SIMCom SIM800 User Manual

SIM800 Series_AT Command Manual_V1.09

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Document Title: SIM800 Series AT Command Manual Version: 1.09 Date: 2015-08-03 Status: Release Document Control ID: SIM800 Series_AT Command Manual_V1.09

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 Shanghai

SIMCom Wireless Solutions 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

registration of a utility model or design. All specification supplied herein are subject to change

without notice at any time.

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Contents

Version History.........................................................................................14

1 Introduction............................................................................................22

1.1 Scope of the document .......................................................................................22

1.2 Related documents..............................................................................................22

1.3 Conventions and abbreviations ..........................................................................22

1.4 AT Command syntax ..........................................................................................22

1.4.1 Basic syntax ...................................................................................................................23

1.4.2 S Parameter syntax.........................................................................................................23

1.4.3 Extended Syntax.............................................................................................................23

1.4.4 Combining AT commands on the same Command line.................................................23

1.4.5 Entering successive AT commands on separate lines..................................................... 24

1.5 Supported character sets..................................................................................... 24

1.6 Flow control .......................................................................................................24

1.6.1 Software flow control (XON/XOFF flow control).........................................................24

1.6.2 Hardware flow control (RTS/CTS flow control)............................................................25

1.7 Definitions ..........................................................................................................25

1.7.1 Parameter Saving Mode .................................................................................................25

1.7.2 Max Response Time.......................................................................................................26

2 AT Commands According to V.25TER ................................................27

2.1 Overview of AT Commands According to V.25TER .........................................27

2.2 Detailed Description of AT Commands According to V.25TER ........................28

2.2.1 A/ Re-issues the Last Command Given.......................................................................28

2.2.2 ATA Answer an Incoming Call....................................................................................28

2.2.3 ATD Mobile Originated Call to Dial A Number..........................................................29

2.2.4 ATD><n> Originate Call to Phone Number in Current Memory................................31

2.2.5 ATD><str> Originate Call to Phone Number in Memory Which Corresponds to

Field <str>...............................................................................................................................32

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.........................................................................35

2.2.9 ATI Display Product Identification Information .........................................................35

2.2.10 ATL Set Monitor speaker loudness............................................................................36

2.2.11 ATM Set Monitor Speaker Mode ..............................................................................36

2.2.12 +++ Switch from Data Mode or PPP Online Mode to Command Mode ..................36

2.2.13 ATO Switch from Command Mode to Data Mode....................................................37

2.2.14 ATP Select Pulse Dialling..........................................................................................37

2.2.15 ATQ Set Result Code Presentation Mode..................................................................38

2.2.16 ATS0 Set Number of Rings before Automatically Answering the Call..................... 38

2.2.17 ATS3 Set Command Line Termination Character .....................................................39

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2.2.18 ATS4 Set Response Formatting Character ................................................................39

2.2.19 ATS5 Set Command Line Editing Character.............................................................40

2.2.20 ATS6 Pause Before Blind Dialling ............................................................................ 41

2.2.21 ATS7 Set Number of Seconds to Wait for Connection Completion.......................... 41

2.2.22 ATS8 Set Number of Seconds to Wait for Comma Dial Modifier Encountered in

Dial String of D Command .....................................................................................................42

2.2.23 ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier..............42

2.2.24 ATT Select Tone Dialing ........................................................................................... 43

2.2.25 ATV TA Response Format .......................................................................................43

2.2.26 ATX Set CONNECT Result Code Format and Monitor Call Progress ..................... 44

2.2.27 ATZ Reset Default Configuration .............................................................................45

2.2.28 AT&C Set DCD Function Mode ...............................................................................45

2.2.29 AT&D Set DTR Function Mode................................................................................46

2.2.30 AT&F Factory Defined Configuration ......................................................................46

2.2.31 AT&V Display Current Configuration ......................................................................47

2.2.32 AT&W Store Active Profile ......................................................................................47

2.2.33 AT+GCAP Request Complete TA Capabilities List ..................................................49

2.2.34 AT+GMI Request Manufacturer Identification .........................................................49

2.2.35 AT+GMM Request TA Model Identification ............................................................50

2.2.36 AT+GMR Request TA Revision Identification of Software Release.........................50

2.2.37 AT+GOI Request Global Object Identification .........................................................51

2.2.38 AT+GSN Request TA Serial Number Identification (IMEI) .....................................51

2.2.39 AT+ICF Set TE-TA Control Character Framing........................................................52

2.2.40 AT+IFC Set TE-TA Local Data Flow Control ..........................................................53

2.2.41 AT+IPR Set TE-TA Fixed Local Rate .......................................................................54

2.2.42 AT+HVOIC Disconnect Voice Call Only.................................................................. 55

3 AT Commands According to 3GPP TS 27.007.....................................56

3.1 Overview of AT Command According to 3GPP TS 27.007 ...............................56

3.2 Detailed Descriptions of AT Command According to 3GPP TS 27.007 ............57

3.2.1 AT+CACM Accumulated Call Meter (ACM) Reset or Query.................................... 57

3.2.2 AT+CAMM Accumulated Call Meter Maximum (ACM max) Set or Query .............58

3.2.3 AT+CAOC Advice of Charge ..................................................................................... 59

3.2.4 AT+CBST Select Bearer Service Type........................................................................60

3.2.5 AT+CCFC Call Forwarding Number and Conditions Control ....................................61

3.2.6 AT+CCWA Call Waiting Control ................................................................................63

3.2.7AT+CEER Extended Error Report...............................................................................64

3.2.8 AT+CGMI Request Manufacturer Identification ........................................................ 67

3.2.9 AT+CGMM Request Model Identification.................................................................. 67

3.2.10 AT+CGMR Request TA Revision Identification of Software Release...................... 68

3.2.11 AT+CGSN Request Product Serial Number Identification (Identical with +GSN)...68

3.2.12 AT+CSCS Select TE Character Set ...........................................................................69

3.2.13 AT+CSTA Select Type of Address ............................................................................70

3.2.14 AT+CHLD Call Hold and Multiparty........................................................................70

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3.2.15 AT+CIMI Request International Mobile Subscriber Identity .................................... 71

3.2.16 AT+CLCC List Current Calls of ME.........................................................................72

3.2.17 AT+CLCK Facility Lock...........................................................................................73

3.2.18 AT+CLIP Calling Line Identification Presentation ...................................................75

3.2.19 AT+CLIR Calling Line Identification Restriction.....................................................76

3.2.20 AT+CMEE Report Mobile Equipment Error.............................................................77

3.2.21 AT+COLP Connected Line Identification Presentation ............................................78

3.2.22 AT+COPS Operator Selection ................................................................................... 80

3.2.23 AT+CPAS Phone Activity Status...............................................................................81

3.2.24 AT+CPBF Find Phonebook Entries...........................................................................82

3.2.25 AT+CPBR Read Current Phonebook Entries............................................................ 83

3.2.26 AT+CPBS Select Phonebook Memory Storage......................................................... 84

3.2.27 AT+CPBW Write Phonebook Entry..........................................................................85

3.2.28 AT+CPIN Enter PIN..................................................................................................86

3.2.29 AT+CPWD Change Password ................................................................................... 87

3.2.30 AT+CR Service Reporting Control ........................................................................... 88

3.2.31 AT+CRC Set Cellular Result Codes for Incoming Call Indication...........................89

3.2.32 AT+CREG Network Registration..............................................................................90

3.2.33 AT+CRLP Select Radio Link Protocol Parameters ...................................................92

3.2.34 AT+CRSM Restricted SIM Access ........................................................................... 92

3.2.35 AT+CSQ Signal Quality Report ................................................................................93

3.2.36 AT+VTD Tone Duration............................................................................................94

3.2.37 AT+VTS DTMF and Tone Generation......................................................................95

3.2.38 AT+CMUX Multiplexer Control...............................................................................96

3.2.39 AT+CNUM Subscriber Number................................................................................97

3.2.40 AT+CPOL Preferred Operator List............................................................................98

3.2.41 AT+COPN Read Operator Names............................................................................. 99

3.2.42 AT+CFUN Set Phone Functionality ........................................................................100

3.2.43 AT+CCLK Clock.....................................................................................................101

3.2.44 AT+CSIM Generic SIM Access ..............................................................................101

3.2.45 AT+CALM Alert Sound Mode................................................................................ 102

3.2.46 AT+CALS Alert Sound Select.................................................................................103

3.2.47 AT+CRSL Ringer Sound Level...............................................................................104

3.2.48 AT+CLVL Loud Speaker Volume Level .................................................................104

3.2.49 AT+CMUT Mute Control........................................................................................105

3.2.50 AT+CPUC Price Per Unit and Currency Table........................................................106

3.2.51 AT+CCWE Call Meter Maximum Event ................................................................107

3.2.52 AT+CBC Battery Charge......................................................................................... 108

3.2.53 AT+CUSD Unstructured Supplementary Service Data ........................................... 108

3.2.54 AT+CSSN Supplementary Services Notification .................................................... 109

4 AT Commands According to 3GPP TS 27.005...................................112

4.1 Overview of AT Commands According to 3GPP TS 27.005............................ 112

4.2 Detailed Descriptions of AT Commands According to 3GPP TS 27.005.........112

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4.2.1 AT+CMGD Delete SMS Message............................................................................. 112

4.2.2 AT+CMGF Select SMS Message Format ................................................................. 113

4.2.3 AT+CMGL List SMS Messages from Preferred Store.............................................. 114

4.2.4 AT+CMGR Read SMS Message ............................................................................... 117

4.2.5 AT+CMGS Send SMS Message................................................................................120

4.2.6 AT+CMGW Write SMS Message to Memory ..........................................................121

4.2.7 AT+CMSS Send SMS Message from Storage ..........................................................123

4.2.8 AT+CNMI New SMS Message Indications ..............................................................124

4.2.9 AT+CPMS Preferred SMS Message Storage ............................................................126

4.2.10 AT+CRES Restore SMS Settings ............................................................................ 127

4.2.11 AT+CSAS Save SMS Settings ................................................................................128

4.2.12 AT+CSCA SMS Service Center Address ................................................................129

4.2.13 AT+CSCB Select Cell Broadcast SMS Messages................................................... 130

4.2.14 AT+CSDH Show SMS Text Mode Parameters .......................................................131

4.2.15 AT+CSMP Set SMS Text Mode Parameters ...........................................................132

4.2.16 AT+CSMS Select Message Service.........................................................................133

5 AT Commands for SIM Application Toolkit ......................................135

5.1 Overview ..........................................................................................................135

5.2 Detailed Descriptions of Commands................................................................135

5.2.1 AT+STKTRS STK Terminal Response .....................................................................135

5.2.2 AT+STKENVS STK Envelope Command................................................................136

5.2.3 AT+STKCALL STK call setup .................................................................................137

5.2.4 AT+STKSMS STK SMS delivery............................................................................. 138

5.2.5 AT+STKSS STK SS setup ........................................................................................138

5.2.6 AT+STKUSSD STK USSD setup.............................................................................139

5.2.7 AT+STKDTMF STK sending DTMF .......................................................................139

5.2.8 +STKPCI STK Proactive Command Indication .......................................................140

5.2.9 AT+STKMENU STK Main menu command ............................................................ 141

5.2.10 AT+STKPCIS STK URC switch command ............................................................ 141

6 AT Commands Special for SIMCom ..................................................143

6.1 Overview ..........................................................................................................143

6.2 Detailed Descriptions of Commands................................................................145

6.2.1 AT+SIDET Change the Side Tone Gain Level.......................................................145

6.2.2 AT+CPOWD Power off............................................................................................146

6.2.3 AT+SPIC Times Remained to Input SIM PIN/PUK.................................................146

6.2.4 AT+CMIC Change the Microphone Gain Level.......................................................146

6.2.5 AT+CALA Set Alarm Time......................................................................................148

6.2.6 AT+CALD Delete Alarm.......................................................................................... 149

6.2.7 AT+CADC Read ADC .............................................................................................149

6.2.8 AT+CSNS Single Numbering Scheme .....................................................................150

6.2.9 AT+CDSCB Reset Cell Broadcast............................................................................151

6.2.10 AT+CMOD Configure Alternating Mode Calls .....................................................151

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6.2.11 AT+CFGRI Indicate RI When Using URC ............................................................151

6.2.12 AT+CLTS Get Local Timestamp............................................................................ 152

6.2.13 AT+CLDTMF Local DTMF Tone Generation .......................................................154

6.2.14 AT+CDRIND CS Voice/Data Call Termination Indication ...................................155

6.2.15 AT+CSPN Get Service Provider Name from SIM ..................................................156

6.2.16 AT+CCVM Get and Set the Voice Mail Number on the SIM .................................156

6.2.17 AT+CBAND Get and Set Mobile Operation Band .................................................157

6.2.18 AT+CHF Configure Hands Free Operation............................................................. 158

6.2.19 AT+CHFA Swap the Audio Channels ..................................................................... 159

6.2.20 AT+CSCLK Configure Slow Clock........................................................................ 160

6.2.21 AT+CENG Switch on or off Engineering Mode .....................................................161

6.2.22 AT+SCLASS0 Store Class 0 SMS to SIM When Received Class 0 SMS ..............163

6.2.23 AT+CCID Show ICCID .......................................................................................... 164

6.2.24 AT+CMTE Set Critical Temperature Operating Mode or Query Temperature......164

6.2.25 AT+CMGDA Delete All SMS................................................................................165

6.2.26 AT+STTONE Play SIM Toolkit Tone.................................................................... 166

6.2.27 AT+SIMTONE Generate Specifically Tone...........................................................167

6.2.28 AT+CCPD Enable or Disable Alpha String............................................................168

6.2.29 AT+CGID Get SIM Card Group Identifier.............................................................168

6.2.30 AT+MORING Show State of Mobile Originated Call............................................169

6.2.31 AT+CMGHEX Enable or Disable Sending Non-ASCII Character SMS ...............170

6.2.32 AT+CCODE Configure SMS Code Mode..............................................................170

6.2.33 AT+CIURC Enable or Disable Initial URC Presentation.......................................171

6.2.34 AT+CPSPWD Change PS Super Password ............................................................172

6.2.35 AT+EXUNSOL Enable or Disable Proprietary Unsolicited Indications .................172

6.2.36 AT+CGMSCLASS Change GPRS Multislot Class ................................................173

6.2.37 AT+CDEVICE View Current Flash Device Type ..................................................174

6.2.38 AT+CCALR Call Ready Query ..............................................................................174

6.2.39 AT+GSV Display Product Identification Information.............................................174

6.2.40 AT+SGPIO Control the GPIO.................................................................................175

6.2.41 AT+SPWM Generate the Pulse-Width-Modulation................................................ 176

6.2.42 AT+ECHO Echo Cancellation Control ...................................................................176

6.2.43 AT+CAAS Control Auto Audio Switch ..................................................................177

6.2.44 AT+SVR Configure Voice Coding Type for Voice Calls......................................... 178

6.2.45 AT+GSMBUSY Reject Incoming Call.................................................................... 179

6.2.46 AT+CEMNL Set the List of Emergency Number ...................................................180

6.2.47 AT*CELLLOCK Set the List of ARFCN Which Needs to Be Locked...................181

6.2.48 AT+SLEDS Set the Timer Period of Net Light .......................................................182

6.2.49 AT+CBUZZERRING Use the Buzzer Sound as the Incoming Call Ring...............183

6.2.50 AT+CEXTERNTONE Close or Open the Microphone...........................................183

6.2.51 AT+CNETLIGHT Close the Net Light or Open It to Shining ................................184

6.2.52 AT+CWHITELIST Set the White List ....................................................................185

6.2.53 AT+CSDT Switch on or off Detecting SIM Card...................................................186

6.2.54 AT+CSMINS SIM Inserted Status Reporting.........................................................186

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6.2.55 AT+CSGS Netlight Indication of GPRS Status..................................................... 187

