Name: SIM800 Series AT Command Manual V1.07

• Version History
• 1 Introduction
  • 1.1 Scope of the document
  • 1.2 Related documents
  • 1.3 Conventions and abbreviations
  • 1.4 AT Command syntax
    • 1.4.1 Basic syntax
    • 1.4.2 S Parameter syntax
    • 1.4.3 Extended Syntax
    • 1.4.4 Combining AT commands on the same Command line
    • 1.4.5 Entering successive AT commands on separate lines
  • 1.5 Supported character sets
  • 1.6 Flow control
    • 1.6.1 Software flow control (XON/XOFF flow control)
    • 1.6.2 Hardware flow control (RTS/CTS flow control)
  • 1.7 Definitions
    • 1.7.1 Parameter Saving Mode
    • 1.7.2 Max Response Time
• 2 AT Commands According to V.25TER
  • 2.1 Overview of AT Commands According to V.25TER
  • 2.2 Detailed Description of AT Commands According to V.25TER
    • 2.2.1 A/ Re-issues the Last Command Given
    • 2.2.2 ATA Answer an Incoming Call
    • 2.2.3 ATD Mobile Originated Call to Dial A Number
    • 2.2.4 ATD><n> Originate Call to Phone Number in Current Memory
    • 2.2.5 ATD><str> Originate Call to Phone Number in Memory Which Corresponds to Field <str>
    • 2.2.6 ATDL Redial Last Telephone Number Used
    • 2.2.7 ATE Set Command Echo Mode
    • 2.2.8 ATH Disconnect Existing Connection
    • 2.2.9 ATI Display Product Identification Information
    • 2.2.10 ATL Set Monitor speaker loudness
    • 2.2.11 ATM Set Monitor Speaker Mode
    • 2.2.12 +++ Switch from Data Mode or PPP Online Mode to Command Mode
    • 2.2.13 ATO Switch from Command Mode to Data Mode
    • 2.2.14 ATP Select Pulse Dialling
    • 2.2.15 ATQ Set Result Code Presentation Mode
    • 2.2.16 ATS0 Set Number of Rings before Automatically Answering the Call
    • 2.2.17 ATS3 Set Command Line Termination Character
    • 2.2.18 ATS4 Set Response Formatting Character
    • 2.2.19 ATS5 Set Command Line Editing Character
    • 2.2.20 ATS6 Pause Before Blind Dialling
    • 2.2.21 ATS7 Set Number of Seconds to Wait for Connection Completion
    • 2.2.22 ATS8 Set Number of Seconds to Wait for Comma Dial Modifier Encountered in Dial String of D Command
    • 2.2.23 ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier
    • 2.2.24 ATT Select Tone Dialing
    • 2.2.25 ATV TA Response Format
    • 2.2.26 ATX Set CONNECT Result Code Format and Monitor Call Progress
    • 2.2.27 ATZ Reset Default Configuration
    • 2.2.28 AT&C Set DCD Function Mode
    • 2.2.29 AT&D Set DTR Function Mode
    • 2.2.30 AT&F Factory Defined Configuration
    • 2.2.31 AT&V Display Current Configuration
    • 2.2.32 AT&W Store Active Profile
    • 2.2.33 AT+GCAP Request Complete TA Capabilities List
    • 2.2.34 AT+GMI Request Manufacturer Identification
    • 2.2.35 AT+GMM Request TA Model Identification
    • 2.2.36 AT+GMR Request TA Revision Identification of Software Release
    • 2.2.37 AT+GOI Request Global Object Identification
    • 2.2.38 AT+GSN Request TA Serial Number Identification (IMEI)
    • 2.2.39 AT+ICF Set TE-TA Control Character Framing
