Quectel M35 Command Manual

M35

AT Commands Manual

GSM/GPRS Module Series

Rev. M35_AT_Commands_Manual_V1.0

Date: 2013-07-11

www.quectel.com

M35

GSM/GPRS Module

AT Commands Manual

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Revision

Date

Author

Description

1.0

2013-07-11

Bonnie ZHAO

Initial

Quectel

Confidential

M35 AT Commands Manual

GSM/GPRS Module

About the Document

History

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Contents

About the document ................................................................................................................................... 3

Contents ....................................................................................................................................................... 4

Table Index ................................................................................................................................................. 10

1 Introduction ........................................................................................................................................ 11

1.1. Scope of the Document ........................................................................................................... 11

1.2. AT Command Syntax ............................................................................................................... 11

1.2.1. Combining AT Commands on the Same Command Line .............................................. 12

1.2.2. Entering Successive AT Commands on Separate Lines ............................................... 12

1.3. Supported Character Sets ....................................................................................................... 12

1.4. Flow Control ............................................................................................................................. 13

1.4.1. Software Flow Control (XON/XOFF Flow Control) ........................................................ 13

1.4.2. Hardware Flow Control (RTS/CTS Flow Control) .......................................................... 14

1.5. Unsolicited Result Code .......................................................................................................... 14

2 General Commands ........................................................................................................................... 15

2.1. ATI Display Product Identification Information ...................................................................... 15

2.2. AT+GMI Request Manufacture Identification ........................................................................ 15

2.3. AT+GMM Request TA Model Identification ........................................................................... 16

2.4. AT+GMR Request TA Revision Identification of Software Release ..................................... 16

2.5. AT+GOI Request Global Object Identification ...................................................................... 17

2.6. AT+CGMI Request Manufacturer Identification .................................................................... 17

2.7. AT+CGMM Request Model Identification ............................................................................. 18

2.8. AT+CGMR Request TA Revision Identification of Software Release ..................................... 18

2.9. AT+GSN Request International Mobile Equipment Identity (IMEI) ...................................... 19

2.10. AT+CGSN Request Product Serial Number Identification ................................................... 19

2.11. AT&F Set all Current Parameters to Manufacturer Defaults ................................................ 20

2.12. AT&V Display Current Configuration .................................................................................... 20

2.13. AT&W Store Current Parameter to User Defined Profile ...................................................... 22

2.14. ATQ Set Result Code Presentation Mode ............................................................................ 22

2.15. ATV TA Response Format .................................................................................................... 23

2.16. ATX Set CONNECT Result Code Format and Monitor Call Progress ................................. 25

2.17. ATZ Set all Current Parameters to User Defined Profile ...................................................... 25

2.18. AT+CFUN Set Phone Functionality ...................................................................................... 26

2.19. AT+QPOWD Power off ......................................................................................................... 27

2.20. AT+CMEE Report Mobile Equipment Error .......................................................................... 28

2.21. AT+CSCS Select TE Character Set ...................................................................................... 29

2.22. AT+GCAP Request Complete TA Capabilities List ............................................................... 30

3 Serial Interface Control Commands ................................................................................................ 31

3.1. AT&C Set DCD Function Mode ............................................................................................ 31

3.2. AT&D Set DTR Function Mode ............................................................................................. 31

3.3. AT+ICF Set TE-TA Control Character Framing .................................................................... 32

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3.4. AT+IFC Set TE-TA Local Data Flow Control ......................................................................... 33

3.5. AT+ILRR Set TE-TA Local Data Rate Reporting Mode ........................................................ 34

3.6. AT+IPR Set TE-TA Fixed Local Rate .................................................................................... 35

3.6.1. Adaptive Baud ................................................................................................................ 36

3.7. AT+CMUX Multiplexer Control .............................................................................................. 37

4 Status Control Commands ............................................................................................................... 38

4.1. AT+CEER Extended Error Report ........................................................................................ 38

4.2. AT+CPAS Mobile Equipment Activity Status ......................................................................... 39

4.3. AT+QINDRI Indicate RI when Using URC ............................................................................ 40

4.4. AT+QMOSTAT Show State of Mobile Originated Call .......................................................... 41

4.5. AT+QIURC Enable or Disable Initial URC Presentation ....................................................... 41

4.6. AT+QEXTUNSOL Enable/Disable Proprietary Unsolicited Indications ................................ 42

4.7. AT+QINISTAT Query State of Initialization ........................................................................... 44

4.8. AT+QNSTATUS Query GSM Network Status ....................................................................... 44

4.9. AT+QSIMDET Switch on or off Detecting SIM Card............................................................. 45

5 SIM Related Commands .................................................................................................................... 46

5.1. AT+CIMI Request International Mobile Subscriber Identity (IMSI) ....................................... 46

5.2. AT+CLCK Facility Lock ......................................................................................................... 46

5.3. AT+CPIN Enter PIN .............................................................................................................. 48

5.4. AT+CPWD Change Password .............................................................................................. 49

5.5. AT+CRSM Restricted SIM Access ........................................................................................ 51

5.6. AT+CSIM Generic SIM Access ............................................................................................. 53

5.7. AT+QCSPWD Change PS Super Password ........................................................................ 53

5.8. AT+QCCID Show ICCID ....................................................................................................... 54

5.9. AT+QGID Get SIM Card Group Identifier ............................................................................. 54

5.10. AT+QSIMVOL Select SIM Card Operating Voltage .............................................................. 55

6 Network Service Commands ............................................................................................................ 56

6.1. AT+COPS Operator Selection .............................................................................................. 56

6.2. AT+CREG Network Registration ........................................................................................... 57

6.3. AT+CSQ Signal Quality Report ............................................................................................. 59

6.4. AT+CPOL Preferred Operator List ........................................................................................ 60

6.5. AT+COPN Read Operator Names ........................................................................................ 61

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6.6. AT+QBAND Get and Set Mobile Operation Band ................................................................ 61

7 Call Related Commands .................................................................................................................... 63

7.1. ATA Answer an Incoming Call ............................................................................................... 63

7.2. ATD Mobile Originated Call to Dial a Number ...................................................................... 64

7.3. ATH Disconnect Existing Connection ................................................................................... 65

7.4. +++ Switch From Data Mode to Command Mode ................................................................ 66

7.5. ATO Switch from Command Mode to Data Mode ................................................................ 67

7.6. ATP Select Pulse Dialing ...................................................................................................... 67

7.7. ATS0 Set Number of Rings before Automatically Answering Call ........................................ 68

7.8. ATS6 Set Pause before Blind Dialing ................................................................................... 68

7.9. ATS7 Set Number of Seconds to Wait for Connection Completion ........................................ 69

7.10. ATS8 Set the Number of Seconds to Wait for Comma Dial Modifier ................................... 70

7.11. ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier ......................... 70

7.12. ATT Select Tone Dialing ........................................................................................................ 71

7.13. AT+CBST Select Bearer Service Type ................................................................................. 71

7.14. AT+CSTA Select Type of Address ........................................................................................ 72

7.15. AT+CLCC List Current Calls of ME....................................................................................... 73

7.16. AT+CR Service Reporting Control ........................................................................................ 74

7.17. AT+CRC Set Cellular Result Codes for Incoming Call Indication ........................................ 75

7.18. AT+CRLP Select Radio Link Protocol Parameter ................................................................ 76

7.19. AT+CSNS Single Numbering Scheme ................................................................................. 77

7.20. AT+CMOD Configure Alternating Mode Calls....................................................................... 78

7.21. AT+QSFR Preference Speech Coding ................................................................................. 78

8 SMS Commands ................................................................................................................................. 80

8.1. AT+CSMS Select Message Service ..................................................................................... 80

8.2. AT+CMGF Select SMS Message Format ............................................................................. 81

8.3. AT+CSCA SMS Service Center Address .............................................................................. 81

8.4. AT+CPMS Preferred SMS Message Storage ....................................................................... 82

8.5. AT+CMGD Delete SMS Message ........................................................................................ ..84

8.6. AT+CMGL List SMS Messages from Preferred Store ........................................................ ..85

8.7. AT+CMGR Read SMS Message ........................................................................................ ..88

8.8. AT+CMGS Send SMS Message ......................................................................................... ..91

8.9. AT+CMGW Write SMS Message to Memory ...................................................................... ..92

8.10. AT+CMSS Send SMS Message from Storage ................................................................... ..93

8.11. AT+CMGC Send SMS Command ..........................................................................................94

8.12. AT+CNMI New SMS Message Indications ......................................................................... ..96

8.13. AT+CRES Restore SMS Settings ....................................................................................... ..98

8.14. AT+CSAS Save SMS Settings ............................................................................................ ..98

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8.15. AT+CSCB Select Cell Broadcast SMS Messages ............................................................. ..99

8.16. AT+CSDH Show SMS Text Mode Parameters ................................................................... 100

8.17. AT+CSMP Set SMS Text Mode Parameters ...................................................................... 101

8.18. AT+QCLASS0 Store Class 0 SMS to SIM when Receiving Class 0 SMS ......................... 102

8.19. AT+QMGDA Delete all SMS ............................................................................................... 103

8.20. AT+QSMSCODE Configure SMS Code Mode ................................................................... 104

9 Phonebook Commands ................................................................................................................... 105

9.1. AT+CPBS Select Phonebook Memory Storage .................................................................. 105

9.2. AT+CPBW Write Phonebook Entry ..................................................................................... 106

9.3. AT+CPBR Read Current Phonebook Entries ..................................................................... 107

9.4. AT+CPBF Find Phonebook Entries .................................................................................... 108

9.5. AT+CNUM Subscriber Number ........................................................................................... 109

10 GPRS Commands ............................................................................................................................ 111

10.1. AT+CGATT Attach to/Detach from GPRS Service ............................................................. 111

10.2. AT+CGDCONT Define PDP Context .................................................................................. 112

10.3. AT+CGQREQ Quality of Service Profile (Requested) ........................................................ 113

10.4. AT+CGQMIN Quality of Service Profile (Minimum Acceptable) ......................................... 114

10.5. AT+CGACT PDP Context Activate or Deactivate ............................................................... 115

10.6. AT+CGDATA Enter Data State ............................................................................................ 116

10.7. AT+CGPADDR Show PDP Address ................................................................................... 116

10.8. AT+CGCLASS GPRS Mobile Station Class ....................................................................... 117

10.9. AT+CGEREP Control Unsolicited GPRS Event Reporting ................................................ 118

10.10. AT+CGREG Network Registration Status ........................................................................... 119

10.11. AT+CGSMS Select Service for MO SMS Messages .......................................................... 120

10.12. AT+QGPCLASS Change GPRS Multi-slot Class ............................................................... 121

11 TCPIP Commands ............................................................................................................................ 123

11.1. AT+QIOPEN Start up TCP or UDP Connection .................................................................. 123

11.2. AT+QISEND Send Data through TCP or UDP Connection ................................................ 124

11.3. AT+QICLOSE Close TCP or UDP Connection ................................................................... 125

11.4. AT+QIDEACT Deactivate GPRS/CSD PDP Context ......................................................... 126

11.5. AT+QILPORT Set Local Port .............................................................................................. 127

11.6. AT+QIREGAPP Start TCPIP Task and Set APN, User Name and Password .................... 128

11.7. AT+QIACT Activate GPRS/CSD Context ........................................................................... 128

11.8. AT+QILOCIP Get Local IP Address .................................................................................... 129

11.9. AT+QISTAT Query Current Connection Status ................................................................... 130

11.10. AT+QISTATE Query Connection Status of the Current Access.......................................... 131

11.11. AT+QISSTAT Query the Current Server Status .................................................................. 133

11.12. AT+QIDNSCFG Configure Domain Name Server .............................................................. 133

11.13. AT+QIDNSGIP Query the IP Address of Given Domain Name .......................................... 134

11.14. AT+QIDNSIP Connect with IP Address or Domain Name Server ...................................... 135

11.15. AT+QIHEAD Add an IP Header when Receiving Data ....................................................... 135

11.16. AT+QIAUTOS Set Auto Sending Timer .............................................................................. 136

11.17. AT+QIPROMPT Set Prompt of „>‟ when Sending Data ...................................................... 137

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11.18. AT+QISERVER Configure as Server .................................................................................. 137

11.19. AT+QICSGP Select CSD or GPRS as the Bearer ............................................................. 139

11.20. AT+QISRVC Choose Connection ....................................................................................... 140

11.21. AT+QISHOWRA Set Whether or not to Display the Address of Sender ............................ 140

11.22. AT+QISCON Save TCPIP Application Context .................................................................. 141

11.23. AT+QIMODE Select TCPIP Transfer Mode ........................................................................ 143

11.24. AT+QITCFG Configure Transparent Transfer Mode .......................................................... 143

11.25. AT+QISHOWPT Control Whether or not to Show the Protocol Type ................................. 144

11.26. AT+QIMUX Control Whether or not to Enable Multiple TCPIP Session............................. 145

11.27. AT+QISHOWLA Control Whether or not to Display Local IP Address ............................... 146

11.28. AT+QIFGCNT Select a Context as Foreground Context.................................................... 146

11.29. AT+QISACK Query the Data Information for Sending ........................................................ 147

11.30. AT+QINDI Set the Method to Handle Received TCP/IP Data ............................................ 148

11.31. AT+QIRD Retrieve the Received TCP/IP Data ................................................................... 149

11.32. AT+QISDE Control Whether or Not to Echo the Data for QISEND .................................... 150

11.33. AT+QPING Ping a Remote Server ..................................................................................... 150

11.34. AT+QNTP Synchronize the Local Time Via NTP ................................................................ 152

12 Supplementary Service Commands .............................................................................................. 153

12.1. AT+CACM Accumulated Call Meter (ACM) Reset or Query .............................................. 153

12.2. AT+CAMM Accumulated Call Meter Maximum (ACM Max) Set or Query ......................... 154

12.3. AT+CAOC Advice of Charge .............................................................................................. 155

12.4. AT+CCFC Call Forwarding Number and Conditions Control ............................................. 156

12.5. AT+CCUG Closed User Group Control .............................................................................. 157

12.6. AT+CCWA Call Waiting Control .......................................................................................... 158

12.7. AT+CHLD Call Hold and Multiparty .................................................................................... 160

12.8. AT+CLIP Calling Line Identification Presentation ............................................................... 161

12.9. AT+CLIR Calling Line Identification Restriction .................................................................. 163

12.10. AT+COLP Connected Line Identification Presentation ....................................................... 164

12.11. AT+CPUC Price Per Unit and Currency Table .................................................................... 165

12.12. AT+CCWE Call Meter Maximum Event .............................................................................. 166

12.13. AT+CUSD Unstructured Supplementary Service Data ...................................................... 167

12.14. AT+CSSN Supplementary Services Notification ................................................................ 168

13 Audio Commands ............................................................................................................................ 169