6.2.56 AT+CMICBIAS Close or Open the MICBIAS ......................................................188

6.2.57 AT+DTAM Set TTS and RECORD Play Mode in Call .........................................189

6.2.58 AT+SJDR Set Jamming Detection Function ...........................................................189

6.2.59 AT+CPCMCFG Set PCM Parameter ......................................................................191

6.2.60 AT+CPCMSYNC Set PCM Sync Parameter........................................................... 192

6.2.61 AT+CANT Antenna Detecting ................................................................................193

6.2.62 AT+CAGCSET Close or Open AGC Function .......................................................194

6.2.63 AT+SD2PCM SD and PCM Switch Function .........................................................194

6.2.64 AT+SKPD Keypad Detecting Function................................................................... 195

6.2.65 AT+SIMTONEX Custom Tones ...............................................................................196

6.2.66 AT+CROAMING Roaming State..............................................................................197

6.2.67 AT+CNETSCAN Perform a Net Survey to Show All the Cells’ Information...........197

6.2.68 AT+CMNRP Dual Serial Port Feature....................................................................198

6.2.69 AT+CEGPRS Switch on or off EDGE ...................................................................199

6.2.70 AT+CGPIO Control the GPIO by PIN Index ..........................................................200

6.2.71 AT+CMEDPLAY Play Audio File ..........................................................................201

6.2.72 AT+CMEDIAVOL Control the Volume when Playing Audio File..........................202

6.2.73 AT+SNDLEVEL Set the Sound Level of Special AT Command ............................202

6.2.74 AT+ECHARGE Charge Control............................................................................. 203

6.2.75 AT+SIMTIMER Modify the Poll Interval Time Requested by SIM Card .............204

6.2.76 AT+SPE Speech Enhancement Control.................................................................. 204

6.2.77 AT+CCONCINDEX Report Concatenated SMS Index..........................................205

6.2.78 AT+SDMODE SD Mode Switch Function .............................................................205

6.2.79 AT+SRSPT Control SMS Retransmission..............................................................206

7 AT Commands for GPRS Support ......................................................208

7.1 Overview of AT Commands for GPRS Support............................................... 208

7.2 Detailed Descriptions of AT Commands for GPRS Support............................ 208

7.2.1 AT+CGATT Attach or Detach from GPRS Service ..................................................208

7.2.2 AT+CGDCONT Define PDP Context ....................................................................... 209

7.2.3 AT+CGQMIN Quality of Service Profile (Minimum Acceptable) ...........................210

7.2.4 AT+CGQREQ Quality of Service Profile (Requested) ............................................. 211

7.2.5 AT+CGACT PDP Context Activate or Deactivate ....................................................213

7.2.6 AT+CGDATA Enter Data State................................................................................. 214

7.2.7 AT+CGPADDR Show PDP Address.........................................................................214

7.2.8 AT+CGCLASS GPRS Mobile Station Class.............................................................215

7.2.9 AT+CGEREP Control Unsolicited GPRS Event Reporting......................................216

7.2.10 AT+CGREG Network Registration Status ..............................................................217

7.2.11 AT+CGSMS Select Service for MO SMS Messages ..............................................218

8 AT Commands for TCPIP Application Toolkit ..................................220

8.1 Overview ..........................................................................................................220

8.2 Detailed Descriptions of Commands................................................................221

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8.2.1 AT+CIPMUX Start Up Multi-IP Connection ............................................................221

8.2.2 AT+CIPSTART Start Up TCP or UDP Connection................................................... 221

8.2.3 AT+CIPSEND Send Data Through TCP or UDP Connection...................................223

8.2.4 AT+CIPQSEND Select Data Transmitting Mode .....................................................225

8.2.5 AT+CIPACK Query Previous Connection Data Transmitting State..........................226

8.2.6 AT+CIPCLOSE Close TCP or UDP Connection .....................................................227

8.2.7 AT+CIPSHUT Deactivate GPRS PDP Context ........................................................227

8.2.8 AT+CLPORT Set Local Port.....................................................................................228

8.2.9 AT+CSTT Start Task and Set APN, USER NAME, PASSWORD...........................229

8.2.10 AT+CIICR Bring Up Wireless Connection with GPRS or CSD .............................230

8.2.11 AT+CIFSR Get Local IP Address............................................................................230

8.2.12 AT+CIPSTATUS Query Current Connection Status ............................................... 231

8.2.13 AT+CDNSCFG Configure Domain Name Server...................................................232

8.2.14 AT+CDNSGIP Query the IP Address of Given Domain Name...............................233

8.2.15 AT+CIPHEAD Add an IP Head at the Beginning of a Package Received.............. 234

8.2.16 AT+CIPATS Set Auto Sending Timer .....................................................................234

8.2.17 AT+CIPSPRT Set Prompt of ‘>’ When Module Sends Data ................................... 235

8.2.18 AT+CIPSERVER Configure Module as Server ......................................................236

8.2.19 AT+CIPCSGP Set CSD or GPRS for Connection Mode ........................................237

8.2.20 AT+CIPSRIP Show Remote IP Address and Port When Received Data................238

8.2.21 AT+CIPDPDP Set Whether to Check State of GPRS Network Timing..................239

8.2.22 AT+CIPMODE Select TCPIP Application Mode....................................................239

8.2.23 AT+CIPCCFG Configure Transparent Transfer Mode............................................240

8.2.24 AT+CIPSHOWTP Display Transfer Protocol in IP Head When Received Data.....241

8.2.25 AT+CIPUDPMODE UDP Extended Mode.............................................................242

8.2.26 AT+CIPRXGET Get Data from Network Manually ...............................................243

8.2.27 AT+CIPSCONT Save TCPIP Application Context .................................................245

8.2.28 AT+CIPRDTIMER Set Remote Delay Timer ........................................................246

8.2.29 AT+CIPSGTXT Select GPRS PDP context ...........................................................247

8.2.30 AT+CIPTKA Set TCP Keepalive Parameters......................................................... 248

9 AT Commands for IP Application.......................................................249

9.1 Overview ..........................................................................................................249

9.2 Detailed Descriptions of Commands................................................................249

9.2.1 AT+SAPBR Bearer Settings for Applications Based on IP.......................................249

10 AT Commands for PING Support .....................................................251

10.1 Overview ........................................................................................................251

10.2 Detailed Descriptions of Commands..............................................................251

10.2.1 AT+CIPPING PING Request ..................................................................................251

10.2.2 AT+CIPCTL Set the Mode When Receiving an IP Packet .....................................252

10.2.3 AT+CIPFLT Set the Rules of IP Filter ....................................................................253

10.2.4 AT+CIPBEIPING Set the Module to be PING or Not ............................................254

11 AT Commands for HTTP Application ..............................................256

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11.1 Overview ........................................................................................................256

11.2 Detailed Descriptions of Commands..............................................................256

11.2.1 AT+HTTPINIT Initialize HTTP Service ................................................................. 256

11.2.2 AT+HTTPTERM Terminate HTTP Service............................................................ 257

11.2.3 AT+HTTPPARA Set HTTP Parameters Value ........................................................257

11.2.4 AT+HTTPDATA Input HTTP Data ......................................................................... 259

11.2.5 AT+HTTPACTION HTTP Method Action .............................................................259

11.2.6 AT+HTTPREAD Read the HTTP Server Response................................................261

11.2.7 AT+HTTPSCONT Save HTTP Application Context ..............................................262

11.2.8 AT+HTTPSTATUS Read HTTP Status...................................................................263

11.2.9 AT+HTTPHEAD Read the HTTP Header Information of Server Response...........264

12 AT Commands for FTP Application .................................................265

12.1 Overview ........................................................................................................265

12.2 Detailed Descriptions of Commands..............................................................266

12.2.1 AT+FTPPORT Set FTP Control Port ......................................................................266

12.2.2 AT+FTPMODE Set Active or Passive FTP Mode ..................................................266

12.2.3 AT+FTPTYPE Set the Type of Data to Be Transferred...........................................267

12.2.4 AT+FTPPUTOPT Set FTP Put Type .......................................................................268

12.2.5 AT+FTPCID Set FTP Bearer Profile Identifier .......................................................268

12.2.6 AT+FTPREST Set Resume Broken Download .......................................................269

12.2.7 AT+FTPSERV Set FTP Server Address ..................................................................269

12.2.8 AT+FTPUN Set FTP User Name ............................................................................270

12.2.9 AT+FTPPW Set FTP Password ............................................................................... 271

12.2.10 AT+FTPGETNAME Set Download File Name....................................................272

12.2.11 AT+FTPGETPATH Set Download File Path......................................................... 272

12.2.12 AT+FTPPUTNAME Set Upload File Name .........................................................273

12.2.13 AT+FTPPUTPATH Set Upload File Path .............................................................. 273

12.2.14 AT+FTPGET Download File ................................................................................ 274

12.2.15 AT+FTPPUT Set Upload File ............................................................................... 275

12.2.16 AT+FTPSCONT Save FTP Application Context ..................................................276

12.2.17 AT+FTPDELE Delete Specified File in FTP Server.............................................277

12.2.18 AT+FTPSIZE Get the Size of Specified File in FTP Server .................................278

12.2.19 AT+FTPSTATE Get the FTP State........................................................................279

12.2.20 AT+FTPEXTPUT Extend Upload File.....................................................................279

12.2.21 AT+FTPMKD Make Directory on the Remote Machine ......................................280

12.2.22 AT+FTPRMD Remove Directory on the Remote Machine ..................................281

12.2.23 AT+FTPLIST List Contents of Directory on the Remote Machine....................... 281

12.2.24 AT+FTPGETTOFS Download File and Save in File System ...............................282

12.2.25 AT+FTPPUTFRMFS Upload File from File System. ...........................................283

12.2.26 AT+FTPEXTGET Extend Download File ............................................................ 285

12.2.27 AT+FTPFILEPUT Load File in RAM from File System then Upolad with

FTPPUT ................................................................................................................................286

12.2.28 AT+FTPQUIT Quit Current FTP Session .............................................................287

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13 AT Commands for GSM Location Application ................................288

13.1 Overview ........................................................................................................288

13.2 Detailed Descriptions of Commands..............................................................288

13.2.1 AT+CIPGSMLOC GSM Location and Time ............................................................288

14 AT Commands for Email Application...............................................290

14.1 Overview ........................................................................................................290

14.2 Detailed Descriptions of Commands..............................................................291

14.2.1 AT+EMAILCID Set Email Bearer Profile Identifier..............................................291

14.2.2 AT+EMAILTO Set Timeout Value of SMTP/POP3 Server Response ..................291

14.2.3 AT+SMTPSRV Set SMTP Server Address and Port..............................................292

14.2.4 AT+SMTPAUTH Set User Name and Password for SMTP Authentication.......... 293

14.2.5 AT+SMTPFROM Set Sender Address and Name ..................................................294

14.2.6 AT+SMTPRCPT Set the Email Recipient(TO/CC/BCC) Address and Name........295

14.2.7 AT+SMTPSUB Set the Email Subject....................................................................296

14.2.8 AT+SMTPBODY Set the Email Body ...................................................................296

14.2.9 AT+SMTPFILE Set the Email Attachment ............................................................297

14.2.10 AT+SMTPSEND Send the Email .........................................................................298

14.2.11 AT+SMTPFT Transfer the Email Attachment ...................................................... 299

14.2.12 AT+SMTPCS Set the Email Charset .................................................................... 300

14.2.13 AT+POP3SRV Set POP3 Server and Account .....................................................301

14.2.14 AT+POP3IN Log in POP3 Server ........................................................................302

14.2.15 AT+POP3NUM Get Email Number and Total Size..............................................302

14.2.16 AT+POP3LIST Get the Specific Email Size ........................................................303

14.2.17 AT+POP3UIDL Get the Specific Email Unique-id..............................................304

14.2.18 AT+POP3CMD Get Multi-line Response.............................................................305

14.2.19 AT+POP3READ Read Multi-line Response ........................................................307

14.2.20 AT+POP3DEL Mark the Specific Email to Delete...............................................308

14.2.21 AT+POP3RSET Unmark the Emails that Be Marked as Deleted......................... 309

14.2.22 AT+POP3OUT Log Out POP3 Server..................................................................310

15 AT Commands for MMS Application...............................................311

15.1 Overview ........................................................................................................ 311

15.2 Detailed Descriptions of Commands..............................................................312

15.2.1 AT+CMMSCURL Set the URL of the MMS Center..............................................312

15.2.2 AT+CMMSPROTO Set the Protocol Parameter and MMS Proxy.........................312

15.2.3 AT+CMMSCID Set the Network Parameters for MMS.........................................313

15.2.4 AT+CMMSSENDCFG Set the Parameters for Sending MMS ..............................314

15.2.5 AT+CMMSEDIT Enter or Exit Edit Mode.............................................................315

15.2.6 AT+CMMSDOWN Download the File Data or Title from UART.........................316

15.2.7 AT+CMMSDELFILE Delete the File of the Edited MMS by File Index...............317

15.2.8 AT+CMMSSEND Start MMS Sending..................................................................318

15.2.9 AT+CMMSRECP Add Recipients..........................................................................319

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15.2.10 AT+CMMSCC Add Copy Recipients...................................................................319

15.2.11 AT+CMMSBCC Add Secret Recipients...............................................................320

15.2.12 AT+CMMSDELRECP Delete Recipients ............................................................321

15.2.13 AT+CMMSDELCC Delete Copy Recipients .......................................................321

15.2.14 AT+CMMSDELBCC Delete Secret Recipients ...................................................322

15.2.15 AT+CMMSRECV Receive MMS ........................................................................323

15.2.16 AT+CMMSVIEW Get the MMS into Buffer and Show the Information............. 324

15.2.17 AT+CMMSREAD Read the Given File of the MMS in the Buffer......................325

15.2.18 AT+CMMSRDPUSH Read the Information of the MMS PUSH Message..........325

15.2.19 AT+CMMSUA Set User Agent ............................................................................327

15.2.20 AT+CMMSPROFILE Set User Agent Profile ......................................................328

15.2.21 AT+CMMSTIMEOUT Set MMS Timeout...........................................................328

15.2.22 AT+CMMSSTATUS Get MMS Status ................................................................329

15.2.23 AT+CMMSINIT Initialize MMS Function...........................................................330

15.2.24 AT+CMMSTERM Exit MMS Function ...............................................................330

15.2.25 AT+CMMSSCONT Save MMS Context..............................................................331

16 AT Commands for DDET Application..............................................333

16.1 Overview ........................................................................................................333

16.2 Detailed Descriptions of Commands..............................................................333

16.2.1 AT+DDET DTMF Detection Control.....................................................................333

17 AT Commands for RECORD Application ........................................335

17.1 Overview ........................................................................................................335

17.2 Detailed Descriptions of Commands..............................................................335

17.2.1 AT+CREC Record Operation..................................................................................335

17.2.2 AT+CRECORD Record and Send Data to UART...................................................338

18 AT Commands for TTS Application .................................................340

18.1 Overview ........................................................................................................340

18.2 Detailed Descriptions of Commands..............................................................340

18.2.1 AT+CTTS TTS Operation....................................................................................... 340

18.2.2 AT+CTTSPARAM Set Parameters of the TTS Playing..........................................341

18.2.3 AT+CTTSRING Enable/Disable TTS Play During Incoming Call Ring................342

19 Supported Unsolicited Result Codes .................................................343

19.1 Summary of CME ERROR Codes .................................................................343

19.2 Summary of CMS ERROR Codes .................................................................346

19.3 Summary of Unsolicited Result Codes ..........................................................350

20 AT Commands Examples ..................................................................355

20.1 Profile Commands.......................................................................................... 355

20.2 SIM Commands.............................................................................................. 356

20.3 General Commands ........................................................................................358

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20.4 Call Control Commands................................................................................. 359

20.5 SIM Toolkit Commands ................................................................................. 361

20.6 Audio Commands ...........................................................................................361

20.7 SMS Commands.............................................................................................361

20.8 GPRS Commands...........................................................................................362

20.9 TCPIP Commands ..........................................................................................364

20.10 IP Commands ...............................................................................................365

20.11 PING Commands..........................................................................................365

20.12 HTTP and FTP Commands ..........................................................................366

20.13 GSM Location Commands ...........................................................................366

20.14 EMAIL Commands ......................................................................................367

20.15 MMS Commands .........................................................................................367

20.16 DDET Commands ........................................................................................368

20.17 RECORD Commands...................................................................................370

20.18 TTS Commands............................................................................................ 371

21 ATC Differences among SIM800 Series...........................................373

21.1 AT+SIDET ......................................................................................................373

21.2 AT+CMIC .......................................................................................................373

21.3 AT+CBAND ...................................................................................................374

21.4 AT+CHFA.......................................................................................................374

21.5 AT+SGPIO......................................................................................................375

21.6 AT+SJDR ........................................................................................................375

21.7 AT+CREC....................................................................................................... 376

21.8 AT+CTTSPARAM .........................................................................................376

21.9 AT+CADC ......................................................................................................376

21.10 AT+CSCLK .................................................................................................. 376

21.11 AT+CMMSDOWN....................................................................................... 377

21.12 AT+CFGRI ...................................................................................................377

21.13 Only Part of Projects Support Following AT Commands ............................378

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Version History

Version Date Chapter What is new

V1.00 New version

V1.01 2013-07-23

All Modify GSM 07.05 to 3GPP TS 27.005,modify

GSM 07.07 to 3GPP TS 27.007

1.1 Scope of the document Add SIM800

2.2.8 ATH Delete ATH parameter [n]

2.2.12 +++ Change "0.5 second" to "1 second"

2.2.13 ATO Change "NO CARRIER" to "ERROR"

2.2.26 ATX Change default value from 0 to 4

2.2.32 AT&W Add AT+CFGRI,AT+CSGS

2.2.41.1 Auto-bauding Disable DTR auto-bauding

3.2.14 AT+CHLD Delete parameter of CHLD

3.2.18 AT+CLIP Change URC parameter

3.2.51 AT+CRSL Delete reference Note

3.2.7 AT+CEER Change description of 34 (emergency call not

possible)

