 
… 
+CHTTPACT: DATA, <len> 
… 
… 
+CHTTPACT: 0 
+CME ERROR 
+CHTTPACT: <err> 
ERROR 
+CHTTPACT: REQUEST 
+CHTTPACT: <err> 
ERROR 
+CHTTPACT: REQUEST 
+CHTTPACT: DATA, <len> 
… 
+CHTTPACT: DATA, <len> 
… 
… 
+CHTTPACT: <err>   
ERROR 
Defined values 
<address> 
The HTTP server domain name or IP address. 
<port> 
The HTTP server port. 
<len> 
The length of HTTP data in the packet. 
<err> 
The error code of HTTP operation. 
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Examples 
AT+CHTTPACT=”www.mywebsite.com”,80 
+CHTTPACT: REQUEST 
GET http://www.mywebsite.com/index.html HTTP/1.1 
Host: www.mywebsite.com 
User-Agent: MY WEB AGENT 
Content-Length: 0 
<Ctrl+Z> 
OK 
+CHTTPACT: DATA, 249 
HTTP/1.1 200 OK 
Content-Type: text/html 
Content-Language: zh-CN 
Content-Length: 57 
Date: Tue, 31 Mar 2009 01:56:05 GMT 
Connection: Close 
Proxy-Connection: Close 
<html> 
<header>test</header> 
<body> 
Test body 
</body> 
+CHTTPACT: 0 
AT+CHTTPACT=”www.mywebsite.com”,80 
+CHTTPACT: REQUEST 
POST http://www.mywebsite.com/mydir/test.jsp HTTP/1.1 
Host: www.mywebsite.com 
User-Agent: MY WEB AGENT 
Accept: */* 
Content-Type: application/x-www-form-urlencoded 
Cache-Control: no-cache 
Accept-Charset: utf-8, us-ascii 
Pragma: no-cache 
Content-Length: 29 
myparam1=test1&myparam2=test2<Ctrl+Z> 
OK 
+CHTTPACT: DATA, 234 
HTTP/1.1 200 OK 
Content-Type: text/html 
Content-Language: zh-CN 
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Content-Length: 54 
Date: Tue, 31 Mar 2009 01:56:05 GMT 
Connection: Close 
Proxy-Connection: Close 
<html> 
<header>result</header> 
<body> 
Result is OK 
</body> 
+CHTTPACT: 0 
AT+CHTTPACT=? 
+CHTTPACT: “ADDRESS”,(1-65535) 
OK 
15.4.2  Unsolicited HTTP codes (summary of CME ERROR codes)   
Code of <err> Description 
220  Unknown error for HTTP 
221 
HTTP task is busy 
222  Failed to resolve server address 
223  HTTP timeout 
224 
Failed to transfer data 
225  Memory error 
226  Invalid parameter 
227 
Network error 
15.5   HTP 
These AT Commands of HTP related are used to synchronize system time with HTTP server. 
15.5.1  AT+CHTPSERV  Set HTP server info 
Description 
This command is used to add o
r delete HTP server information. There are maximum 16 HTP 
servers. 
SIM PIN References 
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YES 
Vendor 
Syntax 
Test Command  Responses 
AT+CHTPSERV=? +CHTPSERV:"ADD","HOST",(1-65535), 
(0-1)[,"PROXY",(1-65535)] 
+CHTPSERV: "DEL",(0-15) 
OK 
Read Command 
Responses 
AT+ CHTPSERV?  +CHTPSERV:<index>"<host>",<port>,<http_version> 
[,"<proxy>",<proxy_port>] 
… 
+CHTPSERV:<index>"<host>",<port>[,"<proxy>",< proxy_port>] 
OK 
OK  
(if HTP server not setted)
Write Command 
Responses 
AT+CHTPSERV= 
"<cmd>","<host_or_idx>"[,<
port>,<http_version> 
[,"<proxy>",<proxy_port>]] 
OK 
ERROR 
Defined values 
<cmd> 
This command to operate the HTP server list. 
  “ADD”: add a HTP server item to the list 
  “DEL”: delete a HTP server item from the list 
<host_or_idx> 
If the <cmd> is “ADD”, this field is the same as <host>, needs quotation marks; If the <cmd> is 
“DEL”
, this field is the index of the HTP server item to be deleted from the list, does not need 
quotation marks. 
<host> 
The HTP server address. 
<port> 
The HTP server port. 
<http_version> 
The HTTP version of the HTP server: 
0- HTTP 1.0 
1- HTTP 1.1 
<proxy> 
The proxy address 
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<proxy_port> 
The port of the proxy 
<index> 
The HTP server index. 
Examples 
AT+CHTPSERV=”ADD”,”www.google.com”,80,1 
OK 
15.5.2  AT+CHTPUPDATE    Updating date time using HTP protocol 
Description 
This command is used to updating date time using HTP protocol. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+CHTPUPDATE=? OK 
Read Command  Response 
AT+CHTPUPDATE? +CHTPUPDATE:<status> 
OK 
Execute Command  Responses 
AT+CHTPUPDATE OK 
+CHTPUPDATE: <err> 
ERROR 
Defined values 
<status> 
The status of HTP module: 
  Updating: HTP module is synchronizing date time 
  NULL: HTP module is idle now 
<err> 
The result of the HTP updating 
Examples 
AT+CHTPUPDATE 
OK 
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+CHTPUPDATE: 0 
15.5.3  Unsolicited HTP Codes 
Code of <err> Description 
0 
Operation succeeded 
1  Unknown error 
2  Wrong parameter 
3 
Wrong date and time calculated 
4  Network error 
15.6  SMTP 
15.6.1  AT+SMTPSRV    Set SMTP server address and port number 
Description   
This synchronous command is used to set SMTP server’s address and server’s port number. SMTP 
client will initiate TCP session with the specified server to send an e-mail. If the process of sending 
an e-mail is ongoing, the command will return “ERROR” directly. 
Read command returns current SMTP server address and port number. 
Execution command will clear SMTP server address and set the port number as default value. 
NOTE: After  an  e-mail is sent successfully or unsuccessfully, SMTP server address 
and port 
number won’t be cleared. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+SMTPSRV=?  +SMTPSRV: (list of supported <port>s) 
OK 
ERROR 
Read Command  Responses 
AT+SMTPSRV?  +SMTPSRV: <server>, <port> 
OK 
ERROR 
Write Command  Responses 
AT+SMTPSRV=<server> 
OK 
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[, <port>]  ERROR 
Execution Command 
Responses 
AT+SMTPSRV OK 
ERROR 
Defined values 
<server> 
SMTP server address, non empty string with double quotes, mandatory and ASCII text string up to 
128 characters. 
<port> 
Port number of SMTP server in decimal format, from 1 to 65535, and default port is 25 for SMTP. 
Examples 
AT+SMTPSRV="smtp.server.com",25 
OK 
AT+SMTPSRV? 
+SMTPSRV: "smtp.server.com", 25 
OK 
AT+SMTPSRV 
OK 
AT+SMTPSRV? 
+SMTPSRV: "", 25 
OK 
15.6.2  AT+SMTPAUTH  SMTP server authentication 
Description   
This synchronous 
command is used to control SMTP authentication during connection with SMTP 
server. If SMTP server requires authentication 
while logging in the server, TE must set the 
authentication control flag and provide user name and password correctly before sending an e-mail. 
If the process of sending an e-mail is ongoing, the command will return “ERROR” directly. 
Read command returns current SMTP server authentication control flag, if the flag is 0, both <user> 
and <pwd> are empty strings. 
Execution Command cancels SMTP server authentication and clear user name and password. 
NOTE: After an e-mail is sent successfully or unsuccessfully, server authentication won’
t be 
cleared. 
SIM PIN References 
YES  Vendor 
Syntax 
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Test Command 
Responses 
AT+SMTPAUTH=?  +SMTPAUTH: (list of supported <flag>s) 
OK 
ERROR 
Read Command  Responses 
AT+SMTPAUTH?  +SMTPAUTH: <flag>, <user>, <pwd> 
OK 
ERROR 
Write Command  Responses 
AT+SMTPAUTH= 
<flag>[, <user>, <pwd>] 
OK 
ERROR 
Execution Command 
Responses 
AT+SMTPAUTH OK 
ERROR 
Defined values 
<flag> 
SMTP server authentication control flag, integer type. 
    0    –    SMTP server doesn’t require authentication, factory value. 