13.1. ATL Set Monitor Speaker Loudness ................................................................................... 169

13.2. ATM Set Monitor Speaker Mode ......................................................................................... 169

13.3. AT+VTD Tone Duration ....................................................................................................... 170

13.4. AT+VTS DTMF and Tone Generation ................................................................................. 171

13.5. AT+CALM Alert Sound Mode .............................................................................................. 172

13.6. AT+CRSL Ringer Sound Level ........................................................................................... 172

13.7. AT+CLVL Loud Speaker Volume Level ............................................................................... 173

13.8. AT+CMUT Mute Control ...................................................................................................... 173

13.9. AT+QSIDET Change the Side Tone Gain Level ................................................................. 174

13.10. AT+QMIC Change the Microphone Gain Level .................................................................. 175

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14 Hardware Related Commands ........................................................................................................ 176

14.1. AT+CCLK Clock .................................................................................................................. 176

14.2. AT+CBC Battery Charge ..................................................................................................... 177

14.3. AT+QTEMP Set Temperature Detection Mode or Query Temperature .............................. 178

14.4. AT+QSCLK Configure Slow Clock ...................................................................................... 179

15 Others Commands ........................................................................................................................... 180

15.1. A/ Re-issues the Last Command Given ............................................................................. 180

15.2. ATE Set Command Echo Mode .......................................................................................... 180

15.3. ATS3 Set Command Line Termination Character ............................................................... 181

15.4. ATS4 Set Response Formatting Character ........................................................................ 181

15.5. ATS5 Set Command Line Editing Character ...................................................................... 182

15.6. AT+DS V.42bis Data Compression Control ........................................................................ 182

15.7. AT+DR V.42bis Data Compression Reporting Control ....................................................... 183

15.8. AT+QRIMODE Set RI Time ................................................................................................ 184

16 Appendix A Reference ..................................................................................................................... 186

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Table Index

TABLE 1: TYPES OF AT COMMANDS AND RESPONSES ............................................................................. 12

TABLE 2: AT&V DISPLAY CURRENT CONFIGURATION LIST ....................................................................... 21

TABLE 3: RELATED DOCUMENTS ................................................................................................................ 212

TABLE 4: TERMS AND ABBREVIATIONS ...................................................................................................... 212

TABLE 5: FACTORY DEFAULT SETTINGS RESTORABLE WITH AT&F ...................................................... 214

TABLE 6: AT COMMAND SETTINGS STORABLE WITH AT&W .................................................................... 216

TABLE 7: AT COMMAND SETTINGS STORABLE WITH ATZ ....................................................................... 219

TABLE 8: DIFFERENT CODING SCHEMES OF +CME ERROR : <ERR> .................................................... 221

TABLE 9: DIFFERENT CODING SCHEMES OF +CMS ERROR : <ERR> .................................................... 225

TABLE 10: LOCATION ID FOR THE EXTENDED ERROR REPORT ............................................................ 227

TABLE 11: CAUSE FOR PROTOCOL STACK (PS) LAYER ........................................................................... 227

TABLE 12: INTERNAL CAUSE FOR MM LAYER ........................................................................................... 239

TABLE 13: CAUSE FOR PPP/IP-STACK ........................................................................................................ 240

TABLE 14: SUMMARY OF URC ..................................................................................................................... 241

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AT Commands Manual

1

Introduction

1.1. Scope of the Document

This document presents the AT Commands Set for Quectel cellular engine M35.

1.2. AT Command Syntax

The “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 Commands Set implemented by M85 is a combination of GSM07.05, GSM07.07 and ITU-T
recommendation V.25ter and the AT Commands developed by Quectel.

All these AT Commands can be split into three categories syntactically: “basic”, “S parameter”, and
“extended”. They are listed as follows:

 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 it is missing.

 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.

 Extended syntax
These commands can be operated in several modes, as following table:

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Test Command

AT+<x>=?

This command returns the list of parameters and value ranges
set by the corresponding Write Command or 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>

This command reads non-variable parameters affected by
internal processes in the GSM engine

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” at the beginning of the

command line. Please note that use a semicolon as command delimiter.

The command line buffer can accept a maximum of 256 characters. If the input characters exceeded the
maximum then no command will be executed and TA will return “ERROR”.

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 the last AT command you entered before
you enter the next AT command.

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Table 1: Types of AT Commands and Responses

1.2.1. Combining AT Commands on the Same Command Line

1.2.2. Entering Successive AT Commands on Separate Lines

1.3. Supported Character Sets

The M35 AT Command interface defaults to the IRA character set. The M35 supports the following
character sets:

 GSM
 UCS2
 HEX
 IRA
 PCCP437
 8859_1

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Software Flow Control should not be used for data calls where binary data will be transmitted or received
(e.g. TCP/IP), because the DTE interface may interpret binary data as flow control characters.

The character set can be configured and interrogated using the “AT+CSCS” command (GSM 07.07). The

character set is defined in GSM specification 07.05. 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.

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

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

The default f

NOTE

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1.4. Flow Control

control. M35 supports both two kinds of flow control.

low control approach of M35 is closed.

1.4.1. 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 serial interface.

The default flow control approach of M35 is closed, to enable software flow control in the DTE interface

and within GSM engine, type the following AT command:
AT+IFC=1, 1<CR>

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

Ensure that any communication software package (e.g. ProComm Plus, Hyper Terminal or WinFax Pro)
uses software flow control.

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1.4.2. Hardware Flow Control (RTS/CTS Flow Control)

The default flow control approach of M3 is closed, to enable hardware flow control (RTS/CTS flow
control) in the DTE interface and within GSM engine, type the following AT command:
AT+IFC=2, 2<CR>.

This setting is stored volatile, for use after restart, AT+IFC=2, 2<CR> should be stored to the user profile
with AT&W<CR>.

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.

1.5. Unsolicited Result Code

A URC is a report message sent from the ME to the TE. An unsolicited result code can either be delivered
automatically when an event occurs, to reflect change in system state or as a result of a query the ME
received before, often due to occurrences of errors in executing the queries. However, a URC is not
issued as a direct response to an executed AT command. AT commands have their own implementations
to validate inputs such as “OK” or “ERROR”.

Typical URCs may be information about incoming calls, received SMS, changing temperature, status of
the battery etc. A summary of URCs is listed in Appendix A.

When sending a URC, the ME activates its Ring Interrupt (Logic “l”), i.e. the line goes active low for a few

milliseconds. If an event which delivers a URC coincides with the execution of an AT command, the URC
will be output after command execution has completed.

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ATI Display Product Identification Information

Execution Command

ATI

Response
TA issues product information text

Quectel_Ltd

Quectel_

Revision: M85EARxxAxxW64

OK

Reference

V.25ter

AT+GMI Request Manufacture Identification

Test Command

AT+GMI=?

Response

OK

Execution Command

AT+GMI

Response
TA reports one or more lines of information text which permit
the user to identify the manufacturer.

Quectel_Ltd

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2

General Commands

2.1. ATI Display Product Identification Information

M35

Example

ATI

Quectel_Ltd
Quectel_M35

Revision: M85EAR21A01W64

OK

2.2. AT+GMI Request Manufacture Identification

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Revision: MTK 1132

OK

Reference

V.25ter

AT+GMM Request TA Model Identification

Test Command

AT+GMM=?

Response

OK

Execution Command

AT+GMM

Response
TA returns a product model identification text.

OK

Reference

V.25ter

AT+GMR Request TA Revision Identification of Software Release

Test Command

AT+GMR=?

Response

OK

Execution Command

AT+GMR

Response
TA reports one or more lines of information text which permit
the user to identify the revision of software release.

Revision: <revision>

OK

Reference

V.25ter

<revision> Revision of software release

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2.3. AT+GMM Request TA Model Identification

Quectel_M35

2.4. AT+GMR Request TA Revision Identification of Software Release

Parameter

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displayed.

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.

<Object Id>

OK

Reference

V.25ter

<Object Id> Identifier of device type

AT+CGMI Request Manufacture Identification

Test Command

AT+CGMI=?

Response

OK

Execution Command

Response

NOTE

M35 AT Commands Manual

GSM/GPRS Module

Example

AT+GMR

Revision: M85EAR21A01W64

OK

2.5. AT+GOI Request Global Object Identification

Parameter

See X.208, 209 for the format of <Object Id>. For example, in M35 wireless module, string “M35” is

2.6. AT+CGMI Request Manufacturer Identification

M35_AT_Commands_Manual Confidential / Released 17 / 186

AT+CGMI

TA returns manufacturer identification text.

Quectel_Ltd

Revision: MTK 1132

OK

Reference

GSM 07.07

AT+CGMM Request Model Identification

Test Command

AT+CGMM=?

Response

OK

Execution Command

AT+CGMM

Response
TA returns product model identification text.

<model>

OK

Reference

GSM 07.07

<model> Product model identification text

AT+CGMR Request TA Revision Identification of Software Release

Test Command

AT+CGMR=?

Response

OK

Execution Command

AT+CGMR

Response
TA returns product software version identification text.

Revision: <revision>

OK

Reference

GSM 07.07

M35 AT Commands Manual

Quectel_M35

GSM/GPRS Module

2.7. AT+CGMM Request Model Identification

Parameter

2.8. AT+CGMR Request TA Revision Identification of Software Release

M35_AT_Commands_Manual Confidential / Released 18 /

186

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

<revision> Product software version identification text

AT+GSN Request International Mobile Equipment Identity (IMEI)

Test Command

AT+GSN=?

Response

OK

Execution Command

AT+GSN

Response
TA reports the IMEI (International Mobile Equipment Identity)
number in information text which permit the user to identify
the individual ME device.

<sn>

OK

Reference

V.25ter

<sn> IMEI of the telephone

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

Test Command

AT+CGSN=?

Response

OK

Execution Command

AT+CGSN

Response

<sn>

OK

NOTE

M35 AT Commands Manual

GSM/GPRS Module

Parameter

2.9. AT+GSN Request International Mobile Equipment Identity (IMEI)

Parameter

2.10. AT+CGSN Request Product Serial Number Identification

M35

_AT_Commands_Manual Confidential / Released 19 / 186

See AT+GSN.

Reference

GSM 07.07

AT&F Set all Current Parameters to Manufacturer Defaults

Execution Command

AT&F[<value>]

Response
TA sets all current parameters to the manufacturer defined
profile.
OK

Reference

V.25ter

<value> 0 Set all TA parameters to manufacturer defaults

AT&V Display Current Configuration

Execution Command

AT&V[<n>]

Response
TA returns the current parameter setting.

ACTIVE PROFILE

<current configurations text>
OK

Reference

V.25ter

<n> 0 Profile number

NOTE

M35 AT Commands Manual

GSM/GPRS Module

2.11. AT&F Set all Current Parameters to Manufacturer Defaults

Parameter

2.12. AT&V Display Current Configuration

Parameter

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M35 AT Commands Manual

AT&V or AT&V0

AT&V
ACTIVE PROFILE
E: 1
Q: 0
V: 1
X: 4
S0: 0
S2: 43
S3: 13
S4: 10
S5: 8
S6: 2
S7: 60
S8: 2
S10: 15
+CR: 0
+FCLASS: 0
+CMGF: 0
+CSDH: 0
+ILRR: 0
+CMEE: 1
+CBST: 7,0,1
+IFC: 0,0
+ICF: 3,3
+CNMI: 2,1,0,0,0
+CSCS: "GSM"
+IPR: 0
&C: 1
&D: 0
+CSTA: 129
+CRLP: 61,61,128,6,0,3
+CCWE: 0
+QSIMSTAT: 0
+CMUX: -1
+CCUG: 0,0,0
+CLIP: 0
+COLP: 0
+CCWA: 0
+CAOC: 1
+CLIR: 0
+CUSD: 0

Table 2: AT&V Display Current Configuration List

M35_AT_Commands_Manual Confidential / Released 21 / 186

GSM/GPRS Module

+CREG: 0
+QSIMDET: 0,0
+QMIC: 4,9,8
+QECHO(NORMAL_AUDIO): 253,96,16388,57351,0
+QECHO(Earphone_AUDIO): 253,0,10756,57351,1
+QECHO(LoudSpk_AUDIO): 224,96,5256,57351,2
+QSIDET(NORMAL_AUDIO): 80
+QSIDET(HEADSET_AUDIO): 144
+QCLIP: 0
+QCOLP: 0
+CSNS: 0

OK

The profile defined by user is stored in non volatile memory.

AT&W Store Current Parameter to User Defined Profile

Execution Command

AT&W[<n>]

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

Reference

V.25ter

<n> 0 Profile number to store to

ATQ Set Result Code Presentation Mode

Execution Command

ATQ<n>

Response
This parameter setting determines whether or not the TA

NOTE

M35 AT Commands Manual

GSM/GPRS Module

2.13. AT&W Store Current Parameter to User Defined Profile

Parameter

2.14. ATQ Set Result Code Presentation Mode

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The result codes, their numeric equivalents and brief descriptions of the use of each are listed in the
following table.

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)

Reference

V.25ter

<n> 0 TA transmits result code
1 Result codes are suppressed and not transmitted

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

Reference

V.25ter

<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><CR><LF>

NOTE

M35 AT Commands Manual

GSM/GPRS Module

Parameter

2.15. ATV TA Response Format

Parameter

M35_AT_Commands_Manual Confidential / Released 23 / 186

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

GSM/GPRS Module

M35 AT Commands Manual

Example

ATV1 // Set <value>=1

OK

AT+CSQ

+CSQ: 30,0

OK // When <value>=1 result code is OK

ATV0 // Set <value>=0

0

AT+CSQ

+CSQ: 30,0
0 // When <value>=0 result code is 0

Table 3: ATV0&ATV1 Result Codes Numeric Equivalents and Brief Descriptions

M35_AT_Commands_Manual Confidential / Released 24 / 186

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

Reference

V.25ter

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

busy 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

ATZ Set all Current Parameters to User Defined Profile

Execution Command

ATZ[<value>]

Response
TA sets all current parameters to the user defined profile.
OK

Reference

V.25ter

<value> 0 Reset to profile number 0

M35 AT Commands Manual

GSM/GPRS Module

2.16. ATX Set CONNECT Result Code Format and Monitor Call Progress

Parameter

2.17. ATZ Set all Current Parameters to User Defined Profile

Parameter

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1. Profile defined by user is stored in non volatile memory.

2. If the user profile is invalid, it will default to the factory default profile.

3. Any additional commands on the same command line are ignored.

AT+CFUN Set Phone Functionality

Test Command

AT+CFUN=?

Response

+CFUN: (list of supported <fun>s), (list of supported <rst>s)

OK

Read Command

AT+CFUN?