4.2.10 AT+CRES Delete description of CSCB

4.2.11 AT+CSAS Delete description of CSCB

6.2.4 AT+CMIC Add reference Note

6.2.11 AT+CFGRI Add default value

6.2.16 AT+CCVM Modify Test Command response information

and parameter description

6.2.18 AT+CHF Add URC

6.2.26 AT+STTONE Change <duration> supported range;delete

reference note

6.2.27 AT+SIMTONE Modify last parameter of Test Command to

10-500000

6.2.48 AT+SLEDS Modify default value

6.2.55 AT+CSGS Add ATC

6.2.56 AT+CMICBIAS Add ATC

8.2.2 AT+CIPSTART Modify parameter

8.2.15 AT+CIPHEAD Modify parameter

8.2.20 AT+CIPSRIP Modify parameter

8.2.23 AT+CIPCCFG Modify write cmd parameters

8.2.26 AT+CIPRXGET Add "single IP & multi IP connection"

information

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9.2.1 AT+SAPBR Modify parameter

12.2.23 AT+FTPLIST Change "Execution Command" to "Write

Command"

14.2.8 AT+SMTPBODY Change "Execution Command" to "Write

Command"

14.2.10 AT+SMTPSEND Modify parameter

14.2.11 AT+SMTPFT Change "Execution Command" to "Write

Command"

15.2.15 AT+CMMSRECV Change reference note

15.2.21

Change "milliseconds" to "seconds"

AT+CMMSTIMEOUT

15.2.25 AT+CMMSSCONT Modify parameter of Execution Command

17.2.1 AT+CREC Add note

18.2.2 AT+CTTSPARAM Modify parameter;add note

20.8 GPRS Commands Modify the CGQREQ example

20.17 RECORD Commands Add example

3.2.17 AT+CLCK Add Max Response Time

3.2.22 AT+COPS Add Max Response Time

3.2.29 AT+CPWD Add Max Response Time

3.2.28 AT+CPIN Add Max Response Time

3.2.41 AT+VTS Add Max Response Time

3.2.44 AT+CPOL Add Max Response Time

3.2.45 AT+COPN Add Max Response Time

3.2.54 AT+CPUC Add Max Response Time

6.2.7 AT+CADC Add Max Response Time

6.2.23 AT+CCID Add Max Response Time

7.2.1 AT+CGATT Add Max Response Time

7.2.5 AT+CGACT Add Max Response Time

3.2.24 AT+CPBF Modify description of max response time

3.2.25 AT+CPBR Modify description of max response time

4.2.1 CMGD Modify description of max response time

4.2.3 CMGL Modify description of max response time

6.2.25 CMGDA Modify description of max response time

15.2.8 AT+CMMSSEND Modify description of max response time

15.2.15 AT+CMMSRECV Modify description of max response time

2.2.16 ATS0 Add parameter saving mode

2.2.20 ATS6 Add parameter saving mode

2.2.21 ATS7 Add parameter saving mode

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2.2.22 ATS8 Add parameter saving mode

2.2.26 ATX Add parameter saving mode

3.2.4 AT+CBST Add parameter saving mode

3.2.16 AT+CLCC Add parameter saving mode

3.2.12 AT+CSCS Add parameter saving mode

3.2.51 AT+CRSL Add parameter saving mode

3.2.52 AT+CLVL Add parameter saving mode

6.2.33 AT+CIURC Add parameter saving mode

6.2.53 AT_CSDT Add parameter saving mode

6.2.54 AT+CSMINS Add parameter saving mode

3.2.32 AT+CREG Modify parameter save mode

6.2.44 AT+SVR Modify parameter save mode

7.2.10 AT+CGREG Modify parameter save mode

3.2.24 AT+CPBS Delete parameter save mode

3.2.25 AT+CPBW Delete parameter save mode

V1.02 2013-10-23

2.2.28 AT&C Modify the format

3.2.5 AT+CCFC Change error word: <reads> to <reason>

3.2.33 AT+CRLP Add Save mode and reference

3.2.36 AT+FCLASS Modify information about +FCLASS

3.2.47 AT+CCLK Add note

4.2.5 AT+CMGS Add Note

6.2.18 AT+CHF Modify parameter range and note

6.2.19 AT+CHFA

Add patameters of write command and test command,modify note

6.2.20 AT+CSCLK Add new parameter and note

6.2.24 AT+CMTE Increase the temperature range

6.2.28 AT+CCPD Set default value

6.2.33 AT+CIURC Set default value

6.2.41 AT+SPWM Modify parameter direction and note

6.2.51 AT+CNETLIGHT Add test and read command

6.2.53 AT+CSDT Modify note

6.2.55 AT+CSGS Modify parameter default value

6.2.56 AT+CMICBIAS

Add default value and modify parameter

description

6.2.57 AT+DTAM Add AT command

6.2.58 AT+SJDR Add AT command

6.2.59 AT+CPCMCFG Add AT command

6.2.60 AT+CPCMSYNC Add AT command

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6.2.61 AT+CANT Add AT command

6.2.62 AT+CAGCSET Add AT command

7.2.9 AT+CGEREP

Modify parameter description and add URC

example

8.2.7 AT+CIPSHUT Add Max Response Time

8.2.10 AT+CIICR Add Max Response Time

8.2.21 AT+CIPDPDP Modify parameter’s scope

8.2.26 AT+CIPRXGET Modify parameter options

16.2.1 AT+DDET

Add parameter and URC description in write command,add note

17.2.1 AT+CREC Modify note

17.2.2 AT+CRECORD Add AT command

18.2.2 AT+CTTSPARAM Modify note and parameter default value

20.16 AT+DDET Modify AT+DDET example

21.5 AT+CTTSPARAM Add differences of some AT commands

21.6 AT+CHFA Add differences of some AT commands

AT+CEXTHS,AT+CEXBUT Delete

All

Add or modify Parameter Saving Mode and

Max Response Time

V1.03 2014-03-28

1.1 Scope of the document Add SIM800G

2.2.28 AT&C Modify parameter format

2.2.32 AT&W Modify parameter stored by &W

2.2.41 AT+IPR Add parameter description

3.2.6 AT+CCWA Modify <status> decription

3.2.24 AT+CPBS Add “FD” phonebook

3.2.46 AT+CALS

Add parameter <switch> for playing/stopping

tone

5.2.1 AT+STKTRS Modify the length of parameter

6.2.1 AT+SIDET Extend parameter <channel>

6.2.4 AT+CMIC

Extend parameter <channel>, add default value

description in note

6.2.5 AT+CALA Modify indicate expired alarm

Extend parameter <DTMF string> and add

6.2.13 AT+CLDTMF

parameter <timeBase>, add the funcion that

local DTMF tone can be played in call.

6.2.56 AT+CMICBIAS Add note description

6.2.58 AT+SJDR Modify format error

6.2.63 AT+SD2PCM Add AT command

6.2.64 AT+SKPD Add AT command

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6.2.65 AT+SIMTONEX Add AT command

6.2.66 AT+CROAMING Add AT command

6.2.67 AT+CNETSCAN Add AT command

8.2.23 AT+CIPCCFG Modify wait time’s interval

12.2.24 AT+FTPGETTOFS Add AT command

V1.04 2014-06-10

16.2.1 AT+DDET

Modify description about <key> parameter, add

<ssdet> parameter

Modify <location> and AT+CREC=8

17.2.1 AT+CREC

description,add read length limit and AMR

support description in note

18.2.3 AT+CTTSRING Add command AT+CTTSRING

20.6 Audio command Add AT+CLDTMF example

20.11 PING Commands Add other device ping to the modem

21.6 AT+CHFA Modify description

21.7 AT+CMIC Add difference desription

21.8 AT+SIDET Add difference desription

AT+FCLASS

AT+FMI

AT+FMM

Delete

AT+FMR

1.1 Scope of the document

Add SIM800W16, SIM840W16,

SIM800-WB64, SIM808

2.2.27 ATZ Modify note

2.2.30 AT&F Modify note

2.2.32 AT&W Modify note

3.2.46 AT+CALS Modify <switch> descripton

4.2.8 AT+CNMI Add the " [alpha>], " string

6.2.1 AT+SIDET Modify note

6.2.4 AT+CMIC Modify note

6.2.8 AT+CSNS Modify parameter save mode

6.2.13 AT+CLDTMF Modify note

6.2.17 AT+CBAND Modify note

6.2.18 AT+CHF Modify note

6.2.19 AT+CHFA Modify note

6.2.40 AT+SGPIO Modify note

6.2.41 AT+SPWM

Extend the scope of parameter <freq> to

"0-100000"

6.2.58 AT+SJDR Modify note

6.2.59 AT+CPCMCFG Modify note

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6.2.60 AT+CPCMSYNC Modify note

6.2.62 AT+CANT Modify note

6.2.63 AT+SD2PCM Modify note

6.2.64 AT+SKPD Modify note

6.2.66 AT+CROAMING Modify AT+CROAMING command’s format

6.2.67 AT+CNETSCAN

Modify AT+CNETSCAN command’s function

and note

6.2.68 AT+CMNRP Add AT command

8.2.2 AT+CIPSTART Modify max response time

8.2.30 AT+CIPTKA Add AT command

10.2.4 AT+CIPBEIPING Add AT command

12.2.2 AT+FTPMODE Modify test and write command

12.2.14 AT+FTPGET Modify note, Add "Manual quit" to <error>

12.2.23 AT+FTPLIST Modify note

12.2.24 AT+FTPGETTOFS Add read command

12.2.25

AT+FTPPUTFRMFS

Add AT command

12.2.26 AT+FTPEXTGET Add AT command

12.2.27 AT+FTPFILEPUT Add AT command

12.2.28 AT+FTPQUIT Add AT command

13.2.1 AT+CIPGSMLOC Modify max response time

16.2.1 AT+DDET Modify response value of test command

V1.05 2014-07-31

17.2.1 AT+CREC Modify parameter description and note

18 Modify note

19.3 URC

Add URC of

AT+CGREG,AT+CALA,AT+CIURC,AT+CNMI

20.2 SIM commands Modify response of AT+CPBS=?

21 Modify ATC difference

21.4 AT+CHFA

Add PCM channel in SIM800 and

SIM800-WB64

All Change SIM800-WB64 to SIM800M64

6.2.21 AT+CENG Add format description of part parameters

6.2.40 AT+SGPIO Extend the scope of parameter <GPIO> to "1-7"

6.2.69 AT+CEGPRS Add AT command

12.2.24 AT+FTPGETTOFS Modify description of <loc>

14.2.14 AT+POP3IN Add description of <code> value 69

14.2.22 AT+POP3OUT Add description of <code> value 69

21.2 AT+CMIC Modify

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21.5 AT+SGPIO Modify difference

21.9 AT+CADC Add difference

21.10 AT+CSCLK Add difference

21.13 Add GPIO difference

1.06 2014-10-28

1.07 2014-12-19

1.08 2015-05-12

6.2.52 AT+CWHITELIST Extend the scope of parameter <mode> to "0-3"

6.2.70 AT+CGPIO Add AT command

6.2.71 AT+CMEDPLAY Add AT command

6.2.72 AT+CMEDIAVOL Add AT command

8.2.14 AT+CDNSGIP Add error code

12.2 Modify max response time

17.2.1 AT+CREC Modify note

19.3 Modify note

1.1 Scope of the document Add SIM800C

2.2.16 ATS0 Modify note

6.2.20 AT+CSCLK Modify note

6.2.73 AT+SNDLEVEL Add AT command

21 Add differences of SIM800C

6.2.55 AT+CSGS Extend the scope of parameter <mode> to "0-2"

6.2.74 AT+ECHARGE Add AT command

6.2.75 AT+SIMTIMER Add AT command

1.09 2015-08-03

6.2.76 AT+SPE Add AT command

17.2.1 AT+CREC Modify note

19.1

Change CME error codes from 810~824 to

600~614

21.13 Add AT+ECHARGE,AT+SIMTIMER,AT+SPE

1.1 Scope of the document Add SIM800A, SIM800F, SIM800C-DS

6.2.21 AT+CENG

Extend the scope of parameter <mode> to "0-4"

and modify note

6.2.65 AT+SIMTONEX Modify note

6.2.70 AT+CGPIO Modify response value of test command

6.2.71 AT+CMEDPLAY Modify note

6.2.77 AT+CCONCINDEX Add AT command

6.2.78 AT+SDMODE Add AT command

6.2.79 AT+SRSPT Add AT command

11.2.9 AT+HTTPHEAD Add AT command

15.2.6 AT+CMMSDOWN Modify <type> parameter

17.2.1 AT+CREC Modify note

19.3 Delete URC of "AT+CENG" when <mode>=3

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20.2 SIM commands Add examples of "AT+CENG"

21.11 AT+CMMSDOWN Add difference of "AT+CMMSDOWN"

21.12 AT+CFGRI Add difference of "AT+CFGRI"

21

Add differences of SIM800A,SIM800F and

SIM800C-DS

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1 Introduction

1.1 Scope of the document

This document presents the AT Command Set for SIMCom SIM800 Series, including SIM800V,

SIM840V, SIM800W, SIM840W, SIM800W16, SIM840W16, SIM800L, SIM800H, SIM800,

SIM800M64, SIM800G, SIM808, SIM800C, SIM800A, SIM800F and SIM800C-DS.

1.2 Related documents

You can visit the SIMCom Website using the following link:

http://www.sim.com

1.3 Conventions and abbreviations

In this document, the GSM engines are referred to as following term:

ME (Mobile Equipment);

MS (Mobile Station);

TA (Terminal Adapter);

DCE (Data Communication Equipment) or facsimile DCE (FAX modem, FAX board);

In application, controlling device controls the GSM engine by sending AT Command via its

serial interface. The controlling device at the other end of the serial line is referred to as

following term:

TE (Terminal Equipment);

DTE (Data Terminal Equipment) or plainly "the application" which is running on an embedded

system;

1.4 A T Command syntax

The "AT" or "at" or “aT” or “At”prefix must be set at the beginning of each Command line. To

terminate a Command line enter <CR>.

Commands are usually followed by a response that includes.

"<CR><LF><response><CR><LF>"

Throughout this document, only the responses are presented, <CR><LF> are omitted

intentionally.

The AT Command set implemented by SIM800 Series is a combination of 3GPP TS 27.005,

3GPP TS 27.007 and ITU-T recommendation V.25ter and the AT commands developed by

SIMCom.

Note: A HEX string such as "00 49 49 49 49 FF FF FF FF" will be sent out through serial port at the baud rate of 115200 immediately after SIM800 Series is powered on. The string

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shall be ignored since it is used for synchronization with PC tool. Only enter AT Command through serial port after SIM800 Series is powered on and Unsolicited Result Code "RDY" is received from serial port. If auto-bauding is enabled, the Unsolicited Result Codes "RDY" and so on are not indicated when you start up the ME, and the "AT" prefix, or "at" prefix must be set at the beginning of each command line.

All these AT commands can be split into three categories syntactically: "basic", "S parameter", and "extended". These are as follows:

1.4.1 Basic syntax

These AT commands have the format of "AT<x><n>", or "AT&<x><n>", where "<x>"is the Command, and "<n>"is/are the argument(s) for that Command. An example of this is "ATE<n>",

which tells the DCE whether received characters should be echoed back to the DTE according to

the value of "<n>". "<n>" is optional and a default will be used if missing.

1.4.2 S Parameter syntax

These AT commands have the format of "ATS<n>=<m>", where "<n>" is the index of the S register to set, and "<m>"is the value to assign to it. "<m>" is optional; if it is missing, then a

default value is assigned.

1.4.3 Extended Syntax

These commands can operate in several modes, as in the following table:

Table 1: Types of AT commands and responses

Test Command AT + <x>=? The mobile equipment returns the list of parameters

and value ranges set with the corresponding Write

Command or by internal processes.

Read Command AT + <x>? This command returns the currently set value of the

parameter or parameters.

Write Command AT+<x>=<…> This command sets the user-definable parameter

values.

Execution Command AT+<x> The execution command reads non-variable

parameters affected by internal processes in the GSM

engine.

1.4.4 Combining AT commands on the same Command line

You can enter several AT commands on the same line. In this case, you do not need to type the

"AT" or "at" prefix before every command. Instead, you only need type "AT" or "at" the

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beginning of the command line. Please note to use a semicolon as the command delimiter after

an extended command; in basic syntax or S parameter syntax, the semicolon need not enter, for

example: ATE1Q0S0=1S3=13V1X4;+IFC=0,0;+IPR=115200;&W.

The Command line buffer can accept a maximum of 556 characters (counted from the first

command without “AT” or “at” prefix). If the characters entered exceeded this number then none

of the Command will executed and TA will return "ERROR".