1    –    SMTP server requires authentication. 
<user> 
User name to be used for SMTP authentication, non empty string with double quotes and up to 128 
characters. 
<pwd> 
Password to be used for SMTP authentication, string with double quotes and up to 128characters. 
NOTE: If <flag> is 0, <user> and <pwd> must be omitted (i.e. only <flag> is present). 
Examples 
AT+SMTPAUTH? 
+SMTPAUTH: 0, “”, “” 
OK 
AT+SMTPAUTH=1,”username”,”password” 
OK 
AT+SMTPAUTH? 
+SMTPAUTH: 1, ”username”, ”password” 
OK 
AT+SMTPAUTH 
OK 
AT+SMTPAUTH? 
+SMTPAUTH: 0, “”, “” 
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OK 
15.6.3  AT+SMTPFROM  Sender address and name 
Description 
This synchronous command is used to set sender’s address and name, which are used to construct 
e-mail header. The sender’s address must be correct if the SMTP server requries, and if the process 
of sending an e-mail is ongoing, the command will return “ERROR” directly. 
Read command returns current sender’s address and name. 
Execution command will clear sender’s address and name. 
NOTE: After an e-mail is sent successfully or unsuccessfully, sender address and name won’t be 
cleared. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+SMTPFROM=? OK 
ERROR 
Read Command  Responses 
AT+SMTPFROM? 
+SMTPFROM: <saddr>, <sname> 
OK 
ERROR 
Write Command  Responses 
AT+SMTPFROM=<saddr>[, 
<sname>] 
OK 
ERROR 
Execution Command  Responses 
AT+SMTPFROM 
OK 
ERROR 
Defined values 
<saddr> 
E-
mail sender address (MAIL FROM), non empty string with double quotes, mandatory and ASCII 
text up to 128 characters. <saddr> will be present in the header of the e-mail sent by SMTP client in 
the field: “From: ”. 
<sname> 
E-mail sende
r name, string with double quotes, and alphanumeric ASCII text up to 64 characters. 
<sname> will be present in the header of the e-mail sent by SMTP client in the field: “From: ”. 
Examples 
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AT+SMTPFROM="senderaddress@server.com","sendername" 
OK 
AT+SMTPFROM? 
+SMTPFROM: "senderaddress@server.com", "sendername" 
OK 
AT+SMTPFROM 
OK 
AT+SMTPFROM? 
+SMTPFROM: "", "" 
OK 
15.6.4  AT+SMTPRCPT    Recipient address and name (TO/CC/BCC) 
Description 
This synchronous command is used to set recipient address/name and kind (TO/CC/BCC). If only 
the parameter of “kind”  is present, the command will clear all recipients 
of this kind, and if only 
parameters of “kind” and “index” 
are present, the command will clear the specified recipient. If the 
process of sending an e-mail is ongoing, the command will return “ERROR” directly. 
Read command returns current recipient address/name and kind list. 
Execution command will clear all recipient information. 
NOTE: After  an  e-mail is sent successfully, all recipients will be cleared, if unsuccessf
ully, they 
won’t be cleared. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+SMTPRCPT=?  +SMTPRCPT: (list of supported  <kind>s),  (list of supported
<index>s) 
OK 
ERROR 
Read Command 
Responses 
AT+SMTPRCPT?  [+SMTPRCPT: <kind>, <index>, <raddr>, <rname> 
[<CR><LF>…]] 
OK 
OK 
ERROR 
Write Command  Responses 
AT+ SMTPRCPT=<kind>[, 
<index>[,<raddr>[,<rname>]
OK 
ERROR 
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]] 
Execution Command  Responses 
AT+SMTPRCPT OK 
ERROR 
Defined values 
<kind> 
Recipient kind, the kinds of TO and CC are used to construct e-mail header in the field: “
To: 
” or 
“Cc: ”. 
    0    –    TO, normal recipient. 
1    –    CC, Carbon Copy recipient. 
    2    –    BCC, Blind Carbon Copy recipient. 
<index> 
Index of the kind of recipient, decimal format, and from 0 to 4. 
<raddr> 
Recipient address, non empty string with double quotes, and up to 128 characters. 
<rname> 
Recipient name, string type with double quotes, and up to 64characters. 
Examples 
AT+SMTPRCPT=0, 0, “rcptaddress_to@server.com”, “rcptname_to” 
OK 
AT+SMTPRCPT? 
+SMTPRCPT: 0, 0, “rcptaddress_to@server.com”, “rcptname_to” 
OK 
AT+SMTPRCPT=1, 0, “rcptaddress_cc@server.com”, “rcptname_cc” 
OK 
AT+SMTPRCPT? 
+SMTPRCPT: 0, 0, “rcptaddress_to@server.com”, “rcptname_to” 
+SMTPRCPT: 1, 0, “rcptaddress_cc@server.com”, “rcptname_cc” 
OK 
15.6.5  AT+SMTPSUB    E-mail subject 
Description   
This synchronous command is used to set the subject of e-mail, which is used to construct e-mail 
header. If the process of sending an e-mail is ongoing, the command will return “ERROR” directly. 
Read command returns current e-mail subject. 
Execution command will clear the subject. 
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NOTE: After an e-mail is sent successfully, the subject will be cleared, if unsuccessfully, it won’t 
be cleared. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+SMTPSUB=?  OK 
ERROR 
Read Command  Responses 
AT+SMTPSUB?  +SMTPSUB: <subject> 
OK 
ERROR 
Write Command  Responses 
AT+ SMTPSUB=<subject> OK 
ERROR 
Execution Command  Responses 
AT+SMTPSUB 
OK 
ERROR 
Defined values 
<subject> 
E-mail subject, string with double quotes, and ASCII text up to 512 characters. <subject> will be 
present in the header of the e-mail sent by SMTP client in the field: “Subject:  ”
. For write 
command, if the subject contains non-ASCII characters, this parameter should contain a prefix of 
{non-ascii}. 
Examples 
AT+SMTPSUB? 
+SMTPSUB: “” 
OK 
AT+SMTPSUB=”THIS IS A TEST MAIL” 
OK 
AT+SMTPSUB={non-ascii}”E6B58BE8AF95E982AEE4BBB6” 
OK 
AT+SMTPSUB? 
+SMTPSUB: “THIS IS A TEST MAIL” 
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OK 
15.6.6  AT+SMTPBODY    E-mail body 
Description   
This command is used to set e-mail body, which will be sent to SMTP server with text format. 
Read command returns current e-mail body. If the process of sending an e-
mail is ongoing, the 
command will return “ERROR” directly. 
Execute command will switch the serial port from comm
and mode to data mode, so TE can enter 
more ASCII text as e-mail body (up to 5120), and CTRL-Z (ESC) is used to finish (cancel) the 
input operation and switch the serial port back to command mode. 
NOTE: After an e-mail is sent successfully, the body will be cleared, if unsuccessfully, it won’t be 
cleared. When execute command AT +SMTPBODY, and display “>>”, the prevenient body will be 
cleared. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+SMTPBODY=? OK 
ERROR 
Read Command 
Responses 
AT+SMTPBODY?  +SMTPBODY: <body> 
OK 
ERROR 
Write Command 
Responses 
AT+ SMTPBODY=<body> OK 
ERROR 
Execution Command  Responses 
AT+SMTPBODY >>   
ERROR 
Defined values 
<body> 
E-mail body, string with double quotes, and printable ASCII text up to 512 or 5120 characters. 
NOTE: In data mode, “BACKSPACE” can be used to cancel an ASCII character. 
Examples 
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AT+SMTPBODY=”THIS IS A TEST MAIL FROM SIMCOM MODULE” 
OK 
AT+SMTPBODY? 
+SMTPBODY: ”THIS IS A TEST MAIL FROM SIMCOM MODULE” 
OK 
AT+SMTPBODY 
>> This is a test mail.<CTRL-Z> 
OK 
AT+SMTPBODY? 
+SMTPBODY: ”This is a test mail.” 
OK 
AT+SMTPBODY 
>> This is a test mail.<ESC> 
OK 
AT+SMTPBODY? 
+SMTPBODY: “” 
OK 
15.6.7  AT+SMTPBCH    E-mail body character set 
Description   
This synchronous command is used to set the body character set of e-mail. If the process sending an 
e-mail is ongoing, the command will return “ERROR” directly. 
