AT Commands Set SIM7500 SIM7600 Series Command Manual V1.10

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SIM7500_SIM7600
Command Manual _V1.10

Series_AT

Smart Machine Smart Decision

Document Title:

SIM7500_SIM7600 Series_AT Command Manual

Version:

1.10

Date:

2018-10-08

Status:

Release

Document ID:

SIM7500_SIM7600 Series_AT Command Manual_V1.10

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. 2018

SIM7500_SIM7600 Series_AT Command Manual_V1.10

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Smart Machine Smart Decision

Version History
Version

Date

Chapter

What is new

V1.00

2016-07-08

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+CSSN

Add note.

V1.01

2016-07-21

11.2

AT+STGI

Add PDU format support

V1.01

2016-07-21

11.3

AT+STGR

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+CTZU

Modify this command

V1.02

2016-07-27

5.19

AT+CTZR

Modify this command

V1.02

2016-07-27

5.16

AT+CPSI

Modify this command

V1.02

2016-07-27

9.15

AT+CGAUTH

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+CTZU

Modify this command

V1.02

2016-07-29

5.18

AT+CTZR

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+CGDRT

Modify this command

V.1.02

2016-07-29

12.7

AT+CGGRTV

Modify this command

V.1.02

2016-07-29

12.8

AT+CGSETV

Modify this command

V1.02

2016-07-29

5.15

AT+CPSI

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

V1.02

2016-08-05

11.5

New version

AT+STKFMT

SIM7500_SIM7600 Series_AT Command Manual_V1.10

Delete CSD function
Set STK pdu Modify this command

2

2018-10-08

Smart Machine Smart Decision

format
V1.02

2016-08-05

5.15
AT+CPSI
system information

Inquiring UE Modify 1xlte

V1.02

2016-08-05

9.11 AT+CGDATA Enter data state Modify cid

V1.02

2016-08-05

9.3 AT+CGACT
PDP
activate or deactivate

V1.02

2016-08-05

7.9
AT+CNMI
indications to TE

V1.02

2016-08-12

7.25
AT+CMGP Set cdma/evdo Modify format
text mode parameters

V1.02

2016-08-16

15.7 Common Channel Service
Modify these commands
15.8
SSL Certificate & Key
management

V1.02

2016-08-16

6.29
6.30

V1.02

2016-08-17

11.7 AT+STSM Get STK Setup Modify this command
Menu List with PDU Mode

V1.02

2016-08-17

5.14 AT+CNSDP Preferred service Delete this command
domain selection

V1.02

2016-08-19

AT+CMGENREF
AT+CMSSEXM
AT+CSALPHA

Delete this command

V1.02

2016-08-26

15.1.6

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
15.7.7
15.7.8

V1.02

2016-09-05

15.7.10
Unsolicited
common Add error code description
channel command  Codes

V1.02

2016-09-06

6.27
6.28
6.29
6.30

AT+CMICGAIN
AT+COUTGAIN
AT+CTXVOL
AT+CTXMICGAIN

Modify these commands

V1.02

2016-09-06

6.31
6.32
6.33
6.34

AT+CRXVOL
AT+CECH
AT+CECDT
AT+CECWB

Add these commands

New

context Modify cid
message Modify default value

AT+CTXVOL
AT+CTXMICGAIN

Add commands

AT+CPINGSTOP

AT+CCHOPEN
AT+CCHSET
AT+CCHADDR

SIM7500_SIM7600 Series_AT Command Manual_V1.10

Modify these commands

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Smart Machine Smart Decision

6.35
6.36
6.37
6.38
6.39

AT+CNSN
AT+CNSLIM
AT+CFNSMOD
AT+CFNSIN
AT+CFNSLVL

V1.02

2016-09-06

12.6
12.7
12.8
12.9

AT+CGDRT
AT+CGSETV
AT+CGGETV
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+CNMP

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+CSDVC

Modify this command

V1.02

2016-09-18

6.40
6.41
6.42

AT+CECRX
AT+CNLPPG
AT+CNLPPL

Add these commands

V1.02

2016-09-19

7.2

V1.02

2016-09-21

10.6

AT+CMTE

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

V1.02

2016-09-22

15.7.10
Unsolicited
common Modify the format
channel command  Codes

V1.02

2016-09-26

6.25

V1.02

2016-09-27

15.2.10

V1.02

2016-09-28

3.33

AT+CIMI

Modify this command

V1.02

2016-09-28

3.34

AT+CIMIM

Add this command

V1.02

2016-09-28

7.13
7.15
7.20

AT+CMGS
AT+CMGW
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

AT+CPMS

Modify this command

AT+CCHRECV

Modify this command

AT+CACDBFN

Modify this command

AT+CIPFILTERSET

SIM7500_SIM7600 Series_AT Command Manual_V1.10

Modify this command

4

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Smart Machine Smart Decision

