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SIM800 Series_AT Command Manual_V1.11.pdf
Version History 14
1 Introduction 24
1.1 Scope of the document 24
1.2 Related documents 24
1.3 Conventions and abbreviations 24
1.4 AT Command syntax 24
1.5 Supported character sets 26
1.6 Flow control 26
1.7 Definitions 27
2 AT Commands According to V.25TER 28
2.1 Overview of AT Commands According to V.25TER 28
2.2 Detailed Description of AT Commands According to V.25TER 29
3 AT Commands According to 3GPP TS 27.007 58
3.1 Overview of AT Command According to 3GPP TS 27.007 58
3.2 Detailed Descriptions of AT Command According to 3GPP TS 27.007 59
4 AT Commands According to 3GPP TS 27.005 115
4.1 Overview of AT Commands According to 3GPP TS 27.005 115
4.2 Detailed Descriptions of AT Commands According to 3GPP TS 27.005 115
5 AT Commands for SIM Application Toolkit 138
5.1 Overview 138
5.2 Detailed Descriptions of Commands 138
6 AT Commands Special for SIMCom 146
6.1 Overview 146
6.2 Detailed Descriptions of Commands 148
7 AT Commands for GPRS Support 216
7.1 Overview of AT Commands for GPRS Support 216
7.2 Detailed Descriptions of AT Commands for GPRS Support 216
8 AT Commands for TCPIP Application Toolkit 228
8.1 Overview 228
8.2 Detailed Descriptions of Commands 229
9 AT Commands for IP Application 258
9.1 Overview 258
9.2 Detailed Descriptions of Commands 258
10 AT Commands for PING Support 260
10.1 Overview 260
10.2 Detailed Descriptions of Commands 260
11 AT Commands for HTTP Application 265
11.1 Overview 265
11.2 Detailed Descriptions of Commands 265
12 AT Commands for FTP Application 275
12.1 Overview 275
12.2 Detailed Descriptions of Commands 276
13 AT Commands for Email Application 298
13.1 Overview 298
13.2 Detailed Descriptions of Commands 299
14 AT Commands for MMS Application 319
14.1 Overview 319
14.2 Detailed Descriptions of Commands 320
15 AT Commands for DDET Application 341
15.1 Overview 341
15.2 Detailed Descriptions of Commands 341
16 AT Commands for RECORD Application 343
16.1 Overview 343
16.2 Detailed Descriptions of Commands 343
17 AT Commands for TTS Application 348
17.1 Overview 348
17.2 Detailed Descriptions of Commands 348
18 Supported Unsolicited Result Codes 351
18.1 Summary of CME ERROR Codes 351
18.2 Summary of CMS ERROR Codes 354
18.3 Summary of Unsolicited Result Codes 358
19 AT Commands Examples 363
19.1 Profile Commands 363
19.2 SIM Commands 364
19.3 General Commands 367
19.4 Call Control Commands 367
19.5 SIM Toolkit Commands 370
19.6 Audio Commands 370
19.7 SMS Commands 370
19.8 GPRS Commands 372
19.9 TCPIP Commands 374
19.10 IP Commands 374
19.11 PING Commands 374
19.12 HTTP and FTP Commands 376
19.13 EMAIL Commands 376
19.14 MMS Commands 376
19.15 DDET Commands 378
19.16 RECORD Commands 379
19.17 TTS Commands 380
20 ATC Differences among SIM800 Series 382