Read command returns current e-mail body character set. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+SMTPBCH=?  +SMTPBCH: ”CHARSET” 
OK 
ERROR 
Read Command  Responses 
AT+SMTPBCH?  +SMTPBCH: <charset> 
OK 
ERROR 
Write Command  Responses 
AT+ SMTPBCH=<charset> OK 
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ERROR 
Execution Command  Responses 
AT+ SMTPBCH OK 
ERROR 
Defined values 
<charset> 
E-mail body character, string with double quotes. By default, it is “utf-8”. The maximum length is 
30 bytes. 
Examples 
AT+SMTPBCH=? 
+SMTPBCH: “CHARSET” 
OK 
AT+SMTPBCH=”gb2312” 
OK 
AT+SMTPBCH? 
+SMTPBCH: “gb2312” 
OK 
15.6.8  AT+SMTPFILE  Select attachment 
Description   
The  synchronous command is used to select file as e-mail attachment. If the process sending an 
e-mail is ongoing, the command will return “ERROR” directly. 
Read command returns current all selected attachments with full path. 
Execute command will clear all attachments. 
NOTE: After an e-mail is sent successfully, attachment will be cleared, if unsuccessfully, it won’t 
be cleared. The same file can’t be selected twice. 
AT+ SMTPFILE=<index> is used to delete the relevant attachments. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command Responses 
AT+SMTPFILE=?  +SMTPFILE: (list of supported <index>s) 
OK 
ERROR 
Read Command  Responses 
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AT+SMTPFILE?  [+SMTPFILE: <index>, <filename>, <filesize> 
[<CR><LF>…]] 
OK 
ERROR 
Write Command  Responses 
AT+SMTPFILE=
<index>[, 
<filename>] 
OK 
[+SMTP: OVERSIZE] 
ERROR 
ERROR 
Execution Command 
Responses 
AT+SMTPFILE 
OK 
ERROR 
Defined values 
<index> 
Index for attachments, from 1 to 10. According to the sequence of <index>, SMTP client will 
encode and send all attachments. 
<filename> 
String type with doub
le quotes, the name of a file which is under current directory (refer to file 
system commands). SMTP client doesn’t allow two attachments with the same file name. For write 
command, if the file name contains non-ASCII characters, this parameter should contain a prefix of 
{non-ascii}. 
<filesize> 
File size in decimal format. The total size of all attachments can’t exceed 10MB. 
Examples 
AT+SMTPFILE=1,”file1.txt” 
OK 
AT+SMTPFILE=1,{non-ascii}”E6B58BE8AF95E99984E4BBB62E6A7067” 
OK 
AT+SMTPFILE? 
+SMTPFILE: 1, “C:/file1.txt” 
OK 
AT+SMTPFILE=2,”file2.txt” 
OK 
AT+SMTPFILE? 
+SMTPFILE: 1, “C:/file1.txt” 
+SMTPFILE: 2, “C:/file2.txt” 
OK 
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15.6.9  AT+SMTPSEND  Initiate session and send e-mail 
Description   
This asynchronous command is used to initiate TCP session with SMTP server and send an e-mail 
after all 
mandatory parameters have been set correctly. After SMTP client has connected with 
specified SMTP server and SMTP client receives an indication that indicates SMTP server is 
working well, the command will return “+SMTP:  OK”, but it doesn’t indicate that the e-mail is 
already sent successfully. 
After  the  e-mail is sent and the session is closed, an Unsolicited 
Result Code (URC) will be 
returned to TE, “+SMTP: SUCCESS”  indicates the e-mail is sent successfully, and other URCs 
indicate a failed result and the session is closed. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command 
Responses 
AT+SMTPSEND=? OK 
ERROR 
Read Command  Responses 
AT+SMTPSEND?  +SMTPSEND: <ongoing> 
OK 
ERROR 
Execution Command  Responses 
AT+SMTPSEND OK 
+SMTP: OK 
+SMTP: <code> 
+SMTP: OK 
+SMTP: <code> 
OK 
+SMTP: <code> 
ERROR 
ERROR 
Defined values 
<ongoing> 
Whether or not an e-mail is sent in process. If the process of sending an e-mail is ongoing, SMTP 
client can’t send the e-mail again. 
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0    –    Not ongoing. 
1    –    Ongoing. 
<code> 
SUCCESS SMTP client has sent the e-mail successfully. 
ONGOING  The process of sending an e-mail is ongoing. 
PARAM ERROR 
Mandatory parameter isn’t set (SMTP server, or sender/recipient address) 
NETWORK ERROR 
Invalid SMTP server. 
Network is bad for establishing session or sending data to SMTP server. 
SERVER ERROR SMTP server released the session. 
SMTP server rejects the operation with wrong response. 
SMTP server doesn’t give SMTP client a response in time. 
AUTH REQUIRED 
Authentication is required by SMTP server. 
AUTH ERROR 
USER CANCEL 
SMTP server rejects the session because of bad user name and password 
combination. 
User called AT+SMTPSTOP. 
Examples 
AT+SMTPSEND? 
+SMTPSEND: 0 
OK 
AT+SMTPSEND 
+SMTP: OK 
OK 
+SMTP: SUCCESS 
15.6.10  AT+SMTPSTOP    Force to stop sending e-mail 
Description 
The synchronous command is used to force to stop sending e-mail and close the TCP session while 
sending an e-mail is ongoing. Otherwise, the command will return “ERROR” directly. 
SIM PIN References 
YES  Vendor 
Syntax 
Test Command  Responses 
AT+SMTPSTOP=? OK 
ERROR 
Execution Command  Responses 
AT+SMTPSTOP 
OK 
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ERROR 
Examples 
AT+SMTPSEND? 
+SMTPSEND: 1 
OK 
AT+SMTPSTOP 
OK 
15.7  Common Channel Service 
The common channel related AT commands needs the AT+CATR to be set to the used port. 
AT+CATR=0 may cause some problem. 
15.7.1   AT+CCHSTART  Acquire common channel service 
Description   
This command is used to acquire common channel service.
SIM PIN References 
YES Vendor 
Syntax 
Execute Command  Responses 
AT+CCHSTART 
OK 
+CCHSTART: <err> 
+CCHSTART: <err> 
OK 
ERROR 
Defined values 
<err> 
The result code of the acquiring common channel service. 0 is success. Other values are failure. 
Examples 
AT+CCHSTART 
OK 
+CCHSTART: 0 
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15.7.2   AT+CCHSTOP  Stop common channel service 
Description   
This command is used to stop common channel service.   
SIM PIN References 
YES 
Vendor 
Syntax 
Execute Command  Responses 
AT+CCHSTOP OK 
+CCHSTOP: <err> 
+CCHSTOP: <err> 
OK 
ERROR 
Defined values 
<err> 
The result code of the stoping common channel service. 0 is success. Other values are failure. 
Examples 
AT+CCHSTOP 
OK 
+CCHSTOP: 0 
15.7.3   AT+CCHOPEN  Open a channel 
Description   
This command is used to connect peer using common channel service. 
SIM PIN References 
YES Vendor 
Syntax 
Test Command  Responses 
AT+CCHOPEN=? +CCHOPEN: (0,1),”ADDRESS”,list of <port>s[,
list of 
<channel_type>s [,list of <bind_port>s]] 
OK 
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Write Command  Responses 
AT+CCHOPEN=<session_i
d>,  ”<host>”,<port>[<chann
el_type>,[<bind_port>]] 
OK 
+CCHOPEN: <session_id>,<err> 
+CCHOPEN: <session_id>,<err> 
OK 
ERROR 
Defined values 
<session_id> 
The session index to operate. It’s from 0 to 1. 
<host> 
The host address, maximum length is 256 
<port> 
The peer port for channel, the range is from 1 to 65535 
<channel_type> 
The type of channel: 
1    –    TCP client. 
2    –    SSLv3.0/TLSv1.0 client. 
<bind_port> 
The local port for channel, the range is from 1 to 65535 
<err> 
The result code of the opening common channel. 0 is success. Other values are failure. 
Examples 
AT+CCHOPEN=0, ”www.myserver.com”,443,2 
OK 
+CCHOPEN: 0 0 
AT+CCHOPEN=0, ”www.myserver.com”,443,1 
OK 
+CCHOPEN: 0,0 
15.7.4   AT+CCHCLOSE  Close a channel 
Description   
This command is used to disconnect from peer.   