    • 2.2.40 AT+IFC Set TE-TA Local Data Flow Control
    • 2.2.41 AT+IPR Set TE-TA Fixed Local Rate
      • 2.2.41.1 Auto-bauding
    • 2.2.42 AT+HVOIC Disconnect Voice Call Only
• 3 AT Commands According to 3GPP TS 27.007
  • 3.1 Overview of AT Command According to 3GPP TS 27.007
  • 3.2 Detailed Descriptions of AT Command According to 3GPP TS 27.007
    • 3.2.1 AT+CACM Accumulated Call Meter (ACM) Reset or Query
    • 3.2.2 AT+CAMM Accumulated Call Meter Maximum (ACM max) Set or Query
    • 3.2.3 AT+CAOC Advice of Charge
    • 3.2.4 AT+CBST Select Bearer Service Type
    • 3.2.5 AT+CCFC Call Forwarding Number and Conditions Control
    • 3.2.6 AT+CCWA Call Waiting Control
    • 3.2.7AT+CEER Extended Error Report
    • 3.2.8 AT+CGMI Request Manufacturer Identification
    • 3.2.9 AT+CGMM Request Model Identification
    • 3.2.10 AT+CGMR Request TA Revision Identification of Software Release
    • 3.2.11 AT+CGSN Request Product Serial Number Identification (Identical with +GSN)
    • 3.2.12 AT+CSCS Select TE Character Set
    • 3.2.13 AT+CSTA Select Type of Address
    • 3.2.14 AT+CHLD Call Hold and Multiparty
    • 3.2.15 AT+CIMI Request International Mobile Subscriber Identity
    • 3.2.16 AT+CLCC List Current Calls of ME
    • 3.2.17 AT+CLCK Facility Lock
    • 3.2.18 AT+CLIP Calling Line Identification Presentation
    • 3.2.19 AT+CLIR Calling Line Identification Restriction
    • 3.2.20 AT+CMEE Report Mobile Equipment Error
    • 3.2.21 AT+COLP Connected Line Identification Presentation
    • 3.2.22 AT+COPS Operator Selection
    • 3.2.23 AT+CPAS Phone Activity Status
    • 3.2.24 AT+CPBF Find Phonebook Entries
    • 3.2.25 AT+CPBR Read Current Phonebook Entries
    • 3.2.26 AT+CPBS Select Phonebook Memory Storage
    • 3.2.27 AT+CPBW Write Phonebook Entry
    • 3.2.28 AT+CPIN Enter PIN
    • 3.2.29 AT+CPWD Change Password
    • 3.2.30 AT+CR Service Reporting Control
    • 3.2.31 AT+CRC Set Cellular Result Codes for Incoming Call Indication
    • 3.2.32 AT+CREG Network Registration
    • 3.2.33 AT+CRLP Select Radio Link Protocol Parameters
    • 3.2.34 AT+CRSM Restricted SIM Access
    • 3.2.35 AT+CSQ Signal Quality Report
    • 3.2.36 AT+VTD Tone Duration
    • 3.2.37 AT+VTS DTMF and Tone Generation
    • 3.2.38 AT+CMUX Multiplexer Control
    • 3.2.39 AT+CNUM Subscriber Number
    • 3.2.40 AT+CPOL Preferred Operator List
    • 3.2.41 AT+COPN Read Operator Names
    • 3.2.42 AT+CFUN Set Phone Functionality
    • 3.2.43 AT+CCLK Clock
    • 3.2.44 AT+CSIM Generic SIM Access
    • 3.2.45 AT+CALM Alert Sound Mode
    • 3.2.46 AT+CALS Alert Sound Select
    • 3.2.47 AT+CRSL Ringer Sound Level
    • 3.2.48 AT+CLVL Loud Speaker Volume Level
    • 3.2.49 AT+CMUT Mute Control
    • 3.2.50 AT+CPUC Price Per Unit and Currency Table
    • 3.2.51 AT+CCWE Call Meter Maximum Event
    • 3.2.52 AT+CBC Battery Charge
    • 3.2.53 AT+CUSD Unstructured Supplementary Service Data
    • 3.2.54 AT+CSSN Supplementary Services Notification