1.4.5 Entering successive AT commands on separate lines

When you need to enter a series of AT commands on separate lines, please Note that you need to

wait the final response (for example OK, CME error, CMS error) of last AT Command you

entered before you enter the next AT Command.

1.5 Supported character sets

The SIM800 Series AT Command interface defaults to the IRA character set. The SIM800 Series

supports the following character sets:

GSM format

UCS2

HEX

IRA

PCCP

PCDN

8859-1

The character set can be set and interrogated using the "AT+CSCS" Command (3GPP TS

27.007). The character set is defined in GSM specification 3GPP TS 27.005.

The character set affects transmission and reception of SMS and SMS Cell Broadcast messages,

the entry and display of phone book entries text field and SIM Application Toolkit alpha strings.

1.6 Flow control

Flow control is very important for correct communication between the GSM engine and DTE.

For in the case such as a data or fax call, the sending device is transferring data faster than the

receiving side is ready to accept. When the receiving buffer reaches its capacity, the receiving

device should be capable to cause the sending device to pause until it catches up.

There are basically two approaches to achieve data flow control: software flow control and

hardware flow control. SIM800 Series support both two kinds of flow control.

In Multiplex mode, it is recommended to use the hardware flow control.

1.6.1 Software flow control (XON/XOFF flow control)

Software flow control sends different characters to stop (XOFF, decimal 19) and resume (XON,

decimal 17) data flow. It is quite useful in some applications that only use three wires on the

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serial interface.

The default flow control approach of SIM800 Series is hardware flow control (RTS/CTS flow

control), to enable software flow control in the DTE interface and within GSM engine, type the

following AT Command:

AT+IFC=1, 1

This setting is stored volatile, for use after restart, AT+IFC=1, 1 should be stored to the user profile with AT&W.

NOTE: The AT commands listed in the table of AT&W chapter should be stored to user profile with AT&W for use after restart. Most other AT commands in V.25, 3GPP TS 27.005, 3GPP TS

27.007,GPRS will store parameters automatically and can be used after module restart.

Ensure that any communications software package (e.g. Hyper terminal) uses software flow

control.

NOTE:

Software Flow control should not be used for data calls where binary data will be transmitted or

received (e.g. TCP/IP) as the DTE interface may interpret binary data as flow control characters.

1.6.2 Hardware flow control (RTS/CTS flow control)

Hardware flow control achieves the data flow control by controlling the RTS/CTS line. When the

data transfer should be suspended, the CTS line is set inactive until the transfer from the

receiving buffer has completed. When the receiving buffer is ok to receive more data, CTS goes

active once again.

To achieve hardware flow control, ensure that the RTS/CTS lines are present on your application

platform.

1.7 Definitions

1.7.1 Parameter Saving Mode

For the purposes of the present document, the following syntactical definitions apply:

 NO_SAVE: The parameter of the current AT command will be lost if module is rebooted or

current AT command doesn't have parameter.

 AUTO_SAVE: The parameter of the current AT command will be kept in NVRAM

automatically, and it won't be lost if module is rebooted.

 AT&W_SA VE: The parameter of the current AT command will be kept in NVRAM by

sending the command of “AT&W.”

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1.7.2 Max Response Time

Max response time is estimated maximum time to get response, the unit is seconds.

"-" means this AT command doesn’t care the response time.

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2 AT Commands According to V.25TER

These AT Commands are designed according to the ITU-T (International Telecommunication

Union, Telecommunication sector) V.25ter document.

2.1 Overview of AT Commands According to V.25TER

Command Description

A/

ATA Answer an incoming call

AT D Mobile originated call to dial a number

ATD><N> Originate call to phone number in current memory

ATD><STR> Originate call to phone number in memory which corresponds to field

AT D L Redial last telephone number used

ATE Set command echo mode

Re-issues the last command given

<str>

AT H Disconnect existing connection

AT I Display product identification information

ATL Set monitor speaker loudness

AT M Set monitor speaker mode

+++ Switch from data mode or ppp online mode to command mode

AT O Switch from command mode to data mode

AT P Select pulse dialling

AT Q Set result code presentation mode

AT S 0 Set number of rings before automatically answering the call

AT S 3 Set command line termination character

AT S 4 Set response formatting character

AT S 5 Set command line editing character

AT S 6 Pause before blind dialling

AT S 7 Set number of seconds to wait for connection completion

AT S 8 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

ATT Select tone dialing

AT V TA response format

AT X 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

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AT & F Factory defined configuration

AT & V Display current configuration

AT & W Store active profile

AT + GC A P Request complete TA capabilities list

AT + GM I Request manufacturer identification

AT+GMM Request TA model identification

AT + GM R Request TA revision identification of software release

AT+GOI Request global object identification

AT + GS N Request TA serial number identification (IMEI)

AT + IC F Set TE-TA control character framing

AT + IF C Set TE-TA local data flow control

AT + IP R Set TE-TA fixed local rate

AT+HVOIC Disconnect voice call only

2.2 Detailed Description of AT Commands According to V .25TER

2.2.1 A/ Re-issues the Last Command Given A/ Re-issues the Last Command Given

Execution

Command

A/

Reference

V.25ter

Response

Re-issues the previous Command

Note

2.2.2 ATA Answer an Incoming Call ATA Answer an Incoming Call

Execution

Command

ATA

Response

TA sends off-hook to the remote station.

Note1: Any additional commands on the same Command line are ignored.

Note2: This Command may be aborted generally by receiving a character

during execution. The aborting is not possible during some states of

connection establishment such as handshaking.

Response in case of data call, if successfully connected

CONNECT<text> TA switches to data mode. Note: <text> output only if ATX<value> parameter setting with the <value>>0

When TA returns to Command mode after call release

OK

Response in case of voice call, if successfully connected

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OK

Response if no connection

NO CARRIER

Parameter Saving

NO_SAVE

Mode

Max Response

Time

Reference

V.25ter

20s(voice call)

Timeout set with ATS7 (data call)

Note

See also ATX

2.2.3 ATD Mobile Originated Call to Dial A Number ATD Mobile Originated Call to Dial A Number

Execution

Command

ATD<n>[<mgsm ][;]

Response

This Command can be used to set up outgoing voice, data or fax calls. It also serves to control supplementary services. Note: This Command may be aborted generally by receiving an ATH

Command or a character during execution. The aborting is not possible

during some states of connection establishment such as handshaking.

If error is related to ME functionality

+CME ERROR: <err>

If no dial tone and (parameter setting ATX2 or ATX4) NO DIALTONE

If busy and (parameter setting ATX3 or ATX4) BUSY

If a connection cannot be established

NO CARRIER

If the remote station does not answer

NO ANSWER

If connection successful and non-voice call.

CONNECT<text> TA switches to data mode. Note: <text> output only if ATX<value> parameter setting with the <value> >0

When TA returns to Command mode after call release

OK

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If connection successful and voice call

OK

Parameters

<n> String of dialing digits and optionally V.25ter modifiers dialing digits: 0-9, * , #, +, A, B, C

Following V.25ter modifiers are ignored:

,(comma), T, P, !, W, @

Emergency call: <n> Standardized emergency number 112 (no SIM needed) <mgsm> String of GSM modifiers:

I Actives CLIR (Disables presentation of own number to

called party)

i Deactivates CLIR (Enable presentation of own number

to called party)

G Activates Closed User Group invocation for this call

only

g Deactivates Closed User Group invocation for this call

only

<;> Only required to set up voice call , return to Command state

Parameter Saving

NO_SAVE

Mode

Max Response

Time

Reference

V.25ter

20s(voice call)

Timeout set with ATS7 (data call)

Note

Parameter "I" and "i" only if no *# code is within the dial string

<n> is default for last number that can be dialed by ATDL *# codes sent with ATD are treated as voice calls. Therefore, the Command

must be terminated with a semicolon ";"

See ATX Command for setting result code and call monitoring parameters.

Responses returned after dialing with ATD For voice call two different responses mode can be determined. TA returns "OK" immediately either after dialing was completed or after the call is established. The setting is controlled by AT+COLP. Factory default is AT+COLP=0, this cause the TA returns "OK" immediately after dialing was completed, otherwise TA will returns "OK", "BUSY", "NO DIAL TONE", "NO CARRIER".

Using ATD during an active voice call:

When a user originates a second voice call while there is already an active

voice call, the first call will be automatically put on hold.

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The current states of all calls can be easily checked at any time by using the

AT+CLCC Command.

2.2.4 ATD><n> Originate Call to Phone Number in Current Memory ATD><n> Originate Call to Phone Number in Current Memory

Execution

Command

ATD><n>[<clir> ][<cug>][;]

Response

This Command can be used to dial a phone number from current phonebook

memory.

Note: This Command may be aborted generally by receiving an ATH

Command or a character during execution. The aborting is not possible

during some states of connection establishment such as handshaking.

If error is related to ME functionality

+CME ERROR: <err>

If no dial tone and (parameter setting ATX2 or ATX4) NO DIALTONE

If busy and (parameter setting ATX3 or ATX4) BUSY

If a connection cannot be established

NO CARRIER

If the remote station does not answer

NO ANSWER

If connection successful and non-voice call.

CONNECT<text> TA switches to data mode. Note: <text> output only if ATX<value> parameter setting with the <value> >0

When TA returns to Command mode after call release OK

If successfully connected and voice call

OK

Parameters

<n> Integer type memory location should be in the range of locations

available in the memory used

<mgsm> String of GSM modifiers:

<clir>

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I Override the CLIR supplementary service subscription

default value for this call

Invocation (restrict CLI presentation)

i Override the CLIR supplementary service subscription

default value for this call

Suppression (allow CLI presentation)

<cug>

G Control the CUG supplementary service information

for this call

CUG Not supported

g Control the CUG supplementary service information

for this call

CUG Not supported

<;> Only required to set up voice call , return to

Command state

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

Parameter "I" and "i" only if no *# code is within the dial string

*# codes sent with ATD are treated as voice calls. Therefore, the Command

must be terminated with a semicolon ";"

See ATX Command for setting result code and call monitoring parameters.

2.2.5 ATD><str> Originate Call to Phone Number in Memory Which Corresponds to

Field <str>

ATD><str> Originate Call to Phone Number in Memory Which Corresponds to Field <str>

Execution

Command

ATD><str>[<clir >][<cug>][;]

Response

This Command make the TA attempts to set up an outgoing call to stored

number.

All available memories are searched for the entry <str>. Note: This Command may be aborted generally by receiving an ATH

Command or a character during execution. The aborting is not possible

during some states of connection establishment such as handshaking.

If error is related to ME functionality

+CME ERROR: <err>

If no dial tone and (parameter setting ATX2 or ATX4) NO DIALTONE

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If busy and (parameter setting ATX3 or ATX4) BUSY

If a connection cannot be established

NO CARRIER

If the remote station does not answer

NO ANSWER

If connection successful and non-voice call.

CONNECT<text> TA switches to data mode. Note: <text> output only if ATX<value> parameter setting with the <value> >0

When TA returns to Command mode after call release OK

If successfully connected and voice call

OK

Parameters

<str> String type (string should be included in quotation marks) value ("x"), which should equal to an alphanumeric field in at least one phone book entry in the searched memories. <str> formatted as current TE character set specified by +CSCS. <mgsm> String of GSM modifiers:

called party)

i Deactivates CLIR (Enable presentation of own number to

called party)

G Activates Closed User Group invocation for this call only g Deactivates Closed User Group invocation for this call only <;> Only required to set up voice call, return to Command state

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

Parameter "I" and "i" only if no "*#" code is within the dial string

*# codes sent with ATD are treated as voice calls. Therefore, the Command

must be terminated with a semicolon ";"

See ATX Command for setting result code and call monitoring parameters.

I Actives CLIR (Disables presentation of own number to

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2.2.6 ATDL Redial Last Telephone Number Used ATDL Redial Last Telephone Number Used

Execution

Command

ATDL

Response

This Command redials the last voice and data call number used.

Note: This Command may be aborted generally by receiving an ATH

Command or a character during execution. The aborting is not possible

during some states of connection establishment such as handshaking.

If error is related to ME functionality

+CME ERROR: <err>

If no dial tone and (parameter setting ATX2 or ATX4) NO DIALTONE

If busy and (parameter setting ATX3 or ATX4) BUSY

If a connection cannot be established

NO CARRIER

If the remote station does not answer

NO ANSWER

If connection successful and non-voice call.

CONNECT<text> TA switches to data mode. Note: <text> output only if ATX<value> parameter setting with the <value> >0

When TA returns to Command mode after call release OK

If successfully connected and voice call

OK

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

See ATX Command for setting result code and call monitoring parameters. Return the numbers and symbols which ATD supports if there is no last

dialing context.

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2.2.7 ATE Set Command Echo Mode ATE Set Command Echo Mode

Execution

Command

ATE<value>

Response

This setting determines whether or not the TA echoes characters received

from TE during Command state.

OK

Parameters

<value> 0 Echo mode off

1 Echo mode on

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.8 ATH Disconnect Existing Connection ATH Disconnect Existing Connection

Execution

Command

ATH

Response

Disconnect existing call by local TE from Command line and terminate call

OK

Note: OK is issued after circuit 109(DCD) is turned off, if it was previously

on.

Parameter Saving

NO_SAVE

Mode

Max Response

20s

Time

Reference

V.25ter

Note

2.2.9 ATI Display Product Identification Information ATI Display Product Identification Information

Execution

Command

ATI

Response

TA issues product information text

Example:

SIM800 R11.08

OK

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Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.10 A TL Set Monitor speaker loudness ATL Set Monitor speaker loudness

Execution

Command

ATL<value>

Response

OK

Parameters

<value> 0..9 Volume

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

No effect in GSM

2.2.11 ATM Set Monitor Speaker Mode ATM Set Monitor Speaker Mode

Execution

Command

ATM<value>

Response

OK

Parameters

<value> 0..9 Mode

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

No effect in GSM

2.2.12 +++ Switch from Data Mode or PPP Online Mode to Command Mode +++ Switch from Data Mode or PPP Online Mode to Command Mode

Execution

Command

+++

Response

The +++ character sequence causes the TA to cancel the data flow over the

AT interface and switch to Command mode. This allows you to enter AT

Command while maintaining the data connection to the remote server.

OK

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To prevent the +++ escape sequence from being misinterpreted as data, it

should comply to following sequence:

No characters entered for T1 time (1 second)

"+++" characters entered with no characters in between (1 second)

No characters entered for T1 timer (1 second)

Switch to Command mode, otherwise go to step 1.

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

To return from Command mode back to data mode: Enter ATO.

2.2.13 A TO Switch from Command Mode to Data Mode ATO Switch from Command Mode to Data Mode

Execution

Command

ATO[n]

Response

TA resumes the connection and switches back from Command mode to data

mode.

CONNECT

If connection is not successfully resumed

ERROR

else

TA returns to data mode from command mode CONNECT <text>

Note: <text> only if parameter setting ATX>0

Parameter

<n> 0 Switch from command mode to data mode.

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.14 ATP Select Pulse Dialling ATP Select Pulse Dialling

Execution

Command

ATP

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Response

OK

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Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

No effect in GSM

2.2.15 A TQ Set Result Code Presentation Mode ATQ Set Result Code Presentation Mode

Execution

Command

ATQ<n>

Response

This parameter setting determines whether or not the TA transmits any result

code to the TE. Information text transmitted in response is not affected by

this setting.

If <n>=0:

OK

If <n>=1:

(none)

Parameters

<n> 0 TA transmits result code

1 Result codes are suppressed and not transmitted

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.16 ATS0 Set Number of Rings before Automatically Answering the Call ATS0 Set Number of Rings before Automatically An swering the Call

Read Command

ATS0?

Response

<n>

OK

Parameters

See Write Command

Write Command

ATS0=<n>

Response

This parameter setting determines the number of rings before auto-answer.

OK

ERROR

Parameters

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<n> 0 Automatic answering is disable.

1-255 Number of rings the modem will wait for before answering

the phone if a ring is detected.

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

If <n> is set too high, the calling party may hang up before the call can be

answered automatically.

If using cmux port, ATH and AT+CHUP can hang up the call (automatically

answering) only in the CMUX channel 0.

If using dual-physical serial port, ATH and AT+CHUP can hang up the call

(automatically answering) only in UART1.

2.2.17 ATS3 Set Command Line Termination Character ATS3 Set Command Line Termination Character

Read Command

ATS3?

Response

<n>

OK

Parameters

See Write Command

Write Command

ATS3=<n>

Response

This parameter setting determines the character recognized by TA to

terminate an incoming Command line. The TA also returns this character in

output.

OK

ERROR

Parameters

<n> 13 Command line termination character

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

Default 13 = CR. It only supports default value.

2.2.18 ATS4 Set Response Formatting Character ATS4 Set Response Formatting Character

Read Command Response

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ATS4?

<n>

OK

Parameters

See Write Command

Write Command

ATS4=<n>

Response

This parameter setting determines the character generated by the TA for

result code and information text.