SIM PIN References 
YES Vendor 
Syntax 
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Write Command  Responses 
AT+CCHCLOSE=<session_
id> 
OK 
+CCHCLOSE: <session_id>,<err> 
+CCHCLOSE: <session_id>,<err> 
OK 
ERROR 
Defined values 
<session_id> 
The session index to operate. It’s from 0 to 1. 
<err> 
The result code of the closing common channel. 0 is success. Other values are failure. 
Examples 
AT+CCHCLOSE=0 
OK 
+CCHCLOSE: 0,0 
15.7.5   AT+CCHSEND  Send data to peer 
Description   
This command is used to send data to peer. If the first parameter of AT+CCHSET is set to 1, 
the +CCHSEND: <session_id>, <err> will be reported after AT+CCHSEND is finished. 
SIM PIN References 
YES Vendor 
Syntax 
Test Command  Responses 
AT+CCHSEND=?  +CCHSEND: (0,1),(1-2048) 
OK 
Read Command  Responses 
AT+CCHSEND?  +CCHSEND: 0,<unsent_len_0>,1,<unsent_len_1> 
OK 
Write Command  Responses 
AT+CCHSEND=<session_i
d>,<len> 
> 
OK   
ERROR 
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Defined values 
<session_id> 
The session index to operate. It’s from 0 to 1. 
<len> 
The length of data to send. Its range is from 1 to 2048. 
<unsent_len_0> 
The data of channel session 0 cached in DS layer which is waiting to be sent. 
<unsent_len_1> 
The data of channel session 1 cached in DS layer which is waiting to be sent. 
Examples 
AT+CCHSEND=0, 125 
>GET / HTTP/1.1 
Host: www.google.com.hk 
User-Agent: MAUI htp User Agent 
Proxy-Connection: keep-alive 
Content-Length: 0 
OK 
15.7.6  AT+CCHRECV  Receive data from the channel 
Description   
This command is used to receive data from the channel. 
SIM PIN References 
YES  Vendor 
Syntax 
Read Command 
Responses 
AT+CCHRECV?  +CCHRECV: LEN,<cache_len_0>,<cache_len_1> 
OK 
Write Command  Responses 
AT+CCHRECV=<session_i
d>[,<max_recv_len>] 
OK 
[+CCHRECV: DATA, <session_id>,<len> 
… 
+CCHRECV: DATA, <session_id>,<len> 
…] 
+CCHRECV: <session_id>,<result>   
+CCHRECV: <session_id>,<result> 
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ERROR 
ERROR 
+CCHRECV: <session_id>,<result> 
ERROR 
Defined values 
<session_id> 
The session index to operate. It’s from 0 to 1. 
<max_recv_len> 
Maximum bytes of data to receive in the current AT+CCHRECV calling, the value can’t be greater 
than the length of RX data cached for session <session_id>. 
0 means maximum 2048 byte
s(But, when 2048 is greater than the length of RX data cached for 
session <session_id>, 0 means the length of RX data cached for session <session_id>).   
The default value is the length of RX data cached for session <session_id>. 
<cache_len_0> 
The length of RX data cached for session 0. 
<cache_len_1> 
The length of RX data cached for session 1. 
<result> 
The final result according to Unsolicited common channel command <err> Codes 
<len> 
The length of data followed. 
Examples 
AT+CCHRECV=1 
OK 
+CCHRECV: DATA,1,249 
HTTP/1.1 200 OK 
Content-Type: text/html 
Content-Language: zh-CN 
Content-Length: 57 
Date: Tue, 31 Mar 2009 01:56:05 GMT 
Connection: Close 
Proxy-Connection: Close 
<html> 
<header>test</header> 
<body> 
Test body 
</body> 
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+CCHRECV:1, 0 
15.7.7   AT+CCHSET  Set the parameter of common channel service 
Description   
This command is set the parameter of common channel service. It must be called before 
AT+CCHSTART. 
SIM PIN References 
YES Vendor 
Syntax 
Test Command 
Responses 
AT+CCHSET=?  +CCHSET: (0,1),(0,1) 
OK 
Read Command  Responses 
AT+CCHSET?  +CCHSET: <report_send_result>,<recv_mode> 
OK 
Write Command  Responses 
AT+CCHSET=<report_send
_result>[,<recv_mode>] 
OK   
ERROR 
Defined values 
<report_send_result> 
Whether to report result of CCHSEND: 
0  –  No. 
1  –  Yes. 
<recv_mode> 
The receiving mode: 
0  –  Output the data to MCU whenever received data. 
1  –  Module caches the received data and notify MCU with +CCHEVENT: <session_id>, 
RECV EVENT. MCU can use AT+CCHRECV to receive the cached data(manual receiving mode). 
Examples 
AT+CCHSET=1,1 
OK 
15.7.8   AT+CCHADDR    Get the IPv4 address for common channel service 
Description   
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This command is used to get the IPv4 address after calling AT+CCHSTART.   
SIM PIN References 
YES Vendor 
Syntax 
Execute Command  Responses 
AT+CCHADDR  +CCHADDR: < ip_address> 
OK   
ERROR 
Defined values 
<ip_address> 
A string parameter that identifies the IPv4 address of the common channel service when connecting 
to Packet network. 
Examples 
AT+CCHADDR 
+CCHADDR: 10.71.155.118 
OK 
15.7.9  Unsolicited common channel Codes 
Code 
Description 
+CCHEVENT: 
<session_id>,RECV EVENT 
In manual receiving mode, when new data of a channel arriving 
to the module, this unsolicited result code will be reported to 
MCU. 
+CCH_PEER_CLOSED: 
<session_id> 
The channel is closed by the peer. 
15.7.10  Unsolicited common channel command <err> Codes 
0  Operation succeeded 
1  Alerting state(reserved) 
2  Unknown error 
3  Busy 
4  Peer closed 
5 
Operation timeout 
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6 
Transfer failed 
7  Memory error 
8  Invalid parameter 
9 
Network error 
10  Open session error 
11 
State error 
12  Create session error 
13  Create socket error 
14 
Set ssl parameter error 
15  Get dns error 
16 
Connect socket error 
15.8  SSL Certificate & Key Management 
15.8.1  AT+CCERTDOWN  Transfer a certificate file to Module 
Description   
This command is used to transfer a certificate or key file to the module. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CCERTDOWN=? 
OK
Write Command  Responses 
AT+CCERTDOWN=“<filen
ame>”,<len> 
> 
OK 
> 
ERROR 
ERROR 
Defined values 
<filename> 
The  name of the certificate/key file. The file name must have type like “.der”  or  “.pem”
, and 
the .pem file cannot be protected using password. 
<len> 
The length of the file data to send. 
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Examples 
AT+CCERTDOWN=”client_key.der”,611 
>file content... 
OK 
15.8.2  AT+CCERTLIST    List certificate/key in module 
Description   
This command is used to list certificate/key files which has already been downloaded to the 
module. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CCERTLIST=? OK 
Execution Command  Responses 
AT+CCERTLIST  [ 
<list of files> with “+CCERTLIST:” header 
<CR><LF>] 
OK 
Defined values 
<list of files> 
The certificate/key files which has been downloaded to the module. 
Examples 
AT+CCERTLIST=? 
OK 
AT+CCERTLIST 
+CCERTLIST: "ca_cert.der" 
+CCERTLIST: "client_cert.der" 
+CCERTLIST: "client_key.der" 
+CCERTLIST: "server_cert.pem" 
+CCERTLIST: "server_key.pem" 
OK 
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15.8.3  AT+CCERTDELE    Delete certificate/key in the module 
Description   
This command is used to delete a certificate/key file in the module. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CCERTDELE=? 
OK 
Write Command  Responses 
AT+CCERTDELE=<filena
me> 
OK 
ERROR 
Defined values 
<filename> 
String with or with double quotes, file name which is relative and already existing. 
Examples 
AT+CCERTDELE=”server_key.pem” 
OK 
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16  AT Commands for GPS 
16.1  AT+CGPS  Start/Stop GPS session 
Description   
This command is used to start or stop GPS session. 
NOTE:   
1. Output of NMEA sentences is automatic; no control via AT commands is provided. At 
present the module only supports standalone mode. If executing AT+C GPS
=1, the GPS 
session will choose cold or hot start automatically. 
       2.  UE-based and UE-assisted mode depend  on URL (AT+CGPSURL). When UE-based 
mode fails, it will switch standalone mode. 
       3.  UE-assisted mode is singly fixed. Standalone and UE-based mode is consecutively 
fixed. 