20.1 AT+SIDET 382
20.2 AT+CMIC 382
20.3 AT+CBAND 383
20.4 AT+CHFA 383
20.5 AT+SGPIO 384
20.6 AT+SJDR 384
20.7 AT+CREC 385
20.8 AT+CTTSPARAM 385
20.9 AT+CADC 385
20.10 AT+CSCLK 385
20.11 AT+CMMSDOWN 386
20.12 AT+CFGRI 386
20.13 AT+CLCK 387
20.14 AT+CBATCHK 387
20.15 Only Part of Projects Support Following AT Commands 387
Contact 390
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> Originate Call to Phone Number in Current Memory
2.2.5 ATD> Originate Call to Phone Number in Memory Which Corresponds to Field
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
6.2.25 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
6.2.74 AT+ECHARGE Charge Control
6.2.75 AT+SIMTIMER Modify the Poll Interval Time Requested by SIM Card
6.2.76 AT+SPE Speech Enhancement Control
6.2.77 AT+CCONCINDEX Report Concatenated SMS Index
6.2.78 AT+SDMODE SD Mode Switch Function
6.2.79 AT+SRSPT Control SMS Retransmission
6.2.80 AT+CELLIST Perform a Net Survey to Show All the Cells’ Information
6.2.81 AT+CLIST Query AT
6.2.82 AT+CBATCHK Set VBAT Checking Feature ON/OFF
6.2.83 AT+DLYRI Control the Delay Time before Indicate RI when Using URC
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
11.2.9 AT+HTTPHEAD Read the HTTP Header Information of Server Response
11.2.10 AT+HTTPGETHEAD Show the HTTP Header Information in HTTPREAD
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 Email Application
13.1 Overview
13.2 Detailed Descriptions of Commands
13.2.1 AT+EMAILCID Set Email Bearer Profile Identifier
13.2.2 AT+EMAILTO Set Timeout Value of SMTP/POP3 Server Response
13.2.3 AT+SMTPSRV Set SMTP Server Address and Port
13.2.4 AT+SMTPAUTH Set User Name and Password for SMTP Authentication
13.2.5 AT+SMTPFROM Set Sender Address and Name
13.2.6 AT+SMTPRCPT Set the Email Recipient(TO/CC/BCC) Address and Name
13.2.7 AT+SMTPSUB Set the Email Subject
13.2.8 AT+SMTPBODY Set the Email Body
13.2.9 AT+SMTPFILE Set the Email Attachment
13.2.10 AT+SMTPSEND Send the Email
13.2.11 AT+SMTPFT Transfer the Email Attachment
13.2.12 AT+SMTPCS Set the Email Charset
13.2.13 AT+POP3SRV Set POP3 Server and Account
13.2.14 AT+POP3IN Log in POP3 Server
13.2.15 AT+POP3NUM Get Email Number and Total Size
13.2.16 AT+POP3LIST Get the Specific Email Size
13.2.17 AT+POP3UIDL Get the Specific Email Unique-id
13.2.18 AT+POP3CMD Get Multi-line Response
13.2.19 AT+POP3READ Read Multi-line Response
13.2.20 AT+POP3DEL Mark the Specific Email to Delete
13.2.21 AT+POP3RSET Unmark the Emails that Be Marked as Deleted
13.2.22 AT+POP3OUT Log Out POP3 Server
14 AT Commands for MMS Application
14.1 Overview
14.2 Detailed Descriptions of Commands
14.2.1 AT+CMMSCURL Set the URL of the MMS Center
14.2.2 AT+CMMSPROTO Set the Protocol Parameter and MMS Proxy
14.2.3 AT+CMMSCID Set the Network Parameters for MMS
14.2.4 AT+CMMSSENDCFG Set the Parameters for Sending MMS