OK

ERROR

Parameters

<n> 10 Response formatting character

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

Default 10 = LF. It only supports default value.

2.2.19 A TS5 Set Command Line Editing Character ATS5 Set Command Line Editing Character

Read Command

ATS5?

Response

<n>

OK

Parameters

See Write Command

Write Command

ATS5=<n>

Response

This parameter setting determines the character recognized by TA as a

request to delete from the Command line the immediately preceding

character.

OK

ERROR

Parameters

<n> 0-8-127 Response formatting character

Parameter Saving

AT&W_SAVE

Mode

Max Response -

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Time

Reference

V.25ter

Note

Default 8 = Backspace.

2.2.20 A TS6 Pause Before Blind Dialling ATS6 Pause Before Blind Dialling

Read Command

ATS6?

Response

<n>

OK

Write Command

ATS6=<n>

Response

OK

ERROR

Parameters

<n> 0..999 Time

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

No effect in GSM

2.2.21 ATS7 Set Number of Seconds to Wait for Connection Completion ATS7 Set Number of Seconds to Wait for Connection Completion

Read Command

ATS7?

Response

<n>

OK

Parameters

See Write Command

Write Command

ATS7=<n>

Response

This parameter setting determines the amount of time to wait for the

connection completion in case of answering or originating a call.

OK

ERROR

Parameters

<n> 1-60-255 Number of seconds to wait for connection completion

Parameter Saving

AT&W_SAVE

Mode

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Max Response

-

Time

Reference

V.25ter

Note

If called party has specified a high value for ATS0=<n>, call setup may fail.

The correlation between ATS7 and ATS0 is important

Example: Call may fail if ATS7=30 and ATS0=20.

ATS7 is only applicable to data call.

2.2.22 ATS8 Set Number of Seconds to Wait for Comma Dial Modifier Encountered in

Dial String of D Command

ATS8 Set Number of Seconds to Wait for Comma Dial Modifier Encountered in Dial String of D Command

Read Command

ATS8?

Response

<n>

OK

Parameters

See Write Command

Write Command

ATS8=<n>

Response

OK

ERROR

Parameters

<n> 0-255 The value of this register determines how long the modem

should pause when it sees a comma in the dialing string.

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

No effect in GSM

2.2.23 ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier

Read Command

ATS10?

Response

<n>

OK

Parameters

See Write Command

Write Command

ATS10=<n>

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Response

This parameter setting determines the amount of time that the TA will

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remain connected in absence of data carrier. If the data carrier is once more

detected before disconnecting, the TA remains connected.

OK

ERROR

Parameters

<n> 1-15-254 Number of tenths seconds of delay

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.24 A TT Select Tone Dialing ATT Select Tone Dialing

Execution

Command

Response

OK

ATT

Parameter Saving

AUTO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.25 ATV TA Response Format ATV TA Response Format

Execution

Command

ATV<value>

Response

This parameter setting determines the contents of the header and trailer

transmitted with result codes and information responses.

When <value>=0

0 When <value>=1 OK

Parameters

<value> 0 Information response: <text><CR><LF>

Short result code format: <numeric code><CR>

1 Information response: <CR><LF><text><CR><LF>

Long result code format: <CR><LF><verbose code>

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The result codes, their numeric equivalents and brief descriptions of the use

of each are listed in the following table.

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

ATV1 ATV0 Description

OK 0 Acknowledges execution of a Command

CONNECT 1 A connection has been established; the DCE is moving from

Command state to online data state

RING 2 The DCE has detected an incoming call signal from

network

NO CARRIER 3 The connection has been terminated or the attempt to

establish a connection failed

ERROR 4 Command not recognized, Command line maximum length

exceeded, parameter value invalid, or other problem with

processing the Command line NO DIALTONE 6 No dial tone detected BUSY 7 Engaged (busy) signal detected NO ANSWER 8 "@" (Wait for Quiet Answer) dial modifier was used, but

remote ringing followed by five seconds of silence was not

detected before expiration of the connection timer (S7)

PROCEEDING 9 An AT command is being processed

CONNECT

<text>

Manufacturer-

specific

Same as CONNECT, but includes manufacturer-specific

text that may specify DTE speed, line speed, error control,

data compression, or other status

2.2.26 ATX Set CONNECT Result Code Format and Monitor Call Progress ATX Set CONNECT Result Code Format and Monitor Call Progress

Execution

Command

ATX<value>

Response

This parameter setting determines whether or not the TA detected the

presence of dial tone and busy signal and whether or not TA transmits

particular result codes.

OK

ERROR

Parameters

<value> 0 CONNECT result code only returned, dial tone and busy

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detection are both disabled.

1 CONNECT<text> result code only returned, dial tone and

busy detection are both disabled.

2 CONNECT<text> result code returned, dial tone

detection is enabled, busy detection is disabled.

3 CONNECT<text> result code returned, dial tone

detection is disabled, busy detection is enabled.

4 CONNECT<text> result code returned, dial tone and

busy detection are both enabled.

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.27 A TZ Reset Default Configuration ATZ Reset Default Configuration

Execution

Command

ATZ[<value>]

Response

TA sets all current parameters to the user defined profile.

OK

ERROR

Parameters

<value> 0 Restore profile 0

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

Parameter impacted by Z command: refer to AT&W

NOTE: Parameters related to uart operation, like csclk, ipr, icf, ifc and cmnrp, will not be reset to default configuration.

2.2.28 AT&C Set DCD Function Mo de AT&C Set DCD Function Mode

Execution

Command

AT&C<value>

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Response

This parameter determines how the state of circuit 109 (DCD) relates to the

detection of received line signal from the distant end.

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OK

ERROR

Parameters

<value> 0 DCD line is always ON

1 DCD line is ON only in the presence of data carrier

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.29 AT&D Set DTR Function Mode AT&D Set DTR Function Mode

Execution

Command

AT&D[<value>]

Response

This parameter determines how the TA responds when circuit 108/2 (DTR)

is changed from the ON to the OFF condition during data mode.

OK

ERROR

Parameters

<value> 0 TA ignores status on DTR.

1 ON->OFF on DTR: Change to Command mode with

remaining the connected call.

2 ON->OFF on DTR: Disconnect call, change to Command

mode. During state DTR = OFF is auto-answer off.

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.30 AT&F Factory Defined Configuration AT&F Factory Defined Configuration

Execution

Command

AT&F[<value>]

Response

TA sets all current parameters to the manufacturer defined profile.

OK

Parameters

<value> 0 Set all TA parameters to manufacturer defaults.

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Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

Parameter impacted by &F command: refer to AT&W

NOTE: Parameters related to uart operation, like csclk, ipr, icf, ifc and cmnrp, will not be reset to default configuration.

2.2.31 AT&V Display Current Configuration AT&V Display Current Configuration

Execution

Command

AT&V[<n>]

Response

TA returns the current parameter setting.

OK

ERROR

Parameters

<n> 0 Responses in numeric format

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.32 AT&W Store Active Profile AT&W Store Active Profile

Execution

Command

AT&W[<n>]

Response

TA stores the current parameter setting in the user defined profile.

OK

ERROR

Parameters

<n> 0 Store the current configuration in profile 0

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

SIM800 Series_AT Command Manual_V1.09 47 2015-08-03

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Reference

V.25ter

Note

The user defined profile is stored in non volatile memory.

Parameter stored by &W

Command Parameter name Displayedby &V

ATS0 <num> Y

ATS3 <char> Y

ATS4 <char> Y

ATS5 <char> Y

ATS6 <short> Y

ATS7 <time> Y

ATS8 <time> Y

ATS10 <time> Y

AT+CBST <speed>,<name>,<ce> Y

AT+CRLP <iws>,<mws>,<T1>,<N2> Y

ATV <format> Y

ATE <echo> Y

ATQ <result> Y

ATX <result> Y

AT&C <behavior> Y

AT&D <behavior> Y

AT+CLTS <timestamp> Y

AT+CREG <n> Y

AT+CGREG <n> Y

AT+CMEE <n> Y

AT+CSCLK <n> Y

AT+CIURC <mode> Y

AT+CFGRI <mode> Y

AT+CMTE <mode> Y

AT+CANT <mode>,<UrcEnable>,<timer> Y

AT+STKPCIS <switch> Y

AT+CMGF <mode> Y

AT+CNMI <mode>,<mt>,<bm>,<ds>,<bfr> Y

AT+CSCS <chest> Y

AT+VTD <n> Y

AT+CALS <n> Y

AT+CHF <ind> Y

AT+CAAS <mode> Y

AT+CBUZZERRING <mode> Y

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AT+DDET <n> Y

AT+MORING <mode> Y

AT+SVR <voice_rate_coding> Y

AT+CCPD <mode> Y

AT+CSGS <mode> Y

AT+CNETLIGHT <mode> Y

AT+SLEDS <mode>,<timer_on>,<timer_off> Y

AT+CSDT <mode> Y

AT+CSMINS <n> Y

AT+EXUNSOL <exunsol> Y

AT+IPR <n> Y

AT+IFC <TA_by_TE>, <TE_by_TA> Y

AT+ICF <format>,<parity> Y

AT+SD2PCM <mode> Y

AT+CMNRP <mode> Y

AT+ECHARGE <n> Y

AT+SIMTIMER <time> Y

AT+CSNS <mode> Y

AT+FSHEX <n> Y

2.2.33 AT+GCAP Request Complete TA Capabilities List AT+GCAP Request Complete TA Capabilities List

Execution

Command

AT+GCAP

Response

TA reports a list of additional capabilities.

+GCAP: list of supported <name>s

OK

Parameters

<name> +CGSM GSM function is supported

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.34 AT+GMI Request Manufacturer Identification AT+GMI Request Manufacturer Identification

Test Command

AT+GMI=?

SIM800 Series_AT Command Manual_V1.09 49 2015-08-03

Response

OK

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Parameters

Execution

Command

AT+GMI

TA reports one or more lines of information text which permit the user to

identify the manufacturer.

SIMCOM_Ltd

OK

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.35 AT+GMM Request TA Model Identification AT+GMM Request TA Model Identification

Test Command

AT+GMM=?

Response

OK

Execution

Command

AT+GMM

TA reports one or more lines of information text which permit the user to

identify the specific model of device.

<model>

OK

Parameters

<model> Product model identification text

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.36 AT+GMR Request TA Revision Identification of Software Release AT+GMR Request TA Revision Identification of Software Release

Test Command

AT+GMR=?

Response

OK

Execution

Command

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TA reports one or more lines of information text which permit the user to

identify the revision of software release.

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AT+GMR

Revision: <revision>

OK

Parameters

<revision> Revision of software release

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.37 AT+GOI Request Global Object Identification AT+GOI Request Global Object Identification

Test Command

AT+GOI=?

Response

OK

Execution

Command

AT+GOI

Response

TA reports one or more lines of information text which permit the user to

identify the device, based on the ISO system for registering unique object

identifiers.

OK

Parameters

<Object Id> Identifier of device type

see X.208, 209 for the format of <Object Id>

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.38 AT+GSN Request TA Serial Number Identification (IMEI) AT+GSN Request TA Serial Number Identification(IMEI)

Test Command

AT+GSN=?

Execution

Command

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Response

OK

Response

TA reports the IMEI (international mobile equipment identifier) number in

Smart Machine Smart Decision

AT+GSN

information text which permit the user to identify the individual ME device.

<sn>

OK

Parameters

<sn> IMEI of the telephone(International Mobile station Equipment

Identity)

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

The serial number (IMEI) is varied by individual ME device.

2.2.39 AT+ICF Set TE-TA Control Character Framing AT+ICF Set TE-TA Control Character Framing

Test Command

AT+ICF=?

Response

+ICF: (list of supported <format>s),(list of supported <parity>s)

OK

Read Command

AT+ICF?

Write Command

AT+ICF=<forma t>[,<parity>]

Parameters

See Write Command

Response

+ICF: <format>,<parity>

OK

Parameters

See Write Command

Response

This parameter setting determines the serial interface character framing

format and parity received by TA from TE.

OK

Parameters

<format> 1 8 data 0 parity 2 stop

2 8 data 1 parity 1 stop

3 8 data 0 parity 1 stop

4 7 data 0 parity 2 stop

5 7 data 1 parity 1 stop

6 7 data 0 parity 1 stop

<parity> 0 odd

1 even

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3 space (0)

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

The Command is applied for Command state;

In <format> parameter, "0 parity" means no parity; The <parity> field is ignored if the <format> field specifies no parity and string "+ICF: <format>,255" will be response to AT+ICF? Command.

2.2.40 AT+IFC Set TE-TA Local Data Flow Contro AT+IFC Set TE-TA Local Data Flow Control

Test Command

AT+IFC=?

Response

+IFC: (list of supported <dce_by_dte>s),(list of supported <dte_by_dce>s)

OK

Parameters

See Write Command

l

Read Command

AT+IFC?

Write Command

AT+IFC=<dce_b y_dte>[,<dte_by _dce>]

Response

+IFC: <dce_by_dte>,<dte_by_dce>

OK

Parameters

See Write Command

Response

This parameter setting determines the data flow control on the serial

interface for data mode.

OK

Parameters

<dce_by_dte> Specifies the method will be used by TE at receive of

data from TA

0 No flow control

1 Software flow control

2 Hardware flow control

<dte_by_dce> Specifies the method will be used by TA at receive of data

from TE

0 No flow control

1 Software flow control

2 Hardware flow control

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Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

V.25ter

Note

2.2.41 AT+IPR Set TE-TA Fixed Local Rate AT+IPR Set TE-TA Fixed Local Rate

Test Command

AT+IPR=?

Response

+IPR: (list of supported auto detectable <rate>s),(list of supported fixed-only <rate>s)

OK

Parameters

See Write Command

Read Command

AT+IPR?

Response

+IPR: <rate>

OK

Write Command

AT+IPR=<rate>

Parameters

See Write Command

Response

This parameter setting determines the data rate of the TA on the serial

interface. The rate of Command takes effect following the issuance of any

result code associated with the current Command line.

OK

Parameters

<rate> Baud rate per second

0 (Auto-bauding)

1200

2400

4800

9600

19200

38400

57600

115200

230400

460800

Parameter Saving

AT&W_SAVE

Mode

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Max Response

-

Time

Reference

V.25ter

Note

Factory setting is AT+IPR=0（auto-bauding）.

2.2.41.1 Auto-bauding

Synchronization between DTE and DCE ensure that DTE and DCE are correctly synchronized and

the baud rate used by the DTE is detected by the DCE (= ME).To allow the baud rate to be

synchronized, simply issue an "AT" string. This is necessary when you start up the module while

auto-bauding is enabled. It is recommended to wait 3 to 5 seconds before sending the first AT

character. Otherwise undefined characters might be returned.

If you want to use auto-bauding and auto-answer at the same time, you can easily enable the

DTE-DCE synchronization, when you activate auto-bauding first and then configure the

auto-answer mode.

Restrictions on auto-bauding operation

The serial interface has to be operated at 8 data bits, no parity and 1 stop bit (factory setting).

Only the strings "AT" or "at" can be detected when auto-bauding is enabled.

AT+IPR=0 setting to auto-bauding will take effect after module resets.

Unsolicited Result Codes that may be issued before the ME detects the new baud rate (by

receiving the first AT Command string) will be sent at the previously detected baud rate.The

Unsolicited Result Codes

"RDY" and so on are not indicated when you start up the ME while

auto-bauding is enabled.

It is not recommended to switch to auto-bauding from a baud rate that cannot be detected by the

auto-bauding mechanism (e.g. 300 baud). Responses to +IPR=0 and any commands on the same

line might be corrupted.

Auto-bauding and baud rate after restart

The most recently detected baud rate can not be stored when module is powered down.

2.2.42 A T+HVOIC Disconnect Voice Call Only AT+HVOIC Disconnect Voice Call Only

Execution

Command

AT+HVOIC

Response

Disconnect existing voice call by local TE from Command line and

terminate call with existing PPP or CSD connection on.