       4. After the GPS closed, it should to wait about 2s~30s for start again. Reason:If the 
signal conditions are right (strong enough signals to allow ephemeris demodulation) or 
ephemeris demodulation is on going, sometimes MGP will stay on longer in order to 
demodulate more ephemeris.  
This will help the engine provide faster TTFF and 
possibly better yield later (up to 2 hours), because it has the benefit of more ephemeris 
available.  
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CGPS=? +CGPS: (list of supported <on/off>s),( list of supported <mode>s) 
OK 
Read Command 
Responses 
AT+CGPS? +CGPS: <on/off>,<mode> 
OK 
Write Command  Responses 
AT+CGPS=<on/off> 
[,<mode>] 
OK 
If UE-assisted mode, when fixed will report indication: 
+CAGPSINFO:<lat>,<lon>,<alt>,<date>,<time> 
If <off>, it will report indication: 
+CGPS: 0 
ERROR 
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Defined values 
<on/off> 
0  –  stop GPS session 
1  –  start GPS session 
<mode> 
Ignore -  standalone mode 
1  –  standalone mode 
2  –  UE-based mode 
3  –  UE-assisted mode 
<lat> 
Latitude of current position. Unit is in 10^8 degree 
<log> 
Longitude of current position. Unit is in 10^8 degree 
<alt> 
MSL Altitude. Unit is meters. 
<date> 
UTC Date. Output format is ddmmyyyy 
<time> 
UTC Time. Output format is hhmmss.s 
< unconfidence > 
Unconfidence of the location, GPS fixed report 39, cell fixed report 100. 
< uncertainty_meter > 
Uncertainty meters. 
Examples 
AT+CGPS? 
OK 
AT+CGPS=1,1 
OK
16.2  AT+CGPSINFO    Get GPS fixed position information 
Description   
This command is used to get current position information. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CGPSINFO=? +CCGPSINFO:   (scope of <time>) 
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OK 
Read Command  Responses 
AT+CGPSINFO?  +CCGPSINFO:   <time> 
OK 
Write Command  Responses 
AT+CGPSINFO=<time> OK 
+CGPSINFO:  [<lat>],[<N/S>],[<log>],[<E/W>],[<date>],[
<UTC 
time>],[<alt>],[<speed>],[<course>] 
OK (if <time>=0) 
Execution Command  Responses 
AT+CGPSINFO 
+CGPSINFO:  [<lat>],[<N/S>],[<log>],[<E/W>],[<date>],[<UTC 
time>],[<alt>],[<speed>],[<course>] 
OK 
Defined values 
<lat> 
Latitude of current position. Output format is ddmm.mmmmmm 
<N/S> 
N/S Indicator, N=north or S=south 
<log> 
Longitude of current position. Output format is dddmm.mmmmmm 
<E/W> 
E/W Indicator, E=east or W=west 
<date> 
Date. Output format is ddmmyy 
<UTC time> 
UTC Time. Output format is hhmmss.s 
<alt> 
MSL Altitude. Unit is meters. 
<speed> 
Speed Over Ground. Unit is knots. 
<course> 
Course. Degrees. 
<time> 
The range is 0-255, unit is second, after set <time> will report the GPS information every the 
seconds. 
Examples 
AT+CGPSINFO=? 
+CGPSINFO: (0-255) 
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OK 
AT+CGPSINFO? 
+CGPSINFO: 0 
OK 
AT+CGPSINFO 
+CGPSINFO:3113.343286,N,12121.234064,E,250311,072809.3,44.1,0.0,0 
OK 
16.3  AT+CGPSCOLD    Cold start GPS 
Description 
This command is used to cold start GPS session. 
NOTE: Before using this command,it must use AT+CGP S =0 to stop GPS session. 
Syntax 
Test Command  Responses 
AT+CGPSCOLD=? OK 
Execution Command  Responses 
AT+CGPSCOLD 
OK 
Examples 
AT+CGPSCOLD=? 
OK 
AT+CGPSCOLD 
OK 
16.4  AT+CGPSHOT    Hot start GPS 
Description 
This command is used to hot start GPS session 
NOTE: Before using this command, AT +C GP S =0 must be used to stop GPS session. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CGPSHOT=? OK 
SIM PIN References 
NO  Vendor 
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Execution Command 
Responses 
AT+CGPSHOT OK 
Examples 
AT+CGPSHOT=? 
OK 
AT+CGPSHOT 
OK 
16.5  AT+CGPSURL    Set AGPS default server URL 
Description 
This command is used to set AGPS default server URL. It will take effect only after restarting. 
SIM PIN References 
NO Vendor 
Syntax 
Test Command  Responses 
AT+CGPSURL=? 
OK 
Read Command 
Responses 
AT+CGPSURL?  +CGPSURL: <URL> 
OK 
Write Command 
Responses 
AT+CGPSURL=<URL> OK 
ERROR 
Defined values 
<URL> 
AGPS default server URL. It needs double quotation marks. 
Examples 
AT+CGPSURL=”123.123.123.123:8888” 
OK 
AT+CGPSURL? 
+CGPSURL: ”123.123.123.123:8888” 
OK 
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16.6  AT+CGPSSSL  Set AGPS transport security 
Description 
This command is used to select transport security, used certificate or not. The certificate gets from 
local carrier. If the AGPS server doesn’t need certificate, execute AT+CGPSSSL=0. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CGPSSSL=?  +CGPSSSL: (list of supported <SSL>s) 
OK 
Read Command  Responses 
AT+CGPSSSL?  +CGPSSSL: <SSL> 
OK 
Write Command 
Responses 
AT+CGPSSSL=<SSL> 
OK 
ERROR 
Defined values 
<SSL> 
0    –    don’t use certificate 
1    –    use certificate 
Examples 
AT+CGPSSSL=0 
OK 
16.7  AT+CGPSAUTO    Start GPS automatic 
Description 
This command is used to start GPS automaticly when module powers on, GPS is closed defaultly. 
NOTE: If GPS start automatically, its operation mode is standalone mode. 
SIM PIN References 
NO Vendor 
Syntax 
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Test Command 
Responses 
AT+CGPSAUTO=?  +CGPSAUTO:( list of supported <auto>s) 
OK 
Read Command  Responses 
AT+CGPSAUTO?  +CGPSAUTO:<auto> 
OK 
Write Command  Responses 
AT+CGPSAUTO=<auto> 
OK 
ERROR 
Defined values 
<auto> 
0    –    Non-automatic 
    1    –    automatic 
Examples 
AT+CGPSAUTO=1 
OK 
16.8  AT+CGPSNMEA  Configure NMEA sentence type 
Description 
This command is used to configure NMEA output sentences which are generated by the gpsOne 
engine when position data is available.   
NOTE: If nmea bit 2 GPGSV doesn’t configure, GPGSV sentence also doesn’t output  on 
AT/modem port even set AT+CGPSFTM=1. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CGPSNMEA=?  +CGPSNMEA:   (scope of <nmea>),(scope of <bdnmea>) 
OK 
Read Command  Responses 
AT+CGPSNMEA? 
+CGPSNMEA:   <nmea>,<bdnmea> 
OK 
Write Command  Responses 
AT+CGPSNMEA=<nmea>[, OK 
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<bdnmea>] 
If GPS engine is running: 
ERROR 
Defined values 
<nmea> 
Range – 0 to 511
Each bit enables an NMEA sentence output as follows: 
  Bit 0 – GPGGA (global positioning system fix data) 
  Bit 1 – GPRMC (recommended minimum specific GPS/TRANSIT data) 
  Bit 2 – GPGSV (GPS satellites in view) 
  Bit 3 – GPGSA (GPS DOP and active satellites) 
  Bit 4 – GPVTG (track made good and ground speed) 
Bit 5 – PQXFI (Global Positioning System Extended Fix Data.) 
Bit 6 – GLGSV (GLONASS satellites in view GLONASS fixes only) 
Bit 7 – GNGSA (DOP and GLONASS satellites; GPS+GLONASS or GLONASS-only fixes. 
Contains DOP information for all active satellites, but other information is GLONASS-only) 
Bit 8 – GNGNS (fix data for GNSS receivers; output for GPS-only, GLONASS-only, hybrid 
GLONASS+GPS fixes, or even AFLT fixes) 
 Set the desired NMEA sentence bit(s). If multiple NMEA sentence formats are desired, “OR” the 
desired bits together. 