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+CDNSSRV

Modify these commands

V1.02

2016-10-18

7.2

Modify this command

V1.02

2016-10-19

3.21

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

V1.02

2016-11-09

11.4

AT+STK

Modify this command

V1.02

2016-11-04

6.22

AT+CSDVC

Modify this command

V1.02

2016-11-04

16.21

AT+CBDS

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

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+CGDATA

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+CBDS

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+CFTPCACHERD

Modify these commands

V1.03

2016-11-24

15.7.3
15.7.6

Modify these commands

AT+CPMS
AT&F

Modify this command

AT+CGPSMODE

Add this command

Add this command

AT+CFTPCACHERD

AT+CCHOPEN
AT+CCHRECV

SIM7500_SIM7600 Series_AT Command Manual_V1.10

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Smart Machine Smart Decision

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+CNBP
5.14 AT+CPSI

Modify these commands

V1.03

2017-1-4

9.12

Modify this command

V1.03

2017-1-11

16.10

V1.03

2017-1-12

5.14

V1.04

2017-1-20

15.7.6

V1.04

2017-2-9

6.26
6.43

V1.04

2017-2-9

15.7.6

V1.04

2017-2-20

5.12

AT+CNBP

Modify this command

V1.04

2017-2-21

3.12
12.1

AT+IPR
AT+IPREX

Modify these commands

V1.04

2017-3-8

3.21

AT&F

Modify this command

V1.04

2017-3-28

17.24

V1.04

2017-4-13

17.9

AT+CGPSNEMARATE

Add this command

V1.04

2017-4-14

15.5

HTTPS

Add this chapter

V1.04

2017-4-19

17.25

V1.04

2017-5-4

4.23

V1.04

2017-5-11

17.26

V1.04

2017-5-17

16 AT Commands for Open/Close Add this chapter
Network

V1.04

2017-5-24

18

V1.04

2017-5-25

15.7

SMTP

Delete this chapter

V1.04

2017-5-25

15.4

FTPS

Add this chapter

V1.05

2017-6-19

15.6

HTTPS

Modify HTTPS commands

V1.05

2017-7-3

16.4
Unsolicited
CNETSTOP Codes

V1.05

2017-7-3

17.24
17.25

AT+CLBS
AT+CLBSCFG

V1.05

2017-7-10

14.2

AT+CFTRANTX

V1.05

2017-7-10

13

V1.05

2017-7-11

6.44

V1.05

2017-7-14

15.8.9

AT+CGPADDR
AT+CGPSFTM

Modify this command

AT+CPSI

Modify this command

AT+CCHRECV

Modify this command

AT+CPCMREG
AT+CECM

Modify these commands

AT+CCHRECV

Modify this command

AT+CLBS

Add this command

AT+CLBSCFG

Add this command

AT+CUSBPIDSWITCH

Modify this command

AT+CASSISTLOC

Add this command

Audio Application Commands

Add this chapter

CNETSTART/ Add this command
Modify these commands
Modify this command

AT Commands for File System

Modify the description

AT+CPCMFRM

Add this command

AT+CCERTVERIFY

SIM7500_SIM7600 Series_AT Command Manual_V1.10

Add this command

6

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Smart Machine Smart Decision

V1.05

2017-8-25

7.12

AT+CMGR

Modify this command

V1.05

2017-9-5

5.15

AT+CNSMOD

Modify this command

V1.05

2017-9-5

5.14

AT+CPSI

Modify this command

V1.06

2017-10-13

1.1

V1.06

2017-10-13

17.24

AT+CLBS

Modify this command

V1.07

2017-10-16

15.3.2

AT+CFTPMODE

Modify this command

V1.07

2017-10-16

15.6.4

AT+CHTTPSCLSE

Modify this command

V1.07

2017-11-3

7.9

V1.07

2017-11-7

12.2

AT+CFGRI

Modify this command

V1.07

2017-11-13

17.25

AT+CLBS

Modify this command

V1.07

2017-11-13

15.8

V1.07

2017-11-13

17.23

V1.07

2017-12-14

4.23

V1.07

2017-12-15

17.25

V1.08

2017-12-18

17.8

V1.08

2017-12-18

17.24

AT+CGNSSMODE

Add this command

V1.08

2018-1-10

17.26

AT+CLBS

Modify this command

V1.08

2018-1-24

17.21

AT+CGPSMODE

Delete this command

V1.08

2018-1-24

17.22

AT+CBDS

Delete this command

V1.08

2018-1-24

15.8.2

Unsolicited NTP Codes

Delete this command

V1.08

2018-2-8

15.10.1

AT+CCERTDOWN

Modify this command

V1.08

2018-2-9

15.8.1

V1.08

2018-2-28

13

V1.08

2018-3-2

15.10.1
15.10.2
15.10.3

V1.08

2018-3-13

15.6.5

AT+CHTTPSSEND

Modify this command

V1.08

2018-3-20

15.5.1

AT+CHTTPACT

Modify this command

V1.08

2018-3-28

15.6.9 Unsolicited HTTPS command Modify this command
 Codes

V1.08

2018-4-2

17.8

V1.08

2018-4-2

17.22

AT+CGNSSMODE

Modify this command

V1.08

2018-4-2

15.6.5

AT+CHTTPSSEND

Modify this command

V1.09

2018-4-17

6.45

Scope

Modify scope

AT+CNMI

Modify this command

NTP

Add this chapter

AT+CGNSSINFO

Add this command

AT+CUSBPIDSWITCH

Modify this command

AT+CLBS

Modify this command

AT+CGPSNMEA

Modify this command

AT+CNTP

Modify this command

AT Commands for File System

Modify this chapter

AT+CCERTDOWN
AT+CCERTLIST
AT+CCERTDELE

Modify these commands

AT+CGPSNMEA

Modify this command

AT+CPTONE

SIM7500_SIM7600 Series_AT Command Manual_V1.10

Add this command

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Smart Machine Smart Decision