Response

+CFUN: <fun>

OK

Write Command

AT+CFUN=<fun>[,<rst>]

Response

OK

If error is related to ME functionality:

+CME ERROR: <err>

Reference

GSM 07.07

<fun> 0 Minimum functionality

1 Full functionality (Default)

4 Disable phone both transmit and receive RF circuits
<rst> 0 Do not reset the ME before setting it to <fun> power level

This is default when <rst> is not given

1 Reset the ME before setting it to <fun> power level

NOTES

M35 AT Commands Manual

GSM/GPRS Module

2.18. AT+CFUN Set Phone Functionality

Parameter

Example

AT+CFUN=0 // Switch phone to minimum functionality

+CPIN: NOT READY

OK

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186

AT+QPOWD Power off

Write Command

AT+QPOWD=<n>

Response
When <n>=0

OK
When <n>=1
NORMAL POWER DOWN

Reference

<n> 0 Urgent power off ( Do not send out URC "NORMAL POWER DOWN")
1 Normal power off (Send out URC "NORMAL POWER DOWN")

GSM/GPRS Module

M35 AT Commands Manual

AT+COPS?

+COPS: 0 // No operator is registered

OK

AT+CPIN?

+CME ERROR: 13 // SIM failure

AT+CFUN=1 // Switch phone to full functionality

OK

+CPIN: SIM PIN

AT+CPIN=1234

+CPIN: READY

OK

Call Ready

AT+CPIN?

+CPIN: READY

OK

AT+COPS?

+COPS: 0,0,"CHINA MOBILE" // Operator is registered

OK

2.19. AT+QPOWD Power off

Parameter

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AT+CMEE Report Mobile Equipment Error

Test Command

AT+CMEE=?

Response

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

OK

Read Command

AT+CMEE?

Response

+CMEE: <n>

OK

Write Command

AT+CMEE=[<n>]

Response
TA disables or enables the use of result code +CME ERROR:
<err> as an indication of an error related to the functionality of
the ME.
OK

Reference
GSM 07.07

<n> 0 Disable result code
1 Enable result code and use numeric values

2 Enable result code and use verbose values

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+QPOWD=0

OK // Urgent power off, returned OK

AT+QPOWD=1

NORMAL POWER DOWN // Normal power off, send out URC”NORMAL

POWER DOWN”

2.20. AT+CMEE Report Mobile Equipment Error

Parameter

Example

AT+CMEE=0 // Disable result code

OK

AT+CPIN=1234

ERROR // Only “ERROR” will be displayed

AT+CMEE=1 // Enable error result code with numeric values

OK

AT+CPIN=1234

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AT+CSCS Select TE Character Set

Test Command

AT+CSCS=?

Response

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

OK

Read Command

AT+CSCS?

Response

+CSCS: <chset>

OK

Write Command

AT+CSCS=<chset>

Response
Set character set <chset> which is used by the TE. The TA
can then convert character strings correctly between the TE
and ME character sets.
OK

Reference
GSM 07.07

<chset> "GSM" GSM default alphabet
"HEX" Character strings consist only of hexadecimal numbers from 00 to FF
"IRA" International reference alphabet
"PCCP437" PC character set Code
"UCS2" UCS2 alphabet

"8859-1" ISO 8859 Latin 1 character set

GSM/GPRS Module

M35 AT Commands Manual

+CME ERROR: 10

AT+CMEE=2 // Enable error result code with verbose (string)

values

OK

AT+CPIN=1234

+CME ERROR: SIM not inserted

2.21. AT+CSCS Select TE Character Set

Parameter

Example

AT+CSCS? // Query the current character set

+CSCS: "GSM"

OK

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AT+GCAP Request Complete TA Capabilities List

Test Command

AT+GCAP=?

Response

OK

Execution Command

AT+GCAP

Response
TA reports a list of additional capabilities.

+GCAP: <name>s

OK

Reference
V.25ter

<name> +CGSM GSM function is supported
+FCLASS FAX function is supported

GSM/GPRS Module

M35 AT Commands Manual

AT+CSCS="UCS2" // Set the character set to “UCS2”

OK

AT+CSCS?

+CSCS: "UCS2"

OK

2.22. AT+GCAP Request Complete TA Capabilities List

Parameter

M35_AT_Commands_Manual Confidential / Released 30 / 186

AT&C Set DCD Function Mode

Execution Command

AT&C[<value>]

Response
This parameter determines how the state of circuit 109(DCD)
relates to the detection of received line signal from the distant
end.
OK

Reference
V.25ter

<value> 0 DCD line is always ON
1 DCD line is ON only in the presence of data carrier

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

Reference
V.25ter

<value> 0 TA ignores status on DTR
1 ON->OFF on DTR: Change to command mode with remaining the connected call

M35 AT Commands Manual

GSM/GPRS Module

3

Serial Interface Control Commands

3.1. AT&C Set DCD Function Mode

Parameter

3.2. AT&D Set DTR Function Mode

Parameter

M35_AT_Commands_Manual Confidential / Released 31 / 186

1. The command is applied for command state.

2. The <parity> field is ignored if the <format> field specifies no parity.

2 ON->OFF on DTR: Disconnect data call, change to command mode. During state
DTR = OFF auto-answer is off

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?

Response

+ICF: <format>,<parity>

OK

Write Command

AT+ICF=[<format>,[<parity>]]

Response
This parameter setting determines the serial interface
character framing format and parity received by TA from TE.
OK

Reference
V.25ter

<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
2 Mark (1)

3 Space (0)

NOTES

M35 AT Commands Manual

GSM/GPRS Module

3.3. AT+ICF Set TE-TA Control Character Framing

Parameter

M35_AT_Commands_Manual Confidential / Released 32 / 186

This flow control is applied for data mode.

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

Read Command

AT+IFC?

Response

+IFC: <dce_by_dte>,<dte_by_dce>

OK

Write Command

AT+IFC=<dce_by_dte>,<dte_by_dce>

Response
This parameter setting determines the data flow control on
the serial interface for data mode.
OK

Reference
V.25ter

<dce_by_dte> Specifies the method will be used by TE when receiving data from TA
0 None
1 XON/XOFF, do not pass characters on to data stack
2 RTS flow control
<dte_by_dce> Specifies the method will be used by TA when receiving data from TE
0 None
1 XON/XOFF

2 CTS flow control

NOTE

M35 AT Commands Manual

GSM/GPRS Module

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

Parameter

Example

AT+IFC=2,2 // Open the hardware flow control

OK

AT+IFC?

+IFC: 2,2

M35_AT_Commands_Manual Confidential / Released 33 / 186

If the <value> is set to 1, the following intermediate result will come out on connection to indicate the port
rate settings.

+ILRR:<rate>
<rate> Port rate setting on call connection in Baud per second

300
1200
2400
4800
9600

14400
19200
28800

AT+ILRR Set TE-TA Local Data Rate Reporting Mode

Test Command

AT+ILRR=?

Response

+ILRR: (list of supported <value>s)

OK

Read Command

AT+ILRR?

Response

+ILRR: <value>

OK

Write Command

AT+ILRR=[<value>]

Response
This parameter setting determines whether or not an
intermediate result code of local rate is reported when the
connection is established. The rate is applied after the final
result code of the connection is transmitted to TE.
OK

Reference
V.25ter

<value> 0 Disables reporting of local port rate
1 Enables reporting of local port rate

NOTE

M35 AT Commands Manual

OK

GSM/GPRS Module

3.5. AT+ILRR Set TE-TA Local Data Rate Reporting Mode

Parameter

M35_AT_Commands_Manual Confidential / Released 34 / 186

38400
57600

115200

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

Read Command

AT+IPR?

Response

+IPR: <rate>

OK

Write Command

AT+ IPR=<rate>

Response
This parameter setting determines the data rate of the TA on
the serial interface. After the delivery of any result code
associated with the current command line, the rate of
command takes effect.
OK

Reference
V.25ter

<rate> Baud rate per second
0 (Autobauding)

75

150
300
600

1200
2400
4800
9600
14400
19200
28800
38400

GSM/GPRS Module

M35 AT Commands Manual

3.6. AT+IPR Set TE-TA Fixed Local Rate

Parameter

M35_AT_Commands_Manual Confidential / Released 35 / 186

1. The default configuration of AT+IPR is adaptive baud enabled (AT+IPR=0).

2. If a fixed baud rate is set, make sure that both TE (DTE, usually external processor) and TA (DCE,

Quectel GSM module) are configured to the same rate. If adaptive baud is enabled, the TA could
automatically recognize the baud rate currently used by the TE after receiving “AT” or “at” string.

3. The value of AT+IPR cannot be restored with AT&F and ATZ, but it is still storable with AT&W and

visible in AT&V.

4. In multiplex mode, the baud rate cannot be changed by the write command AT+IPR=<rate>, and the

setting is invalid and not stored even if AT&W is executed after the write command.

5. A selected baud rate takes effect after the write commands are executed and acknowledged by “OK”.

57600

115200

NOTES

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+IPR=115200 // Set fixed baud rate to 115200

OK

AT&W // Store current setting, that is, the serial

communication speed is 115200 after restart
module

OK

AT+IPR?

+IPR: 115200

OK

3.6.1. Adaptive Baud

To take advantage of adaptive baud mode, specific attention must be paid to the following requirements:

1. Adaptive baud synchronization between TE and TA.
 Ensure that TE and TA are correctly synchronized and the baud rate used by the TE is detected

by the TA. To allow the baud rate to be synchronized simply use an “AT” or “at” string. This is
necessary after customer activates adaptive baud or when customer starts up the module with
adaptive baud enabled.

 It is recommended to wait for 2 to 3 seconds before sending the first “AT” or “at” string after the

2. Restriction on adaptive baud operation.

M35_AT_Commands_Manual Confidential / Released 36 / 186

module is started up with adaptive baud enabled. Otherwise undefined characters might be
returned.

 The serial interface shall be used with 8 data bits, no parity and 1 stop bit (factory setting).

To assure reliable communication and avoid any problem caused by undetermined baud rate between
DCE and DTE, it is strongly recommended to configure a fixed baud rate and save it instead of using
adaptive baud after start-up.

AT+CMUX Multiplexer Control

Test Command

AT+CMUX=?

Response

+CMUX: (list of supported <mode>s), (<subset>s),

NOTE

M35 AT Commands Manual

 The command “A/” can‟t be used.
 Only the string “AT” or “at” can be detected (either “AT” or “at”).
 URCs that may be issued before the TA detects a new baud rate by receiving the first AT

character, and they will be sent at the previously detected baud rate.

 If TE‟s baud rate is changed after TA has recognized the earlier baud rate, loss of

synchronization between TE and TA would be encountered and an “AT” or “at” string must be

re-sent by TE to regain synchronization on baud rate. To avoid undefined characters during
baud rate resynchronization and the possible malfunction of resynchronization, it is not
recommended to switch TE‟s baud rate when adaptive baud is enabled. Especially, this
operation is forbidden in data mode.

3. Adaptive baud and baud rate after restarting.
 In the adaptive baud mode, the detected baud rate is not saved. Therefore, resynchronization is

required after restarting the module.

 Unless the baud rate is determined, an incoming CSD call can‟t be accepted. This must be taken

into account when adaptive baud and auto-answer mode (ATS0 ≠ 0) are enabled at the same
time, especially if SIM PIN 1 authentication is done automatically and the setting ATS0 ≠ 0 is
stored to the user profile with AT&W.

 Until the baud rate is synchronized, URCs after restarting will not be output when adaptive baud

is enabled.

4. Adaptive baud and multiplex mode.
If adaptive baud is active it is not recommended to switch to multiplex mode.

5. Adaptive baud and Windows modem.
 The baud rate used by Windows modem can be detected while setting up a dial-up GPRS/CSD

connection. However, some Windows modem drivers switch TE‟s baud rate to default value
automatically after the GPRS call is terminated. In order to prevent no response to the Windows
modem when it happens, it is not recommended to establish the dial-up GPRS/CSD connection
in adaptive baud mode.

 Based on the same considerations, it is also not recommended to establish the FAX connection

in adaptive baud mode for PC FAX application, such as WinFax.

GSM/GPRS Module

3.7. AT+CMUX Multiplexer Control

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AT+CEER Extended Error Report

Test Command

AT+CEER=?

Response

OK

Execution Command

AT+CEER

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

+CEER: <locationID>,<cause>

OK

Reference
GSM 07.07

<locationID> Location ID as number code. Location IDs are listed in Section 8.3.1.
Each ID is related with anther table that contains a list of <cause>s.
<cause> Reason for last call release as number code. The number codes are listed
in several tables, sorted by different categories. The tables can be found
proceeding from the Location ID given in Section 8.3.1

M35 AT Commands Manual

GSM/GPRS Module

4

Status Control Commands

4.1. AT+CEER Extended Error Report

Parameter

Example

AT+CEER // Query error reporting in normal state, return “No error”

+CEER: 0,0

OK

ATD10086;

OK

AT+CLCC

+CLCC: 1,0,0,0,0,"10086",129,""

OK

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AT+CPAS Mobile Equipment Activity Status

Test Command

AT+CPAS=?

Response

+CPAS: (list of supported <pas>s)

OK

Execution Command

AT+CPAS

Response
TA returns the activity status of ME.

+CPAS: <pas>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Reference
GSM 07.07

<pas> 0 Ready
2 Unknown (ME is not guaranteed to respond to instructions)
3 Ringing

4 Call in progress or call hold

GSM/GPRS Module

M35 AT Commands Manual

NO CARRIER // Established a call and the remote party hangs up the call

AT+CEER // Query error reporting, the <locationID>=1 means “Cause

for protocol stack(PS) layer”, <cause>=16 means
“Normal call clearing”

+CEER: 1,16

OK

4.2. AT+CPAS Mobile Equipment Activity Status

Parameter

Example

AT+CPAS

+CPAS: 0 // Module is idle

OK

ATD10086;

OK

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AT+QINDRI Indicate RI when Using URC

Test Command

AT+QINDRI=?

Response

+QINDRI: (list of supported <status>s)

OK

Read Command

AT+QINDRI?

Response

+QINDRI: <status>

OK

Write Command

AT+QINDRI=<status>

Response

OK
ERROR

Reference

<status> 0 Off
1 On

GSM/GPRS Module

M35 AT Commands Manual

AT+CLCC

+CLCC: 1,0,3,0,0,"10086",129,""

OK

AT+CPAS

+CPAS: 3 // Module is incoming call (ringing)

OK

AT+CLCC

+CLCC: 1,0,0,0,0,"10086",129,""

OK

AT+CPAS

+CPAS: 4 // Call in progress

OK

4.3. AT+QINDRI Indicate RI when Using URC

Parameter

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AT+QMOSTAT Show State of Mobile Originated Call

Test Command

AT+QMOSTAT=?