OK

Parameter Saving

NO_SAVE

Mode

Max Response

20s

Time

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Reference

V.25ter

Note

3 AT Commands According to 3GPP TS 27.007

3.1 Overview of AT Command According to 3GPP TS 27.007

Command Description

AT + CA C M Accumulated call meter(ACM) reset or query

AT+CAMM Accumulated call meter maximum(ACM max) set or query

AT+CAOC Advice of charge

AT+CBST Select bearer service type

AT+CCFC Call forwarding number and conditions control

AT+CCWA Call waiting control

AT+CEER Extended error report

AT + CG M I Request manufacturer identification

AT+CGMM Request model identification

AT + CG M R Request TA revision identification of software release

AT+CGSN Request product serial number identification (identical with +GSN)

AT+CSCS Select TE character set

AT + CS TA Select type of address

AT+CHLD Call hold and multiparty

AT+CIMI Request international mobile subscriber identity

AT+CLCC List current calls of ME

AT + CL C K Facility lock

AT + CL I P Calling line identification presentation

AT + CL I R Calling line identification restriction

AT+CMEE Report mobile equipment error

AT + CO L P Connected line identification presentation

AT+COPS Operator selection

AT + CPA S Phone activity status

AT+CPBF Find phonebook entries

AT+CPBR Read current phonebook entries

AT+CPBS Select phonebook memory storage

AT + CP B W Write phonebook entry

AT + CP I N Enter PIN

AT + CP W D Change password

AT+CR Service reporting control

AT+CRC Set cellular result codes for incoming call indication

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AT+CREG Network registration

AT+CRLP Select radio link protocol parameters

AT+CRSM Restricted SIM access

AT + CS Q Signal quality report

AT + VT D Tone duration

AT + VT S DTMF and tone generation

AT+CMUX Multiplexer control

AT+CNUM Subscriber number

AT + CP O L Preferred operator list

AT+COPN Read operator names

AT+CFUN Set phone functionality

AT+CCLK Clock

AT + CS I M Generic SIM access

AT + CA L M Alert sound mode

AT + CA L S Alert sound select

AT+CRSL Ringer sound level

AT + CL VL Loud speaker volume level

AT + CM U T Mute control

AT + CP U C Price per unit and currency table

AT+CCWE Call meter maximum event

AT+CBC

Battery charge

AT+CUSD Unstructured supplementary service data

AT+CSSN Supplementary services notification

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

AT+CACM Accumulated Call Meter(ACM) Reset or Query

Test Command

AT+CACM=?

Read Command

AT+CACM?

Response

OK

Response

TA returns the current value of ACM.

+CACM: <acm>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<acm> String type (string should be included in quotation marks);

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three bytes of the current ACM value in hexa-decimal format (e.g.

"00001E" indicates decimal value 30)

000000 – FFFFFF

Write Command

AT+CACM=<pa sswd>

Response

TA resets the Advice of Charge related accumulated call meter (ACM)

value in SIM file EF (ACM). ACM contains the total number of home

units for both the current and preceding calls.

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<passwd> String type (string should be included in quotation marks):

SIM PIN2

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.2 AT+CAMM Accumulated Call Meter Maximum (ACM max) Set or Query

AT+CAMM Accumulated Call Meter Maximum(ACM max) Set or Query

Test Command

AT+CAMM=?

Read Command

AT+CAMM?

Response

OK

Response

TA returns the current value of ACM max.

+CAMM: <acmmax>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

See Write Command

Write Command

AT+CAMM=<ac mmax>[,<passwd >]

Response

TA sets the Advice of Charge related accumulated call meter maximum

value in SIM file EF (ACM max). ACM max contains the maximum

number of home units allowed to be consumed by the subscriber.

OK ERROR

If error is related to ME functionality:

+CME ERROR: <err>

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Parameters

<acmmax> String type (string should be included in quotation

marks); three bytes of the max. ACM value in hex-decimal format (e.g.

"00001E" indicates decimal value 30)

000000 disable ACMmax feature

000001-FFFFFF

<passwd> String type (string should be included in quotation marks)

SIM PIN2

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.3 AT+CAOC Advice of Charge

AT+CAOC Advice of Charge

Test Command

AT+CAOC=?

Response

+CAOC: (list of supported <mode>s)

OK

Parameters

See Write Command

Read Command

AT+CAOC?

Response

+CAOC: <mode>

OK

Parameters

See Write Command

Write Command

AT+CAOC=<mo de>

Response

TA sets the Advice of Charge supplementary service function mode.

If <mode>=0, TA returns the current call meter value

+CAOC: <ccm>

OK

If <mode>=1, TA deactivates the unsolicited reporting of CCM value

OK

If <mode>=2, TA activates the unsolicited reporting of CCM value

OK ERROR

If error is related to ME functionality:

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+CME ERROR: <err>

Parameters

<mode> 0 Query CCM value

1 Deactivate the unsolicited reporting of CCM value

2 Activate the unsolicited reporting of CCM value

<ccm> String type (string should be included in quotation marks);

three bytes of the current CCM value in hex-decimal format (e.g.

"00001E" indicates decimal value 30); bytes are similarly coded as

ACMmax value in the SIM 000000-FFFFFF

Execution

Command

AT+CAOC

Response

+CAOC: <ccm>

OK

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.4 AT+CBST Select Bearer Service Type

AT+CBST Select Bearer Service Type

Test Command

AT+CBST=?

Response

+CBST: (list of supported <speed>s),(list of supported <name>s),(list of supported <ce>s)

OK

Parameters

See Write Command

Read Command

AT+CBST?

Response

+CBST: <speed>,<name>,<ce>

OK

Parameters

See Write Command

Write Command

AT+CBST=<spee d>[,<name>[,<ce >]]

Response

TA selects the bearer service <name> with data rate <speed>, and the connection element <ce> to be used when data calls are originated.

OK ERROR

Parameters

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<speed> 0 Auto-bauding (automatic selection of the speed; this

setting is possible in case of 3.1kHz modern and non-transparent service)

4 2400 bps (V.22bis)

5 2400 bps (V.26ter)

6 4800 bps (V.32)

7 9600 bps (V.32)

12 9600 bps (V.34)

14 14400 bps (V.34)

68 2400 bps (V.110 or X.31 flag stuffing)

70 4800 bps (V.110 or X.31 flag stuffing)

71 9600 bps (V.110 or X.31 flag stuffing)

75 14400 bps (V.110 or X.31 flag stuffing)

<name> 0

Data circuit asynchronous (UDI or 3.1 kHz modem)

4

Data circuit asynchronous (RDI)

<ce> 0 Transparent

1 Non-transparent

2 Both, transparent prefered

3 Both, non-transparent prefered

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

GSM 02.02[1]: lists the allowed combinations of the sub parameters.

[14]

3.2.5 AT+CCFC Call Forwar ding Number and Conditions Control AT+CCFC Call Forwarding Number and Conditions Control

Test Command

AT+CCFC=?

Response

+CCFC: (list of supported <reason>s)

OK

Parameters

See Write Command

Write Command

AT+CCFC=<rea son>,<mode>[,< number>[,<type >[,<class>[,<sub addr>[,<satype>[ ,time]]]]]]

Response

TA controls the call forwarding supplementary service. Registration,

erasure, activation, deactivation, and status query are supported.

Only ,<reads> and <mode> should be entered with mode (0-2,4)

If <mode>≠2 and Command successful

OK

If <mode>=2 and Command successful (only in connection with <reason> 0

–3)

For registered call forwarding numbers:

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when <mode>=2 and command successful:

+CCFC: <status>,<class1>[,<number>,<type>[,<subaddr>,<satype>[,<time>]]] [<CR><LF>+CCFC: <status>,<class2>[,<number>,<type>[,<subaddr>,<satype>[,<time>]]][ …] OK

If no call forwarding numbers are registered (and therefore all classes are

inactive):

+CCFC: <status>, <class>

OK

where <status>=0 and <class>=7

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<reason> 0 Unconditional

1 Mobile busy

2 No reply

3 Not reachable

4 All call forwarding

5 All conditional call forwarding

<mode> 0 Disable

1 Enable

2 Query status

3 Registration

4 Erasure

<number> String type (Phone number of forwarding address in format

specified by <type>)

<type> Type of address <subaddr> String type (subaddress of format specified by <satype>) <satype> Type of sub-address in integer <class> 1 Voice (telephony)

2 Data (refers to all bearer services; with <mode>=2 this

may refer only to some bearer service if TA does not support

values 16, 32, 64 and 128)

4 Fax (facsimile services)

7 All classes

<time> 1..30 When "no reply" is enabled or queried, this gives the time

in seconds to wait before call is forwarded, default value is 20.Supported

only if it is multiples of 5.

0 Not active

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1 Active

Parameter Saving

NO_SAVE

Mode

Max Response

15s

Time

Reference

3GPP TS 27.007

Note

3.2.6 AT+CCWA Call Waiting Control AT+CCWA Call Waiting Control

Test Command

AT+CCWA=?

Response

+CCWA: (list of supported <n>s)

OK

Parameters

See Write Command

Read Command

AT+CCWA?

Response

+CCWA: <n>

OK

Write Command

AT+CCWA=<n>[, <mode>[,<class>]]

Parameters

See Write Command

Response

TA controls the Call Waiting supplementary service. Activation,

deactivation and status query are supported.

If <mode>≠2 and Command successful

OK

If <mode>=2 and Command successful

+CCWA: <status>,<class1>[<CR><LF>+CCWA:<status>,<class2>[...]]

OK ERROR

If error is related to ME functionality:

+CME ERROR: <err>

Note: <status>=0 should be returned only if service is not active for any

<class> i.e. +CCWA: 0, 7 will be returned in this case.

When mode=2, all active call waiting classes will be reported. In this mode

the Command is aborted by pressing any key.

Parameters

<n> 0 Disable presentation of an unsolicited result code

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1 Enable presentation of an unsolicited result code

<mode> When <mode> parameter not given, network is not

interrogated

0 Disable

1 Enable

2 Query status

<class> Is a sum of integers each representing a class of information

1 Voice (telephony)

2 Data (refers to all bearer services; with <mode>=2 this

may refer only to some bearer service if TA does not support values 16,

32, 64 and 128

4 Fax (facsimile services)

7 Default(1+2+4)

<status> 0 Not active

1 Active

Unsolicited result code

RING

+CCWA: <number>,<type>,<class>[,<alpha>]

Parameters

<number> String type (string should be included in quotation marks)

phone number of calling address in format specified by <type>

<type> Type of address octet in integer format;

129 Unknown type

161 National number type

145 International number type

177 Network specific number

<alpha> Optional string type (string should be included in quotation

marks) alphanumeric representation of <number> corresponding to the

entry found in phone book.

Parameter Saving

NO_SAVE

Mode

Max Response

15s

Time

Reference

3GPP TS 27.007

Note

3.2.7AT+CEER Extended Error Report

AT+CEER Extended Error Report

Test Command

AT+CEER=?

Response

+CEER: (list of supported <n>s)

OK

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Parameters

See Write Command

Read Command

AT+CEER?

Write Command

AT+CEER=<n>

Execution

Command

AT+CEER

Response

+CEER: <n>

OK

Parameters

See Write Command

Response

OK

Parameter

<n> 0 The reason for last call release as text code

1 The reason for last call release as number code

Response

TA returns an extended report of the reason for the last call release.

+CEER: <report>

OK

Parameters

<report> If AT+CEER=0, return <s>

<s> a string that represents the Cause

If AT+CEER=1, return

Cause:<c>

<c> number representing the Cause

Parameters

<c>(number) <s>(string)

0 (No cause)

1 (unassigned (unallocated) number)

3 (no route to destination)

6 (channel unacceptable)

8 (operator determined barring)

16 (normal call clearing)

17 (user busy)

18 (no user responding)

19 (user alerting, no answer)

21 (call rejected)

22 (number changed)

26 (non-selected user clearing)

27 (destination out of order)

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28 (invalid number format (incomplete number))

29 (facility rejected)

30 (response to STATUS ENQUIRY)

31 (normal, unspecified)

34 (

emergency call not possible

)

38 (network out of order)

41 (temporary failure)

42 (switching equipment congestion)

43 (access information discarded)

44 (requested circuit/channel not available)

47 (resource unavailable, unspecified)

49 (quality of service unavailable)

50 (Requested facility not subscribed)

55 (Incoming calls barred within the CUG)

57 (bearer capability not authorized)

58 (bearer capability not presently available)

63 (service or option not available, unspecified)

68 (ACM equal to or greater than ACMmax)

65 (bearer service not implemented)

69 (Requested facility not implemented)

70 (only restricted digital information bearer capability is

available)

79 (service or option not implemented,unspecified)

81 (invalid transaction identifier value)

87 (user not member of CUG)

88 (incompatible destination)

91 (invalid transit network selection)

95 (semantically incorrect message)

96 (invalid mandatory information)

97 (message type non-existent or not implemented)

98 (message type not compatible with protocol state)

99 (information element non-existent or not implemented)

100 (conditional IE error)

101 (message not compatible with protocol state)

102 (recovery on timer expiry)

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111 (protocol error, unspecified)

127 (interworking, unspecified)

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.8 AT+CGMI Request Manufacturer Identification

AT+CGMI Request Manufacturer Identification

Test Command

AT+CGMI=?

Execution

Command

AT+CGMI

Response

OK

Response

TA returns manufacturer identification text.

OK

Parameters

<manufacturer> The ID of manufacturer

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.9 AT+CGMM Request Model Identification

AT+CGMM Request Model Identification

Test Command

AT+CGMM=?

Execution

Command

AT+CGMM

Response

OK

Response

TA returns product model identification text.

<model>

OK

Parameters

<model> Product model identification text

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Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.10 AT+CGMR Request TA Revision Identification of Software Release

AT+CGMR Request TA Revision Identification of Software Release

Test Command

AT+CGMR=?

Execution

Command

AT+CGMR

Response

OK

Response

TA returns product software version identification text.

Revision: <revision>

OK

Parameters

<revision> Product software version identification text

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.11 AT+CGSN Request Product Serial Number Identification (Identical with +GSN)

AT+CGSN Request Product Serial Number Identification (Identical with +GSN)

Test Command

AT+CGSN=?

Execution

Command

AT+CGSN

Response

OK

Response

see +GSN

<sn>

OK

Parameters

<sn> International mobile equipment identity (IMEI)

Parameter Saving

NO_SAVE

Mode

Max Response -

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Time

Reference

3GPP TS 27.007

Note

[13]

3.2.12 AT+CSCS Select TE Character Set

AT+CSCS Select TE Character Set

Test Command

AT+CSCS=?

Response

+CSCS: (list of supported <chset>s)

OK

Parameters

<chset> "GSM" GSM 7 bit default alphabet (3GPP TS 23.038);

"UCS2" 16-bit universal multiple-octet coded character set

(ISO/IEC10646); UCS2 character strings are converted to

hexadecimal numbers from 0000 to FFFF; e.g.

"004100620063" equals three 16-bit characters with decimal

values 65, 98 and 99

"IRA" International reference alphabet (ITU-T T.50)

"HEX" Character strings consist only of hexadecimal

ers from 00 to FF;

"PCCP" PC character set Code

"PCDN" PC Danish/Norwegian character set

"8859-1" ISO 8859 Latin 1 character set

Read Command

AT+CSCS?

Response

+CSCS: <chset>

OK

Parameters

See Test Command

Write Command

AT+CSCS=<chse t>

Response

Sets which character set <chset> are used by the TE. The TA can then

convert character strings correctly between the TE and ME character sets.

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

See Test Command

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

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Reference

3GPP TS 27.007

Note

[13]

3.2.13 AT+CSTA Select Type of Address

AT+CSTA Select Type of Address

Test Command

AT+CSTA=?

Response

+CSTA: (list of supported <type>s)

OK

Parameters

See Write Command

Read Command

AT+CSTA?

Response

+CSTA: <type>

OK

Parameter

<type> Current address type setting.

Write Command

AT+CSTA=<type >

Response

OK

If <type> is not in the parameter range:

ERROR

Parameters

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

The ATD Command overrides this setting when a number is dialed.

[13]

<type> Type of address octet in integer format;

129 Unknown type

161 National number type

145 International number type

177 Network specific number

3.2.14 AT+CHLD Call Hold and Multiparty AT+CHLD Call Hold and Multiparty

Test Command

AT+CHLD=?

Response

+CHLD: (list of supported <n>s)

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OK

Parameters

See Write Command

Write Command

AT+CHLD=<n>

Response

TA controls the supplementary services Call Hold, Multiparty and Explicit

Call Transfer. Calls can be put on hold, recovered, released, added to

conversation, and transferred.

Note These supplementary services are only applicable to tele service 11

(Speech: Telephony).

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<n> 0 Releases all held calls or sets User Determined User Busy

(UDUB) for a waiting call

1 Releases all active calls (if any exist) and accepts the other

(held or waiting) call.

1x Releases a specific call x

2 Place all active calls on hold (if any) and accept the other

(held or waiting) call.

2x Places all active calls on hold except call X with which

communication shall be supported.

3 Adds a held call to the conversation.

4 Connects the two calls and disconnects the subscriber from

both calls(ECT)

Parameter Saving

NO_SAVE

Mode

Max Response

20s

Time

Reference Note

3.2.15 AT+CIMI Request International Mobile Subscriber Identity

AT+CIMI Request International Mobile Subscriber Identity

Test Command

AT+CIMI=?

Execution

Command

AT+CIMI

Response

OK

Response

TA returns <IMSI>for identifying the individual SIM which is attached to

ME.

<IMSI>

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OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<IMSI> International Mobile Subscriber Identity (string without

double quotes)

Parameter Saving

NO_SAVE

Mode

Max Response

20s

Time

Reference

Note

3GPP TS 27.007

[13]

3.2.16 AT+CLCC List Current Calls of ME

AT+CLCC List Current Calls of ME

Test Command

AT+CLCC=?