• 4 AT Commands According to 3GPP TS 27.005
  • 4.1 Overview of AT Commands According to 3GPP TS 27.005
  • 4.2 Detailed Descriptions of AT Commands According to 3GPP TS 27.005
    • 4.2.1 AT+CMGD Delete SMS Message
    • 4.2.2 AT+CMGF Select SMS Message Format
    • 4.2.3 AT+CMGL List SMS Messages from Preferred Store
    • 4.2.4 AT+CMGR Read SMS Message
    • 4.2.5 AT+CMGS Send SMS Message
    • 4.2.6 AT+CMGW Write SMS Message to Memory
    • 4.2.7 AT+CMSS Send SMS Message from Storage
    • 4.2.8 AT+CNMI New SMS Message Indications
    • 4.2.9 AT+CPMS Preferred SMS Message Storage
    • 4.2.10 AT+CRES Restore SMS Settings
    • 4.2.11 AT+CSAS Save SMS Settings
    • 4.2.12 AT+CSCA SMS Service Center Address
    • 4.2.13 AT+CSCB Select Cell Broadcast SMS Messages
    • 4.2.14 AT+CSDH Show SMS Text Mode Parameters
    • 4.2.15 AT+CSMP Set SMS Text Mode Parameters
    • 4.2.16 AT+CSMS Select Message Service
• 5 AT Commands for SIM Application Toolkit
  • 5.1 Overview
  • 5.2 Detailed Descriptions of Commands
    • 5.2.1 AT+STKTRS STK Terminal Response
    • 5.2.2 AT+STKENVS STK Envelope Command
    • 5.2.3 AT+STKCALL STK call setup
    • 5.2.4 AT+STKSMS STK SMS delivery
    • 5.2.5 AT+STKSS STK SS setup
    • 5.2.6 AT+STKUSSD STK USSD setup
    • 5.2.7 AT+STKDTMF STK sending DTMF
    • 5.2.8 +STKPCI STK Proactive Command Indication
    • 5.2.9 AT+STKMENU STK Main menu command
    • 5.2.10 AT+STKPCIS STK URC switch command
• 6 AT Commands Special for SIMCom
  • 6.1 Overview
  • 6.2 Detailed Descriptions of Commands
    • 6.2.1 AT+SIDET Change the Side Tone Gain Level
    • 6.2.2 AT+CPOWD Power off
    • 6.2.3 AT+SPIC Times Remained to Input SIM PIN/PUK
    • 6.2.4 AT+CMIC Change the Microphone Gain Level
    • 6.2.5 AT+CALA Set Alarm Time
    • 6.2.6 AT+CALD Delete Alarm
    • 6.2.7 AT+CADC Read ADC
    • 6.2.8 AT+CSNS Single Numbering Scheme
    • 6.2.9 AT+CDSCB Reset Cell Broadcast
    • 6.2.10 AT+CMOD Configure Alternating Mode Calls
    • 6.2.11 AT+CFGRI Indicate RI When Using URC
    • 6.2.12 AT+CLTS Get Local Timestamp
    • 6.2.13 AT+CLDTMF Local DTMF Tone Generation
    • 6.2.14 AT+CDRIND CS Voice/Data Call Termination Indication
    • 6.2.15 AT+CSPN Get Service Provider Name from SIM
    • 6.2.16 AT+CCVM Get and Set the Voice Mail Number on the SIM
    • 6.2.17 AT+CBAND Get and Set Mobile Operation Band
    • 6.2.18 AT+CHF Configure Hands Free Operation
    • 6.2.19 AT+CHFA Swap the Audio Channels
    • 6.2.20 AT+CSCLK Configure Slow Clock
    • 6.2.21 AT+CENG Switch on or off Engineering Mode
    • 6.2.22 AT+SCLASS0 Store Class 0 SMS to SIM When Received Class 0 SMS
    • 6.2.23 AT+CCID Show ICCID
    • 6.2.24 AT+CMTE Set Critical Temperature Operating Mode or Query Temperature
    • 6.2.25 AT+CMGDA Delete All SMS
    • 6.2.26 AT+STTONE Play SIM Toolkit Tone
    • 6.2.27 AT+SIMTONE Generate Specifically Tone
    • 6.2.28 AT+CCPD Enable or Disable Alpha String
    • 6.2.29 AT+CGID Get SIM Card Group Identifier