Response

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

OK

Read Command

AT+QMOSTAT?

Response

+QMOSTAT: <mode>

OK

Write Command

AT+QMOSTAT=<mode>

Response

OK
ERROR

Reference

<mode> 0 Do not show call state of mobile originated call
1 Show call state of mobile originated call. After dialing call numbers, the URC
strings of MO RING will be sent if the other call side is alerted and the URC strings
of MO CONNECTED will be sent if the call is established

AT+QIURC Enable or Disable Initial URC Presentation

Test Command

AT+QIURC=?

Response
+QIURC: (list of supported <mode>s)

M35

AT Commands Manual

4.4. AT+QMOSTAT Show State of Mobile Originated Call

GSM/GPRS Module

Parameter

Example

AT+QMOSTAT=1 // Show call state of mobile originated call

OK

ATD10086;

OK

MO RING // The other call side is alerted

MO CONNECTED // The call is established

4.5. AT+QIURC Enable or Disable Initial URC Presentation

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When the module powers on and initialization procedure is over, URC "Call Ready" will be presented if
<mode> is 1.

OK

Read Command

AT+QIURC?

Response

+QIURC: <mode>

OK

Write Command

AT+QIURC=<mode>

Response

OK
ERROR

Reference

<mode> 0 Disable URC presentation
1 Enable URC presentation

AT+QEXTUNSOL Enable/Disable Proprietary Unsolicited Indications

Test Command

AT+QEXTUNSOL=?

Response

+QEXTUNSOL: (list of supported <exunsol>s)

OK

Write Command

AT+QEXTUNSOL=<exunsol>,<mode>

Response

OK
ERROR

Reference

<exunsol> String type. Values currently reserved by the present document
"SQ" Signal Quality Report. Displays signal strength and channel bit error rate (similar

NOTE

M35 AT Commands Manual

GSM/GPRS Module

Parameter

4.6. AT+QEXTUNSOL Enable/Disable Proprietary Unsolicited

Indications

Parameter

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to AT+CSQ) in form +CSQN: <rssi>, <ber>when values change.
"FN" Forbidden network available only. When returning to a non-registered state, this
indicates whether all the available PLMNs are forbidden.
"MW" SMS Message waiting. On receiving an SMS (as indicated by the +CMTI

indication) the SMS is decoded and checked to see if it contains one or more of

the message waiting indications (i.e. voicemail, email, fax etc). If so, an unsolicited

indication is shown in the form for each message type:

+QMWT: <store>,<index>,<voice>,<fax>,<email>,<other>. Where <store>

is the message store containing the SM, index is the message index and <voice>,

<email>, <fax>, <other> contain the number of waiting messages (with „0‟

defined as clear indication, non-zero for one or more waiting messages) or blank

for not specified in this message.
"UR" Unsolicited result code. Produces an unsolicited indication in the following call

state transition. Multiple notifications may occur for the same transition +QGURC:

<event>. Where <event> describes the current call state:

<event>:

0 Terminated active call, at least one held call remaining
1 Attempt to make an Mobile Originated call
2 Mobile Originated Call has failed for some reason
3 Mobile Originated call is ringing
4 Mobile Terminated call is queued (Call waiting)
5 Mobile Originated Call now has been connected
6 Mobile Originated or Mobile Terminated call has been disconnected
7 Mobile Originated or Mobile Terminated call hung up.

8 Mobile Originated call dialed a non-emergency number in emergency

mode
9 No answer for mobile Originated call
10 Remote number busy for Mobile Originated call
"BC" Battery Charge. Displays battery connection status and battery charge level

(similar to AT+CBC) in form +CBCN:<bcs>,<bcl> when values change.
"BM" Band mode. Displays band mode (similar to AT+QBAND) in form +QBAND:

<band> when value changes.
"SM" Additional SMS Information. Displays additional information about SMS events in

the form of Unsolicited messages of the following format +TSMSINFO: <CMS

error info> where <CMS error info> is a standard CMS error in the format

defined by the AT+CMEE command i.e. either a number or a string.
"CC" Call information. Displays the disconnected call ID and the remaining call

numbers after one of the call is disconnected. +CCINFO: <Call id

disconnected>,<Remain calls>
<mode> 0 Disable

1 Enable
2 Query

GSM/GPRS Module

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When <state> is 3, it also means initialization of SIM card related functions has been finished.

AT+QINISTAT Query State of Initialization

Test Command

AT+QINISTAT=?

Response

OK

Execution Command

AT+QINISTAT

Response

+QINISTAT: <state>

OK

Reference

<state> 0 No initialization
1 Ready to execute AT command
2 Phonebook has finished initialization
3 SMS has finished initialization

AT+QNSTATUS Query GSM Network Status

Test Command

AT+QNSTATUS=?

Response

OK

Execution Command

AT+QNSTATUS

Response

+QNSTATUS: <status>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Reference

NOTE

M35 AT Commands Manual

GSM/GPRS Module

4.7. AT+QINISTAT Query State of Initialization

Parameter

4.8. AT+QNSTATUS Query GSM Network Status

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<status> 255 Not ready to retrieve network status

0 Work in normal state
1 No available cell
2 Only limited service is available

AT+QSIMDET Switch on or off Detecting SIM Card

Test Command

AT+QSIMDET=?

Response

+QSIMDET: (0,1),(0,1)

OK

Read Command

AT+QSIMDET?

Response

+QSIMDET: <mode>,<active>

OK

Write Command

AT+QSIMDET=<mode>[,<active>]

Response

OK
ERROR

Reference

<mode> 0 Switch off detecting SIM card

1 Switch on detecting SIM card
<active> 0 Low level of SIM_PRESENCE pin indicates SIM card is present
1 High level of SIM_PRESENCE pin indicates SIM card is present

GSM/GPRS Module

M35 AT Commands Manual

Parameter

4.9. AT+QSIMDET Switch on or off Detecting SIM Card

Parameter

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AT+CIMI Request International Mobile Subscriber Identity (IMSI)

Test Command

AT+CIMI=?

Response

OK

Execution Command

AT+CIMI

Response
TA returns <IMSI>for identifying the individual SIM which is
attached to ME.

<IMSI>

OK

If error is related to ME functionality:

+CME ERROR: <err>

Reference
GSM 07.07

<IMSI> International Mobile Subscriber Identity (string without double quotes)

AT+CLCK Facility Lock

M35 AT Commands Manual

GSM/GPRS Module

5

SIM Related Commands

5.1. AT+CIMI Request International Mobile Subscriber Identity (IMSI)

Parameter

Example

AT+CIMI

460023210226023 // Query IMSI number of SIM which is attached to ME

OK

5.2. AT+CLCK Facility Lock

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Test Command

AT+CLCK=?

Response

+CLCK: (list of supported <fac>s)

OK

Write Command

AT+CLCK=<fac>,<mode>,<passwd>[,

<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

Reference
GSM 07.07

<fac> "PS" PH-SIM (lock Phone to SIM card) (ME asks password when other than current
SIM card inserted; ME may remember certain amount of previously used cards
thus not requiring password when they are inserted)
"SC" SIM (lock SIM card) (SIM asks password in ME power-up and when this lock
command is issued)
"AO" BAOC (Barr All Outgoing Calls) (refer to GSM02.88[6] clause 1)
"OI" BOIC (Barr Outgoing International Calls) (refer to GSM02.88[6] clause 1)
"OX" BOIC-exHC (Barr Outgoing International Calls except to Home Country) (refer to
GSM02.88[6] clause 1)
"AI" BAIC (Barr All Incoming Calls) (refer to GSM02.88[6] clause 2)
"IR" BIC-Roam (Barr Incoming Calls when Roaming outside the home country) (refer
to GSM02.88 [6] clause 2)
"AB" All Barring services (refer to GSM02.30[19]) (applicable only for <mode>=0)
"AG" All out Going barring services (refer to GSM02.30[19])(applicable only for
<mode>=0)
"AC" All in Coming barring services (refer to GSM02.30[19])(applicable only for
<mode>=0)
"FD" SIM fixed dialing memory: If the mobile is locked to "FD", only the phone numbers

stored to the "FD" memory can be dialed

GSM/GPRS Module

M35 AT Commands Manual

Parameter

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"PF" Lock Phone to the very first SIM card
"PN" Network Personalization (refer to GSM 02.22)
"PU" Network subset Personalization (refer to GSM 02.22)
"PP" Service Provider Personalization (refer to GSM 02.22)

"PC" Corporate Personalization (refer to GSM 02.22)
<mode> 0 Unlock
1 Lock
2 Query status

<passwd> Password
<class> 1 Voice

2 Data
4 FAX

7 All telephony except SMS (Default)

8 Short message service
16 Data circuit sync
32 Data circuit async

<status> 0 Off
1 On

AT+CPIN Enter PIN

Test Command

AT+CPIN=?

Response

OK

Read Command

AT+CPIN?

Response
TA returns an alphanumeric string indicating whether or not
some password is required.

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+CLCK="SC", 2

+CLCK: 0 // Query the status of SIM card lock,0-unlock

OK

AT+CLCK="SC",1,"1234" // Lock SIM card, the password is 1234

OK

AT+CLCK="SC",2

+CLCK: 1 // Query the status of SIM card lock,1-lock

OK

AT+CLCK="SC",0,"1234" // Unlock SIM card

OK

5.3. AT+CPIN Enter PIN

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+CPIN: <code>

OK

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 is
to be entered twice, the TA shall automatically repeat the PIN.
If no PIN request is pending, no action is taken and an error
message, +CME ERROR, is returned to TE.
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

Reference
GSM 07.07

<code> READY No further entry needed

SIM PIN ME is waiting for SIM PIN
SIM PUK ME is waiting for SIM PUK
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. it is possible to edit the FDN book only if preceding command

was acknowledged with +CME ERROR:17

SIM PUK2 Possible only if preceding command was acknowledged with error

+CME ERROR: 18

<pin> String type; password
<new pin> String type; If the PIN required is SIM PUK or SIMPUK2: new password

GSM/GPRS Module

M35 AT Commands Manual

Parameter

Example

AT+CPIN?

+CPIN: SIM PIN // Query PIN code is locked

OK

AT+CPIN=1234 // PIN

+CPIN: READY

OK

AT+CPIN? // PIN has already been entered

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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), (<pwdlength>s)

OK

Write Command

AT+CPWD=<fac>,<oldpwd>,<newpwd

>

Response
TA sets a new password for the facility lock function.

OK

Reference
GSM 07.07

<fac> "PS" Phone locked to SIM (device code). The "PS" password may either be individually
specified by the client or, depending on the subscription, supplied from the
provider (e.g. with a prepaid mobile)
"SC" SIM (lock SIM card) (SIM asks password in ME power-up and when this lock
Command issued)
"AO" BAOC (Barr All Outgoing Calls) (refer to GSM02.88[6] clause 1)
"OI" BOIC (Barr Outgoing International Calls) (refer to GSM02.88[6] clause 1)

GSM/GPRS Module

M35 AT Commands Manual

+CPIN: READY

OK

AT+CPIN?

+CPIN: SIM PUK // Query PUK code is locked

OK

AT+CPIN="26601934","1234" // Enter PUK and new PIN password

+CPIN: READY

OK

AT+CPIN?

+CPIN: READY // PUK has already been entered

OK

5.4. AT+CPWD Change Password

Parameter

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"OX" BOIC-exHC (Barr Outgoing International Calls except to Home Country) (refer to
GSM02.88[6] clause 1)
"AI" BAIC (Barr All Incoming Calls) (refer to GSM02.88[6] clause 2)
"IR" BIC-Roam (Barr Incoming Calls when Roaming outside the home country) (refer
to GSM02.88 [6] clause 2)
"AB" All Barring services (refer to GSM02.30[19]) (applicable only for <mode>=0)
"AG" All outgoing barring services (refer to GSM02.30[19]) (applicable only for
<mode>=0
"AC" All incoming barring services (refer to GSM02.30[19]) (applicable only for
<mode>=0)
"FD" SIM fixed dialing memory feature
"P2" SIM PIN2

<pwdlength>Integer. Max. length of password
<oldpwd> Password specified for the facility from the user interface or with command
<newpwd> New password

AT+CRSM Restricted SIM Access

Test Command

AT+CRSM=?

Response

OK

Write Command

AT+CRSM=<Command>[,<fileId>[,<P

1>,<P2>,<P3>[,<data>]]]

Response

+CRSM: <sw1>, <sw2> [,<response>]

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+CPIN?

+CPIN: READY

OK

AT+CPWD="SC","1234","4321" // Change SIM card password to “4321”

OK

AT+CPIN? // Restart module or re-activate the SIM card, query PIN

code is locked

+CPIN: SIM PIN

OK

AT+CPIN="4321" // PIN must be entered to define a new password “4321”

+CPIN: READY

OK

5.5. AT+CRSM Restricted SIM Access

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OK

ERROR
+CME ERROR: <err>

Reference
GSM 07.07

<Command> 176 READ BINARY
178 READ RECORD
192 GET RESPONSE
214 UPDATE BINARY
220 UPDATE RECORD
242 STATUS
All other values are reserved; refer to 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; parameters passed on by the ME to the SIM. These parameters are

mandatory for every command, except GET RESPONSE and STATUS. The values
are described in GSM 11.11

<data> Information which shall be written to the SIM (hexadecimal character format)
<sw1>,<sw2> Integer type; 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
<response> Response of a successful completion of the command previously issued (hexadecimal
character format). STATUS and GET RESPONSE return data, which gives information
about the current elementary data field. This information includes the type of file and its
size (refer to GSM 11.11). After READ BINARY or READ RECORD command the
requested data will be returned. The parameter is not returned after a successful
UPDATE BINARY or UPDATE RECORD command

GSM/GPRS Module

M35 AT Commands Manual

Parameter

Example

AT+CRSM=242

+CRSM: 145, 211, "000000007F100200000000000A13000C0400838A808A"

OK // <sw1>=145,<sw2>=211,"000000007F100200000000000

A13000C0400838A808A" which is the command
previously return data, refer to GSM 11.11

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AT+CSIM Generic SIM Access

Test Command

AT+CSIM=?

Response

+CSIM: (list of supported
<operation>s),<file_id>,<offset>/<record_id>,<len>/"data

"

OK

Write Command

AT+CSIM=<operation>,<file_id>,<offs

et>,<record_id>,<len>,<data>

Response

+CSIM: <command>,<response>

OK

ERROR

Reference
GSM 07.07

<operation> 0 Read operation
1 Write operation

<file_id> Integer type: SIM elementary file ID
<offset> Integer type: offset for reading and writing SIM
<len> Integer type: length of parameter
<data> String type: hex format: parameter is sent or received from the ME to the SIM

AT+QCSPWD Change PS Super Password

Test Command

AT+QCSPWD=?