14.2.5 AT+CMMSEDIT Enter or Exit Edit Mode
14.2.6 AT+CMMSDOWN Download the File Data or Title from UART
14.2.7 AT+CMMSDELFILE Delete the File of the Edited MMS by File Index
14.2.8 AT+CMMSSEND Start MMS Sending
14.2.9 AT+CMMSRECP Add Recipients
14.2.10 AT+CMMSCC Add Copy Recipients
14.2.11 AT+CMMSBCC Add Secret Recipients
14.2.12 AT+CMMSDELRECP Delete Recipients
14.2.13 AT+CMMSDELCC Delete Copy Recipients
14.2.14 AT+CMMSDELBCC Delete Secret Recipients
14.2.15 AT+CMMSRECV Receive MMS
14.2.16 AT+CMMSVIEW Get the MMS into Buffer and Show the Information
14.2.17 AT+CMMSREAD Read the Given File of the MMS in the Buffer
14.2.18 AT+CMMSRDPUSH Read the Information of the MMS PUSH Message
14.2.19 AT+CMMSUA Set User Agent
14.2.20 AT+CMMSPROFILE Set User Agent Profile
14.2.21 AT+CMMSTIMEOUT Set MMS Timeout
14.2.22 AT+CMMSSTATUS Get MMS Status
14.2.23 AT+CMMSINIT Initialize MMS Function
14.2.24 AT+CMMSTERM Exit MMS Function
14.2.25 AT+CMMSSCONT Save MMS Context
15 AT Commands for DDET Application
15.1 Overview
15.2 Detailed Descriptions of Commands
15.2.1 AT+DDET DTMF Detection Control
16 AT Commands for RECORD Application
16.1 Overview
16.2 Detailed Descriptions of Commands
16.2.1 AT+CREC Record Operation
16.2.2 AT+CRECORD Record and Send Data to UART
17 AT Commands for TTS Application
17.1 Overview
17.2 Detailed Descriptions of Commands
17.2.1 AT+CTTS TTS Operation
17.2.2 AT+CTTSPARAM Set Parameters of the TTS Playing
17.2.3 AT+CTTSRING Enable/Disable TTS Play During Incoming Call Ring
18 Supported Unsolicited Result Codes
18.1 Summary of CME ERROR Codes
18.2 Summary of CMS ERROR Codes
18.3 Summary of Unsolicited Result Codes
19 AT Commands Examples
19.1 Profile Commands
19.2 SIM Commands
19.3 General Commands
19.4 Call Control Commands
19.5 SIM Toolkit Commands
19.6 Audio Commands
19.7 SMS Commands
19.8 GPRS Commands
19.9 TCPIP Commands
19.10 IP Commands
19.11 PING Commands
19.12 HTTP and FTP Commands
19.13 EMAIL Commands
19.14 MMS Commands
19.15 DDET Commands
19.16 RECORD Commands
19.17 TTS Commands
20 ATC Differences among SIM800 Series
20.1 AT+SIDET
20.2 AT+CMIC
20.3 AT+CBAND
20.4 AT+CHFA
20.5 AT+SGPIO
20.6 AT+SJDR
20.7 AT+CREC
20.8 AT+CTTSPARAM
20.9 AT+CADC
20.10 AT+CSCLK
20.11 AT+CMMSDOWN
20.12 AT+CFGRI
20.13 AT+CLCK
20.14 AT+CBATCHK
20.15 Only Part of Projects Support Following AT Commands
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SIM800 Series_AT Command
Manual_V1.11
SIMCom Confidential File
Smart Machine Smart Decision
Document Title:
Version:
Date:
Status:
SIM800 Series AT Command Manual
1.11
2020-02-24
Release
SIM800 Series_AT Command Manual_V1.11
Document Control ID:
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
Wireless Solutions Co.,Ltd, 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 © 2020 SIMCom Wireless Solutions Co.,Ltd, All Rights Reserved.