    • 6.2.30 AT+MORING Show State of Mobile Originated Call
    • 6.2.31 AT+CMGHEX Enable or Disable Sending Non-ASCII Character SMS
    • 6.2.32 AT+CCODE Configure SMS Code Mode
    • 6.2.33 AT+CIURC Enable or Disable Initial URC Presentation
    • 6.2.34 AT+CPSPWD Change PS Super Password
    • 6.2.35 AT+EXUNSOL Enable or Disable Proprietary Unsolicited Indications
    • 6.2.36 AT+CGMSCLASS Change GPRS Multislot Class
    • 6.2.37 AT+CDEVICE View Current Flash Device Type
    • 6.2.38 AT+CCALR Call Ready Query
    • 6.2.39 AT+GSV Display Product Identification Information
    • 6.2.40 AT+SGPIO Control the GPIO
    • 6.2.41 AT+SPWM Generate the Pulse-Width-Modulation
    • 6.2.42 AT+ECHO Echo Cancellation Control
    • 6.2.43 AT+CAAS Control Auto Audio Switch
    • 6.2.44 AT+SVR Configure Voice Coding Type for Voice Calls
    • 6.2.45 AT+GSMBUSY Reject Incoming Call
    • 6.2.46 AT+CEMNL Set the List of Emergency Number
    • 6.2.47 AT*CELLLOCK Set the List of ARFCN Which Needs to Be Locked
    • 6.2.48 AT+SLEDS Set the Timer Period of Net Light
    • 6.2.49 AT+CBUZZERRING Use the Buzzer Sound as the Incoming Call Ring
    • 6.2.50 AT+CEXTERNTONE Close or Open the Microphone
    • 6.2.51 AT+CNETLIGHT Close the Net Light or Open It to Shining
    • 6.2.52 AT+CWHITELIST Set the White List
    • 6.2.53 AT+CSDT Switch on or off Detecting SIM Card
    • 6.2.54 AT+CSMINS SIM Inserted Status Reporting
    • 6.2.55 AT+CSGS Netlight Indication of GPRS Status
    • 6.2.56 AT+CMICBIAS Close or Open the MICBIAS
    • 6.2.57 AT+DTAM Set TTS and RECORD Play Mode in Call
    • 6.2.58 AT+SJDR Set Jamming Detection Function
    • 6.2.59 AT+CPCMCFG Set PCM Parameter
    • 6.2.60 AT+CPCMSYNC Set PCM Sync Parameter
    • 6.2.61 AT+CANT Antenna Detecting
    • 6.2.62 AT+CAGCSET Close or Open AGC Function
    • 6.2.63 AT+SD2PCM SD and PCM Switch Function
    • 6.2.64 AT+SKPD Keypad Detecting Function
    • 6.2.65 AT+SIMTONEX Custom Tones
    • 6.2.66 AT+CROAMING Roaming State
    • 6.2.67 AT+CNETSCAN Perform a Net Survey to Show All the Cells’ Information
    • 6.2.68 AT+CMNRP Dual Serial Port Feature
    • 6.2.69 AT+CEGPRS Switch on or off EDGE
    • 6.2.70 AT+CGPIO Control the GPIO by PIN Index
    • 6.2.71 AT+CMEDPLAY Play Audio File
    • 6.2.72 AT+CMEDIAVOL Control the Volume when Playing Audio File
    • 6.2.73 AT+SNDLEVEL Set the Sound Level of Special AT Command
• 7 AT Commands for GPRS Support
  • 7.1 Overview of AT Commands for GPRS Support
  • 7.2 Detailed Descriptions of AT Commands for GPRS Support
    • 7.2.1 AT+CGATT Attach or Detach from GPRS Service
    • 7.2.2 AT+CGDCONT Define PDP Context
    • 7.2.3 AT+CGQMIN Quality of Service Profile (Minimum Acceptable)
    • 7.2.4 AT+CGQREQ Quality of Service Profile (Requested)
    • 7.2.5 AT+CGACT PDP Context Activate or Deactivate
    • 7.2.6 AT+CGDATA Enter Data State
    • 7.2.7 AT+CGPADDR Show PDP Address
    • 7.2.8 AT+CGCLASS GPRS Mobile Station Class