Response

OK

Write Command

AT+QCSPWD=<oldpwd>,<newpwd>

Response

OK

ERROR

Reference

<oldpwd> String type. Old password and length should be 8

M35 AT Commands Manual

GSM/GPRS Module

5.6. AT+CSIM Generic SIM Access

Parameter

5.7. AT+QCSPWD Change PS Super Password

Parameter

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1. Default value of <oldpwd> is "12345678".

2. If the module is locked to a specific SIM card through +CLCK and password lost or SIM state is

PH-SIM PUK, you can use the super password to unlock it.

<newpwd> String type. New password and length should be 8

AT+QCCID Show ICCID

Test Command

AT+QCCID=?

Response

OK

Execution Command

AT+QCCID

Response

ICCID data

OK

Reference

AT+QGID Get SIM Card Group Identifier

Execution Command

AT+QGID

Response

+QGID: <gid1> <gid2>

OK

ERROR

Reference

NOTES

M35 AT Commands Manual

GSM/GPRS Module

5.8. AT+QCCID Show ICCID

Example

AT+QCCID // Query ICCID of the SIM card

898600220909A0206023

OK

5.9. AT+QGID Get SIM Card Group Identifier

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If the SIM supports GID files, the GID values are returned. Otherwise 0xff is returned.

AT+QSIMVOL can take effect only when the command is set successfully and the module is restarted.

<gid1> Integer type of SIM card group identifier 1
<gid2> Integer type of SIM card group identifier 2

AT+QSIMVOL Select SIM Card Operating Voltage

Test Command

AT+QSIMVOL=?

Response

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

OK

Read Command

AT+QSIMVOL?

Response

+QSIMVOL: <mode>

OK

Write Command

AT+QSIMVOL=<mode>

Response

OK

ERROR
+CME ERROR: <err>

Reference

<mode> 0 Recognize 1.8V and 3.0V SIM card (Default)
1 Recognize 1.8V SIM card only
2 Recognize 3.0V SIM card only

NOTE

NOTE

M35 AT Commands Manual

GSM/GPRS Module

Parameter

5.10. AT+QSIMVOL Select SIM Card Operating Voltage

Parameter

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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?

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>

Write Command

AT+COPS

=<mode>[,<format>[,<oper>]]

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 format of
selected operator name shall apply to further read commands
(+COPS?).

OK

If error is related to ME functionality:

M35 AT Commands Manual

GSM/GPRS Module

6

Network Service Commands

6.1. AT+COPS Operator Selection

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+CME ERROR: <err>

Reference
GSM 07.07

<stat> 0 Unknown
1 Operator available
2 Operator current
3 Operator forbidden

<oper> Operator in format as per <mode>
<mode> 0 Automatic mode; <oper> field is ignored

1 Manual operator selection; <oper> field shall be present
2 Manual deregister from network
3 Set only <format> (for read Command +COPS?) – not shown in Read Command

response
4 Manual/automatic selected; if manual selection fails, automatic mode
(<mode>=0) is entered
<format> 0 Long format alphanumeric <oper>;can be up to 16 characters long
1 Short format alphanumeric <oper>
2 Numeric <oper>; GSM Location Area Identification number

AT+CREG Network Registration

Test Command

AT+CREG=?

Response

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

OK

GSM/GPRS Module

M35 AT Commands Manual

Parameter

Example

AT+COPS=? // List all current network operators

+COPS: (2,"CHINA MOBILE","CMCC","46000"),(3,"CHINA UNICOM GSM","CU-GSM","46001")

,,(0-4),(0-2)

OK

AT+COPS? // Query the currently selected network operator

+COPS: 0,0,"CHINA MOBILE"

OK

6.2. AT+CREG Network Registration

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Unsolicited result code
If <n>=1 and there is a change in the ME network registration status +CREG: <stat>
If <n>=2 and there is a change in the ME network registration status or a change of the network cell:
+CREG: <stat>[,<lac>,<ci>]

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>]

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

Reference
GSM 07.07

<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
<stat> 0 Not registered, ME is not currently searching a new operator to register to
1 Registered, home network
2 Not registered, but ME is currently searching a new operator to register to
3 Registration denied
4 Unknown

5 Registered, roaming

<lac> String type; two byte location area code in hexadecimal format
<ci> String type; two byte cell ID in hexadecimal format

NOTES

GSM/GPRS Module

M35 AT Commands Manual

Parameter

Example

AT+CREG=1

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AT+CSQ Signal Quality Report

Test Command

AT+CSQ=?

Response

+CSQ: (list of supported <rssi>s),(list of supported <ber>s)

OK

Execution Command

AT+CSQ

Response

+CSQ: <rssi>,<ber>

OK

+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.

Reference
GSM 07.07

<rssi> 0 -113 dBm or less
1 -111 dBm

2...30 -109... -53 dBm
31 -51 dBm or greater
99 Not known or not detectable
<ber> (in percent):

0...7 As RXQUAL values in the table in GSM 05.08 subclause 8.2.4
99 Not known or not detectable

GSM/GPRS Module

M35 AT Commands Manual

OK

+CREG: 1 // URC reports that operator has been found

AT+CREG=2 // Activates extended URC mode

OK

+CREG: 1,"1878","0873" // URC reports that operator has been found with location
area code and cell ID

6.3. AT+CSQ Signal Quality Report

Parameter

Example

AT+CSQ=?

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AT+CPOL Preferred Operator List

Test Command

AT+CPOL=?

Response

+CPOL: (list of supported <index>s),(list of supported
<format>s)

OK

Read Command

AT+CPOL?

Response

+CPOL: <index1>,<format>,<oper1>

[<CR><LF>+CPOL: <index2>,<format>,<oper2>

[…]]

OK
+CME ERROR: <err>

Write Command

AT+CPOL=<index>[,<format>[,<oper>

]]

Response

OK

+CME ERROR: <err>

Reference
GSM 07.07

<index> I Integer type: order number of operator in SIM preferred operator list
<format> 0 Long format alphanumeric <oper>

1 Short format alphanumeric <oper>
2 Numeric <oper>
<oper> String type: <format> indicates either alphanumeric or numeric format is used (see +COPS
command)

GSM/GPRS Module

M35 AT Commands Manual

+CSQ: (0-31,99),(0-7,99)

OK

AT+CSQ

+CSQ: 28,0 // Query the current signal strength indication is 28 and
the bit error rate is 0

OK

6.4. AT+CPOL Preferred Operator List

Parameter

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AT+COPN Read Operator Names

Test Command

AT+COPN=?

Response

OK

Execution Command

AT+COPN

Response

+COPN: <numeric1>,<alpha1 >

[<CR><LF>+COPN: <numeric2>,<alpha2>

[…]]

OK
+CME ERROR: <err>

Reference
GSM 07.07

<numericn> String type: operator in numeric format (see +COPS)
<alphan> String type: operator in long alphanumeric format (see +COPS)

AT+QBAND Get and Set Mobile Operation Band

Test Command

AT+QBAND=?

Response

+QBAND: (list of supported <op_band>s)

OK

Read Command

AT+QBAND?

Response

+QBAND: <op_band>

OK

Write Command

AT+QBAND=<op_band>

Response

OK

If error is related to ME functionality:
+CME ERROR: <err>

Reference

M35 AT Commands Manual

GSM/GPRS Module

6.5. AT+COPN Read Operator Names

Parameter

6.6. AT+QBAND Get and Set Mobile Operation Band

Parameter

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The following radio setting to be updated is stored in non-volatile memory.

<op_band> "EGSM_MODE"
"DCS_MODE"
"PCS_MODE"

"EGSM_DCS_MODE"
"GSM850_PCS_MODE"
"GSM850_EGSM_DCS_PCS_MODE”

NOTE

GSM/GPRS Module

M35 AT Commands Manual

"GSM350_MODE"

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1. Any additional commands on the same command line are ignored.

2. 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.

3. See also ATX.

ATA Answer an Incoming Call

Execution Command

ATA

Response
TA sends off-hook to the remote station.
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:

OK

Response if no connection:

NO CARRIER

Reference
V.25ter

NOTES

M35 AT Commands Manual

GSM/GPRS Module

7

Call Related Commands

7.1. ATA Answer an Incoming Call

Example

RING // A voice call is ringing

AT+CLCC

+CLCC: 1,1,4,0,0,"02154450290",129,""

OK

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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.

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 connection is successful and non-voice call.

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

When TA returns to command mode after call release:

OK

If connection is successful and voice call:

OK

Reference
V.25ter

<n> String of dialing digits and optionally V.25ter modifiers
dialingdigits: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)

GSM/GPRS Module

M35 AT Commands Manual

ATA // Accept the voice call with ATA

OK

7.2. ATD Mobile Originated Call to Dial a Number

Parameter

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1. 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.

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

3. <n> is default value for last number that can be dialed by ATDL.

4. *# codes sent with ATD are treated as voice calls. Therefore, the command must be terminated with

a semicolon ";".

5. See ATX command for setting result code and call monitoring parameters.

6. 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 was established. The setting is controlled by
AT+COLP. Factory default is AT+COLP=0, which causes the TA returns “OK” immediately
after dialing was completed, otherwise TA will returns “OK”, “BUSY”, “NO DIAL TONE”, “NO

CARRIER”.

7. 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.

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

command.

<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

ATH Disconnect Existing Connection

Execution Command

ATH[n]

Response
Disconnect existing call by local TE from command line and
terminate call.

OK

NOTES

GSM/GPRS Module

M35 AT Commands Manual

Example

ATD10086; // Dialing out the party‟s number

OK

7.3. ATH Disconnect Existing Connection

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

1. To prevent the “+++” escape sequence from being misinterpreted as data, it should comply to

following sequence:

 No characters entered for T1 time (0.5 seconds).
 “+++” characters entered with no characters in between. For CSD call or PPP online mode, the

interval between two “+” MUST should be less than 1 second and for a transparent TCPIP
connection, the interval MUST should be less than 20 ms.

 No characters entered for T1 time (0.5 seconds).
 Switch to command mode, otherwise go to step 1.

2. To return from command mode back to data or PPP online mode: Enter ATO

 Another way to change to command mode is through DTR, see AT&D command for the details.

Reference
V.25ter

<n> 0 Disconnect from line and terminate call

+++ Switch From Data Mode to Command Mode

Execution Command

+++

Response
This command is only available during TA is in data mode,
such as, a CSD call, a GPRS connection and a transparent
TCPIP connection. 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 with the remote server or,
accordingly, the GPRS connection.

OK

Reference
V.25ter

NOTE

NOTES

M35 AT Commands Manual

GSM/GPRS Module

Parameter

7.4. +++ Switch From Data Mode to Command Mode

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TA returns to data mode from command mode CONNECT <text>,<text> only if parameter setting is X>0.

No effect in GSM.

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.
If connection is not successfully resumed:

NO CARRIER

else
TA returns to data mode from command mode CONNECT

<text>

Reference
V.25ter

<n> 0 Switch from command mode to data mode

ATP Select Pulse Dialing

Execution Command

ATP

Response

OK

Reference
V.25ter

NOTE

NOTE

M35 AT Commands Manual

GSM/GPRS Module

7.5. ATO Switch from Command Mode to Data Mode

Parameter

7.6. ATP Select Pulse Dialing

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

ATS0 Set Number of Rings before Automatically Answering Call

Read Command

ATS0?

Response

<n>

OK

Write Command

ATS0=<n>

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

Reference
V.25ter

<n> 0 Automatic answering is disabled
1-255 Enable automatic answering on the ring number specified

ATS6 Set Pause before Blind Dialing

Read Command

ATS6?

Response

<n>

OK

NOTE

M35 AT Commands Manual

GSM/GPRS Module

7.7. ATS0 Set Number of Rings before Automatically Answering Call

Parameter

Example

ATS0=3 // Set three rings before automatically answering a call

OK

RING // Call coming

RING
RING // Automatically answering the call after three rings

7.8. ATS6 Set Pause before Blind Dialing

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No effect in GSM

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

2. The correlation between ATS7 and ATS0 is important, for example: Call may fail if ATS7=30 and

ATS0=20.

3. ATS7 is only applicable to data call.

Write Command

ATS6=<n>

Response
OK

Reference
V.25ter

<n> 0-2-10 Number of seconds to wait before blind dialing

ATS7 Set Number of Seconds to Wait for Connection Completion

Read Command

ATS7?

Response

<n>

OK

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

Reference
V.25ter

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

NOTE

NOTES

M35 AT Commands Manual

GSM/GPRS Module

Parameter

7.9. ATS7 Set Number of Seconds to Wait for Connection Completion

Parameter

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No effect in GSM.

ATS8 Set the Number of Seconds to Wait for Comma Dial Modifier

Read Command

ATS8?

Response

<n>

OK

Write Command

ATS8=<n>

Response
OK

Reference
V.25ter

<n> 0 No pause when comma encountered in dial string
1-2-255 Number of seconds to wait

ATS10 Set Disconnect Delay after Indicating the Absence of Data Carrier

Read Command

ATS10?

Response

<n>

OK

Write Command

ATS10=<n>

Response
This parameter setting determines the amount of time that the
TA will remain connected in absence of data carrier. If the
data carrier is once more detected before disconnection, the
TA remains connected.
OK

Reference
V.25ter

NOTE

M35 AT Commands Manual

GSM/GPRS Module

7.10. ATS8 Set the Number of Seconds to Wait for Comma Dial Modifier

Parameter

7.11. ATS10 Set Disconnect Delay after Indicating the Absence of Data

Carrier

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No effect in GSM.

<n> 1-15-254 Number of delay in 100ms

ATT Select Tone Dialing

Execution Command

ATT

Response

OK

Reference
V.25ter

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

Read Command

AT+CBST?

Response

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

OK

Write Command

AT+CBST=[<speed>[,<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

Reference
GSM 07.07

NOTE

M35 AT Commands Manual

GSM/GPRS Module

Parameter

7.12. ATT Select Tone Dialing

7.13. AT+CBST Select Bearer Service Type

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GSM 02.02 lists the allowed combinations of the sub parameters.

<speed> 0 Adaptive baud
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 Asynchronous modem
<ce> 0 Transparent

1 Non-transparent
2 Both, transparent preferred
3 Both, non-transparent preferred

AT+CSTA Select Type of Address

Test Command

AT+CSTA=?

Response

+CSTA: (list of supported <type>s)

OK

Read Command

AT+CSTA?

Response

+CSTA: <type>

OK

Reference
GSM 07.07

< type > Current address type setting.