V1.09

2018-4-18

15.3.16

AT+CFTPSINGLEIP

Add this command

V1.09

2018-5-2

17.24

AT+CLBS

Modify this command

V1.09

2018-5-3

15.2.1

AT+CIPCCFG

Modify this command

V1.09

2018-5-4

17.25

AT+CLBSCFG

Modify this command

V1.09

2018-5-7

15.6.5
15.6.5

AT+CHTTPSSEND
AT+CHTTPSRECV

Modify these commands

V1.09

2018-5-9

15.10.2

AT+CCERTLIST

V1.09

2018-5-21

15.8.1

V1.09

2018-5-31

4.23

AT+CUSBPIDSWITCH

Modify this command

V1.09

2018-6-5

4.23

AT+CUSBPIDSWITCH

Modify this command

V1.09

2018-7-10

15.2.10

V1.09

2018-7-11

15.8.1

V1.09

2018-7-25

15.9 Common Channel Service
Add mbedtls
15.10
SSL Certificate & Key
Management

V1.09

2018-8-3

15.6.5
15.6.6

AT+CHTTPSSEND
AT+CHTTPSRECV

Modify these commands

V1.09

2018-8-3

15.9.9

AT+CCHMODE

Add this command

V1.10

2018-8-16

4.23

AT+CUSBPIDSWITCH

Modify this command

V1.10

2018-8-22

18.3
18.5

AT+CCMXSTOPWAV
AT+CCMXSTOP

Modify these commands

V1.10

2018-8-24

15.9 Common Channel Service
Delete these chapters
15.10
SSL Certificate & Key
Management

V1.10

2018-9-11

17.25
17.26

V1.10

2018-9-12

15.2
15.3
15.4
15.5
15.6

V1.10

2018-9-17

17.11 AT+CGPSFTM
17.13 AT+CGPSXE
17.16 AT+CGPSINFOCFG

Modify this command

AT+CNTP

Modify this command

AT+CIPFILTERSET

Delete this command

AT+CNTP

Modify this command

AT+CLBSCFG
AT+CASSISTLOC

Modify these commands

TCP/UDP
FTP
FTPS
HTTP
HTTPS

SIM7500_SIM7600 Series_AT Command Manual_V1.10

Delete these chapters

Modify these commands

8

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Contents
V e r s i o n H i s t o r y ........................................................................................................................... 2
C o n t e n t s ............................................................................................................................................ 9
1 Introduction.................................................................................................................................... 16

2

3

1.1

Scope .................................................................................................................................................... 16

1.2

References ............................................................................................................................................ 16

1.3

Terms and abbreviations ....................................................................................................................... 16

1.4

Definitions and conventions ................................................................................................................. 17

AT Interface Synopsis .................................................................................................................... 19
2.1

Interface settings .................................................................................................................................. 19

2.2

AT command syntax ............................................................................................................................. 19

2.3

Information responses .......................................................................................................................... 20

AT Commands According V.25TER .............................................................................................. 21
3.1

A/ Repeat last command.................................................................................................................... 21

3.2

ATD Dial command .......................................................................................................................... 21

3.3

ATD> Originate call from specified memory ................................................................. 23

3.4

ATD> Originate call from active memory (1)............................................................................. 24

3.5

ATD> Originate call from active memory (2)........................................................................... 25

3.6

ATA Call answer................................................................................................................................ 26

3.7

ATH Disconnect existing call ............................................................................................................ 27

3.8

ATS0 Automatic answer incoming call ............................................................................................. 27

3.9

+++ Switch from data mode to command mode ............................................................................... 28

3.10

ATO Switch from command mode to data mode .............................................................................. 29

3.11

ATI Display product identification information ................................................................................ 29

3.12

AT+IPR Set local baud rate temporarily ........................................................................................... 31

3.13

AT+ICF Set control character framing .............................................................................................. 32

3.14

AT+IFC Set local data flow control................................................................................................... 33

3.15

AT&C Set DCD function mode......................................................................................................... 34

3.16

ATE

3.17

AT&V Display current configuration ................................................................................................ 35

3.18

AT&D Set DTR function mode ......................................................................................................... 36

3.19

AT&S Set DSR function mode .......................................................................................................... 36

3.20

ATV Set result code format mode ..................................................................................................... 37

3.21

AT&F Set all current parameters to manufacturer defaults ............................................................... 38

3.22

ATQ Set Result Code Presentation Mode.......................................................................................... 39

3.23

ATX Set CONNECT Result Code Format ........................................................................................ 39

3.24

AT\V Set CONNECT Result Code Format About Protocol .............................................................. 40