    • 7.2.9 AT+CGEREP Control Unsolicited GPRS Event Reporting
    • 7.2.10 AT+CGREG Network Registration Status
    • 7.2.11 AT+CGSMS Select Service for MO SMS Messages
• 8 AT Commands for TCPIP Application Toolkit
  • 8.1 Overview
  • 8.2 Detailed Descriptions of Commands
    • 8.2.1 AT+CIPMUX Start Up Multi-IP Connection
    • 8.2.2 AT+CIPSTART Start Up TCP or UDP Connection
    • 8.2.3 AT+CIPSEND Send Data Through TCP or UDP Connection
    • 8.2.4 AT+CIPQSEND Select Data Transmitting Mode
    • 8.2.5 AT+CIPACK Query Previous Connection Data Transmitting State
    • 8.2.6 AT+CIPCLOSE Close TCP or UDP Connection
    • 8.2.7 AT+CIPSHUT Deactivate GPRS PDP Context
    • 8.2.8 AT+CLPORT Set Local Port
    • 8.2.9 AT+CSTT Start Task and Set APN, USER NAME, PASSWORD
    • 8.2.10 AT+CIICR Bring Up Wireless Connection with GPRS or CSD
    • 8.2.11 AT+CIFSR Get Local IP Address
    • 8.2.12 AT+CIPSTATUS Query Current Connection Status
    • 8.2.13 AT+CDNSCFG Configure Domain Name Server
    • 8.2.14 AT+CDNSGIP Query the IP Address of Given Domain Name
    • 8.2.15 AT+CIPHEAD Add an IP Head at the Beginning of a Package Received
    • 8.2.16 AT+CIPATS Set Auto Sending Timer
    • 8.2.17 AT+CIPSPRT Set Prompt of ‘>’ When Module Sends Data
    • 8.2.18 AT+CIPSERVER Configure Module as Server
    • 8.2.19 AT+CIPCSGP Set CSD or GPRS for Connection Mode
    • 8.2.20 AT+CIPSRIP Show Remote IP Address and Port When Received Data
    • 8.2.21 AT+CIPDPDP Set Whether to Check State of GPRS Network Timing
    • 8.2.22 AT+CIPMODE Select TCPIP Application Mode
    • 8.2.23 AT+CIPCCFG Configure Transparent Transfer Mode
    • 8.2.24 AT+CIPSHOWTP Display Transfer Protocol in IP Head When Received Data
    • 8.2.25 AT+CIPUDPMODE UDP Extended Mode
    • 8.2.26 AT+CIPRXGET Get Data from Network Manually
    • 8.2.27 AT+CIPSCONT Save TCPIP Application Context
    • 8.2.28 AT+CIPRDTIMER Set Remote Delay Timer
    • 8.2.29 AT+CIPSGTXT Select GPRS PDP context
    • 8.2.30 AT+CIPTKA Set TCP Keepalive Parameters
• 9 AT Commands for IP Application
  • 9.1 Overview
  • 9.2 Detailed Descriptions of Commands
    • 9.2.1 AT+SAPBR Bearer Settings for Applications Based on IP
• 10 AT Commands for PING Support
  • 10.1 Overview
  • 10.2 Detailed Descriptions of Commands
    • 10.2.1 AT+CIPPING PING Request
    • 10.2.2 AT+CIPCTL Set the Mode When Receiving an IP Packet
    • 10.2.3 AT+CIPFLT Set the Rules of IP Filter
    • 10.2.4 AT+CIPBEIPING Set the Module to be PING or Not
• 11 AT Commands for HTTP Application
  • 11.1 Overview
  • 11.2 Detailed Descriptions of Commands
    • 11.2.1 AT+HTTPINIT Initialize HTTP Service
    • 11.2.2 AT+HTTPTERM Terminate HTTP Service
    • 11.2.3 AT+HTTPPARA Set HTTP Parameters Value
    • 11.2.4 AT+HTTPDATA Input HTTP Data
    • 11.2.5 AT+HTTPACTION HTTP Method Action
    • 11.2.6 AT+HTTPREAD Read the HTTP Server Response
    • 11.2.7 AT+HTTPSCONT Save HTTP Application Context
    • 11.2.8 AT+HTTPSTATUS Read HTTP Status
• 12 AT Commands for FTP Application
  • 12.1 Overview
  • 12.2 Detailed Descriptions of Commands
    • 12.2.1 AT+FTPPORT Set FTP Control Port
    • 12.2.2 AT+FTPMODE Set Active or Passive FTP Mode
    • 12.2.3 AT+FTPTYPE Set the Type of Data to Be Transferred
    • 12.2.4 AT+FTPPUTOPT Set FTP Put Type
    • 12.2.5 AT+FTPCID Set FTP Bearer Profile Identifier
    • 12.2.6 AT+FTPREST Set Resume Broken Download
    • 12.2.7 AT+FTPSERV Set FTP Server Address
    • 12.2.8 AT+FTPUN Set FTP User Name
    • 12.2.9 AT+FTPPW Set FTP Password
    • 12.2.10 AT+FTPGETNAME Set Download File Name
    • 12.2.11 AT+FTPGETPATH Set Download File Path
    • 12.2.12 AT+FTPPUTNAME Set Upload File Name
    • 12.2.13 AT+FTPPUTPATH Set Upload File Path
    • 12.2.14 AT+FTPGET Download File
    • 12.2.15 AT+FTPPUT Set Upload File
    • 12.2.16 AT+FTPSCONT Save FTP Application Context
    • 12.2.17 AT+FTPDELE Delete Specified File in FTP Server
    • 12.2.18 AT+FTPSIZE Get the Size of Specified File in FTP Server
    • 12.2.19 AT+FTPSTATE Get the FTP State
    • 12.2.20 AT+FTPEXTPUT Extend Upload File
    • 12.2.21 AT+FTPMKD Make Directory on the Remote Machine
    • 12.2.22 AT+FTPRMD Remove Directory on the Remote Machine
    • 12.2.23 AT+FTPLIST List Contents of Directory on the Remote Machine
    • 12.2.24 AT+FTPGETTOFS Download File and Save in File System
    • 12.2.25 AT+FTPPUTFRMFS Upload File from File System.
    • 12.2.26 AT+FTPEXTGET Extend Download File
    • 12.2.27 AT+FTPFILEPUT Load File in RAM from File System then Upolad with FTPPUT
    • 12.2.28 AT+FTPQUIT Quit Current FTP Session
• 13 AT Commands for GSM Location Application
  • 13.1 Overview
  • 13.2 Detailed Descriptions of Commands
    • 13.2.1 AT+CIPGSMLOC GSM Location and Time
• 14 AT Commands for Email Application
  • 14.1 Overview
    • 14.2.1 AT+EMAILCID Set Email Bearer Profile Identifier
    • 14.2.2 AT+EMAILTO Set Timeout Value of SMTP/POP3 Server Response
    • 14.2.3 AT+SMTPSRV Set SMTP Server Address and Port
    • 14.2.4 AT+SMTPAUTH Set User Name and Password for SMTP Authentication
    • 14.2.5 AT+SMTPFROM Set Sender Address and Name
    • 14.2.6 AT+SMTPRCPT Set the Email Recipient(TO/CC/BCC) Address and Name
    • 14.2.7 AT+SMTPSUB Set the Email Subject
    • 14.2.8 AT+SMTPBODY Set the Email Body
    • 14.2.9 AT+SMTPFILE Set the Email Attachment
    • 14.2.10 AT+SMTPSEND Send the Email
    • 14.2.11 AT+SMTPFT Transfer the Email Attachment
    • 14.2.12 AT+SMTPCS Set the Email Charset
    • 14.2.13 AT+POP3SRV Set POP3 Server and Account
    • 14.2.14 AT+POP3IN Log in POP3 Server
    • 14.2.15 AT+POP3NUM Get Email Number and Total Size
    • 14.2.16 AT+POP3LIST Get the Specific Email Size
    • 14.2.17 AT+POP3UIDL Get the Specific Email Unique-id
    • 14.2.18 AT+POP3CMD Get Multi-line Response
    • 14.2.19 AT+POP3READ Read Multi-line Response
    • 14.2.20 AT+POP3DEL Mark the Specific Email to Delete
    • 14.2.21 AT+POP3RSET Unmark the Emails that Be Marked as Deleted
    • 14.2.22 AT+POP3OUT Log Out POP3 Server
• 15 AT Commands for MMS Application
  • 15.1 Overview
  • 15.2 Detailed Descriptions of Commands
    • 15.2.1 AT+CMMSCURL Set the URL of the MMS Center
    • 15.2.2 AT+CMMSPROTO Set the Protocol Parameter and MMS Proxy
    • 15.2.3 AT+CMMSCID Set the Network Parameters for MMS
    • 15.2.4 AT+CMMSSENDCFG Set the Parameters for Sending MMS
    • 15.2.5 AT+CMMSEDIT Enter or Exit Edit Mode
    • 15.2.6 AT+CMMSDOWN Download the File Data or Title from UART
    • 15.2.7 AT+CMMSDELFILE Delete the File of the Edited MMS by File Index
    • 15.2.8 AT+CMMSSEND Start MMS Sending
    • 15.2.9 AT+CMMSRECP Add Recipients
    • 15.2.10 AT+CMMSCC Add Copy Recipients
    • 15.2.11 AT+CMMSBCC Add Secret Recipients
    • 15.2.12 AT+CMMSDELRECP Delete Recipients
    • 15.2.13 AT+CMMSDELCC Delete Copy Recipients
    • 15.2.14 AT+CMMSDELBCC Delete Secret Recipients
    • 15.2.15 AT+CMMSRECV Receive MMS
    • 15.2.16 AT+CMMSVIEW Get the MMS into Buffer and Show the Information
    • 15.2.17 AT+CMMSREAD Read the Given File of the MMS in the Buffer
    • 15.2.18 AT+CMMSRDPUSH Read the Information of the MMS PUSH Message
    • 15.2.19 AT+CMMSUA Set User Agent
    • 15.2.20 AT+CMMSPROFILE Set User Agent Profile
    • 15.2.21 AT+CMMSTIMEOUT Set MMS Timeout
    • 15.2.22 AT+CMMSSTATUS Get MMS Status
    • 15.2.23 AT+CMMSINIT Initialize MMS Function
    • 15.2.24 AT+CMMSTERM Exit MMS Function
    • 15.2.25 AT+CMMSSCONT Save MMS Context
• 16 AT Commands for DDET Application
  • 16.1 Overview
  • 16.2 Detailed Descriptions of Commands
    • 16.2.1 AT+DDET DTMF Detection Control
• 17 AT Commands for RECORD Application
  • 17.1 Overview
  • 17.2 Detailed Descriptions of Commands
    • 17.2.1 AT+CREC Record Operation
    • 17.2.2 AT+CRECORD Record and Send Data to UART
• 18 AT Commands for TTS Application
  • 18.1 Overview
  • 18.2 Detailed Descriptions of Commands
    • 18.2.1 AT+CTTS TTS Operation
    • 18.2.2 AT+CTTSPARAM Set Parameters of the TTS Playing
    • 18.2.3 AT+CTTSRING Enable/Disable TTS Play During Incoming Call Ring
• 19 Supported Unsolicited Result Codes
  • 19.1 Summary of CME ERROR Codes
  • 19.2 Summary of CMS ERROR Codes
  • 19.3 Summary of Unsolicited Result Codes
• 20 AT Commands Examples
  • 20.1 Profile Commands
  • 20.2 SIM Commands
  • 20.3 General Commands
  • 20.4 Call Control Commands
  • 20.5 SIM Toolkit Commands
  • 20.6 Audio Commands
  • 20.7 SMS Commands
  • 20.8 GPRS Commands
  • 20.9 TCPIP Commands
  • 20.10 IP Commands
  • 20.11 PING Commands
  • 20.12 HTTP and FTP Commands
  • 20.13 GSM Location Commands
  • 20.14 EMAIL Commands
  • 20.15 MMS Commands
  • 20.16 DDET Commands
  • 20.17 RECORD Commands
  • 20.18 TTS Commands
• 21 ATC Differences among SIM800 Series
  • 21.1 AT+SIDET
  • 21.2 AT+CMIC
  • 21.3 AT+CBAND
  • 21.4 AT+CHFA
  • 21.5 AT+SGPIO
  • 21.6 AT+SJDR
  • 21.7 AT+CREC
  • 21.8 AT+CTTSPARAM
  • 21.9 AT+CADC
  • 21.10 AT+CSCLK
  • 21.11 Only Part of Projects Support Following AT Commands