NOTE

M35 AT Commands Manual

GSM/GPRS Module

Parameter

7.14. AT+CSTA Select Type of Address

Parameter

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129 Unknown type (IDSN format number)
145 International number type (ISDN format )
161 National number type (IDSN format)

AT+CLCC List Current Calls of ME

Test Command

AT+CLCC=?

Response
OK

Execution Command

AT+CLCC

Response
TA returns a list of current calls of ME. If command succeeds
but no calls are available, no information response is sent to
TE.

[+CLCC: <id1>,<dir>,<stat>,<mode>,<mpty>[,

<number>,<type>[,""]]

[<CR><LF>+CLCC: <id2>,<dir>,<stat>,<mode>,<mpty>[,

<number>,<type>[,""]]

[...]]]

OK

If error is related to ME functionality:
+CME ERROR: <err>

Reference
GSM 07.07

<idx> Integer type; call identification number as described in GSM 02.30 sub clause 4.5.5.1; 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)
<mode> Bearer/tele service
0 Voice

GSM/GPRS Module

M35 AT Commands Manual

7.15. AT+CLCC List Current Calls of ME

Parameter

M35_AT_Commands_Manual Confidential / Released 73 / 186

1 Data
2 FAX
9 Unknown
<mpty> 0 Call is not one of multiparty (conference) call parties
1 Call is one of multiparty (conference) call parties

<number> Phone number in string type in format specified by <type>
<type> Type of address of octet in integer format

129 Unknown type(IDSN format number)

145 International number type (ISDN format )

AT+CR Service Reporting Control

Test Command

AT+CR=?

Response

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

OK

Read Command

AT+CR?

Response

+CR: <mode>

OK

Write Command

AT+CR=[<mode>]

Response
TA controls whether or not intermediate result code +CR:

<serv> is returned from the TA to the TE when a call set up.
OK

Reference
GSM 07.07

<mode> 0 Disable

1 Enable
<serv> ASYNC Asynchronous transparent
SYNC Synchronous transparent

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+CLCC

+CLCC: 1,0,0,0,0,"10086",129,"" // List the current call of ME

OK

7.16. AT+CR Service Reporting Control

Parameter

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Intermediate result code:
If it is 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.

Unsolicited result code:
When it is enabled, an incoming call is indicated to the TE with unsolicited result code +CRING: <type>
instead of the normal RING.
Parameter
<type> ASYNC Asynchronous transparent

REL ASYNC Asynchronous non-transparent
REL SYNC Synchronous non-transparent

AT+CRC Set Cellular Result Codes for Incoming Call Indication

Test Command

AT+CRC=?

Response

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

OK

Read Command

AT+CRC?

Response

+CRC: <mode>

OK

Write Command

AT+CRC=[<mode>]

Response
TA controls whether or not the extended format of incoming
call indication is used.

OK

Reference
GSM 07.07

<mode> 0 Disable extended format

1 Enable extended format

NOTE

NOTE

M35 AT Commands Manual

GSM/GPRS Module

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

Parameter

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SYNC Synchronous transparent
REL ASYNC Asynchronous non-transparent
REL SYNC Synchronous non-transparent
FAX Facsimile
VOICE Voice

AT+CRLP Select Radio Link Protocol Parameter

Test Command

AT+CRLP=?

Response
TA returns values supported. RLP (Radio Link Protocol)
versions 0 and 1 share the same parameter set. TA returns
only one line for this set (where <verx> is not present).

+CRLP: (list of supported <iws>s),(list of supported
<mws>s),(list of supported <T1>s),(list of supported
<N2>s),(list of supported <ver1>s),(list of supported <T4>s)

OK

Read Command

AT+CRLP?

Response
TA returns current settings for RLP version. RLP versions 0
and 1 share the same parameter set. TA returns only one line
for this set (where <verx> is not present).

+CRLP: <iws>,<mws>,<T1>,<N2>,<ver1>,<T4>

OK

Write Command

Response

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+CRC=1 // Enable extended format

OK

+CRING: VOICE // Indicate incoming call to the TE

ATH

OK

AT+CRC=0 // Disable extended format

OK

RING // Indicate incoming call to the TE

ATH

OK

7.18. AT+CRLP Select Radio Link Protocol Parameter

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AT+CRLP=[<iws>[,<mws>[,<T1>[,<N2

>[,<ver>[,<T4>]]]]]]

TA sets radio link protocol (RLP) parameters used when
non-transparent data calls are set up.

OK

Reference
GSM 07.07

<iws> 0-61 Interworking window size (IWF to MS)
<mws> 0-61 Mobile window size(MS to IWF)
<T1> 39-255 Acknowledgment timer T1 in a unit of 10ms
<N2> 1-255 Retransmission attempts N2
<verx> RLP RLP version number in integer format. When version indication is not present,

it shall equal 0.

<T4> 3-255 Re-sequencing period in integer format, in a unit of 10 ms

AT+CSNS Single Numbering Scheme

Test Command

AT+CSNS=?

Response

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

OK

Read Command

AT+CSNS?

Response

+CSNS: <mode>

OK

Write Command

AT+CSNS=[<mode>]

Response

OK

ERROR

Reference
GSM 07.07

<mode> 0 Voice

1 Alternating voice/FAX, voice first
2 FAX
3 Alternating voice/data, voice first
4 Data

GSM/GPRS Module

M35 AT Commands Manual

Parameter

7.19. AT+CSNS Single Numbering Scheme

Parameter

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5 Alternating voice/FAX, FAX first
6 Alternating voice/data, data first

7 Voice followed by data

AT+CMOD Configure Alternating Mode Calls

Test Command

AT+CMOD=?

Response

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

OK

Write Command

AT+CMOD=[<mode>]

Response

OK

ERROR

Reference
GSM 07.07

<mode> 0 Single mode
1 Alternating voice/FAX
2 Alternating voice/data
3 Voice followed by data

AT+QSFR Preference Speech Coding

Test Command

AT+QSFR=?

Response

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

OK

Read Command

AT+QSFR?

Response

+QSFR: <mode>

OK

Write Command

AT+QSFR=<mode>

Response

OK

ERROR

M35 AT Commands Manual

GSM/GPRS Module

7.20. AT+CMOD Configure Alternating Mode Calls

Parameter

7.21. AT+QSFR Preference Speech Coding

M35_AT_Commands_Manual Confidential / Released 78 / 186

This setting is stored in the non-volatile memory and will be used whenever the module is powered up
again.

Reference

<mode> 0 Automatic mode
1 FR
2 HR
3 EFR
4 AMR_FR
5 AMR_HR
6 FR and EFR, FR priority
7 EFR and FR, EFR priority
8 EFR and HR, EFR priority
9 EFR and AMR_FR, EFR priority
10 AMR_FR and FR, AMR_FR priority
11 AMR_FR and HR, AMR_FR priority
12 AMR_FR and EFR, AMR_FR priority
13 AMR_HR and FR, AMR_HR priority

14 AMR_HR and HR, AMR_HR priority

15 AMR_HR and EFR, AMR_HR priority

NOTE

GSM/GPRS Module

M35 AT Commands Manual

Parameter

M35_AT_Commands_Manual Confidential / Released 79 / 186

AT+CSMS Select Message Service

Test Command

AT+CSMS=?

Response

+CSMS: (list of supported <service>s)

OK

Read Command

AT+CSMS?

Response

+CSMS: <service>,<mt>,<mo>,<bm>

OK

Write Command

AT+CSMS=<service>

Response

+CSMS: <mt>,<mo>,<bm>

OK

If error is related to ME functionality:

+CMS ERROR: <err>

Reference
GSM 07.05

<service> 0 GSM 03.40 and 03.41 (the syntax of SMS AT commands is compatible with GSM

07.05 Phase 2 version 4.7.0; Phase 2+ features which do not require ew
command syntax may be supported (e.g. correct routing of messages with new
Phase 2+ data coding schemes))
128 SMS PDU mode - TPDU only used for ending/receiving SMSs
<mt> Mobile Terminated Messages
0 Type not supported
1 Type supported
<mo> Mobile Originated Messages
0 Type not supported
1 Type supported

<bm> Broadcast Type Messages

M35 AT Commands Manual

GSM/GPRS Module

8

SMS Commands

8.1. AT+CSMS Select Message Service

Parameter

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_AT_Commands_Manual Confidential / Released 80 / 186

0 Type not supported
1 Type supported

AT+CMGF Select SMS Message Format

Test Command

AT+CMGF=?

Response

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

OK

Read Command

AT+CMGF?

Response

+CMGF: <mode>

OK

Write Command

AT+CMGF=[<mode>]

Response
TA sets parameter to denote which kind of I/O format of
messages is used.

OK

Reference
GSM 07.05

<mode> 0 PDU mode
1 Text mode

AT+CSCA SMS Service Center Address

Test Command

AT+CSCA=?

Response

OK

Read Command

AT+CSCA?

Response

+CSCA: <sca>,<tosca>

OK

Write Command

AT+CSCA=<sca>[,<tosca>]

Response
TA updates the SMSC address, through which mobile
originated SMS are transmitted. In text mode, setting is used

M35 AT Commands Manual

GSM/GPRS Module

8.2. AT+CMGF Select SMS Message Format

Parameter

8.3. AT+CSCA SMS Service Center Address

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The Command writes the parameters in NON-VOLATILE memory.

by sending and writing commands. In PDU mode, setting is
used by the same commands, but only when the length of the
SMSC address coded into <pdu> parameter equals zero.

OK

If error is related to ME functionality:

+CME ERROR: <err>

Reference
GSM 07.05

<sca> GSM 04.11 RP SC address Address-Value field in string format; BCD numbers (or GSM
default alphabet characters) are converted to characters of the currently selected TE
character set (specified by +CSCS in TS 07.07); type of address given by <tosca>
< tosca> Service center address format GSM 04.11 RP SC address Type-of-Address octet in integer
format (default refer to <toda>)

AT+CPMS Preferred SMS Message Storage

Test Command

AT+CPMS=?

Response

+CPMS: (list of supported <mem1>s),(list of supported
<mem2>s),(list of supported <mem3>s)

OK

Read Command

AT+CPMS?

Response

+CPMS:

NOTE

M35 AT Commands Manual

GSM/GPRS Module

Parameter

Example

AT+CSCA="[phone]",145 // SMS service center address

OK

AT+CSCA? // Query SMS service center address

+CSCA: "[phone]",145

OK

8.4. AT+CPMS Preferred SMS Message Storage

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The message storages of SIM and ME offer maximum space for 60, the SIM message storage will be
priority stored. The SIM storage offer maximum space for 50, the ME storage offer maximum space for

10.

<mem1>,<used1>,<total1>,<mem2>,<used2>,<total2>,<m
em3>,<used3>,<total3>

OK

Write Command

AT+CPMS=<mem1>[,<mem2>[,<mem

3>]]

Response
TA selects memory storages <mem1>, <mem2> and

<mem3> to be used for reading, writing, etc.

+CPMS:
<used1>,<total1>,<used2>,<total2>,<used3>,<total3>

OK

If error is related to ME functionality:

+CMS ERROR: <err>

Reference
GSM 07.05

<mem1> Messages to be read and deleted from this memory storage
"SM" SIM message storage
"ME" Mobile Equipment message storage
"MT" Sum of "SM" and "ME" storages
<mem2> Messages will be written and sent to this memory storage
"SM" SIM message storage
"ME" Mobile Equipment message storage
"MT" Sum of "SM" and "ME" storages
<mem3> Received messages will be placed in this memory storage
if routing to PC is not set ("+CNMI")
"SM" SIM message storage
"ME" Mobile Equipment message storage
"MT" Sum of "SM" and "ME" storages

<usedx> Integer type; Number of messages currently in <memx>
<totalx> Integer type; Number of messages storable in <memx>

NOTE

GSM/GPRS Module

M35 AT Commands Manual

Parameter

Example

AT+CPMS="SM","SM","SM" // Set SMS message storage as “SM”

M35_AT_Commands_Manual Confidential / Released 83 / 186

AT+CMGD Delete SMS Message

Test Command

AT+CMGD=?

Response

+CMGD: (list of supported <index>s),(list of supported
<delflag>s)

OK

Write Command

AT+CMGD=<index>[,<delflag>]

Response
TA deletes message from preferred message storage

<mem1> location <index>.

OK

ERROR

If error is related to ME functionality:

+CMS ERROR:<err>

Reference
GSM 07.05

<index> Integer type; value in the range of location numbers supported by the associated memory
<delflag> 0 Delete message specified in <index>
1 Delete all read messages from <mem1> storage, leaving unread messages and

stored mobile originated messages (whether sent or not) untouched
2 Delete all read messages from <mem1> storage and sent mobile originated
messages, leaving unread messages and unsent mobile originated messages
untouched
3 Delete all read messages from <mem1> storage, sent and unsent mobile
originated messages, leaving unread messages untouched
4 Delete all messages from <mem1> storage

GSM/GPRS Module

M35 AT Commands Manual

+CPMS: 0,50,0,50,0,50

OK

AT+CPMS? // Query the current SMS message storage

+CPMS: "SM",0,50,"SM",0,50,"SM",0,50

OK

8.5. AT+CMGD Delete SMS Message

Parameter

M35_AT_Commands_Manual Confidential / Released 84 / 186

AT+CMGL List SMS Messages from Preferred Store

Test Command

AT+CMGL=?

Response

+CMGL: (list of supported <stat>s)

OK

Write Command

AT+CMGL=<stat>[,<mode>]

Response
TA returns messages with status value <stat> from message
storage <mem1> to the TE. If status of the message is
'received unread', status in the storage changes to 'received
read'.

1) If text mode (+CMGF=1) and command successful:
for SMS-SUBMITs and/or SMS-DELIVERs:

+CMGL:

<index>,<stat>,<oa/da>,[<alpha>],[<scts>][,<tooa/toda>,<
length>]<CR><LF><data>[<CR><LF>

+CMGL:

<index>,<stat>,<da/oa>,[<alpha>],[<scts>][,<tooa/toda>,<
length>]<CR><LF><data>[...]]

for SMS-STATUS-REPORTs:

+CMGL:

<index>,<stat>,<fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<st
>[<CR><LF>
+CMGL:

<index>,<stat>,<fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<st
>[...]]

for SMS-COMMANDs:

+CMGL: <index>,<stat>,<fo>,<ct>[<CR><LF>
+CMGL: <index>,<stat>,<fo>,<ct>[...]]

for CBM storage:

+CMGL:<index>,<stat>,<sn>,<mid>,<page>,<pages><CR

><LF><data>[<CR><LF>
+CMGL:

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+CMGD=1 // Delete message specified in <index>=1

OK

AT+CMGD=1,4 // Delete all messages from <mem1> storage

OK

8.6. AT+CMGL List SMS Messages from Preferred Store

M35_AT_Commands_Manual Confidential / Released 85 / 186

<index>,<stat>,<sn>,<mid>,<page>,<pages><CR><LF><d

ata>[...]]