<bdnmea> 
Range – 0 to 3 
Bit 0 – BDGSA (BEIDOU DOP and active satellites) 
Bit 1 – BDGSV (BEIDOU satellites in view) 
Examples 
AT+CGPSNMEA=511 
OK 
AT+CGPSNMEA=511,3 
OK 
16.9  AT+CGPSMD  Configure AGPS MO method 
Description 
This command specifies if the Mobile-Originated (MO) GPS session should use the control plane 
session or user plane session.   
SIM PIN References 
NO  Vendor 
Syntax 
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Test Command 
Responses 
AT+CGPSMD=?  +CGPSMD:   (scope of <method>) 
OK 
Read Command  Responses 
AT+CGPSMD?  +CGPSMD:   <method> 
OK 
Write Command  Responses 
AT+CGPSMD=<method> OK 
If GPS engine is running: 
ERROR 
Defined values 
<method> 
  0 – Control plane 
  1 – User plane 
Examples 
AT+CGPSMD=1 
OK 
16.10  AT+CGPSFTM    Start GPS test mode 
Description 
This command is used to start GPS test mode.   
NOTE:   
1. If test mode starts, the URC will report on AT port, Modem port and UART port. 
2. If testing on actual signal, <SV> should be ignored, 
and GPS must be started by AT+CGPS, 
AT+CGPSCOLD or AT+CGPSHOT. 
3. If testing on GPS signal simulate  equipment,  <SV> must be choiced
, and GPS will start 
automatically. 
4. URC sentence will report every 1 second. 
SIM PIN References 
NO Vendor 
Syntax 
Test Command  Responses 
AT+CGPSFTM=? 
OK 
Read Command  Responses 
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AT+CGPSFTM?  +CGPSFTM: <on/off> 
OK 
Write Command 
Responses 
AT+CGPSFTM=<on/off>  OK 
ERROR 
Defined values 
<on/off> 
0    –    Close test mode 
    1    –    Start test mode 
<CNo> 
Satellite CNo value. Floating value. 
URC format 
$GPGSV[,<SV>,<CNo>][...] 
$GLGSV[,<SV>,<CNo>][...] 
$BDGSV[,<SV>,<CNo>][...] 
Examples 
AT+CGPSFTM=1 
OK 
$GLGSV,78,20.6,66,25.6,77,21.6,79,21.9,67,26.2,68,23.6 
$GPGSV,10,36.3,12,33.5,14,26.5,15,27.0,18,30.6,20,29.4,21,14.9,24,32.8,25,30.6,31,29.1,32,27.0 
$BDGSV,201,28.7,204,29.0,206,27.3,207,25.9,209,25.0,210,18.5 
16.11  AT+CGPSDEL    Delete the GPS information 
Description   
This command is used to delete the GPS information. After executing the command, GPS start is 
cold start.   
NOTE: This command must be executed after GPS stopped. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CGPSDEL=? OK 
Execution Command  Responses 
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AT+CGPSDEL OK 
ERROR 
Examples 
AT+CGPSDEL=? 
OK 
AT+CGPSDEL 
OK 
16.12  AT+ CGPSXE    Enable/Disable GPS XTRA function 
Description   
This command is used to enable/disable the GPS XTRA function. 
NOTE:
 The function will take effect after restarting the module. XTRA function must download 
the assistant file from network by HTTP, so the APN must be set by AT+CGCONT command.
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CGPSXE=?  +CGPSXE: (list of supported <on/off>s) 
OK 
Read Command 
Responses 
AT+CGPSXE?  +CGPSXE: <on/off> 
OK 
Write Command  Responses 
AT+CGPSXE=<on/off> 
OK 
ERROR 
Defined values 
<on/off> 
0  –  Disable GPS XTRA 
1  –  Enable GPS XTRA 
Examples 
AT+CGPSXE=? 
+CGPSXE: (0,1) 
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OK 
AT+CGPSXE=0 
OK 
16.13  AT+CGPSXD    Download XTRA assistant file 
Description   
This  command  is used to download the GPS XTRA assistant file from network through http 
protocol. Module will download the latest assistant file form server and write the file into module. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CGPSXD=? +CGPSXD: (list of supported <server>s) 
OK 
Read Command  Responses 
AT+CGPSXD?  +CGPSXD: <server> 
OK 
Write Command 
Responses 
AT+CGPSXD=<server>  OK 
+CGPSXD: <resp> 
+CGPSXD: <resp> 
ERROR 
Defined values 
<server> 
0  –  XTRA primary server (precedence) 
1  –  XTRA secondary server 
2  –  XTRA tertiary server 
<resp> 
refer to Unsolicited XTRA download Codes 
Examples 
AT+CGPSXD=? 
+CGPSXD: (0-2)   
OK 
AT+CGPSXD=0 
OK 
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+CGPSXD: 0 
16.14  AT+CGPSXDAUTO  Download XTRA assistant file automatically 
Description   
This command is used to control download assistant file automatically or not when GPS start. 
XTRA function must enable for using this command. If assistant file doesn’t exist or check error, 
the module will download and inject the assistant file automatically. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CGPSXDAUTO=? +CGPSXDAUTO: (list of supported <on/off>s) 
OK 
Read Command 
Responses 
AT+CGPSXDAUTO? +CGPSXDAUTO: <on/off> 
OK 
Write Command  Responses 
AT+CGPSXDAUTO=<on/o
ff> 
OK 
ERROR 
Defined values 
<on/off> 
0  –  disable download automatically 
1  –  enable download automatically 
NOTE: Some URCs will report when downloading, it’s same as AT+CGPSXD command. 
Examples 
AT+CGPSXDAUTO=? 
+CGPSXDAUTO: (0,1)   
OK 
AT+CGPSXDAUTO=0 
OK 
16.15  AT+CGPSINFOCFG    Report GPS NMEA-0183 sentence 
Description   
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This command is used to report NMEA-0183 sentence. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CGPSINFOCFG=? +CGPSINFOCFG: (scope of <time>),(scope of <config>),
(scope of 
<bdconfig>) 
OK 
Read Command  Responses 
AT+CGPSINFOCFG?  +CGPSINFOCFG: <time>,<config>,<bdconfig> 
OK 
Write Command  Responses 
AT+CGPSINFOCFG=<time
>[,<config>][,<bdconfig>] 
OK 
(NMEA-0183 Sentence) 
…… 
OK (if <time>=0) 
Defined values 
<time> 
The range is 0-255, unit is second, after set <time> will report the GPS NMEA sentence every the 
seconds. 
If <time>=0, module stop reporting the NMEA sentence. 
<config> 
Range – 0 to 511 
Each bit enables an NMEA sentence output as follows: 
  Bit 0 – GPGGA (global positioning system fix data) 
  Bit 1 – GPRMC (recommended minimum specific GPS/TRANSIT data) 
  Bit 2 – GPGSV (GPS satellites in view) 
  Bit 3 – GPGSA (GPS DOP and active satellites) 
  Bit 4 – GPVTG (track made good and ground speed) 
Bit 5 –PQXFI (Global Positioning System Extended Fix Data.) 
Bit 6 – GLGSV (GLONASS satellites in view GLONASS fixes only) 
Bit 7 – GNGSA (DOP and GLONASS satellites; GPS+GLONASS or GLONASS-only fixes. 
Contains DOP information for all active satellites, but other information is GLONASS-only)   
Bit 8 – GNGNS (fix data for GNSS receivers; output for GPS-only, GLONASS-only, hybrid 
GLONASS+GPS fixes, or even AFLT fixes) 
 Set the desired NMEA sentence bit(s). If multiple NMEA sentence formats are desired, “OR” the 
desired bits together. 
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For example: 
If want to report GPRMC sentence by 10 seconds, should execute AT+CGPSINFOCFG=10,2 
<bdnmea> 
Range – 0 to 3
Bit 0 – BDGSA (BEIDOU DOP and active satellites) 
Bit 1 – BDGSV (BEIDOU satellites in view) 
Examples 
AT+CGPSINFOCFG=? 