3.25

AT&E Set CONNECT Result Code Format About Speed ................................................................ 41

3.26

AT&W Save the user setting to ME .................................................................................................. 42

3.27

ATZ

3.28

AT+CGMI

3.29

AT+CGMM Request model identification ........................................................................................ 44

Enable command echo .............................................................................................................. 35

Restore the user setting from ME.............................................................................................. 42
Request manufacturer identification ............................................................................... 43

SIM7500_SIM7600 Series_AT Command Manual_V1.10

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Smart Machine Smart Decision

4

5

3.30

AT+CGMR Request revision identification ...................................................................................... 44

3.31

AT+CGSN

Request product serial number identification ................................................................. 45

3.32

AT+CSCS

Select TE character set .................................................................................................... 46

3.33

AT+CIMI

Request international mobile subscriber identity ............................................................. 47

3.34

AT+CIMIM Request another international mobile subscriber identity ............................................. 47

3.35

AT+GCAP Request overall capabilities ............................................................................................ 48

AT Commands for Status Control .................................................................................................. 50
4.1

AT+CFUN

Set phone functionality ................................................................................................... 50

4.2

AT+CPIN

Enter PIN.......................................................................................................................... 51

4.3

AT+CICCID Read ICCID from SIM card......................................................................................... 52

4.4

AT+CSIM Generic SIM access ......................................................................................................... 53

4.5

AT+CRSM Restricted SIM access .................................................................................................... 54

4.6

AT+SPIC Times remain to input SIM PIN/PUK ............................................................................... 58

4.7

AT+CSPN Get service provider name from SIM .............................................................................. 59

4.8

AT+CSQ Query signal quality .......................................................................................................... 60

4.9

AT+AUTOCSQ

4.10

AT+CSQDELTA Set RSSI delta change threshold............................................................................ 62

4.11

AT+CATR Configure URC destination interface .............................................................................. 63

4.12

AT+CPOF Power down the module .................................................................................................. 64

4.13

AT+CRESET Reset the module ........................................................................................................ 65

4.14

AT+CACM Accumulated call meter ................................................................................................. 65

4.15

AT+CAMM Accumulated call meter maximum ............................................................................... 66

4.16

AT+CPUC Price per unit and currency table..................................................................................... 67

4.17

AT+CCLK

4.18

AT+CMEE Report mobile equipment error ...................................................................................... 69

4.19

AT+CPAS

Phone activity status ........................................................................................................ 70

4.20

AT+SIMEI

Set IMEI for the module ................................................................................................. 71

4.21

AT+SMEID Request Mobile Equipment Identifier ........................................................................... 72

4.22

AT+CSVM Voice Mail Subscriber number ....................................................................................... 73

4.23

AT+CUSBPIDSWITCH Change module’s PID................................................................................ 74

4.24

Indication of EONS .............................................................................................................................. 75

4.25

Indication of Voice Mail ....................................................................................................................... 76

Set CSQ report........................................................................................................ 61

Real time clock management .......................................................................................... 68

AT Commands for Network ........................................................................................................... 77
5.1

AT+CREG Network registration ....................................................................................................... 77

5.2

AT+COPS Operator selection ........................................................................................................... 78

5.3

AT+CLCK

5.4

AT+CPWD Change password ........................................................................................................... 82

5.5

AT+CCUG Closed user group ........................................................................................................... 84

5.6

AT+CUSD Unstructured supplementary service data ....................................................................... 85

5.7

AT+CAOC Advice of charge ............................................................................................................ 86

5.8

AT+CSSN Supplementary service notifications................................................................................ 87

5.9

AT+CPOL Preferred operator list ...................................................................................................... 89

5.10

AT+COPN

Facility lock .................................................................................................................... 81

Read operator names ...................................................................................................... 91

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5.11

AT+CNMP Preferred mode selection ................................................................................................ 92

5.12

AT+CNBP Preferred band selection .................................................................................................. 93

5.13

AT+CNAOP Acquisitions order preference ...................................................................................... 96

5.14

AT+CPSI Inquiring UE system information ..................................................................................... 97

5.15

AT+CNSMOD Show network system mode ................................................................................... 101

5.16

AT+CEREG EPS network registration status.................................................................................. 102

5.17

AT+CTZU Automatic time and time zone update........................................................................... 104

5.18

AT+CTZR Time and time zone reporting ....................................................................................... 105

5.19

AT+NETMODE WCDMA & TDSCDMA mode select .................................................................. 106

AT Commands for Call Control ................................................................................................... 108
6.1

AT+CVHU Voice hang up control .................................................................................................. 108

6.2

AT+CHUP Hang up call .................................................................................................................. 109

6.3

AT+CBST Select bearer service type .............................................................................................. 109

6.4

AT+CRLP Radio link protocol ......................................................................................................... 111

6.5

AT+CR Service reporting control.....................................................................................................112

6.6

AT+CRC Cellular result codes .........................................................................................................114

6.7

AT+CLCC List current calls............................................................................................................. 115

6.8

AT+CEER Extended error report .....................................................................................................117

6.9

AT+CCWA Call waiting ................................................................................................................... 118