OK

2) If PDU mode (+CMGF=0) and Command successful:

+CMGL:<index>,<stat>,[<alpha>],<length><CR><LF><pd

u><CR><LF>

+CMGL:

<index>,<stat>,[alpha],<length><CR><LF><pdu>[...]]

OK

3)If error is related to ME functionality:

+CMS ERROR: <err>

Reference
GSM 07.05

<stat> 1) If text mode
"REC UNREAD" Received unread messages
"REC READ" Received read messages
"STO UNSENT" Stored unsent messages
"STO SENT" Stored sent messages
"ALL" All messages

2) If PDU mode
0 Received unread messages
1 Received read messages
2 Stored unsent messages
3 Stored sent messages
4 All messages
<mode> 0 Normal(default)
1 Not change status of the specified SMS record

<alpha> String type alphanumeric representation of <da> or <oa> corresponding to the entry found

in MT phonebook; implementation of this feature is manufacturer specific; used character
set should be the one selected with command select TE character set +CSCS (see
definition of this command in TS 07.07)

<da> GSM 03.40 TP-Destination-Address Address-Value field in string format; BCD numbers (or

GSM default alphabet characters) are converted to characters of the currently selected TE
character set (refer to command +CSCS in TS 07.07); type of address given by <toda>

<data> In the case of SMS: GSM 03.40 TP-User-Data in text mode responses; format

− if <dcs> indicates that GSM 03.38 default alphabet is used and <fo> indicates that
GSM 03.40 TPUser-Data-Header-Indication is not set

− if TE character set other than "HEX" (refer to Command Select TE character set

GSM/GPRS Module

M35 AT Commands Manual

Parameter

M35_AT_Commands_Manual Confidential / Released 86 / 186

If parameter is omitted the command returns the list of SMS with “REC UNREAD” status.

+CSCS in TS 07.07):ME/TA converts GSM alphabet into current TE character set
according to rules of Annex A

− if TE character set is "HEX": ME/TA converts each 7-bit character of GSM alphabet into
two IRA character long hexadecimal number (e.g. character P (GSM 23) is presented
as 17 (IRA 49 and 55))

− if <dcs> indicates that 8-bit or UCS2 data coding scheme is used, or <fo> indicates
that GSM 03.40 TP-User-Data-Header-Indication is set: ME/TA converts each 8-bit
octet into two IRA character long hexadecimal number (e.g. octet with integer value 42
is presented to TE as two characters 2A (IRA 50 and 65))

In the case of CBS: GSM 03.41 CBM Content of Message in text mode responses; format:

− if <dcs> indicates that GSM 03.38 default alphabet is used

− if TE character set other than "HEX" (refer to Command +CSCS in GSM 07.07): ME/TA

converts GSM alphabet into current TE character set according to rules of Annex A

− if TE character set is "HEX": ME/TA converts each 7-bit character of GSM alphabet
into two IRA character long hexadecimal number

− if <dcs> indicates that 8-bit or UCS2 data coding scheme is used: ME/TA converts
each 8-bit octet into two IRA character long hexadecimal number

<length> Integer type value indicating in the text mode (+CMGF=1) the length of the message body

<data> (or <cdata>) in characters; or in PDU mode (+CMGF=0), the length of the actual

TP data unit in octets (i.e. the RP layer SMSC address octets are not counted in the length)
<index> Integer type; value in the range of location numbers supported by the associated memory
<oa> GSM 03.40 TP-Originating-Address Address-Value field in string format; BCD numbers (or

GSM default alphabet characters) are converted to characters of the currently selected TE

character set (refer to command +CSCS in TS 07.07); type of address given by <tooa>
<pdu> In the case of SMS: GSM 04.11 SC address followed by GSM 03.40 TPDU in hexadecimal

format: ME/TA converts each octet of TP data unit into two IRA character long hexadecimal

number (e.g. octet with integer value 42 is presented to TE as two characters 2A (IRA 50

and 65)). In the case of CBS: GSM 03.41 TPDU in hexadecimal format

<scts> GSM 03.40 TP-Service-Center-Time-Stamp in time-string format (refer to <dt>)
<toda> GSM 04.11 TP-Destination-Address Type-of-Address octet in integer format (when first

character of <da> is + (IRA 43) default value is 145, otherwise default value is 129)

<tooa> GSM 04.11 TP-Originating-Address Type-of-Address octet in integer format (refer to
<toda>)

NOTE

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+CMGF=1 // Set SMS message format as text mode

OK

AT+CMGL="ALL" // List all messages from message storage

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AT+CMGR Read SMS Message

Test Command

AT+CMGR=?

Response

OK

Write Command

AT+CMGR=<index>[,<mode>]

Response
TA returns SMS message with location value <index> from
message storage <mem1> to the TE. If status of the
message is 'received unread', status in the storage changes
to 'received read'.

1) If text mode (+CMGF=1) and command is executed
successfully:
for SMS-DELIVER:

+CMGR:

<stat>,<oa>,[<alpha>],<scts>[,<tooa>,<fo>,<pid>,<dcs>,<

sca>,<tosca>,<length>]<CR><LF><data>

for SMS-SUBMIT:

+CMGR:

<stat>,<da>,[<alpha>][,<toda>,<fo>,<pid>,<dcs>,[<vp>],<

sca>,<tosca>,<length>]<CR><LF><data>

for SMS-STATUS-REPORTs:

+CMGR:

<stat>,<fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<st>

for SMS-COMMANDs:

+CMGR:

<stat>,<fo>,<ct>[,<pid>,[<mn>],[<da>],[<toda>],<length><

CR><LF><cdata>]

for CBM storage:

+CMGR:

<stat>,<sn>,<mid>,<dcs>,<page>,<pages><CR><LF><dat

a>

2) If PDU mode (+CMGF=0) and command successful:

GSM/GPRS Module

M35 AT Commands Manual

+CMGL: 1,"STO UNSENT","","",

This is a test from Quectel

+CMGL: 2,"STO UNSENT","","",

This is a test from Quectel,once again.

OK

8.7. AT+CMGR Read SMS Message

M35_AT_Commands_Manual Confidential / Released 88 / 186

+CMGR: <stat>,[<alpha>],<length><CR><LF><pdu>

OK

3) If error is related to ME functionality:

+CMS ERROR: <err>

Reference
GSM 07.05

<index> Integer type; value in the range of location numbers supported by the associated memory
<mode> 0 Normal
1 Not change the status of the specified SMS record

<alpha> String type alphanumeric representation of <da> or <oa> corresponding to the entry found

in MT phonebook; implementation of this feature is manufacturer specific
<da> GSM 03.40 TP-Destination-Address Address-Value field in string format; BCD numbers (or

GSM default alphabet characters) are converted to characters of the currently selected TE

character set (specified by +CSCS in TS 07.07); type of address given by <toda>
<data> In the case of SMS: GSM 03.40 TP-User-Data in text mode responses; format

− if <dcs> indicates that GSM 03.38 default alphabet is used and <fo> indicates that
GSM 03.40 TPUser-Data-Header-Indication is not set

− if TE character set other than "HEX" (refer to command select TE character set
+CSCS in TS 07.07):ME/TA converts GSM alphabet into current TE character set
according to rules of Annex A

− if TE character set is "HEX": ME/TA converts each 7-bit character of GSM alphabet
into two IRA character long hexadecimal number (e.g. character P (GSM 23) is
presented as 17 (IRA 49 and 55))

− if <dcs> indicates that 8-bit or UCS2 data coding scheme is used, or <fo> indicates
that GSM 03.40 TP-User-Data-Header-Indication is set: ME/TA converts each 8-bit
octet into two IRA character long hexadecimal number (e.g. octet with integer value 42
is presented to TE as two characters 2A (IRA 50 and 65))

In the case of CBS: GSM 03.41 CBM Content of Message in text mode responses; format

− if <dcs> indicates that GSM 03.38 default alphabet is used

− if TE character set other than "HEX" (refer to command +CSCS in GSM 07.07): ME/TA

converts GSM alphabet into current TE character set according to rules of Annex A

− if TE character set is "HEX": ME/TA converts each 7-bit character of GSM alphabet
into two IRA character long hexadecimal number

− if <dcs> indicates that 8-bit or UCS2 data coding scheme is used: ME/TA converts
each 8-bit octet into two IRA character long hexadecimal number

<dcs> Depending on the command or result code: GSM 03.38 SMS Data Coding Scheme

(default value is 0), or Cell Broadcast Data Coding Scheme in integer format

GSM/GPRS Module

M35 AT Commands Manual

Parameter

M35_AT_Commands_Manual Confidential / Released 89 / 186

<fo> Depending on the command or result code: first octet of GSM 03.40 SMS-DELIVER,

SMS-SUBMIT (default value is 17), SMS-STATUS-REPORT, or SMS-COMMAND (default
value is 2) in integer format

<length> Integer type value indicating in the text mode (+CMGF=1) the length of the message body

<data> (or <cdata>) in characters; or in PDU mode (+CMGF=0), the length of the actual

TP data unit in octets (i.e. the RP layer SMSC address octets are not counted in the length)
<mid> GSM 03.41 CBM Message Identifier in integer format
<oa> GSM 03.40 TP-Originating-Address Address-Value field in string format; BCD numbers (or

GSM default alphabet characters) are converted characters of the currently selected TE

character set (specified by +CSCS in TS 07.07); type of address given by <tooa>
<pdu> In the case of SMS: GSM 04.11 SC address followed by GSM 03.40 TPDU in hexadecimal

format: ME/TA converts each octet of TP data unit into two IRA character long hexadecimal

number (e.g. octet with integer value 42 is presented to TE as two characters 2A (IRA 50

and 65))

In the case of CBS: GSM 03.41 TPDU in hexadecimal format
<pid> GSM 03.40 TP-Protocol-Identifier in integer format (default value is 0)
<sca> GSM 04.11 RP SC address Address-Value field in string format; BCD numbers (or GSM

default alphabet characters) are converted to characters of the currently selected TE

character set (specified by +CSCS in TS 07.07); type of address given by <tosca>

<scts> GSM 03.40 TP-Service-Centre-Time-Stamp in time-string format (refer to <dt>)
<stat> PDU mode text mode Explanation
0 "REC UNREAD" Received unread messages

1 "REC READ" Received read messages
2 "STO UNSENT" Stored unsent messages
3 "STO SENT" Stored sent messages
4 "ALL" All messages
<toda> GSM 04.11 TP-Destination-Address Type-of-Address octet in integer format (when first

character of <da> is + (IRA 43) default value is 145, otherwise default is 129)
<tooa> GSM 04.11 TP-Originating-Address Type-of-Address octet in integer format (default refer

to <toda>)

<tosca> GSM 04.11 RP SC address Type-of-Address octet in integer format (default refer to

<toda>)

<vp> Depending on SMS-SUBMIT <fo> setting: GSM 03.40 TP-Validity-Period either in integer
format (default value is 167) or in time-string format (refer to <dt>)

GSM/GPRS Module

M35 AT Commands Manual

Example

+CMTI: "SM",3 // Indicates that new message has been received and saved
to <index>=3 of “SM”

AT+CMGR=3 // Read message

+CMGR: "REC UNREAD","[phone]","","2010/09/25 15:06:37+32",145,4,0,241,"+8

613800210500",145,27

This is a test from Quectel

M35_AT_Commands_Manual Confidential / Released 90 / 186

AT+CMGS Send SMS Message

Test Command

AT+CMGS=?

Response

OK

Write Command

1) If text mode (+CMGF=1):

AT+CMGS=<da>[,<toda>]<CR>

text is entered

<ctrl-Z/ESC>
ESC quits without sending

2) If PDU mode (+CMGF=0):

AT+CMGS=<length><CR>
PDU is given <ctrl-Z/ESC>

Response
TA sends message from a TE to the network (SMS-SUBMIT).
Message reference value <mr> is returned to the TE on
successful message delivery. Optionally (when +CSMS
<service> value is 1 and network supports) <scts> is
returned. Values can be used to identify message upon
unsolicited delivery status report result code.

1) If text mode (+CMGF=1) and sent successfully:

+CMGS: <mr>

OK

2) If PDU mode (+CMGF=0) and sent successfully:
+CMGS: <mr>

OK

3)If error is related to ME functionality:

+CMS ERROR: <err>

Reference
GSM 07.05

<da> GSM 03.40 TP-Destination-Address Address-Value field in string format; BCD numbers (or

GSM default alphabet characters) are converted to characters of the currently selected TE

character set (specified by +CSCS in TS 07.07); type of address given by <toda>
<toda> GSM 04.11 TP-Destination-Address Type-of-Address octet in integer format (when first

character of <da> is + (IRA 43) default value is 145, otherwise default value is 129)

<length> Integer type value indicating in the text mode (+CMGF=1) the length of the message body
<data> (or <cdata>) in characters; or in PDU mode (+CMGF=0), the length of the actual
TP data unit in octets (i.e. the RP layer SMSC address octets are not counted in the length)

<mr> GSM 03.40 TP-Message-Reference in integer format

GSM/GPRS Module

M35 AT Commands Manual

OK

8.8. AT+CMGS Send SMS Message

Parameter

M35_AT_Commands_Manual Confidential / Released 91 / 186

AT+CMGW Write SMS Message to Memory

Test Command

AT+CMGW=?

Response

OK

Write Command

1) If text mode (+CMGF=1):

AT+CMGW[=<oa/da>[,<tooa/toda>[,<s

tat>]]]
<CR> text is entered
<ctrl-Z/ESC>

<ESC> quits without sending

2) If PDU mode (+CMGF=0):

AT+CMGW=<length>[,<stat>]<CR>
PDU is given <ctrl-Z/ESC>

Response
TA transmits SMS message (either SMS-DELIVER or
SMS-SUBMIT) from TE to memory storage <mem2>.
Memory location <index> of the stored message is returned.
By default message status will be set to 'stored unsent', but
parameter <stat> also allows other status values to be given.