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Contents
Version History ......................................................................................... 14
1
Introduction ......................................................................................... 24
1.1 Scope of the document ....................................................................................... 24
1.2 Related documents ............................................................................................. 24
1.3 Conventions and abbreviations........................................................................... 24
1.4 AT Command syntax .......................................................................................... 24
1.4.1 Basic syntax ................................................................................................................... 25
1.4.2 S Parameter syntax ......................................................................................................... 25
1.4.3 Extended Syntax............................................................................................................. 25
1.4.4 Combining AT commands on the same Command line ................................................. 25
1.4.5 Entering successive AT commands on separate lines ..................................................... 26
1.5 Supported character sets ..................................................................................... 26
1.6 Flow control ....................................................................................................... 26
1.6.1 Software flow control (XON/XOFF flow control) ......................................................... 26
1.6.2 Hardware flow control (RTS/CTS flow control) ............................................................ 27
1.7 Definitions .......................................................................................................... 27
1.7.1 Parameter Saving Mode ................................................................................................. 27
1.7.2 Max Response Time ....................................................................................................... 27
2 AT Commands According to V.25TER ............................................. 28
2.1 Overview of AT Commands According to V.25TER ......................................... 28
2.2 Detailed Description of AT Commands According to V.25TER ........................ 29
2.2.1 A/ Re-issues the Last Command Given ....................................................................... 29
2.2.2 ATA Answer an Incoming Call .................................................................................... 29
2.2.3 ATD Mobile Originated Call to Dial A Number .......................................................... 30
2.2.4 ATD> Originate Call to Phone Number in Current Memory ................................ 32
2.2.5 ATD> Originate Call to Phone Number in Memory Which Corresponds to
Field ............................................................................................................................... 33
2.2.6 ATDL Redial Last Telephone Number Used ............................................................... 34
2.2.7 ATE Set Command Echo Mode .................................................................................. 35
2.2.8 ATH Disconnect Existing Connection ......................................................................... 36
2.2.9 ATI Display Product Identification Information ......................................................... 36
2.2.10 ATL Set Monitor speaker loudness ........................................................................... 36
2.2.11 ATM Set Monitor Speaker Mode .............................................................................. 37
2.2.12 +++ Switch from Data Mode or PPP Online Mode to Command Mode................... 37
2.2.13 ATO Switch from Command Mode to Data Mode .................................................... 38
2.2.14 ATP Select Pulse Dialling .......................................................................................... 38
2.2.15 ATQ Set Result Code Presentation Mode.................................................................. 39
2.2.16 ATS0 Set Number of Rings before Automatically Answering the Call ..................... 39
2.2.17 ATS3 Set Command Line Termination Character ..................................................... 40
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2.2.18 ATS4 Set Response Formatting Character ................................................................ 40
2.2.19 ATS5 Set Command Line Editing Character ............................................................. 41
2.2.20 ATS6 Pause Before Blind Dialling ............................................................................ 42
2.2.21 ATS7 Set Number of Seconds to Wait for Connection Completion .......................... 42
2.2.22 ATS8 Set Number of Seconds to Wait for Comma Dial Modifier Encountered in
Dial String of D Command ..................................................................................................... 43
2.2.23 ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier.............. 43
2.2.24 ATT Select Tone Dialing ........................................................................................... 44
2.2.25 ATV TA Response Format ....................................................................................... 44
2.2.26 ATX Set CONNECT Result Code Format and Monitor Call Progress ..................... 45
