Version History 8
1 Introduction 9
1.1 Scope of the document 9
1.2 Related documents 9
1.3 Conventions and abbreviations 9
1.4 AT Command syntax 9
1.5 Supported character sets 11
1.6 Flow control 11
1.7 Definitions 12
2 AT Commands According to V.25TER 13
2.1 Overview of AT Commands According to V.25TER 13
2.2 Detailed Description of AT Commands According to V.25TER 14
3 AT Commands According to 3GPP TS 27.007 34
3.1 Overview of AT Command According to 3GPP TS 27.007 34
3.2 Detailed Descriptions of AT Command According to 3GPP TS 27.007 34
4 AT Commands According to 3GPP TS 27.005 54
4.1 Overview of AT Commands According to 3GPP TS 27.005 54
4.2 Detailed Descriptions of AT Commands According to 3GPP TS 27.005 55
5 AT Commands Special for SIMCom 76
5.1 Overview 76
5.2 Detailed Descriptions of Commands 77
6 AT Commands for IP Application 98
6.1 Overview 98
6.2 Detailed Descriptions of Commands 98
7 AT Commands for GPRS Support 100
7.1 Overview of AT Commands for GPRS Support 100
7.2 Detailed Descriptions of AT Commands for GPRS Support 100
8 AT Commands for TCPIP Application Toolkit 108
8.1 Overview 108
8.2 Detailed Descriptions of Commands 109
9 AT Commands for HTTP Application 137
9.1 Overview 137
9.2 Detailed Descriptions of Commands 137
10 AT Commands for GNSS Application 145
10.1 Overview 145
10.2 Detailed Descriptions of Commands 146
11 Supported Unsolicited Result Codes 153
11.1 Summary of CME ERROR Codes 153
11.2 Summary of CMS ERROR Codes 156
11.3 Summary of Unsolicited Result Codes 160
Version History
Introduction
Scope of the document
Related documents
Conventions and abbreviations
AT Command syntax
Basic syntax
S Parameter syntax
Extended Syntax
Combining AT commands on the same Command line
Entering successive AT commands on separate lines
Supported character sets
Flow control
Software flow control (XON/XOFF flow control)
Hardware flow control (RTS/CTS flow control)
Definitions
Parameter Saving Mode
AT Commands According to V.25TER
Overview of AT Commands According to V.25TER
Detailed Description of AT Commands According to V.25TER
A/  Re-issues the Last Command Given
ATD  Mobile Originated Call to Dial A Number
ATE  Set Command Echo Mode
ATH  Disconnect Existing Connection
ATI  Display Product Identification Information
ATL  Set Monitor speaker loudness
ATM  Set Monitor Speaker Mode
+++  Switch from Data Mode or PPP Online Mode to Command Mode
ATO  Switch from Command Mode to Data Mode
ATQ  Set Result Code Presentation Mode
ATS0  Set Number of Rings before Automatically Answering the Call
ATS3  Set Command Line Termination Character
ATS4  Set Response Formatting Character
ATS5  Set Command Line Editing Character
ATS6  Pause Before Blind Dialling
ATS7  Set Number of Seconds to Wait for Connection Completion
ATS8  Set Number of Seconds to Wait for Comma Dial Modifier Encountered in Dial String of D Command
ATS10  Set Disconnect Delay after Indicating the Absence of Data Carrier
ATV  TA Response Format
ATX  Set CONNECT Result Code Format and Monitor Call Progress
ATZ  Reset Default Configuration
AT&C  Set DCD Function Mode
AT&D  Set DTR Function Mode