If writing is successful:

+CMGW: <index>

OK

If error is related to ME functionality:

+CMS ERROR: <err>

Reference
GSM 07.05

<oa> GSM 03.40 TP-Originating-Address Address-Value field in string format; BCD numbers (or

GSM default alphabet characters) are converted to characters of the currently selected TE

character set (specified by +CSCS in TS 07.07);type of address given by <tooa>
<da> GSM 03.40 TP-Destination-Address Address-Value field in string format; BCD numbers (or

GSM default alphabet characters) are converted to characters of the currently selected TE

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+CMGF=1 // Set SMS message format as text mode

OK

AT+CSCS=”GSM” // Set character set as GSM which is used by the TE

OK

AT+CMGS="15021012496"

> This is a test from Quectel // Enter in text,<CTRL+Z> send message,<ESC> quits

without sending

+CMGS: 247

OK

8.9. AT+CMGW Write SMS Message to Memory

Parameter

M35_AT_Commands_Manual Confidential / Released 92 / 186

character set (specified by +CSCS in TS 07.07); type of address given by <toda>
<tooa> GSM 04.11 TP-Originating-Address Type-of-Address octet in integer format (default refer

to <toda>)
<toda> GSM 04.11 TP-Destination-Address Type-of-Address octet in integer format (when first

character of <da> is + (IRA 43) default value is 145, otherwise default value is 129)
129 Unknown type(IDSN format number)
145 International number type(ISDN format )

<stat> PDU mode text mode Explanation
0 "REC UNREAD" Received unread messages

1 "REC READ" Received read messages
2 "STO UNSENT" Stored unsent messages
3 "STO SENT" Stored sent messages
4 "ALL" All messages

<length> Integer type value indicating in the text mode (+CMGF=1) the length of the message body

<data> (or <cdata>) in characters; or in PDU mode (+CMGF=0), the length of the actual

TP data unit in octets (i.e. the RP layer SMSC address octets are not counted in the length)
<pdu> In the case of SMS: GSM 04.11 SC address followed by GSM 03.40 TPDU in hexadecimal

format: ME/TA converts each octet of TP data unit into two IRA character long hexadecimal

number (e.g. octet with integer value 42 is presented to TE as two characters 2A (IRA 50

and 65))
In the case of CBS: GSM 03.41 TPDU in hexadecimal format

<index> Index of message in selected storage <mem2>

AT+CMSS Send SMS Message from Storage

Test Command

AT+CMSS=?

Response

OK

Write Command

Response

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+CMGF=1 // Set SMS message format as text mode

OK

AT+CSCS=”GSM” // Set character set as GSM which is used by the TE

OK

AT+CMGW="15021012496"

> This is a test from Quectel // Enter in text, <CTRL+Z> write message, <ESC> quits
without sending

+CMGW: 4

OK

8.10. AT+CMSS Send SMS Message from Storage

M35_AT_Commands_Manual Confidential / Released 93 / 186

AT+CMSS=<index>[,<da>[,<toda>]]

TA sends message with location value <index> from
message storage <mem2> to the network (SMS-SUBMIT). If
new recipient address <da> is given, it shall be used instead
of the one stored with the message. Reference value <mr> is
returned to the TE on successful message delivery. Values
can be used to identify message upon unsolicited delivery
status report result code.

1) If text mode (+CMGF=1) and sent successfully:

+CMSS: <mr> [,<scts>]

OK

2) If PDU mode(+CMGF=0) and sent successfully;
+CMSS: <mr> [,<ackpdu>]

OK

3) If error is related to ME functionality:

+CMS ERROR: <err>

Reference
GSM 07.05

<index> Integer type; value in the range of location numbers supported by the associated memory
<da> GSM 03.40 TP-Destination-Address Address-Value field in string format; BCD numbers (or

GSM default alphabet characters) are converted to characters of the currently selected TE

character set (specified by +CSCS in TS 07.07); type of address given by <toda>
<toda> GSM 04.11 TP-Destination-Address Type-of-Address octet in integer format (when first

character of <da> is + (IRA 43) default value is 145, otherwise default value is 129)

<mr> GSM 03.40 TP-Message-Reference in integer format
<scts> GSM 03.40 TP-Service-Centre-Time-Stamp in time-string format (refer to <dt>)
<ackpdu> In the case of SMS: GSM 04.11 SC address followed by GSM 03.40 TPDU in hexadecimal

format: ME/TA converts each octet of TP data unit into two IRA character long hexadecimal
number (e.g. octet with integer value 42 is presented to TE as two characters 2A (IRA 50
and 65)). In the case of CBS: GSM 03.41 TPDU in hexadecimal format

AT+CMGC Send SMS Command

Test Command

Response

GSM/GPRS Module

M35 AT Commands Manual

Parameter

8.11. AT+CMGC Send SMS Command

M35_AT_Commands_Manual Confidential / Released 94 / 186

AT+CMGC=?

OK

Write Command

1) If text mode (+CMGF=1):

AT+CMGC=<fo>[,<ct>,<pid>,<mn>,<d

a>,<toda>]<CR>

text is entered

<ctrl-Z/ESC>
ESC quits without sending

2) If PDU mode (+CMGF=0):

AT+CMGC=<length><CR>
PDU is given <ctrl-Z/ESC>

Response
TA transmits SMS command message from a TE to the
network (SMS-COMMAND). Message reference value <mr>
is returned to the TE on successful message delivery. Value
can be used to identify message upon unsolicited delivery
status report result code.

1) If text mode(+CMGF=1) and sent successfully:

+CMGC: <mr> [,<scts>]

OK

2) If PDU mode(+CMGF=0) and sent successfully:

+CMGC: <mr> [,<ackpdu>]

OK

3)If error is related to ME functionality:

+CMS ERROR: <err>

Reference
GSM 07.05

<fo> First octet of GSM 03.40 SMS-COMMAND (default value is 2) in integer format
<ct> GSM 03.40 TP-Command-Type in integer format (default value is 0)
<pid> GSM 03.40 TP-Protocol-Identifier in integer format (default value is 0)
<mn> GSM 03.40 TP-Message-Number in integer format
<da> GSM 03.40 TP-Destination-Address Address-Value field in string format; BCD numbers (or

GSM default alphabet characters) are converted to characters of the currently selected TE

character set (specified by +CSCS in TS 07.07); type of address given by <toda>
<toda> GSM 04.11 TP-Destination-Address Type-of-Address octet in integer format (when first

character of <da> is + (IRA 43) default value is 145, otherwise default value is 129)
129 Unknown type(IDSN format number)
145 International number type(ISDN format )

<length> Integer type value indicating in PDU mode (+CMGF=0), the length of the actual TP data
unit in octets (i.e. the RP layer SMSC address octets are not counted in the length)

<mr> GSM 03.40 TP-Message-Reference in integer format
<scts> GSM 03.40 TP-Service-Centre-Time-Stamp in time-string format (refer to <dt>)
<ackpdu> In the case of SMS: GSM 04.11 SC address followed by GSM 03.40 TPDU in hexadecimal

format: ME/TA converts each octet of TP data unit into two IRA character long hexadecimal
number (e.g. octet with integer value 42 is presented to TE as two characters 2A (IRA 50
and 65)). In the case of CBS: GSM 03.41 TPDU in hexadecimal format

GSM/GPRS Module

M35 AT Commands Manual

Parameter

M35_AT_Commands_Manual Confidential / Released 95 / 186

AT+CNMI New SMS Message Indications

Test Command

AT+CNMI=?

Response

+CNMI: (list of supported <mode>s),(list of supported
<mt>s),(list of supported <bm>s),(list of supported
<ds>s),(list of supported <bfr>s)

OK

Read Command

AT+CNMI?

Response

+CNMI: <mode>,<mt>,<bm>,<ds>,<bfr>

OK

Write Command

AT+CNMI=[<mode>[,<mt>[,<bm>[,<ds

>[,<bfr>]]]]]

Response
TA selects the procedure on how the received new messages
from the network are indicated to the TE when TE is active,
e.g. DTR signal is ON. If TE is inactive (e.g. DTR signal is
OFF), receiving message should be done as specified in
GSM 03.38.

OK

If error is related to ME functionality:

ERROR

Reference
GSM 07.05

<mode> 0 Buffer unsolicited result codes in the TA. If TA result code buffer is full, indications
can be buffered in some other place or the oldest indications may be discarded
and replaced with the new received indications
1 Discard indication and reject new received message unsolicited result codes
when TA-TE link is reserved (e.g. in on-line data mode). Otherwise forward them
directly to the TE
2 Buffer unsolicited result codes in the TA when TA-TE link is reserved (e.g. in
on-line data mode) and flush them to the TE after reservation. Otherwise forward
them directly to the TE
3 Forward unsolicited result codes directly to the TE. TA-TE link specific inband
technique used to embed result codes and data when TA is in on-line data mode
<mt> (The rules for storing received SMS depend on its data coding scheme (refer to GSM 03.38
[2]), preferred memory storage (+CPMS) setting and this value):
0 No SMS-DELIVER indications are routed to the TE

GSM/GPRS Module

M35 AT Commands Manual

8.12. AT+CNMI New SMS Message Indications

Parameter

M35_AT_Commands_Manual Confidential / Released 96 / 186

Unsolicited result code

+CMTI: <mem>,<index> Indicates that new message has been received
+CMT: [<alpha>],<length><CR><LF><pdu> Short message is output directly
+CBM: <length><CR><LF><pdu> Cell broadcast message is output directly

1 If SMS-

DELIVER is stored into ME/TA, indication of the memory location is routed
to the TE by using unsolicited result code: +CMTI: <mem>,<index>
2 SMS-DELIVERs (except class 2) are routed directly to the TE using unsolicited
result code: +CMT: [<alpha>],<length><CR><LF><pdu> (PDU mode enabled)
or +CMT: <oa>, [<alpha>],<scts>

[,<tooa>,<fo>,<pid>,<dcs>,<sca>,<tosca>,<length>]<CR><LF><data>

(Text mode enabled; about parameters in italics, refer to Command Show Text
Mode Parameters +CSDH). Class 2 messages result in indication as defined in

<mt>=1
3 Class 3 SMS-DELIVERs are routed directly to TE by using unsolicited result
codes defined in <mt>=2. Messages of other classes result in indication as
defined in <mt>=1
<bm> (The rules for storing received CBMs depend on its data coding scheme (refer to GSM

03.38 [2]), the setting of Select CBM Types (+CSCB) and this value):
0 No CBM indications are routed to the TE
2 New CBMs are routed directly to the TE by using unsolicited result code: +CBM:
<length><CR><LF><pdu> (PDU mode enabled) or +CBM:
<sn>,<mid>,<dcs>,<page>,<pages><CR><LF><data> (Text mode enabled)
3 Class 3 CBMs are routed directly to TE by using unsolicited result codes defined
in <bm>=2. If CBM storage is supported, messages of other classes result in
indication as defined in <bm>=1
<ds> 0 No SMS-STATUS-REPORTs are routed to the TE

+CDS: <length><CR><LF><pdu> (PDU mode enabled) or +CDS:

<fo>,<mr>,[<ra>],[<tora>],<scts>,<dt>,<st> (Text mode enabled)
<bfr> 0 TA buffer of unsolicited result codes defined in this command is flushed to the TE
when <mode> 1...3 is entered (OK response shall be given before flushing the
codes)

NOTE

GSM/GPRS Module

M35 AT Commands Manual

Example

AT+CMGF=1 // Set SMS message format as text mode

OK

AT+CSCS=”GSM” // Set character set as GSM which is used by the TE

OK

AT+CNMI=2,1 // SMS-DELIVER is stored into ME/TA, indication of the

memory location is routed to the TE

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AT+CRES Restore SMS Settings

Test Command

AT+CRES=?

Response

+CRES: (list of supported <profile>s)

OK

Write Command

AT+CRES[=<profile>]

Response
TA restores SMS settings from non-volatile memory to active
memory. A TA can contain several profiles of settings.
Settings specified in commands service centre address
+CSCA, set message parameters +CSMP and select cell
broadcast message types +CSCB (if implemented) are
restored. Certain settings may not be supported by the
storage (e.g. SIM SMS parameters) and therefore can not be
restored.

OK

If error is related to ME functionality:

ERROR

Reference
GSM 07.05

<profile> 0-3 Manufacturer specific profile number where settings are to be stored

AT+CSAS Save SMS Settings

M35 AT Commands Manual

OK

+CMTI: "SM",5 // Indicate that new message has been received

AT+CNMI=2,2 // Set SMS-DELIVERs are routed directly to the TE

OK

+CMT: "[phone]"," ","2010/09/25 17:25:01+32",145,4,0,241,"[phone]",145,27
This is a test from Quectel // Short message is output directly

GSM/GPRS Module

8.13. AT+CRES Restore SMS Settings

Parameter

8.14. AT+CSAS Save SMS Settings

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Test Command

AT+CSAS=?

Response

+CSAS: (list of supported <profile>s)

OK

Write Command

AT+CSAS[=<profile>]

Response
TA saves active message service settings to non-volatile
memory. A TA can contain several profiles of settings.
Settings specified in commands service centre address
+CSCA, Set Message Parameters +CSMP and Select cell
broadcast message Types +CSCB (if implemented) are
saved. Certain settings may not be supported by the storage
(e.g. SIM SMS parameters) and therefore can not be saved.

OK

If error is related to ME functionality:

ERROR

Reference
GSM 07.05

<profile> 0-3 Manufacturer specific profile number where settings are to be stored

AT+CSCB Select Cell Broadcast SMS Messages

Test Command

AT+CSCB=?

Response

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

OK

Read Command

AT+CSCB?

Response

+CSCB: <mode>,<mids>,<dcss>

OK

Write Command

AT+CSCB=<mode>[,mids>[,<dcss>]]

Response
TA selects which types of CBMs are to be received by the ME.

OK

If error is related to ME functionality:

+CMS ERROR: <err>

Reference
GSM 07.05

GSM/GPRS Module

M35 AT Commands Manual

Parameter

8.15. AT+CSCB Select Cell Broadcast SMS Messages

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The Command writes the parameters in NON-VOLATILE memory.

<mode> 0 Message types specified in <mids> and <dcss> are accepted
1 Message types specified in <mids> and <dcss> are not accepted
<mids> String type; all different possible combinations of CBM message identifiers (refer to <mid>)

(default is empty string)

e.g. "0,1,5,320-478,922"
<dcss> String type; all different possible combinations of CBM data coding schemes (refer to

<dcs>) (default is empty string)

e.g. "0-3,5"

AT+CSDH Show SMS Text Mode Parameters

Test Command

AT+CSDH=?

Response

+CSDH: (list of supported <show>s)

OK

Read Command

AT+CSDH?

Response

+CSDH: <show>

OK

Write Command

AT+CSDH=[<show>]

Response
TA determines whether detailed header information is shown
in text mode result codes.

OK

Reference
GSM 07.05

<show> 0 Do not show header values defined in commands +CSCA and +CSMP (<sca>,
<tosca>, <fo>, <vp>, <pid> and <dcs>) nor <length>, <toda> or <tooa> in
+CMT, +CMGL, +CMGR result codes for SMS-DELIVERs and SMS-SUBMITs in
text mode
1 Show the values in result codes

NOTE

M35 AT Commands Manual

GSM/GPRS Module

Parameter

8.16. AT+CSDH Show SMS Text Mode Parameters

Parameter

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