Response

+CLCC: (0,1)

OK

Parameters

See Write Command

Read Command

AT+CLCC?

Response

+CLCC: <n>

OK

Parameters

See Write Command

Write Command

AT+CLCC=<n>

Response

OK

Parameters

<n> 0 Don’t report a list of current calls of ME automatically

when the current call status changes.

1 Report a list of current calls of ME automatically when the

current call status changes.

Execution

Command

AT+CLCC

Response

TA returns a list of current calls of ME.

Note: If Command succeeds but no calls are available, no information

response is sent to TE.

[+CLCC: <id1>,<dir>,<stat>,<mode>,<mpty>[,<number>,<type >,<alphaID>] [<CR><LF>+CLCC: <id2>,<dir>,<stat>,<mode>,<mpty>

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[,<number>,<type>,<alphaID>][...]]]

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<idx> 1..7 Call identification number

This number can be used in +CHLD command operations

<dir> 0 Mobile originated (MO) call

1 Mobile terminated (MT) call

<stat> State of the call:

0 Active

1 Held

2 Dialing (MO call)

3 Alerting (MO call)

4 Incoming (MT call)

5 Waiting (MT call)

6 Disconnect

<mode> Bearer/tele service:

0 Voice

1 Data

2 Fax

<mpty> 0 Call is not one of multiparty (conference) call parties

1 Call is one of multiparty (conference) call parties

<number> String type (string should be included in quotation marks)

phone number in format specified by <type>.

<type> Type of address <alphaId> String type (string should be included in quotation marks)

alphanumeric representation of <number> corresponding to the entry

found in phone book.

Parameter Saving

AUTO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13][14]

3.2.17 AT+CLCK Facility Lock AT+CLCK Facility Lock

Test Command

AT+CLCK=?

Response

+CLCK: (list of supported <fac>s)

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OK

Parameters

See Write Command

Write Command

AT+CLCK=<fac> ,<mode>[,<passw d>[,<class>]]

Response

This Command is used to lock, unlock or interrogate a ME or a network

facility <fac>. Password is normally needed to do such actions. When

querying the status of a network service (<mode>=2) the response line for

‘not active’ case (<status>=0) should be returned only if service is not

active for any <class>.

If <mode>≠2 and Command is successful

OK

If <mode>=2 and Command is successful

+CLCK: <status>[,<class1>[<CR><LF>+CLCK: <status>,<class2>[…]]

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<fac>

"AO" BAOC (Barr All Outgoing Calls)

"OI" BOIC (Barr Outgoing International Calls)

"OX" BOIC-exHC (Barr Outgoing International Calls

except to Home Country)

"AI" BAIC (Barr All Incoming Calls)

"IR" BIC-Roam (Barr Incoming Calls when Roaming

outside the home country)

"FD" SIM card or active application in the UICC (GSM or

USIM) fixed dialling memory feature (if PIN2 authentication has not been

done during the current session, PIN2 is required as <passwd>)

"SC" SIM (lock SIM/UICC card) (SIM/UICC asks

password in MT power-up and when this lock command issued)

Correspond to PIN1 code.

"PN" Network Personalization, Correspond to NCK code

"PU" Network subset Personalization

Correspond to NSCK code

"PP" Service Provider Personalization

Correspond to SPCK code

<mode> 0 unlock

1 lock

2 query status

<passwd> String type (Shall be the same as password specified for the

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facility from the MT user interface or with command Change Password

+CPWD) <class> 1 Voice (telephony)

2 Data refers to all bearer services; with <mode>=2 this

may refer only to some bearer service if TA does not support values 16,

32, 64 and 128)

4 Fax

(facsimile services)

7 All classes

<status> 0 Not active

1 Active

Parameter Saving

NO_SAVE

Mode

Max Response

15s

Time

Reference

3GPP TS 27.007

Note

CME errors if SIM not inserted or PIN is not entered.

[14]

3.2.18 AT+CLIP Calling Line Identification Presentation AT+CLIP Calling Line Identification Presentation

Test Command

AT+CLIP=?

Response

+CLIP: (list of supported <n>s)

OK

Parameters

See Write Command

Read Command

AT+CLIP?

Response

+CLIP: <n>, <m>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

See Write Command

Write Command

AT+CLIP=<n>

Response

TA enables or disables the presentation of the CLI at the TE. It has no

effect on the execution of the supplementary service CLIP in the network.

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<n> 0 Disable +CLIP notification.

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1 Enable +CLIP notification.

<m> 0 CLIP not provisioned

1 CLIP provisioned

2 Unknown (e.g. no network, etc.)

Unsolicited Result Code

When the presentation of the CLI at the TE is enabled (and calling

subscriber allows), an unsolicited result code is returned after every RING

(or +CRING: <type>) at a mobile terminating call.

+CLIP: <number>,<type>[,<subaddr>,<satype>,<alphaId>,<CLI validity>]

Parameters

<number> String type (string should be included in quotation marks)

phone number of calling address in format specified by <type>.

<type> Type of address octet in integer format;

129 Unknown type

161 National number type

145 International number type

177 Network specific number

<subaddr> String type (

subaddress of format specified by <satype>)

<satype> Integer type (type of subaddress) <alphaId> String type (string should be included in quotation marks)

alphanumeric representation of <number> corresponding to the entry

found in phone book.

0 CLI valid

1 CLI has been withheld by the originator.

2 CLI is not available due to interworking problems or

limitations of originating network.

Parameter Saving

NO_SAVE

Mode

Max Response

15s

Time

Reference Note

3.2.19 AT+CLIR Calling Line Identification Restriction AT+CLIR Calling Line Identification Restriction

Test Command

AT+CLIR=?

Response

+CLIR: (list of supported <n>s)

OK

Parameters

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See Write Command

Read Command

AT+CLIR?

Write Command

AT+CLIR=<n>

Response

+CLIR: <n>, <m>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

See Write Command

Response

TA restricts or enables the presentation of the CLI to the called party when

originating a call.

The Command overrides the CLIR subscription (default is restricted or

allowed) when temporary mode is provisioned as a default adjustment for

all following outgoing calls. This adjustment can be revoked by using the

opposite Command.

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<n> (parameter sets the adjustment for outgoing calls):

0 Presentation indicator is used according to the subscription of

the CLIR service.

1 CLIR invocation

2 CLIR suppression

<m> (parameter shows the subscriber CLIR service status in the

network):

0 CLIR not provisioned

1 CLIR provisioned in permanent mode

2 Unknown (e.g. no network, etc.)

3 CLIR temporary mode presentation restricted

4 CLIR temporary mode presentation allowed

Parameter Saving

NO_SAVE

Mode

Max Response

15s

Time

Reference Note

3.2.20 AT+CMEE Report Mobile Equipment Error

AT+CMEE Report Mobile Equipment Error

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Test Command

AT+CMEE=?

Read Command

AT+CMEE?

Write Command

AT+CMEE=[<n> ]

Response

+CMEE: (list of supported <n>s)

OK

Parameters

See Write Command

Response

+CMEE: <n>

OK

Parameters

See Write Command

Response

TA disables or enables the use of result code +CME ERROR: <err> as an

indication of an error relating to the functionality of the ME.

OK

If error is related to ME functionality:

+CME ERROR:<err>

Parameters

<n> 0 Disable +CME ERROR: <err> result code and use ERROR

instead.

1 Enable +CME ERROR: <err> result code and use numeric

<err>

2 Enable +CME ERROR: <err> result code and use verbose

<err> values

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.21 AT+COLP Connected Line Identification Presentation AT+COLP Connected Line Identification Presentation

Test Command

AT+COLP=?

Response

+COLP: (list of supported <n>s)

OK

Parameters

See Write Command

Read Command Response

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AT+COLP?

Write Command

AT+COLP=<n>

+COLP: <n>,<m>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

See Write Command

Response

TA enables or disables the presentation of the COL (Connected Line) at the

TE for a mobile originated call. It has no effect on the execution of the

supplementary service COLR in the network.

Intermediate result code is returned from TA to TE before any +CR or

V.25ter responses.

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<n> (parameter sets/shows the result code presentation status in the

TA):

0 Disable +COLP notification

1 Enable +COLP notification

<m> (parameter shows the subscriber COLP service status in the

network):

0 COLP not provisioned

1 COLP provisioned

2 Unknown (e.g. no network, etc.)

Intermediate result code

When enabled (and called subscriber allows), an intermediate result code is

returned before any +CR or V.25ter responses:

+COLP: <number>,<type>[,<subaddr>,<satype> ,<alphaId>]

Parameters

<number> String type (string should be included in quotation marks)

phone number of format specified by <type>

<type> Type of address octet in integer format;

129 Unknown type

161 National number type

145 International number type

177 Network specific number

<subaddr> String type (string should be included in quotation marks)

sub address of format specified by <satype>

<satype> Type of sub address octet in integer format (refer GSM

04.08 [8] sub clause 10.5.4.8)

<alphaId> String type (string should be included in quotation marks)

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alphanumeric representation of <number> corresponding to the entry

found in phone book.

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference Note

3.2.22 AT+COPS Operator Selection

AT+COPS Operator Selection

Test Command

AT+COPS=?

Response

TA returns a list of quadruplets, each representing an operator present in

the network. Any of the formats may be unavailable and should then be an

empty field. The list of operators shall be in order: home network,

networks referenced in SIM, and other networks.

+COPS: (list of supported<stat>,long alphanumeric<oper>,short alphanumeric<oper>,numeric <oper>)s[,,(list of supported <mode>s),

(list of supported <format>s)]

OK

If error is related to ME functionality:

+CME ERROR: <err>

Read Command

AT+COPS?

Write Command

AT+COPS=<mo de>,[<format>[,< oper>]]

Parameters

See Write Command

Response

TA returns the current mode and the currently selected operator. If no

operator is selected, <format> and <oper> are omitted.

+COPS: <mode>[,<format>, <oper>]

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

See Write Command

Response

TA forces an attempt to select and register the GSM network operator. If

the selected operator is not available, no other operator shall be selected

(except <mode>=4). The selected operator name format shall apply to

further read commands (+COPS?).

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OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<stat> 0 Unknown

1 Operator available

2 Operator current

3 Operator forbidden

<oper>

Refer to [27.007]

operator in format as per <format>

<mode> 0 Automatic mode; <oper> field is ignored

1 Manual (<oper> field shall be present, and <AcT>

optionally)

2 manual deregister from network

3 set only <format> (for read Command +COPS?) - not

shown in Read Command response

4 Manual/automatic (<oper> field shall be present); if

manual selection fails, automatic mode (<mode>=0) is

entered

<format> 0 Long format alphanumeric <oper>

1 Short format alphanumeric <oper>

2 Numeric <oper>; GSM Location Area Identification

number

Parameter Saving

AUTO_SAVE

Mode

Max Response

Time

Reference

3GPP TS 27.007

Test command: 45 seconds

Write command: 120 seconds

Note

[14]

3.2.23 AT+CPAS Phone Activity Status

AT+CPAS Phone Activity Status

Test Command

AT+CPAS=?

Response

+CPAS: (list of supported <pas>s)

OK

Parameters

See Execution Command

Execution

Command

AT+CPAS

Response

TA returns the activity status of ME.

+CPAS: <pas>

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OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<pas> 0 Ready (MT allows commands from TA/TE)

2

Unknown (MT is not guaranteed to respond to

ructions)

3 Ringing (MT is ready for commands from TA/TE, but the

ringer is active)

4 Call in progress (MT is ready for commands from TA/TE,

a call is in progress)

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.24 AT+CPBF Find Phonebook Entries AT+CPBF Find Phonebook Entries

Test Command

AT+CPBF=?

Response

+CPBF: maximum length of field <nlength>,maximum length of field <tlength>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

See Write Command

Write Command

AT+CPBF=[<find text>]

Response

TA returns phone book entries(from the current phone book memory

storage selected with +CPBS) which contains alphanumeric string

<findtext>.

[+CPBF:<index1>,<number>,<type>,<text>] [[…]<CR><LF>+CBPF:<index2>,<number>,<type>,<text>]

OK

Parameters

<findtext> String type(string should be included in quotation marks)

field of maximum length <tlength> in current TE character set specified by

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+CSCS.

<index1> Integer type values in the range of location numbers of phone book memory <index2> Integer type values in the range of location numbers of phone

book memory

<number> String type (string should be included in quotation marks)

phone number of format <type>

<type> Type of address octet in integer format ;

129 Unknown type

145 International number type

<text> String type (string should be included in quotation marks) field

of maximum length <tlength> in current TE character set specified by

+CSCS.

<nlength> Integer type value indicating the maximum length of field

<tlength> Integer type value indicating the maximum length of field

<text>

Parameter Saving

NO_SAVE

Mode

Max Response

Time

30 seconds (complete reading of a 250 records full phonebook)

3 seconds(string present in a 250 records full phonebook)

1 second(string not present)

We use the China Mobile sim cards for testing, which produced by Axalto

at 2010 for Shanghai. Use other sim cards may have different results.

Reference

3GPP TS 27.007

Note

[13]

3.2.25 AT+CPBR Read Current Phonebook Entries AT+CPBR Read Current Phonebook Entries

Test Command

AT+CPBR=?

Response

TA returns location range supported by the current storage as a compound

value and the maximum lengths of <number> and <text> fields.

+CPBR: (list of supported <index>s), <nlength>, <tlength>

OK

Parameters

<index> Location number <nlength> Max. length of phone number <tlength> Max. length of text for number

Write Command

AT+CPBR=<inde

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Response

TA returns phone book entries in location number range <index1>...

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x1>[,<index2>]

<index2> from the current phone book memory storage selected with

+CPBS. If <index2> is left out, only location <index1> is returned.

+CPBR:<index1>,<number>,<type>,<text> [[…]<CR><LF>+CPBR: <index2>, <number>, <type>, <text>]

OK

Parameters

<index1> Read as of this location number <index2> Read to this location number <number> Phone number <type> Type of number <text> Text for phone number in current TE character set specified by

+CSCS.

Parameter Saving

NO_SAVE

Mode

Max Response

Time

3 seconds (single reading)

30 seconds (complete reading of a 250 records full phonebook.

We use the China Mobile sim cards for testing, which produced by Axalto

at 2010 for Shanghai. Use other sim cards may have different results.

Reference

3GPP TS 27.007

Note

[13]

3.2.26 AT+CPBS Select Phonebook Memory Storage AT+CPBS Select Phonebook Memory Storage

Test Command

AT+CPBS=?

Response

+CPBS: (list of supported <storage>s)

OK

Parameters

See Write Command

Read Command

AT+CPBS?

Response

+CPBS: <storage>,<used>,<total>

OK

Parameters

See Write Command

Write Command

AT+CPBS=<stora ge>

Response

TA selects current phone book memory storage, which is used by other

phone book commands.

OK

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Parameters

"ON" SIM (or MT) own numbers (MSISDNs) list

(reading of this storage may be available through +CNUM

also). When storing information in the SIM/UICC, if a SIM

card is present or if a UICC with an active GSM application

is present, the information in EFMSISDN under

DFTelecom is selected.

"SM" SIM/UICC phonebook. If a SIM card is present or

if a UICC with an active GSM application is present, the

EFADN under DFTelecom is selected.

"ME" ME phonebook

"FD" SIM fix dialing-phone book. If a SIM card is

present or if a UICC with an active GSM application is

present, the information in EFFDN under DFTelecom is

selected

<used> Integer type value indicating the total number of used

locations in selected memory

<total> Integer type value indicating the total number of locations

in selected memory

Parameter Saving

NO_SAVE

Mode

Max Response

3 seconds

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.27 AT+CPBW Write Phonebook Entry AT+CPBW Write Phonebook Entry

Test Command

AT+CPBW=?

Response

TA returns location range supported by the current storage, the maximum

length of <number> field, supported number formats of the storage, and

the maximum length of <text> field.

+CPBW: (list of supported <index>s), <nlength>, (list of supported <type>s), <tlength>

OK

Parameters

See Write Command

Write Command

AT+CPBW=<inde

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Response

TA writes phone book entry in location number <index> in the current

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x>[,<number>,[<t ype>,[<text>]]]

phone book memory storage selected with +CPBS. Entry fields written are

phone number <number> (in the format <type>) and text <text> associated

with the number. If those fields are omitted, phone book entry is deleted. If

<index> is left out, but <number> is given, entry is written to the first free

location in the phone book.

OK

Parameters

<nlength> Max length of phone number <tlength> Max length of text for number <index> Location number <number> Phone number

<type> Type of number;

129 National number type

145 International number type

<text> String type (string should be included in quotation marks): text

for phone number in current TE character set specified by +CSCS.