6.10

AT+CHLD Call related supplementary services .............................................................................. 119

6.11

AT+CCFC Call forwarding number and conditions ........................................................................ 121

6.12

AT+CLIP Calling line identification presentation ........................................................................... 122

6.13

AT+CLIR Calling line identification restriction .............................................................................. 124

6.14

AT+COLP Connected line identification presentation .................................................................... 125

6.15

AT+VTS DTMF and tone generation .............................................................................................. 127

6.16

AT+VTD

6.17

AT+CSTA Select type of address .................................................................................................... 129

6.18

AT+CMOD Call mode .................................................................................................................... 130

6.19

AT+VMUTE Speaker mute control ................................................................................................ 131

6.20

AT+CMUT Microphone mute control............................................................................................. 132

6.21

AT+MORING Enable or disable report MO ring URC................................................................... 132

6.22

AT+CSDVC Switch voice channel device ...................................................................................... 133

6.23

AT+CLVL Loudspeaker volume level............................................................................................. 134

6.24

AT+SIDET Set sidetone .................................................................................................................. 135

6.25

AT+CACDBFN

6.26

AT+CPCMREG USB audio control ................................................................................................ 137

6.27

AT+CMICGAIN Adjust mic gain ................................................................................................... 138

6.28

AT+COUTGAIN Adjust out gain ................................................................................................... 139

6.29

AT+CTXVOL Adjust TX voice mic volume .................................................................................. 139

6.30

AT+CTXMICGAIN Adjust TX voice mic gain .............................................................................. 140

6.31

AT+CRXVOL Adjust RX voice output speaker volume................................................................. 141

6.32

AT+CECH Inhibit far-end echo....................................................................................................... 142

6.33

AT+CECDT Inhibit echo during doubletalk ................................................................................... 143

Tone duration .................................................................................................................. 128

Change default ACDB filename ........................................................................... 136

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6.34

AT+CECWB Inhibit echo in the high band ..................................................................................... 144

6.35

AT+CNSN MIC NOISE suppression .............................................................................................. 145

6.36

AT+CNSLIM MIC NOISE suppression .......................................................................................... 145

6.37

AT+CFNSMOD Adjust parameter fnsMode of RX_VOICE_FNS ................................................. 146

6.38

AT+CFNSIN

6.39

AT+CFNSLVL Adjust parameter fnsTargetNS of RX_VOICE_FNS ............................................. 148

6.40

AT+CECRX Enable or disable VOICE_MOD_ENABLE .............................................................. 149

6.41

AT+CNLPPG Modify the NLPP_gain in DSP ................................................................................ 150

6.42

AT+CNLPPL Modify the NLPP_limit in DSP ................................................................................ 150

6.43

AT+CECM Adjust echo canceller ................................................................................................... 151

6.44

AT+CPCMFRM

6.45

AT+CPTONE Play tone .................................................................................................................. 153

Adjust parameter fnsInputGain of RX_VOICE_FNS ............................................... 147

Set usb audio sample rate to 16k bit .................................................................... 152

AT Commands for SMS............................................................................................................... 155
7.1

AT+CSMS

Select message service.................................................................................................. 155

7.2

AT+CPMS

Preferred message storage ............................................................................................ 156

7.3

AT+CMGF Select SMS message format ......................................................................................... 158

7.4

AT+CSCA SMS service centre address ........................................................................................... 159

7.5

AT+CSCB Select cell broadcast message indication....................................................................... 160

7.6

AT+CSMP Set text mode parameters .............................................................................................. 161

7.7

AT+CSDH

7.8

AT+CNMA New message acknowledgement to ME/TA ................................................................ 163

7.9

AT+CNMI New message indications to TE .................................................................................... 164

7.10

AT+CGSMS Select service for MO SMS messages ....................................................................... 166

7.11

AT+CMGL List SMS messages from preferred store ..................................................................... 167

7.12

AT+CMGR Read message .............................................................................................................. 171

7.13

AT+CMGS Send message ............................................................................................................... 175

7.14

AT+CMSS

7.15

AT+CMGW Write message to memory .......................................................................................... 177

7.16

AT+CMGD Delete message ............................................................................................................ 179

7.17

AT+CMGMT Change message status ............................................................................................. 180

7.18

AT+CMVP Set message valid period .............................................................................................. 181

7.19

AT+CMGRD Read and delete message .......................................................................................... 182

7.20

AT+CMGSEX Send message.......................................................................................................... 183

7.21

AT+CMSSEX Send multi messages from storage .......................................................................... 184

7.22

AT+CMGP Set cdma/evdo text mode parameters ........................................................................... 185

Show text mode parameters .......................................................................................... 162

Send message from storage .......................................................................................... 176

AT Commands for Phonebook ..................................................................................................... 187
8.1

AT+CPBS

Select phonebook memory storage ................................................................................ 187

8.2

AT+CPBR Read phonebook entries ................................................................................................ 188

8.3

AT+CPBF

8.4

AT+CPBW Write phonebook entry ................................................................................................. 191

8.5

AT+CNUM Subscriber number....................................................................................................... 192