+CGPSINFO: (0-255),(0-511),(0-3) 
OK 
AT+CGPSINFOCFG=10,31 
OK 
$GPGSV,4,1,16,04,53,057,44,02,55,334,44,10,61,023,44,05,45,253,43*7D 
$GPGSV,4,2,16,25,10,300,40,17,25,147,40,12,22,271,38,13,28,053,38*77 
$GPGSV,4,3,16,26,09,187,35,23,06,036,34,24,,,,27,,,*7A 
$GPGSV,4,4,16,09,,,,31,,,,30,,,,29,,,*7D 
$GPGGA,051147.0,3113.320991,N,12121.248076,E,1,10,0.8,47.5,M,0,M,,*45 
$GPVTG,NaN,T,,M,0.0,N,0.0,K,A*42 
$GPRMC,051147.0,A,3113.320991,N,12121.248076,E,0.0,0.0,211211,,,A*66 
$GPGSA,A,3,02,04,05,10,12,13,17,23,25,26,,,1.4,0.8,1.2*3B 
16.16  AT+CGPSPMD  Configure positioning mode   
Description   
This command is used to configure the positioning modes support. 
NOTE: Need to restart the module after setting the mode. 
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CGPSPMD=?  +CGPSPMD: (scope of <mode>) 
OK 
Read Command  Responses 
AT+CGPSPMD?  +CGPSPMD: <mode> 
OK 
Write Command  Responses 
AT+CGPSPMD=<mode> OK 
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ERROR 
Defined values 
<mode> 
Default is 0xFF7F 
Each bit enables a supported positioning mode as follows: 
Bit 0 – Standalone 
Bit 1 – UP MS-based 
Bit 2 – UP MS-assisted 
Bit 3 – CP MS-based (2G) 
Bit 4 – CP MS-assisted (2G) 
Bit 5 – CP UE-based (3G) 
Bit 6 – CP UE-assisted (3G) 
Bit 7 – NOT USED 
Bit 8 – UP MS-based (4G) 
Bit 9 – UP MS-assisted(4G) 
Bit 10 – CP MS-based (4G) 
Bit 11 – CP MS-assisted (4G) 
Set the desired mode sentence bit(s). If multiple modes are desired, “OR” the desired bits together. 
Example, support standalone, UP MS-based and UP MS-assisted, set Binary value 0000 0111, is 7. 
Examples 
AT+CGPSPMD=127 
OK 
16.17  AT+CGPSMSB  Configure based mode switch to standalone 
Description   
This command is used to configure AGPS based mode switching to standalone mode automatically 
or not. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command 
Responses 
AT+CGPSMSB=?  +CGPSMSB: (scope of <mode>) 
OK 
Read Command 
Responses 
AT+CGPSMSB?  +CGPSMSB: <mode> 
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OK 
Write Command  Responses 
AT+CGPSMSB=<mode> OK 
ERROR 
Defined values 
<mode> 
0  –  Don’t switch to standalone mode automatically 
1  –  Switch to standalone mode automatically 
Examples 
AT+CGPSMSB=0 
OK 
16.18  AT+CGPSHOR  Configure positioning desired accuracy 
Description   
The command is used to configure the positioning desired accuracy threshold in meters. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CGPSHOR=?  +CGPSHOR:   (scope of <acc>), (scope of < acc_f >) 
OK 
Read Command 
Responses 
AT+CGPSHOR?  +CGPSHOR: <acc>,<acc_f> 
OK 
Write Command 
Responses 
AT+CGPSHOR=<acc>[,<ac
c_f>] 
OK 
ERROR 
Defined values 
<acc> 
Range – 0 to 1800000 
Default value is 50 
<acc_f> 
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Reserved 
Examples 
AT+CGPSHOR=50 
OK 
16.19  AT+CGPSNOTIFY  LCS respond positioning request 
Description   
This command is used to respond to the incoming request for positioning request message. 
SIM PIN References 
NO  Vendor 
Syntax 
Test Command  Responses 
AT+CGPSNOTIFY=? +CGPSNOTIFY: (list of supported <resp>s) 
OK 
Write Command  Responses 
AT+CGPSNOTIFY=<resp> OK 
ERROR 
Defined values 
<resp> 
0  –  LCS notify verify accept 
1  –  LCS notify verify deny 
2  –  LCS notify verify no response 
Examples 
AT+CGPSNOTIFY=? 
+CGPSNOTIFY: (0-2) 
OK 
AT+CGPSNOTIFY=0 
OK 
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16.20  AT+CGPSMODE    Configure GPS and GLONASS mode 
Description   
This command is used to configure 
GPS and GLONASS start mode, so if you configured by this 
command, you should reboot the device.   
SIM PIN References 
NO 
Vendor 
Syntax 
Test Command  Responses 
AT+CGPSMODE=?  +CGPSMODE: (scope of <mode>) 
OK 
Read Command  Responses 
AT+CGPSMODE?  +CGPSMODE: <mode> 
OK 
Write Command  Responses 
AT+CGPSMODE=<mode> 
OK 
ERROR 
Defined values 
<mode> 
0 – GPS and GLONASS hybrid, DPO is enabled, when position fixed, GLONASS will be closed 
1 – GPS only 
2 – GPS and GLONASS hybrid,DPO is disabled   
Default value is 0 
Examples 
AT+CGPSMODE=0 
OK 
16.21  AT+CBDS    Enable/Disable BEIDOU session 
Description   
This command is used to enable or disable BEIDOU session. 
It will take effect only after restarting. 
SIM PIN References 
NO  Vendor 
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Syntax 
Test Command Responses 
AT+CBDS=?  +CBDS: (scope of <mode>) 
OK 
Read Command  Responses 
AT+CBDS?  +CBDS: <mode> 
OK 
Write Command 
Responses 
AT+CBDS=<mode> OK 
ERROR 
Defined values 
<mode> 
0  – disable BEIDOU session 
1  –enable BEIDOU session 
Examples 
AT+CBDS=0 
OK 
16.22  Unsolicited XTRA download Codes   
Code of <err> Description 
0  Assistant file download successfully 
1 
Assistant file doesn’t exist 
2  Assistant file check error 
220  Unknown error for HTTP 
221  HTTP task is busy 
222 
Failed to resolve server address 
223  HTTP timeout 
224  Failed to transfer data 
225  Memory error 
226  Invalid parameter 
227 
Network error 
220~227 codes are same as Unsolicited HTTP codes 
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17   Appendixes 
17.1   Verbose code and numeric code 
Verbose result code Numeric (V0 set) Description 
OK  0  Command executed, no errors, Wake up after reset 
CONNECT  1  Link established 
RING  2  Ring detected 
NO CARRIER 
3 
Link not established or disconnected 
ERROR 
4 
Invalid command or command line too long 
NO DIALTONE  6  No dial tone, dialing impossible, wrong mode 
BUSY  7  Remote station busy 
NO ANSWER  8  Connection completion timeout 
17.2  Response string of AT+CEER 
Number 
Response string 
CS internal cause  
0  Phone is offline 
21 
No service available 
25  Network release, no reason given 
27 
Received incoming call 
29  Client ended call 
34  UIM not present 
35 
Access attempt already in progress 
36  Access failure, unknown source 
38 
Concur service not supported by network 
29  No response received from network 
45  GPS call ended for user call 
46 
SMS call ended for user call 
47  Data call ended for emergency call 
48 
Rejected during redirect or handoff 
100  Lower-layer ended call 
101  Call origination request failed 
102 
Client rejected incoming call 
103  Client rejected setup indication 
104 
Network ended call 
105  No funds available 
106  No service available 
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108  Full service not available 
109 
Maximum packet calls exceeded 
301 
Video connection lost 
302  Video call setup failure 
303  Video protocol closed after setup 
304  Video protocol setup failure 
305  Internal error 
CS network cause  
1  Unassigned/unallocated number 
3  No route to destination 
6 
Channel unacceptable 
8  Operator determined barring 
16  Normal call clearing 
17  User busy 
18  No user responding 
19 
User alerting, no answer 
21 
Call rejected 
22  Number changed 
26  Non selected user clearing 
27  Destination out of order 
28  Invalid/incomplete number 
29 
Facility rejected 
30  Response to Status Enquiry 
31  Normal, unspecified 
34  No circuit/channel available 
38 
Network out of order 
41  Temporary failure 
42  Switching equipment congestion 
43  Access information discarded 
44  Requested circuit/channel not available 
47 
Resources unavailable, unspecified 
49 
Quality of service unavailable 
50  Requested facility not subscribed 
55  Incoming calls barred within the CUG 
57  Bearer capability not authorized 
58  Bearer capability not available 
63 
Service/option not available 
65  Bearer service not implemented 
68  ACM >= ACMmax 
69  Requested facility not implemented 
70 
Only RDI bearer is available 
79  Service/option not implemented 
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81  Invalid transaction identifier value 
87 
User not member of CUG 
88 
Incompatible destination 
91  Invalid transit network selection 
95  Semantically incorrect message 
96  Invalid mandatory information 
97  Message non-existent/not implemented 
98 
Message type not compatible with state 
99  IE non-existent/not implemented 
100  Conditional IE error 
101  Message not compatible with state 
102 
Recovery on timer expiry 
111  Protocol error, unspecified 
117  Interworking, unspecified 
CS network reject  
2 
IMSI unknown in HLR 
3 
Illegal MS 
4  IMSI unknown in VLR 