Note: The following characters in <text> must be entered via the

escape sequence:

GSM char. Seq. Seq.(hex) Note

\ \5C 5C 35 43 (backslash)

" \22 5C 32 32 (string delimiter)

BSP \08 5C 30 38 (backspace)

NULL \00 5C 30 30 (GSM null)

‘0’ (GSM null) may cause problems for application layer software

when reading string lengths.

Parameter Saving

NO_SAVE

Mode

Max Response

3 seconds

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.28 AT+CPIN Enter PIN AT+CPIN Enter PIN

Test Command

AT+CPIN=?

Read Command

AT+CPIN?

Response

OK

Response

TA returns an alphanumeric string indicating whether some password is

required or not.

+CPIN: <code>

OK

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Parameters

<code>

READY MT is not pending for any password

SIM PIN MT is waiting SIM PIN to be given

SIM PUK MT is waiting for SIM PUK to be given

PH_SIM PIN ME is waiting for phone to SIM card (antitheft)

PH_SIM PUK ME is waiting for SIM PUK (antitheft)

SIM PIN2 PIN2, e.g. for editing the FDN book possible only

if preceding Command was acknowledged with +CME

ERROR:17

SIM PUK2 Possible only if preceding Command was

acknowledged with error +CME ERROR: 18.

Write Command

AT+CPIN=<pin>[ ,<new pin>]

Response

TA stores a password which is necessary before it can be operated (SIM

PIN, SIM PUK, PH-SIM PIN, etc.).

If the PIN required is SIM PUK or SIM PUK2, the second pin is required.

This second pin, <new pin>, is used to replace the old pin in the SIM.

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<pin> String type; password <new pin> String type; If the PIN required is SIM PUK or SIMPUK2:

new password

Parameter Saving

NO_SAVE

Mode

Max Response

5s

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.29 AT+CPWD Change Password AT+CPWD Change Password

Test Command

AT+CPWD=?

Response

TA returns a list of pairs which present the available facilities and the

maximum length of their password.

+CPWD: (list of supported <fac>s, list of supported <pwdlength>s)

OK

Parameters

<fac> See Write Command <pwdlength> Integer max. length of password

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Write Command

AT+CPWD=<fac >,<oldpwd>,<new pwd>

Response

TA sets a new password for the facility lock function.

OK

Parameters

<fac>

"AO" BAOC (Barr All Outgoing Calls)

"OI" BOIC (Barr Outgoing International Calls)

"OX" BOIC-exHC (Barr Outgoing International Calls

except to Home Country)

"AI" BAIC (Barr All Incoming Calls)

"IR" BIC-Roam (Barr Incoming Calls when Roaming

outside the home country)

"AB" All Barring services

"P2" SIM PIN2

"SC" SIM (lock SIM/UICC card) (SIM/UICC asks password

in MT power-up and when this lock command issued) Correspond to PIN1

code.

<oldpwd> String type (string should be included in quotation marks):

password specified for the facility from the user interface or with

command. If an old password has not yet been set, <oldpwd> is not to

enter.

<newpwd> String type (string should be included in quotation marks):

new password

Parameter Saving

NO_SAVE

Mode

Max Response

15s

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.30 AT+CR Service Reporting Control

AT+CR Service Reporting Control

Test Command

AT+CR=?

Response

+CR: (list of supported <mode>s)

OK

Parameters

See Write Command

Read Command

AT+CR?

Response

+CR: <mode>

OK

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Parameters

See Write Command

Write Command

AT+CR=[<mode >]

Response

TA controls whether or not intermediate result code +CR: <serv> is

returned from the TA to the TE at a call set up.

OK

Parameters

<mode> 0 Disable

1 Enable

Intermediate result code

If enabled, an intermediate result code is transmitted at the point during

connect negotiation at which the TA has determined which speed and

quality of service will be used, before any error control or data

compression reports are transmitted, and before any final result code (e.g.

CONNECT) is transmitted.

+CR:<serv>

Parameters

<serv> ASYNC Asynchronous transparent

SYNC Synchronous transparent

REL ASYNC Asynchronous non-transparent

REL SYNC Synchronous non-transparent

GPRS For GPRS

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.31 AT+CRC Set Cellular Result Codes for Incoming Call Indication

AT+CRC Set Cellular Result Codes for Incoming Call Indication

Test Command

AT+CRC=?

Response

+CRC: (list of supported <mode>s)

OK

Parameters

See Write Command

Read Command

AT+CRC?

Response

+CRC: <mode>

OK

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Parameters

See Write Command

Write Command

AT+CRC=[<mod e>]

Parameter Saving

Mode

Response

TA controls whether or not the extended format of incoming call

indication is used.

OK

Parameters

<mode> 0 Disable extended format

1 Enable extended format

Omitted Use previous value

Unsolicited Result Code

When enabled, an incoming call is indicated to the TE with unsolicited

result code +CRING: <type> instead of the normal RING.

Parameters

<type> ASYNC Asynchronous transparent

SYNC Synchronous transparent

REL ASYNC Asynchronous non-transparent

REL SYNC Synchronous non-transparent

FAX Facsimile

VOICE Voice

NO_SAVE

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.32 AT+CREG Network Registration

AT+CREG Network Registration

Test Command

AT+CREG=?

Response

+CREG: (list of supported <n>s)

OK

Parameters

See Write Command

Read Command

AT+CREG?

Response

TA returns the status of result code presentation and an integer <stat>

which shows whether the network has currently indicated the registration

of the ME. Location information elements <lac> and <ci> are returned

only when <n>=2 and ME is registered in the network.

+CREG: <n>,<stat>[,<lac>,<ci>]

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OK

If error is related to ME functionality:

+CME ERROR: <err>

Write Command

AT+CREG=[<n> ]

Response

TA controls the presentation of an unsolicited result code +CREG: <stat>

when <n>=1 and there is a change in the ME network registration status.

OK

Parameters

<n> 0 Disable network registration unsolicited result code

1 Enable network registration unsolicited result code

+CREG: <stat>

2 Enable network registration unsolicited result code with

location information +CREG: <stat>[,<lac>,<ci>]

<stat> 0 Not registered, MT is not currently searching a new

operator to register to

1 Registered, home network

2 Not registered, but MT is currently searching a new

operator to register to

3 Registration denied

4 Unknown

5 Registered, roaming

<lac> String type (string should be included in quotation marks);

two byte location area code in hexadecimal format

<ci> String type (string should be included in quotation marks);

two byte cell ID in hexadecimal format

Parameter Saving

Mode

Max Response

Time

Reference

3GPP TS 27.007

[13]

Unsolicited Result Code

If <n>=1 and there is a change in the MT network registration status

+CREG: <stat>

If <n>=2 and there is a change in the MT network registration status or a

change of the network cell:

+CREG: <stat>[,<lac>,<ci>]

Parameters

See Write Command

AT&W_SAVE

-

Note

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3.2.33 AT+CRLP Select Radio Link Protocol Parameters

AT+CRLP Select Radio Link Protocol Parameters

Test Command

AT+CRLP=?

Read Command

AT+CRLP?

Write Command

AT+CRLP=<iws >[,<mws>[,<T1>[ ,<N2>[,<T4>]]]]

Response

TA returns values supported. RLP versions 0 and 1 share the same

parameter set.

+CRLP: (list of supported <iws>s),(list of supported <mws>s),(list of supported <T1>s),(list of supported <N2>s),(list of supported <T4>s)

OK

Parameters

See Write Command

Response

TA returns current settings for RLP version. RLP versions 0 and 1 share

the same parameter set.

+CRLP: <iws>,<mws>,<T1>,<N2>,<T4>

OK

Parameters

See Write Command

Response

TA sets radio link protocol (RLP) parameters used when non-transparent

data calls are setup.

OK

Parameters

<iws> 0-61 Interworking window size (IWF to MS) <mws> 0-61 Mobile window size(MS to IWF) <T1> 44-255 Acknowledgment timer T1 in 10 ms units <N2> 1-255 Retransmission attempts N2 <T4> 7 Re-sequencing period in integer format, in units of 10 ms.

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

Simcom redefine param`s value range

3GPP TS 27.007

[13]

3.2.34 AT+CRSM Restricted SIM Access

AT+CRSM Restricted SIM Access

Test Command

AT+CRSM=?

Response

OK

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Write Command

AT+CRSM=<Co mmand>[,<fileId >[,<P1>,<P2>,<P 3>[,<data>]]]

Response

+CRSM: <sw1>, <sw2>[,<response>]

OK ERROR

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

176 READ BINARY

178 READ RECORD

192 GET RESPONSE

214 UPDATE BINARY

220 UPDATE RECORD

242 STATUS

All other values are reserved; refer GSM 11.11.

<fileId> Integer type; this is the identifier for an elementary data file on

SIM. Mandatory for every Command except STATUS

<P1>,<P2>,<P3> Integer type, range 0 – 255

Parameters to be passed on by the ME to the SIM; refer GSM

11.11.

<data> Information which shall be written to the SIM (hex-decimal

character format)

<sw1>, <sw2> Integer type, range 0 - 255

Status information from the SIM about the execution of the

actual Command. These parameters are delivered to the TE in

both cases, on successful or failed execution of the Command;

refer GSM 11.11.

<response> Response of a successful completion of the Command

previously issued (hexadecimal character format)

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

GSM 11.11

3.2.35 AT+CSQ Signal Quality Report

AT+CSQ Signal Quality Report

Test Command

AT+CSQ=?

Response

+CSQ: (list of supported <rssi>s),(list of supported <ber>s)

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OK

Execution

Command

AT+CSQ

Response

+CSQ: <rssi>,<ber>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Execution Command returns received signal strength indication <rssi>

and channel bit error rate <ber> from the ME. Test Command returns

values supported by the TA.

Parameters

<rssi>

0 -115 dBm or less

1 -111 dBm

2...30 -110... -54 dBm

31 -52 dBm or greater

99 not known or not detectable

<ber> (in percent):

0...7 As RXQUAL values in the table in GSM 05.08 [20]

subclause 7.2.4

99 Not known or not detectable

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.36 AT+VTD Tone Duration

AT+VTD Tone Duration

Test Command

AT+VTD=?

Response

+VTD: (list of supported <n>s)

OK

Parameters

See Write Command

Read Command

AT+VTD?

Response

+VTD: <n>

OK

Parameters

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See Write Command

Write Command

AT+VTD=<n>

Response

This command refers to an integer <n> that defines the length of tones

emitted as a result of the +VTS command. This does not affect the D

command.

OK

Parameters

<n> 1-255 Duration of the tone in 1/10 seconds

Parameter Saving

AT&W_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.37 AT+VTS DTMF and Tone Generation

AT+VTS DTMF and Tone Generation

Test Command

AT+VTS=?

Response

+VTS: (list of supported <dtmf>s),(list of supported <duration>s)

OK

Parameters

See Write Command

Write Command

Generate tone

Duration is set by

+VTD

AT+VTS=<dtmfstring>

Response

This Command allows the transmission of DTMF tones and arbitrary

tones in voice mode. These tones may be used (for example) when

announcing the start of a recording period.

Note: D is used only for dialing.

OK

If error is related to ME functionality:

+CME ERROR: <err>

Note: The Command is writing only.

Parameters

<dtmf-string> Which has a max length of 20 characters, must be entered

between double quotes ("") and consists of combinations of the following

separated by commas. But a single character does not require quotes.

1) <dtmf> A single ASCII characters in the set 0-9, #,*, A-D.

This is interpreted as a sequence of DTMF tones whose duration

is set by the +VTD Command.

2) {<dtmf>, <duration>} This is interpreted as a DTMF tone

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whose duration is determined by <duration>.

<duration> Duration of the tone in 1/10 seconds range :1-255

Parameter Saving

NO_SAVE

Mode

Max Response

Number of DTMF characters*duration.

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.38 AT+CMUX Multiplexer Control

AT+CMUX Multiplexer Control

Test Command

AT+CMUX=?

Response

+CMUX: (0)

OK

Parameters

See Write Command

Read Command

AT+CMUX?

Response:

+CMUX:[<mode>[,<subset>[,<port_speed>[,<N1>[,<T1>[,<N2>[,<T2 >[,<T3>[,<k>]]]]]]]]]

OK ERROR

Parameters

<mode> Multiplexer transparency mechanism

0 Basic option

<subset> The way in which the multiplexer control channel is set up

0 UIH frames used only

<port_speed> Transmission rate

1 9600 bits/t

2 19200 bits/t

3 38400 bits/t

4 57600 bits/t

5 115200 bit/s

6 230400 bits/t

7 460800 bits/t

Proprietary values, available if MUX NEW PORT

SPEED FTR is activated

<N1> Maximum frame size

1-255 Default: 127

<T1> Acknowledgement timer in units of ten milliseconds

1-255 Default:10 (100 ms)

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<N2> Maximum number of re-transmissions

0-100 Default:3

<T2> Max Response Timer for the multiplexer control channel in

units of ten milliseconds

2-255 Default:30

<T3> Wake up Max Response Timers in seconds

1-255 Default:10

<k> Window size, for Advanced operation with Error Recovery

options

1-7 Default:2

Write Command

AT+CMUX=<mo de>

Response

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<mode> Multiplexer transparency mechanism

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

[13]

Note

The multiplexing transmission rate is according to the current serial baud

rate. It is recommended to enable multiplexing protocol under 115200

bit/s baud rate

Multiplexer control channels are listed as follows:

Channel Number Type DLCI

None Multiplexer Control 0

1 3GPP TS 27.007 and 005 1

2 3GPP TS 27.007 and 005 2

3 3GPP TS 27.007 and 005 3

4 3GPP TS 27.007 and 005 4

0 Basic option

3.2.39 AT+CNUM Subscriber Number

AT+CNUM Subscriber Number

Test Command

AT+CNUM=?

Execution

Command

AT+CNUM

Response

OK

Response

+CNUM: [<alpha1>],<number1>,<type1>[,<speed>,<service>] [<CR><LF>+CNUM:[<alpha2>],<number2>,<type2>[,<speed>,<serv ice>] [...]]

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OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<alphax> Optional alphanumeric string associated with <numberx>;

used character set should be the one selected with Command Select TE

Character Set +CSCS

<numberx> String type (string should be included in quotation marks) phone number of format specified by <typex> <typex> Type of address octet in integer format (refer GSM04.08[8]

subclause 10.5.4.7)

<speed> As defined by the +CBST Command <service> (service related to the phone number:)

0 Asynchronous modem

1 Synchronous modem

2 PAD Access (asynchronous)

3 Packet Access (synchronous)

4 Voice

5 Fax

Parameter Saving

NO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.40 AT+CPOL Preferred Operator List

AT+CPOL Preferred Operator List

Test Command

AT+CPOL=?

Response

+CPOL: (list of supported <index>s),(list of supported <format>s)

OK

Parameters

See Write Command

Read Command

AT+CPOL?

Response

+CPOL: <index1>,<format>,<oper1> [<CR><LF>+CPOL: <index2>,<format>,<oper2>[…]]

OK

If error is related to ME functionality:

+CME ERROR: <err>

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Parameters

See Write Command

Write Command

AT+CPOL=<ind ex>[,<format>,<o per>]

Response

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<index> Integer type: order number of operator in SIM preferred

operator list

<format> Indicates whether alphanumeric or numeric

format used (see +COPS Command)

1 Short format alphanumeric <oper>

2 Numeric <oper>

<oper> String type(string should be included in quotation marks)

Parameter Saving

AUTO_SAVE

Mode

Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

0 Long format alphanumeric <oper>

3.2.41 AT+COPN Read Operator Names

AT+COPN Read Operator Names

Test Command

AT+COPN=?

Execution

Command

AT+COPN

Response

OK

Response

+COPN: <numeric1>,<alpha1> [<CR><LF>+COPN: <numeric2>,<alpha2> […]]

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<numericn> String type (string should be included in quotation marks):

operator in numeric format (see +COPS)

<alphan> String type (string should be included in quotation marks):

operator in long alphanumeric format (see +COPS)

Parameter Saving

NO_SAVE

Mode

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Max Response

-

Time

Reference

3GPP TS 27.007

Note

[13]

3.2.42 AT+CFUN Set Phone Functionality

AT+CFUN Set Phone Functionality

Test Command

AT+CFUN=?

Response

+CFUN: (list of supported <fun>s),(list of supported <rst>s)

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

See Write Command

Read Command

AT+CFUN?

Response

+CFUN: <fun>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

See Write Command

Write Command

AT+CFUN=<fun >[,<rst>]

Response

OK

If error is related to ME functionality:

+CME ERROR: <err>

Parameters

<fun> 0 Minimum functionality

<rst> 1

Parameter Saving

AUTO_SAVE

Mode

Max Response

10s

Time

Reference

3GPP TS 27.007

[13]

Note

Minimum functionality mode (AT+CFUN=0)and RF disabled

functionality mode (AT+CFUN=4) cannot be switched to each other.

The <fun> power level will be written to flash except minimum

functionality.

1 Full functionality (Default)

4 Disable phone both transmit and receive RF circuits.

Reset the MT before setting it to <fun> power level.

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