Find phonebook entries ................................................................................................. 190

AT Commands for GPRS ............................................................................................................. 194
9.1

AT+CGREG GPRS network registration status .............................................................................. 194

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9.2

AT+CGATT Packet domain attach or detach .................................................................................. 195

9.3

AT+CGACT PDP context activate or deactivate ............................................................................. 196

9.4

AT+CGDCONT Define PDP context .............................................................................................. 197

9.5

AT+CGDSCONT Define Secondary PDP Context ......................................................................... 199

9.6

AT+CGTFT Traffic Flow Template ................................................................................................ 202

9.7

AT+CGQREQ Quality of service profile (requested) ..................................................................... 205

9.8

AT+CGEQREQ 3G quality of service profile (requested) .............................................................. 207

9.9

AT+CGQMIN Quality of service profile (minimum acceptable) .................................................... 212

9.10

AT+CGEQMIN 3G quality of service profile (minimum acceptable) ............................................ 215

9.11

AT+CGDATA Enter data state......................................................................................................... 219

9.12

AT+CGPADDR

Show PDP address ................................................................................................ 220

9.13

AT+CGCLASS

GPRS mobile station class .................................................................................. 222

9.14

AT+CGEREP GPRS event reporting .............................................................................................. 223

9.15

AT+CGAUTH Set type of authentication for PDP-IP connections of GPRS.................................. 225

10

Hardware Related Commands ................................................................................................. 227

10.1

AT+CVALARM

10.2

AT+CVAUXS Set state of the pin named VREG_AUX1 ............................................................... 228

Low and high voltage Alarm................................................................................ 227

10.3

AT+CVAUXV Set voltage value of the pin named VREG_AUX1 ................................................. 229

10.4

AT+CADC Read ADC value........................................................................................................... 230

10.5

AT+CADC2 Read ADC2 value ....................................................................................................... 230

10.6

AT+CMTE Control the module whether power shutdown when the module’s temperature upon the

critical temperature ......................................................................................................................................... 231
10.7

AT+CPMVT Low and high voltage Power Off ............................................................................... 233

10.8

AT+CDELTA Set the module go to recovery mode ........................................................................ 234

10.9

AT+CRIIC Read values from register of IIC device ....................................................................... 234

10.10 AT+CWIIC Write values to register of IIC device .......................................................................... 235
10.11 AT+CBC Read the voltage value of the power supply .................................................................... 236
10.12 AT+CPMUTEMP Read the temperature of the module .................................................................. 236

11

AT Commands for SIM Application Toolkit ............................................................................ 238

11.1

AT+STIN SAT Indication ................................................................................................................ 238

11.2

AT+STGI Get SAT information ...................................................................................................... 239

11.3

AT+STGR SAT respond .................................................................................................................. 242

11.4

AT+STK STK switch ...................................................................................................................... 243

11.5

AT+STKFMT Set STK pdu format ................................................................................................. 244

11.6

AT+STENV Original STK PDU Envelope Command .................................................................... 245

11.7

AT+STSM Get STK Setup Menu List with PDU Mode ................................................................. 246

12

AT Commands for Hardware ................................................................................................... 247

12.1

AT+IPREX Set local baud rate permanently ................................................................................... 247

12.2

AT+CFGRI Indicate RI when using URC ....................................................................................... 248

12.3

AT+CSCLK Control UART Sleep ..................................................................................................... 249

12.4

AT+CMUX Enable the multiplexer over the UART ....................................................................... 250

12.5

AT+CGFUNC Enable/disable the function for the special GPIO ...................................................... 251

12.6

AT+CGDRT Set the direction of specified GPIO............................................................................ 253

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12.7

AT+CGSETV Set the value of specified GPIO ............................................................................... 254

12.8

AT+CGGETV Get the value of specified GPIO.............................................................................. 254

12.9

AT+CGISR Set GPIO interrupt trigger condition ........................................................................... 255

13

AT Commands for File System ................................................................................................ 257

13.1

AT+FSCD Select directory as current directory .............................................................................. 257

13.2

AT+FSMKDIR

13.3

AT+FSRMDIR Delete directory in current directory ...................................................................... 259

13.4

AT+FSLS List directories/files in current directory ........................................................................ 260

13.5

AT+FSDEL Delete file in current directory .................................................................................... 261

13.6

AT+FSRENAME

13.7

AT+FSATTRI

13.8

AT+FSMEM Check the size of available memory .......................................................................... 264

13.9

AT+FSLOCA Select storage place .................................................................................................. 264

Make new directory in current directory ............................................................... 258

Rename file in current directory ........................................................................ 262

Request file attributes .............................................................................................. 263

13.10 AT+FSCOPY Copy an appointed file ............................................................................................. 265

14

AT Commands for File Transmission ...................................................................................... 268

14.1

AT+CFTRANRX

Transfer a file to EFS ......................................................................................... 268

14.2

AT+CFTRANTX

Transfer a file from EFS to host ......................................................................... 269

15

AT Commands for Internet Service ......................................................................................... 271

15.1

PDP .................................................................................................................................................... 271

15.1.1

AT+CSOCKSETPN Set active PDP context’s profile number ................................................................ 271