5  IMEI not accepted 
6  Illegal ME 
7  GPRS services not allowed 
8 
GPRS & non GPRS services not allowed 
9  MS identity cannot be derived 
10  Implicitly detached 
11  PLMN not allowed 
12 
Location Area not allowed 
13  Roaming not allowed 
14  GPRS services not allowed in PLMN 
15  No Suitable Cells In Location Area 
16  MSC temporarily not reachable 
17 
Network failure 
20 
MAC failure 
21  Synch failure 
22  Congestion 
23  GSM authentication unacceptable 
32  Service option not supported 
33 
Requested service option not subscribed 
34  Service option temporarily out of orde 
38  Call cannot be identified 
40  No PDP context activated 
95 
Semantically incorrect message 
96  Invalid mandatory information 
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97  Message type non-existent 
98 
Message type not compatible with state 
99 
Information element non-existent 
101  Message not compatible with state 
161  RR release indication 
162  RR random access failure 
163  RRC release indication 
164 
RRC close session indication 
165  RRC open session failure 
166  Low level failure 
167  Low level failure no redial allowed 
168 
Invalid SIM 
169  No service 
170  Timer T3230 expired 
171  No cell available 
172  Wrong state 
173 
Access class blocked 
174 
Abort message received 
175  Other cause 
176  Timer T303 expired 
177  No resources 
178  Release pending 
179 
Invalid user data 
PS internal cause lookup 
0  Invalid connection identifier 
1 
Invalid NSAPI 
2  Invalid Primary NSAPI 
3  Invalid field 
4  SNDCP failure 
5  RAB setup failure 
6 
No GPRS context 
7 
PDP establish timeout 
8  PDP activate timeout 
9  PDP modify timeout 
10  PDP inactive max timeout 
11 PDP lowerlayer error 
12 
PDP duplicate 
13  Access technology change 
14  PDP unknown reason 
PS network cause 
25  LLC or SNDCP failure 
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26  Insufficient resources 
27 
Missing or unknown APN 
28 
Unknown PDP address or PDP type 
29  User Aauthentication failed 
30  Activation rejected by GGSN 
31  Activation rejected, unspecified 
32  Service option not supported 
33 
Requested service option not subscribed 
34  Service option temporarily out of order 
35  NSAPI already used (not sent) 
36  Regular deactivation 
37 
QoS not accepted 
38  Network failure 
39  Reactivation required 
40  Feature not supported 
41  Semantic error in the TFT operation 
42 
Syntactical error in the TFT operation 
43 
Unknown PDP context 
44  PDP context without TFT already activated 
45  Semantic errors in packet filter 
46  Syntactical errors in packet filter 
81  Invalid transaction identifier 
95 
Semantically incorrect message 
96  Invalid mandatory information 
97  Message non-existent/not implemented 
98  Message type not compatible with state 
99 
IE non-existent/not implemented 
100  Conditional IE error 
101  Message not compatible with state 
111  Protocol error, unspecified 
17.3  Summary of CME ERROR codes 
Description 
This result code is similar to the regular ERROR result code. The format of <err> can be either 
numeric or verbose string, by setting AT+CMEE command. 
SIM PIN References 
NO 
3GPP TS 27.007 
Syntax 
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+CME ERROR: <err> 
Defined values 
<err> 
Values (numeric format followed by verbose format): 
0    phone failure 
1    no connection to phone 
2    phone adaptor link reserved 
3    operation not allowed 
4    operation not supported 
5    PH-SIM PIN required 
6    PH-FSIM PIN required 
7    PH-FSIM PUK required 
10    SIM not inserted 
11    SIM PIN required 
12    SIM PUK required 
13    SIM failure 
14    SIM busy 
15    SIM wrong 
16    incorrect password 
17    SIM PIN2 required 
18    SIM PUK2 required 
20    memory full 
21    invalid index 
22    not found 
23    memory failure 
24    text string too long 
25    invalid characters in text string 
26    dial string too long 
27    invalid characters in dial string 
30    no network service 
31    network timeout 
32    network not allowed - emergency calls only 
40    network personalization PIN required 
41    network personalization PUK required 
42    network subset personalization PIN required 
43    network subset personalization PUK required 
44    service provider personalization PIN required 
45    service provider personalization PUK required 
46    corporate personalization PIN required 
47    corporate personalization PUK required 
100    Unknown 
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103    Illegal MESSAGE 
106    Illegal ME 
107    GPRS services not allowed   
111    PLMN not allowed   
112    Location area not allowed   
113    Roaming not allowed in this location area   
132    service option not supported   
133    requested service option not subscribed   
134    service option temporarily out of order 
148    unspecified GPRS error 
149    PDP authentication failure 
150    invalid mobile class 
257    network rejected request 
258     retry operation 
259    invalid deflected to number 
260     deflected to own number      
261    unknown subscriber 
262   service not available 
263    unknown class specified 
264     unknown network message 
273          minimum TFTS per PDP address violated 
274     TFT precedence index not unique 
275     invalid parameter combination 
“CME ERROR” codes of MMS: 
170          Unknown error for mms 
171          MMS task is busy now 
172          The mms data is over size 
173          The operation is overtime 
174          There is no mms receiver 
175     The storage for address is full 
176          Not find the address 
177     Invalid parameter 
178     Failed to read mss 
179          There is not a mms push message 
180     Memory error 
181     Invalid file format 
182          The mms storage is full 
183          The box is empty 
184     Failed to save mms 
185     It’s busy editing mms now 
186          It’s not allowed to edit now 
187          No content in the buffer 
188     Failed to receive mms 
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189     Invalid mms pdu 
190     Network error 
191     Failed to read file 
192     None 
“CME ERROR” codes of    FTP: 
201 Unknown error for FTP 
202 FTP task is busy 
203 Failed to resolve server address 
204 FTP timeout 
205 Failed to read file 
206 Failed to write file 
207 It’s not allowed in current state 
208 Failed to login 
209 Failed to logout 
210 Failed to transfer data 
211 FTP command rejected by server 
212 Memory error 
213 Invalid parameter 
214 Network error 
Examples 
AT+CPIN="1234","1234" 
+CME ERROR: incorrect password 
17.4  Summary of CMS ERROR codes 
Description 
Final result code +CMS ERROR: <err> 
indicates an error related to mobile equipment or network. 
The operation is similar to ERROR result code. None of the following commands in the same 
command line is executed. Neither ERROR nor OK result code shall be returned. ERROR is 
returned normally when error is related to syntax or invalid parameters. The format of <err> can be 
either numeric or verbose. This is set with command AT +CMEE. 
SIM PIN References 
---  3GPP TS 27.005 
Syntax 
+CMS ERROR: <err> 
Defined values 
<err> 
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300  ME failure 
301  SMS service of ME reserved 
302  Operation not allowed 
303  Operation not supported 
304  Invalid PDU mode parameter 
305  Invalid text mode parameter 
310  SIM not inserted 
311  SIM PIN required 
312  PH-SIM PIN required 
313  SIM failure 
314  SIM busy 
315  SIM wrong 
316  SIM PUK required 
317  SIM PIN2 required 
318  SIM PUK2 required 
320  Memory failure 
321  Invalid memory index 
322  Memory full 
330  SMSC address unknown 
331  no network service 
332  Network timeout 
340  NO +CNMA ACK EXPECTED 
341   Buffer overflow 
342    SMS size more than expected 
500  unknown error 
Examples 
AT+CMGS=02112345678 
+CMS ERROR: 304 
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Contact us: 
Shanghai SIMCom Wireless Solutions Ltd. 
Add: Building A, SIM Technology Building, No.633, Jinzhong Road, Changning District 
    200335 
Tel: 86-21-32523300 
Fax: 86-21-32523020 
Email: simcom@sim.com 
Website: www.simcomm2m.com 
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