AT&F  Factory Defined Configuration
AT&V  Display Current Configuration
AT&E  Set CONNECT Result Code Format About Speed
AT+GCAP  Request Complete TA Capabilities List
AT+GMI  Request Manufacturer Identification
AT+GMM  Request TA Model Identification
AT+GMR  Request TA Revision Identification of Software Release
AT+GOI  Request Global Object Identification
AT+GSN  Request TA Serial Number Identification (IMEI)
AT+ICF  Set TE-TA Control Character Framing
AT+IFC  Set TE-TA Local Data Flow Control
AT+IPR  Set TE-TA Fixed Local Rate
AT Commands According to 3GPP TS 27.007
Overview of AT Command According to 3GPP TS 27.007
Detailed Descriptions of AT Command According to 3GPP TS 27.007
AT+CGMI  Request Manufacturer Identification
AT+CGMM  Request Model Identification
AT+CGMR  Request TA Revision Identification of Software Release
AT+CGSN  Request Product Serial Number Identification
AT+CSCS  Select TE Character Set
AT+CIMI  Request International Mobile Subscriber Identity
AT+CLCK  Facility Lock
AT+CMEE  Report Mobile Equipment Error
AT+COPS  Operator Selection
AT+CPAS  Phone Activity Status
AT+CPIN  Enter PIN
AT+CPWD  Change Password
AT+CRC  Set Cellular Result Codes for Incoming Call Indication
AT+CREG  Network Registration
AT+CRSM  Restricted SIM Access
AT+CSQ  Signal Quality Report
AT+CPOL  Preferred Operator List
AT+COPN  Read Operator Names
AT+CFUN  Set Phone Functionality
AT+CCLK  Clock
AT+CSIM  Generic SIM Access
AT+CBC  Battery Charge
AT+CUSD  Unstructured Supplementary Service Data
AT Commands According to 3GPP TS 27.005
Overview of AT Commands According to 3GPP TS 27.005
Detailed Descriptions of AT Commands According to 3GPP TS 27.005
AT+CMGD  Delete SMS Message
AT+CMGF  Select SMS Message Format
AT+CMGL  List SMS Messages from Preferred Store
AT+CMGR  Read SMS Message
AT+CMGS  Send SMS Message
AT+CMGW  Write SMS Message to Memory
AT+CMSS  Send SMS Message from Storage
AT+CNMI  New SMS Message Indications
AT+CPMS  Preferred SMS Message Storage
AT+CRES  Restore SMS Settings
AT+CSAS  Save SMS Settings
AT+CSCA  SMS Service Center Address
AT+CSDH  Show SMS Text Mode Parameters
AT+CSMP  Set SMS Text Mode Parameters
AT+CSMS  Select Message Service
AT Commands Special for SIMCom
Overview
Detailed Descriptions of Commands
AT+CPOWD  Power off
AT+CADC  Read ADC
AT+CFGRI  Indicate RI When Using URC
AT+CLTS  Get Local Timestamp
AT+CBAND  Get and Set Mobile Operation Band
AT+CNBP  Set the state of the band preference
AT+CNSMOD Show network system mode
AT+CSCLK  Configure Slow Clock
AT+CCID  Show ICCID
AT+CDEVICE  View Current Flash Device Type
AT+GSV  Display Product Identification Information
AT+SGPIO  Control the GPIO
AT+SLEDS  Set the Timer Period of Net Light
AT+CNETLIGHT  Close the Net Light or Open It to Shining
AT+CSGS  Netlight Indication of GPRS Status
AT+CGPIO  Control the GPIO by PIN Index
AT+CBATCHK  Set VBAT Checking Feature ON/OFF
AT+CNMP  Preferred mode selection
AT+CMNB  Preferred selection between CAT-M and NB-IoT
AT+CPSMS  Power Saving Mode Setting
AT+CEDRXS  Entended-DRX Setting
AT+CPSI  Inquiring UE system information