15.1.2

AT+CIPDNSSET Set DNS query parameters.......................................................................................... 272

15.1.3

AT+CDNSGIP Query the IP address of given domain name ................................................................... 273

15.1.4

AT+CDNSGHNAME

15.1.5

AT+CPING Ping destination address....................................................................................................... 275

15.1.6

AT+CPINGSTOP Stop an ongoing ping session ..................................................................................... 277

15.1.7

AT+CTCPFIN

15.1.8

AT+CTCPKA Conigure TCP heartbeat ................................................................................................... 279

15.1.9

AT+CTEUTP Set unknown incoming TCP packet echo .......................................................................... 280

15.1.10

AT+CUPURE

15.1.11

AT+CINICMPALLOW Preferred ICMP filter ......................................................................................... 282

15.1.12

AT+CDNSSRV Get dns server ip address ............................................................................................... 283

15.2

Query the domain name of given IP address ........................................................ 274

Configure TCP FIN ......................................................................................................... 278

Set UDP port unreachable ICMP echo ............................................................................. 281

HTP .................................................................................................................................................... 284

15.2.1

AT+CHTPSERV Set HTP server info ...................................................................................................... 284

15.2.2

AT+CHTPUPDATE

15.2.3

Unsolicited HTP Codes .............................................................................................................................. 287

15.3

Updating date time using HTP protocol ................................................................. 286

NTP .................................................................................................................................................... 287

15.3.1

AT+CNTP Update system time ............................................................................................................... 287

15.3.2

Unsolicited NTP Codes .............................................................................................................................. 288

16

AT Commands for Open/Close Network ................................................................................. 289

16.1

AT+CNETSTART Open network .................................................................................................... 289

16.2

AT+CNETSTOP Close network ...................................................................................................... 290

16.3

AT+CNETIPADDR Inquire PDP address ....................................................................................... 291

16.4

Unsolicited Open/Close network command  Codes .................................................................. 291

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AT Commands for GPS ........................................................................................................... 293

17.1

AT+CGPS Start/Stop GPS session .................................................................................................. 293

17.2

AT+CGPSINFO Get GPS fixed position information ..................................................................... 294

17.3

AT+CGPSCOLD

17.4

AT+CGPSHOT Hot start GPS......................................................................................................... 296

17.5

AT+CGPSURL Set AGPS default server URL ............................................................................... 297

17.6

AT+CGPSSSL Set AGPS transport security ................................................................................... 298

17.7

AT+CGPSAUTO Start GPS automatic ........................................................................................... 298

17.8

AT+CGPSNMEA Configure NMEA sentence type ........................................................................ 299

17.9

AT+CGPSNEMARATE

Cold start GPS .................................................................................................... 296

Set NMEA output rate ........................................................................... 300

17.10 AT+CGPSMD

Configure AGPS MO method ................................................................................. 301

17.11 AT+CGPSFTM

Start GPS test mode .............................................................................................. 302

17.12 AT+CGPSDEL Delete the GPS information ................................................................................... 303
17.13 AT+CGPSXE Enable/Disable GPS XTRA function ....................................................................... 304
17.14 AT+CGPSXD Download XTRA assistant file ................................................................................ 305
17.15 AT+CGPSXDAUTO Download XTRA assistant file automatically............................................... 306
17.16 AT+CGPSINFOCFG Report GPS NMEA-0183 sentence .............................................................. 306
17.17 AT+CGPSPMD

Configure positioning mode ................................................................................. 308

17.18 AT+CGPSMSB

Configure based mode switch to standalone ......................................................... 309

17.19 AT+CGPSHOR

Configure positioning desired accuracy ................................................................ 310

17.20 AT+CGPSNOTIFY LCS respond positioning request .....................................................................311
17.21 AT+CGNSSINFO Get GNSS fixed position information ............................................................... 312
17.22 AT+CGNSSMODE Configure GNSS support mode ...................................................................... 314
17.23 Unsolicited XTRA download Codes .................................................................................................. 315
17.24 AT+CLBS

Base station location...................................................................................................... 315

17.25 AT+CLBSCFG

Base station location configure .............................................................................. 318

17.26 AT+CASSISTLOC Base station location of LTE/CDMA1x mode ................................................. 319

18

Audio Application Commands ................................................................................................. 321

18.1

AT+CREC

18.2

AT+CCMXPLAYWAV

Play wav audio file .................................................................................. 322

18.3

AT+CCMXSTOPWAV

Stop playing wav audio file ..................................................................... 323

18.4

AT+CCMXPLAY Play audio file .................................................................................................... 323

18.5

AT+CCMXSTOP Stop playing audio file ....................................................................................... 324

19

record wav audio file .................................................................................................. 321

Appendixes .............................................................................................................................. 325

19.1

Verbose code and numeric code ......................................................................................................... 325

19.2

Response string of AT+CEER ............................................................................................................ 325

19.3

Summary of CME ERROR codes ...................................................................................................... 329

19.4

Summary of CMS ERROR codes ...................................................................................................... 332