2.2.27 ATZ Reset Default Configuration ............................................................................. 46
2.2.28 AT&C Set DCD Function Mode ............................................................................... 46
2.2.29 AT&D Set DTR Function Mode................................................................................ 47
2.2.30 AT&F Factory Defined Configuration ...................................................................... 47
2.2.31 AT&V Display Current Configuration ...................................................................... 48
2.2.32 AT&W Store Active Profile ...................................................................................... 48
2.2.33 AT+GCAP Request Complete TA Capabilities List .................................................. 50
2.2.34 AT+GMI Request Manufacturer Identification ......................................................... 51
2.2.35 AT+GMM Request TA Model Identification ............................................................ 51
2.2.36 AT+GMR Request TA Revision Identification of Software Release ......................... 52
2.2.37 AT+GOI Request Global Object Identification ......................................................... 52
2.2.38 AT+GSN Request TA Serial Number Identification (IMEI) ..................................... 53
2.2.39 AT+ICF Set TE-TA Control Character Framing ....................................................... 53
2.2.40 AT+IFC Set TE-TA Local Data Flow Control .......................................................... 54
2.2.41 AT+IPR Set TE-TA Fixed Local Rate ....................................................................... 55
2.2.42 AT+HVOIC Disconnect Voice Call Only .................................................................. 57
3 AT Commands According to 3GPP TS 27.007 .................................. 58
3.1 Overview of AT Command According to 3GPP TS 27.007 ............................... 58
3.2 Detailed Descriptions of AT Command According to 3GPP TS 27.007 ............ 59
3.2.1 AT+CACM Accumulated Call Meter (ACM) Reset or Query .................................... 59
3.2.2 AT+CAMM Accumulated Call Meter Maximum (ACM max) Set or Query ............. 60
3.2.3 AT+CAOC Advice of Charge ..................................................................................... 61
3.2.4 AT+CBST Select Bearer Service Type ........................................................................ 62
3.2.5 AT+CCFC Call Forwarding Number and Conditions Control .................................... 63
3.2.6 AT+CCWA Call Waiting Control ................................................................................ 65
3.2.7AT+CEER Extended Error Report ............................................................................... 67
3.2.8 AT+CGMI Request Manufacturer Identification ........................................................ 69
3.2.9 AT+CGMM Request Model Identification ................................................................. 69
3.2.10 AT+CGMR Request TA Revision Identification of Software Release ...................... 70
3.2.11 AT+CGSN Request Product Serial Number Identification (Identical with +GSN)... 70
3.2.12 AT+CSCS Select TE Character Set ........................................................................... 71
3.2.13 AT+CSTA Select Type of Address ............................................................................ 72
3.2.14 AT+CHLD Call Hold and Multiparty ........................................................................ 73
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3.2.15 AT+CIMI Request International Mobile Subscriber Identity .................................... 74
3.2.16 AT+CLCC List Current Calls of ME ......................................................................... 74
3.2.17 AT+CLCK Facility Lock ........................................................................................... 76
3.2.18 AT+CLIP Calling Line Identification Presentation ................................................... 77
3.2.19 AT+CLIR Calling Line Identification Restriction ..................................................... 79
3.2.20 AT+CMEE Report Mobile Equipment Error............................................................. 80
3.2.21 AT+COLP Connected Line Identification Presentation ............................................ 81
3.2.22 AT+COPS Operator Selection ................................................................................... 82
3.2.23 AT+CPAS Phone Activity Status ............................................................................... 84
3.2.24 AT+CPBF Find Phonebook Entries ........................................................................... 84
3.2.25 AT+CPBR Read Current Phonebook Entries ............................................................ 86
3.2.26 AT+CPBS Select Phonebook Memory Storage ......................................................... 87
3.2.27 AT+CPBW Write Phonebook Entry .......................................................................... 88
3.2.28 AT+CPIN Enter PIN .................................................................................................. 89
3.2.29 AT+CPWD Change Password ................................................................................... 90
3.2.30 AT+CR Service Reporting Control ........................................................................... 91
3.2.31 AT+CRC Set Cellular Result Codes for Incoming Call Indication ........................... 92
3.2.32 AT+CREG Network Registration .............................................................................. 93
3.2.33 AT+CRLP Select Radio Link Protocol Parameters ................................................... 94
3.2.34 AT+CRSM Restricted SIM Access ........................................................................... 95
3.2.35 AT+CSQ Signal Quality Report ................................................................................ 96
3.2.36 AT+VTD Tone Duration............................................................................................ 97
3.2.37 AT+VTS DTMF and Tone Generation ...................................................................... 98
3.2.38 AT+CMUX Multiplexer Control ............................................................................... 98
3.2.39 AT+CNUM Subscriber Number .............................................................................. 100
3.2.40 AT+CPOL Preferred Operator List .......................................................................... 101
3.2.41 AT+COPN Read Operator Names ........................................................................... 102
3.2.42 AT+CFUN Set Phone Functionality ........................................................................ 102
3.2.43 AT+CCLK Clock ..................................................................................................... 103
3.2.44 AT+CSIM Generic SIM Access .............................................................................. 104
3.2.45 AT+CALM Alert Sound Mode ................................................................................ 105
3.2.46 AT+CALS Alert Sound Select................................................................................. 106
3.2.47 AT+CRSL Ringer Sound Level ............................................................................... 107
3.2.48 AT+CLVL Loud Speaker Volume Level ................................................................. 107
3.2.49 AT+CMUT Mute Control ........................................................................................ 108
3.2.50 AT+CPUC Price Per Unit and Currency Table ........................................................ 109
3.2.51 AT+CCWE Call Meter Maximum Event ................................................................ 110
3.2.52 AT+CBC Battery Charge ......................................................................................... 111
3.2.53 AT+CUSD Unstructured Supplementary Service Data ........................................... 111
3.2.54 AT+CSSN Supplementary Services Notification .................................................... 112
4 AT Commands According to 3GPP TS 27.005 ................................ 115
4.1 Overview of AT Commands According to 3GPP TS 27.005 ............................ 115
4.2 Detailed Descriptions of AT Commands According to 3GPP TS 27.005 ......... 115
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4.2.1 AT+CMGD Delete SMS Message............................................................................. 115
4.2.2 AT+CMGF Select SMS Message Format ................................................................. 116
4.2.3 AT+CMGL List SMS Messages from Preferred Store .............................................. 117
4.2.4 AT+CMGR Read SMS Message ............................................................................... 120
4.2.5 AT+CMGS Send SMS Message ................................................................................ 123
4.2.6 AT+CMGW Write SMS Message to Memory .......................................................... 124
4.2.7 AT+CMSS Send SMS Message from Storage .......................................................... 126
4.2.8 AT+CNMI New SMS Message Indications .............................................................. 127
4.2.9 AT+CPMS Preferred SMS Message Storage ............................................................ 129
4.2.10 AT+CRES Restore SMS Settings ............................................................................ 131
4.2.11 AT+CSAS Save SMS Settings ................................................................................ 132
4.2.12 AT+CSCA SMS Service Center Address ................................................................ 132
4.2.13 AT+CSCB Select Cell Broadcast SMS Messages ................................................... 133
4.2.14 AT+CSDH Show SMS Text Mode Parameters ....................................................... 135
4.2.15 AT+CSMP Set SMS Text Mode Parameters ........................................................... 135
4.2.16 AT+CSMS Select Message Service ......................................................................... 136
5 AT Commands for SIM Application Toolkit ................................... 138
5.1 Overview .......................................................................................................... 138
5.2 Detailed Descriptions of Commands ................................................................ 138
5.2.1 AT+STKTRS STK Terminal Response ..................................................................... 138
5.2.2 AT+STKENVS STK Envelope Command ................................................................ 139
5.2.3 AT+STKCALL STK call setup ................................................................................. 140
5.2.4 AT+STKSMS STK SMS delivery ............................................................................. 141
5.2.5 AT+STKSS STK SS setup ........................................................................................ 141
5.2.6 AT+STKUSSD STK USSD setup ............................................................................. 142
5.2.7 AT+STKDTMF STK sending DTMF ....................................................................... 143
5.2.8
+STKPCI STK Proactive Command Indication ................................................ 143
5.2.9 AT+STKMENU STK Main menu command ............................................................ 144
5.2.10 AT+STKPCIS STK URC switch command ............................................................ 145
6 AT Commands Special for SIMCom ............................................... 146
6.1 Overview .......................................................................................................... 146
6.2 Detailed Descriptions of Commands ................................................................ 148
6.2.1 AT+SIDET Change the Side Tone Gain Level ....................................................... 148
6.2.2 AT+CPOWD Power off ............................................................................................ 149
6.2.3 AT+SPIC Times Remained to Input SIM PIN/PUK ................................................. 149
6.2.4 AT+CMIC Change the Microphone Gain Level ....................................................... 150
6.2.5 AT+CALA Set Alarm Time ...................................................................................... 151
6.2.6 AT+CALD Delete Alarm .......................................................................................... 152
6.2.7 AT+CADC Read ADC ............................................................................................. 153
6.2.8 AT+CSNS Single Numbering Scheme ..................................................................... 153
6.2.9 AT+CDSCB Reset Cell Broadcast ............................................................................ 154
6.2.10 AT+CMOD Configure Alternating Mode Calls ..................................................... 154
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6.2.11 AT+CFGRI Indicate RI When Using URC ............................................................ 155
6.2.12 AT+CLTS Get Local Timestamp ............................................................................ 156
6.2.13 AT+CLDTMF Local DTMF Tone Generation ....................................................... 157
6.2.14 AT+CDRIND CS Voice/Data Call Termination Indication ................................... 158
6.2.15 AT+CSPN Get Service Provider Name from SIM .................................................. 159
6.2.16 AT+CCVM Get and Set the Voice Mail Number on the SIM ................................. 160
6.2.17 AT+CBAND Get and Set Mobile Operation Band ................................................. 161
6.2.18 AT+CHF Configure Hands Free Operation ............................................................. 162
6.2.19 AT+CHFA Swap the Audio Channels ..................................................................... 163
6.2.20 AT+CSCLK Configure Slow Clock ........................................................................ 163
6.2.21 AT+CENG Switch on or off Engineering Mode ..................................................... 164
6.2.22 AT+SCLASS0 Store Class 0 SMS to SIM When Received Class 0 SMS .............. 167
6.2.23 AT+CCID Show ICCID .......................................................................................... 168
6.2.25 AT+CMGDA Delete All SMS ................................................................................ 168
6.2.26 AT+STTONE Play SIM Toolkit Tone .................................................................... 169
6.2.27 AT+SIMTONE Generate Specifically Tone ........................................................... 170
6.2.28 AT+CCPD Enable or Disable Alpha String ............................................................ 171
6.2.29 AT+CGID Get SIM Card Group Identifier ............................................................. 172
6.2.30 AT+MORING Show State of Mobile Originated Call............................................ 172
6.2.31 AT+CMGHEX Enable or Disable Sending Non-ASCII Character SMS ............... 173
6.2.32 AT+CCODE Configure SMS Code Mode .............................................................. 174
6.2.33 AT+CIURC Enable or Disable Initial URC Presentation ....................................... 175
6.2.34 AT+CPSPWD Change PS Super Password ............................................................ 175
6.2.35 AT+EXUNSOL Enable or Disable Proprietary Unsolicited Indications ................. 176
6.2.36 AT+CGMSCLASS Change GPRS Multislot Class ................................................ 177
6.2.37 AT+CDEVICE View Current Flash Device Type .................................................. 177
6.2.38 AT+CCALR Call Ready Query .............................................................................. 178
6.2.39 AT+GSV Display Product Identification Information ............................................. 178
6.2.40 AT+SGPIO Control the GPIO ................................................................................. 179
6.2.41 AT+SPWM Generate the Pulse-Width-Modulation ................................................ 179
6.2.42 AT+ECHO Echo Cancellation Control ................................................................... 180
6.2.43 AT+CAAS Control Auto Audio Switch .................................................................. 181
6.2.44 AT+SVR Configure Voice Coding Type for Voice Calls ......................................... 182
6.2.45 AT+GSMBUSY Reject Incoming Call .................................................................... 183
6.2.46 AT+CEMNL Set the List of Emergency Number ................................................... 184
6.2.47 AT*CELLLOCK Set the List of ARFCN Which Needs to Be Locked ................... 185
6.2.48 AT+SLEDS Set the Timer Period of Net Light ....................................................... 186
6.2.49 AT+CBUZZERRING Use the Buzzer Sound as the Incoming Call Ring ............... 187
6.2.50 AT+CEXTERNTONE Close or Open the Microphone ........................................... 187
6.2.51 AT+CNETLIGHT Close the Net Light or Open It to Shining ................................ 188
6.2.52 AT+CWHITELIST Set the White List .................................................................... 189
6.2.53 AT+CSDT Switch on or off Detecting SIM Card ................................................... 190
6.2.54 AT+CSMINS SIM Inserted Status Reporting ......................................................... 190
6.2.55 AT+CSGS Netlight Indication of GPRS Status ..................................................... 191
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6.2.56 AT+CMICBIAS Close or Open the MICBIAS ....................................................... 192
6.2.57 AT+DTAM Set TTS and RECORD Play Mode in Call ......................................... 193
6.2.58 AT+SJDR
Set Jamming Detection Function ......................................................... 194
6.2.59 AT+CPCMCFG Set PCM Parameter ...................................................................... 196
6.2.60 AT+CPCMSYNC Set PCM Sync Parameter........................................................... 196
6.2.61 AT+CANT Antenna Detecting ................................................................................ 197
6.2.62 AT+CAGCSET Close or Open AGC Function ....................................................... 198
6.2.63 AT+SD2PCM SD and PCM Switch Function ......................................................... 199
6.2.64 AT+SKPD Keypad Detecting Function ................................................................... 200
6.2.65 AT+SIMTONEX Custom Tones ............................................................................ 201
6.2.66 AT+CROAMING Roaming State ........................................................................... 202
6.2.67 AT+CNETSCAN Perform a Net Survey to Show All the Cells’ Information ........ 202
6.2.68 AT+CMNRP Dual Serial Port Feature .................................................................... 203
6.2.69 AT+CEGPRS Switch on or off EDGE ................................................................... 204
6.2.70 AT+CGPIO Control the GPIO by PIN Index .......................................................... 205
6.2.71 AT+CMEDPLAY Play Audio File .......................................................................... 206
6.2.72 AT+CMEDIAVOL Control the Volume when Playing Audio File .......................... 207
6.2.73 AT+SNDLEVEL Set the Sound Level of Special AT Command ............................ 207
6.2.74 AT+ECHARGE Charge Control ............................................................................. 208
6.2.75 AT+SIMTIMER Modify the Poll Interval Time Requested by SIM Card ............. 209
6.2.76 AT+SPE Speech Enhancement Control .................................................................. 209
6.2.77 AT+CCONCINDEX Report Concatenated SMS Index .......................................... 210
6.2.78 AT+SDMODE SD Mode Switch Function ............................................................. 210
6.2.79 AT+SRSPT Control SMS Retransmission .............................................................. 211
6.2.80 AT+CELLIST Perform a Net Survey to Show All the Cells’ Information ............. 212
6.2.81 AT+CLIST Query AT ............................................................................................. 213
6.2.82 AT+CBATCHK Set VBAT Checking Feature ON/OFF ........................................ 214
6.2.83 AT+DLYRI Control the Delay Time before Indicate RI when Using URC ...... 214
7 AT Commands for GPRS Support ................................................... 216
7.1 Overview of AT Commands for GPRS Support .......................................... 216
7.2 Detailed Descriptions of AT Commands for GPRS Support ....................... 216
AT+CGATT Attach or Detach from GPRS Service ........................................... 216
7.2.1
AT+CGDCONT Define PDP Context ................................................................ 217
7.2.2
AT+CGQMIN Quality of Service Profile (Minimum Acceptable) .................... 218
7.2.3
AT+CGQREQ Quality of Service Profile (Requested) ...................................... 220
7.2.4
AT+CGACT PDP Context Activate or Deactivate ............................................. 221
7.2.5
AT+CGDATA Enter Data State .......................................................................... 222
7.2.6
AT+CGPADDR Show PDP Address .................................................................. 222
7.2.7
AT+CGCLASS GPRS Mobile Station Class ..................................................... 223
7.2.8
7.2.9
AT+CGEREP Control Unsolicited GPRS Event Reporting ............................... 224
7.2.10 AT+CGREG Network Registration Status ......................................................... 225
7.2.11 AT+CGSMS Select Service for MO SMS Messages ......................................... 226
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