AT+CGNAPN  Get Network APN in CAT-M Or NB-IOT
AT+CSDP  Service Domain Preference
AT+MCELLLOCK Lock the special CAT-M cell
AT+NCELLLOCK Lock the special NB-IOT cell
AT+NBSC  Config NB-IOT Scrambling Feature
AT Commands for IP Application
Overview
Detailed Descriptions of Commands
AT+SAPBR  Bearer Settings for Applications Based on IP
AT Commands for GPRS Support
Overview of AT Commands for GPRS Support
Detailed Descriptions of AT Commands for GPRS Support
AT+CGATT  Attach or Detach from GPRS Service
AT+CGDCONT  Define PDP Context
AT+CGACT  PDP Context Activate or Deactivate
AT+CGPADDR  Show PDP Address
AT+CGREG  Network Registration Status
AT+CGSMS  Select Service for MO SMS Messages
AT Commands for TCPIP Application Toolkit
Overview
Detailed Descriptions of Commands
AT+CIPMUX  Start Up Multi-IP Connection
AT+CIPSTART  Start Up TCP or UDP Connection
AT+CIPSEND  Send Data Through TCP or UDP Connection
AT+CIPQSEND  Select Data Transmitting Mode
AT+CIPACK  Query Previous Connection Data Transmitting State
AT+CIPCLOSE  Close TCP or UDP Connection
AT+CIPSHUT  Deactivate GPRS PDP Context
AT+CLPORT  Set Local Port
AT+CSTT  Start Task and Set APN, USER NAME, PASSWORD
AT+CIICR  Bring Up Wireless Connection with GPRS
AT+CIFSR  Get Local IP Address
AT+CIFSREX  Get Local IP Address extend
AT+CIPSTATUS  Query Current Connection Status
AT+CDNSCFG  Configure Domain Name Server
AT+CDNSGIP  Query the IP Address of Given Domain Name
AT+CIPHEAD  Add an IP Head at the Beginning of a Package Received
AT+CIPATS  Set Auto Sending Timer
AT+CIPSPRT  Set Prompt of ‘>’ When Module Sends Data
AT+CIPSERVER  Configure Module as Server
AT+CIPCSGP  Set CSD or GPRS for Connection Mode
AT+CIPSRIP  Show Remote IP Address and Port When Received Data
AT+CIPDPDP  Set Whether to Check State of GPRS Network Timing
AT+CIPMODE  Select TCPIP Application Mode
AT+CIPCCFG  Configure Transparent Transfer Mode
AT+CIPSHOWTP  Display Transfer Protocol in IP Head When Received Data
AT+CIPUDPMODE  UDP Extended Mode
AT+CIPRXGET  Get Data from Network Manually
AT+CIPRDTIMER  Set Remote Delay Timer
AT+CIPSGTXT  Select GPRS PDP context
AT+CIPSENDHEX  Set CIPSEND Data Format to Hex
AT+CIPHEXS  Set Output-data Format with suffix
AT Commands for HTTP Application
Overview
Detailed Descriptions of Commands
AT+HTTPINIT  Initialize HTTP Service
AT+HTTPTERM  Terminate HTTP Service
AT+HTTPPARA  Set HTTP Parameters Value
AT+HTTPDATA  Input HTTP Data
AT+HTTPACTION  HTTP Method Action
AT+HTTPREAD  Read the HTTP Server Response
AT+HTTPSTATUS  Read HTTP Status
AT+HTTPHEAD  Read the HTTP Header Information of Server Response
AT Commands for GNSS Application
Overview
Detailed Descriptions of Commands
AT+CGNSPWR  GNSS Power Control
AT+CGNSINF  GNSS Navigation Information Parsed From NMEA Sentences
AT+CGNSURC  GNSS Navigation URC Report
AT+CGNSPOT  GNSS Nmea Out Port Set
AT+CGNSCOLD  GNSS Cold Start
AT+CGNSWARM  GNSS Warm Start
AT+CGNSHOT  GNSS Hot Start
AT+CGNSMOD  GNSS Work Mode Set
AT+CGNSCFG  GNSS NMEA OUT CONFIG
Supported Unsolicited Result Codes
Summary of CME ERROR Codes
Summary of CMS ERROR Codes
Summary of Unsolicited Result Codes