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1
1.1

Introduction
Scope

The present document describes the AT Command Set for the SIMCom Module:
SIM7500 series, SIM7600 series.
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] WAP-224-WTP-20010710-a
[5] WAP-230-WSP-20010705-a
[6] WAP-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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
































1.4

DTMF
EDGE
EGPRS
GPIO
GPRS
GSM
HSDPA
HSUPA
I2C
IMEI
IMSI
ME
MO
MS
MT
PCS
PDU
PIN
PUK
SIM
SMS
SMS–SC
TA
TE
UE
UMTS
USIM
WCDMA
FTP
HTTP
RTC
URC

Dual Tone Multi–Frequency
Enhanced Data GSM Environment
Enhanced General Packet Radio Service
General–Purpose Input/Output
General Packet Radio Service
Global System for Mobile communications
High Speed Downlink Packet Access
High Speed Uplink Packet Access
Inter–Integrated Circuit
International Mobile station Equipment Identity
International Mobile Subscriber Identity
Mobile Equipment
Mobile–Originated
Mobile Station
Mobile–Terminated; Mobile Termination
Personal Communication System
Protocol Data Unit
Personal Identification Number
Personal Unlock Key
Subscriber Identity Module
Short Message Service
Short Message Service – Service Center
Terminal Adaptor; e.g. a data card (equal to DCE)
Terminal Equipment; e.g. a computer (equal to DTE)
User Equipment
Universal Mobile Telecommunications System
Universal Subscriber Identity Module
Wideband Code Division Multiple Access
File Transfer Protocol
Hyper Text Transfer Protocol
Real Time Clock
Unsolicited Result Code

Definitions and conventions
1. For the purposes of the present document, the following syntactical definitions apply:


Carriage return character.



Linefeed character.

<…>

Name enclosed in angle brackets is a syntactical element. Brackets themselves do not
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.

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If subparameter is not given, its value equals to its previous value or the recommended
default value.
Underlined defined subparameter value is the recommended default setting or factory
setting.

underline

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  and  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 –
NO

References –

AT command can be used only when SIM PIN is READY.

–

AT command can be used when SIM card is absent or SIM PIN validation is
pending.
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
2.1

AT Interface Synopsis
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  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” or “AT&”, “” is the command name, and “”
is/are the parameter(s) for the basic command, and optional. An example of Basic Command is “ATE”,
which informs the TA/DCE whether received characters should be echoed back to the TE/DTE according to
the value of “”; “” is optional and a default value will be used if omitted.

2. S Parameter Command
The format of S Parameter Command is “ATS=”, “” is the index of the S–register to set, and
“” is the value to assign to it. “” is optional; in this case, the format is “ATS”, 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+=?

Test the existence of the command; give some
information about the command subparameters.

Read Command

AT+?

Check the current values of subparameters.

Write Command

AT+=<…>

Set user-definable subparameter values.

Execution Command

AT+

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 , i.e. the format of information responses is
“”. Inside information responses, there may be one or more .
Throughout this document, only the responses are presented, and  are intentionally omitted.

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3
3.1

AT Commands According V.25TER
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
NO

References
V.25ter

Syntax
Execution Command
A/

Responses
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
NO

References
V25.ter

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Syntax
Execution Commands
ATD[][;]

Responses
Originate a voice call successfully:
OK
VOICE CALL: BEGIN
Originate a data call successfully:
CONNECT []
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: 

Defined values

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 @

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.

CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command.

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>

Originate call from specified memory

Description
This command is used to originate a call using specified memory and index number.
SIM PIN
NO

References
V.25ter

Syntax
Execution Commands
ATD>[;]

Responses
Originate a voice call successfully:
OK
VOICE CALL: BEGIN
Originate a data call successfully:
CONNECT []
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: 

Defined values

Phonebook storage: (For detailed description of storages see AT+CPBS)
"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

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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CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command.

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>

Originate call from active memory (1)

Description
This command is used to originate a call to specified number.
SIM PIN
NO

References
V.25ter

Syntax
Execution Commands
ATD>[;]

Responses
Originate a voice call successfully:
OK
VOICE CALL: BEGIN
Originate a data call successfully:
CONNECT []
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: 

Defined values

Integer type memory location in the range of locations available in the selected memory, i.e. the
index number returned by AT+CPBR.
<;>
The termination character ";" is mandatory to set up voice calls. It must not be used for data and fax

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calls.

CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command.

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>

Originate call from active memory (2)

Description
This command is used to originate a call to specified number.
SIM PIN
NO

References
V.25ter

Syntax
Execution Commands
ATD>[;]

Responses
Originate a voice call successfully:
OK
VOICE CALL: BEGIN
Originate a data call successfully:
CONNECT []
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: 

Defined values

String type value, which should equal to an alphanumeric field in at least one phone book entry in
the searched memories.  formatted as current TE character set specified by AT+CSCS.
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.

CONNECT result code string; the string formats please refer ATX/AT\V/AT&E command.

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
YES

References
V.25ter

Syntax
Execution Commands
ATA

Responses
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+CVHU.
SIM PIN
NO

References
V.25ter

Syntax
Execution Command
ATH

Responses
If AT+CVHU=0:
VOICE CALL: END: