Telit Wireless Solutions ME310G1 Installation manual

ME310G1/ME910G1/ML865G1
AT Commands Reference Guide
80617ST10991A Rev. 4 –2020-04-15

ME310G1/ME910G1/ML865G1 AT Commands Reference Guide
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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
NOTICE
While reasonable efforts have been made to assure the accuracy of this document, Telit assumes no liability
resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein.
The information in this document has been carefully checked and is believed to be reliable. However, no
responsibility is assumed for inaccuracies or omissions. Telit reserves the right to make changes to any products
described herein and reserves the right to revise this document and to make changes from time to time in content
hereof with no obligation to notify any person of revisions or changes. Telit does not assume any liability arising
out of the application or use of any product, software, or circuit described herein; neither does it convey license
under its patent rights or the rights of others.
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must not be construed to mean that Telit intends to announce such Telit products, programming, or services in
your country.
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copyrighted Telit material, such as computer programs stored in semiconductor memories or other media. Laws
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the copyrights, patents or patent applications of Telit, as arises by operation of law in the sale of a product.
COMPUTER SOFTWARE COPYRIGHTS
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estoppel, or otherwise, any license under the copyrights, patents or patent applications of Telit or other 3rd Party
supplied SW, except for the normal non-exclusive, royalty free license to use that arises by operation of law in
the sale of a product.

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USAGE AND DISCLOSURE RESTRICTIONS
I. License Agreements
The software described in this document is the property of Telit and its licensors. It is furnished by express license
agreement only and may be used only in accordance with the terms of such an agreement.
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Software and documentation are copyrighted materials. Making unauthorized copies is prohibited by law. No
part of the software or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system,
or translated into any language or computer language, in any form or by any means, without prior written
permission of Telit
III. High Risk Materials
Components, units, or third-party products used in the product described herein are NOT fault-tolerant and are
NOT designed, manufactured, or intended for use as on-line control equipment in the following hazardous
environments requiring fail-safe controls: the operation of Nuclear Facilities, Aircraft Navigation or Aircraft
Communication Systems, Air Traffic Control, Life Support, or Weapons Systems (High Risk Activities"). Telit and
its supplier(s) specifically disclaim any expressed or implied warranty of fitness for such High Risk Activities.
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TELIT and the Stylized T Logo are registered in Trademark Office. All other product or service names are the
property of their respective owners.
V. Third Party Rights
The software may include Third Party Right software. In this case you agree to comply with all terms and
conditions imposed on you in respect of such separate software. In addition to Third Party Terms, the disclaimer
of warranty and limitation of liability provisions in this License shall apply to the Third Party Right software.
TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED FROM ANY THIRD
PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY MATERIALS INCLUDED IN THE
SOFTWARE, ANY THIRD PARTY MATERIALS FROM WHICH THE SOFTWARE IS DERIVED
(COLLECTIVELY “OTHER CODE”), AND THE USE OF ANY OR ALL THE OTHER CODE IN CONNECTION
WITH THE SOFTWARE, INCLUDING (WITHOUT LIMITATION) ANY WARRANTIES OF SATISFACTORY
QUALITY OR FITNESS FOR A PARTICULAR PURPOSE.
NO THIRD PARTY LICENSORS OF OTHER CODE SHALL HAVE ANY LIABILITY FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING
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TORT OR OTHER LEGAL THEORY, ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE
OTHER CODE OR THE EXERCISE OF ANY RIGHTS GRANTED UNDER EITHER OR BOTH THIS LICENSE
AND THE LEGAL TERMS APPLICABLE TO ANY SEPARATE FILES, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

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APPLICABILITY TABLE
ME310G1-W1
ME310G1-WW
ME910G1-W1
ME910G1-WW
ML865G1-WW
37.00.xx1/M0C.xx0001

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CONTENTS
NOTICE..............................................................................................................................................................2
COPYRIGHTS....................................................................................................................................................2
COMPUTER SOFTWARE COPYRIGHTS.........................................................................................................2
USAGE AND DISCLOSURE RESTRICTIONS..................................................................................................3
APPLICABILITY TABLE....................................................................................................................................4
CONTENTS........................................................................................................................................................5
1. INTRODUCTION...................................................................................................................................14
Scope.........................................................................................................................................14
Audience....................................................................................................................................14
Contact Information, Support .....................................................................................................14
Icons and Text Conventions.......................................................................................................15
2. AT COMMANDS...................................................................................................................................16
Definitions ..................................................................................................................................16
AT Command Syntax.................................................................................................................16
2.2.1. String Type Parameters .............................................................................................................17
2.2.2. Command Lines.........................................................................................................................17
2.2.2.1. ME Error Result Code - +CME ERROR: <err> ..........................................................................18
2.2.2.2. Message Service Failure Result Code - +CMS ERROR: <err> .................................................21
2.2.2.3. Carriage Returns, Line Feeds and Log ......................................................................................22
2.2.3. Information Responses and Result Codes.................................................................................22
2.2.4. Command Response Time-Out..................................................................................................23
2.2.5. Command Issuing Timing...........................................................................................................23
Storage.......................................................................................................................................23
2.3.1. Factory Profile and User Profiles................................................................................................23
AT Command Short Overview Table..........................................................................................24
3. AT COMMANDS REFERENCES..........................................................................................................25
General Control and Config........................................................................................................25
3.1.1. Command Line Prefixes.............................................................................................................25
3.1.1.1. AT - Starting a Command Line...................................................................................................25
3.1.1.2. A/ - Last Command Automatic Repetition ..................................................................................26
3.1.1.3. AT#/ - Repeat Last Command....................................................................................................27
3.1.2. Generic Modem Control.............................................................................................................28
3.1.2.1. AT#SELINT - Select Interface Style...........................................................................................28
3.1.2.2. AT&F - Set to Factory-Defined Configuration.............................................................................29
3.1.2.3. ATZ - Soft Reset ........................................................................................................................30
3.1.2.4. AT&Y - Default Reset Basic Profile Designation........................................................................31
3.1.2.5. AT&P - Default Reset Full Profile Designation...........................................................................32
3.1.2.6. AT&W - Store Current Configuration..........................................................................................33
3.1.2.7. AT&N - Display Internal Phonebook Stored Numbers................................................................34
3.1.2.8. AT#Z - Extended Reset..............................................................................................................35

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3.1.2.9. AT&V - Display some Configuration and Profile.........................................................................36
3.1.2.10. AT+GCI - Country of Installation ................................................................................................37
3.1.2.11. AT+GCAP - Capabilities List......................................................................................................38
3.1.2.12. AT+GMI - Manufacturer Identification ........................................................................................39
3.1.2.13. AT+GMM - Model Identification..................................................................................................40
3.1.2.14. AT+GMR - Revision Identification..............................................................................................41
3.1.2.15. AT+GSN - Serial Number...........................................................................................................42
3.1.2.16. AT+CGMI - Request Manufacturer Identification........................................................................43
3.1.2.17. AT+CGMM - Request Model Identification.................................................................................44
3.1.2.18. AT+CGMR - Request Revision Identification .............................................................................45
3.1.2.19. AT+CGSN - Request Product Serial Number Identification .......................................................46
3.1.2.20. AT#CGMI - Request Manufacturer Identification........................................................................47
3.1.2.21. AT#CGMR - Request Revision Identification .............................................................................48
3.1.2.22. AT#CGSN - Product Serial Number Identification......................................................................49
3.1.2.23. AT#CGMF - Request Product Code...........................................................................................50
3.1.2.24. AT#SWPKGV - Request Software Package Version.................................................................51
3.1.2.25. AT+CPAS - Phone Activity Status..............................................................................................52
3.1.2.26. AT+CFUN - Set Phone Functionality..........................................................................................53
3.1.2.27. AT+CMER - Mobile Equipment Event Reporting .......................................................................55
3.1.2.28. AT+CSVM - Set Voice Mail Number ..........................................................................................57
3.1.2.29. AT#MBN - Mailbox Numbers......................................................................................................58
3.1.2.30. AT#MWI - Message Waiting Indication ......................................................................................59
3.1.2.31. AT+CLAC - Available AT Commands ........................................................................................61
3.1.2.32. AT#LANG - Select Language.....................................................................................................62
3.1.2.33. AT+CMEE - Report Mobile Equipment Error..............................................................................63
3.1.2.34. AT#CEER - Extended Numeric Error Report .............................................................................64
3.1.2.35. AT#PSMRI - Power Saving Mode Ring Indicator.......................................................................66
3.1.2.36. AT+CSCS - Select TE Character Set.........................................................................................67
3.1.2.37. AT+CMUX - Multiplexing Mode..................................................................................................68
3.1.2.38. AT#USBCFG - USB Configuration.............................................................................................70
3.1.2.39. AT#PORTCFG - Connect Physical Ports to Service Access Points...........................................71
3.1.2.40. AT#ATDELAY - AT Command Delay.........................................................................................73
3.1.2.41. AT&Z - Store Telephone Number in the Internal Phonebook.....................................................74
3.1.2.42. AT&V2 - Display Last Connection Statistics...............................................................................75
3.1.2.43. AT+IMEISV - Request IMEI and Software Version ....................................................................76
3.1.2.44. AT#CGMM - Request Model Identification.................................................................................77
3.1.2.45. AT&V0 - Display Current Configuration and Profile....................................................................78
3.1.2.46. AT#FWSWITCH - Set Active Firmware Image...........................................................................79
3.1.2.47. AT#IMSPDPSET - IMS PDP APN Number Set..........................................................................80
3.1.2.48. AT#TID - Request Telit ID..........................................................................................................81
3.1.3. S Parameters.............................................................................................................................82
3.1.3.1. ATS0 - Number of Rings to Auto Answer...................................................................................82
3.1.3.2. ATS1 - Ring Counter..................................................................................................................83
3.1.3.3. ATS2 - Escape Character ..........................................................................................................84
3.1.3.4. ATS3 - Command Line Termination Character..........................................................................85

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3.1.3.5. ATS4 - Response Formatting Character....................................................................................86
3.1.3.6. ATS5 - Command Line Editing Character..................................................................................87
3.1.3.7. ATS7 - Connection Completion Time-Out..................................................................................88
3.1.3.8. ATS12 - Escaper Prompt Delay.................................................................................................89
3.1.3.9. ATS25 - Delay to DTR Off..........................................................................................................90
3.1.3.10. AT&V1 - S Registers Display .....................................................................................................91
3.1.3.11. ATS10 - Carrier Off with Firm Time............................................................................................92
3.1.3.12. AT&V3 - Extended S Registers Display .....................................................................................93
3.1.4. DTE - Modem Interface Control .................................................................................................94
3.1.4.1. ATE - Command Echo ...............................................................................................................94
3.1.4.2. ATQ - Quiet Result Codes..........................................................................................................95
3.1.4.3. ATV - Response Format.............................................................................................................96
3.1.4.4. ATI - Identification Information ...................................................................................................97
3.1.4.5. AT&C - Data Carrier Detect (DCD) Control................................................................................98
3.1.4.6. AT&D - Data Terminal Ready (DTR) Control .............................................................................99
3.1.4.7. AT&K - Flow Control ................................................................................................................100
3.1.4.8. AT&S - Data Set Ready (DSR) Control....................................................................................101
3.1.4.9. AT+IPR - UART DCE Interface Data Rate Speed....................................................................102
3.1.4.10. AT+IFC - DTE-Modem Local Flow Control...............................................................................104
3.1.4.11. AT+ICF - DTE-Modem Character Framing ..............................................................................105
3.1.4.12. AT#SKIPESC - Skip Escape Sequence...................................................................................106
3.1.4.13. AT#E2ESC - Escape Sequence Guard Time...........................................................................107
3.1.4.14. ATX - Extended Result Codes .................................................................................................108
3.1.5. Call (Voice and Data) Control...................................................................................................109
3.1.5.1. ATD - Dialup Connection..........................................................................................................109
3.1.5.2. ATH - Hang Up/Disconnect the Current Call............................................................................110
3.1.5.3. ATO - Return to ON-Line Mode................................................................................................111
3.1.6. Modulation & Compression Control..........................................................................................112
3.1.6.1. AT%E - Line Quality and Auto Retrain.....................................................................................112
Network....................................................................................................................................113
3.2.1. AT+CNUM - Subscriber Number..............................................................................................113
3.2.2. AT+COPN - Read Operator Names.........................................................................................114
3.2.3. AT+CREG - Network Registration Status.................................................................................115
3.2.4. AT+COPS - Operator Selection ...............................................................................................117
3.2.5. AT+CLCK - Facility Lock/Unlock..............................................................................................119
3.2.6. AT+CPWD - Change Facility Password...................................................................................121
3.2.7. AT+CPOL - Preferred Operator List.........................................................................................122
3.2.8. AT+CPLS - Selection of Preferred PLMN List..........................................................................124
3.2.9. AT+CSQ - Signal Quality .........................................................................................................125
3.2.10. AT#SERVINFO - Serving Cell Information...............................................................................127
3.2.11. AT#NWEN - Network Emergency Number Update..................................................................129
3.2.12. AT#PLMNUPDATE - Update PLMN List..................................................................................130
3.2.13. AT#PLMNMODE - PLMN List Selection...................................................................................131
3.2.14. AT#BND - Select Band.............................................................................................................132
3.2.15. AT#AUTOBND - Automatic Band Selection.............................................................................134

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3.2.16. AT#SNUM - Subscriber Number..............................................................................................135
3.2.17. AT#CEERNET - Extended Numeric Error Report for Network Reject Cause...........................136
3.2.18. AT#CEERNETEXT - Extended Error Report for Network Reject Cause..................................139
3.2.19. AT#CIPHIND - Ciphering Indication.........................................................................................141
3.2.20. AT#PSNT - Packet Service Network Type...............................................................................143
3.2.21. AT#ENCALG - Set Encryption Algorithm .................................................................................145
3.2.22. AT+CEMODE - Set Mode of Operation for EPS ......................................................................148
3.2.23. AT+CESQ - Extended Signal Quality.......................................................................................149
3.2.24. AT#ENS - Enhanced Network Selection..................................................................................151
3.2.25. AT+WS46 - PCCA STD-101 Select Wireless Network.............................................................152
3.2.26. AT+CEDRXS - eDRX Setting...................................................................................................153
3.2.27. AT#WS46 - Select IoT Technology..........................................................................................155
3.2.28. AT+CEDRXRDP - eDRX Read Dynamic Parameters..............................................................156
3.2.29. AT+CEREG - EPS Network Registration Status......................................................................157
3.2.30. AT#RFSTS - Read Current Network Status.............................................................................159
3.2.31. AT#SPN - Read SIM Field SPN...............................................................................................163
3.2.32. AT#CEDRXS - Extended eDRX Setting...................................................................................164
3.2.33. AT#MONI - Cell Monitor...........................................................................................................167
SIM...........................................................................................................................................171
3.3.1. AT+CPIN - Enter the PIN.........................................................................................................171
3.3.2. AT#PCT - Display PIN Counter................................................................................................173
3.3.3. AT+CCID - Read ICCID...........................................................................................................174
3.3.4. AT+CIMI - International Mobile Subscriber Identity (IMSI) .......................................................175
3.3.5. AT#CIMI - International Mobile Subscriber Identity (IMSI) .......................................................176
3.3.6. AT#SIMDET - SIM Detection Mode .........................................................................................177
3.3.7. AT#CCID - Read ICCID ...........................................................................................................179
3.3.8. AT#SIMPR - SIM Presence Status ..........................................................................................180
3.3.9. AT#QSS - Query SIM Status....................................................................................................182
3.3.10. AT+CRSM - Restricted SIM access.........................................................................................184
3.3.11. AT+CSIM - Generic SIM Access..............................................................................................186
3.3.12. AT+CCHO - Open Logical Channel .........................................................................................188
3.3.13. AT+CCHC - Close Logical Channel.........................................................................................190
3.3.14. AT+CGLA - Generic UICC Logical Channel Access................................................................191
3.3.15. AT+ICCID - Read ICCID..........................................................................................................193
3.3.16. AT#SIMINCFG - SIMIN Pin Configuration................................................................................194
SIM Toolkit...............................................................................................................................196
3.4.1. AT#STIA - SIM/USIM Toolkit Interface Action..........................................................................196
3.4.2. AT#STGI - SIM Toolkit Get Information....................................................................................201
3.4.3. AT#STSR - SIM Toolkit Send Response..................................................................................209
SMS & CB................................................................................................................................211
3.5.1. AT+CSMS - Select Message Service.......................................................................................211
3.5.2. AT+CPMS - Preferred Message Storage.................................................................................213
3.5.3. AT+CMGF - Message Format..................................................................................................215
3.5.4. AT+CSCA - Service Center Address........................................................................................216
3.5.5. AT+CSMP - Set Text Mode Parameters..................................................................................218

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3.5.6. AT+CSDH - Show Text Mode Parameters...............................................................................220
3.5.7. AT+CSAS - Save Settings .......................................................................................................221
3.5.8. AT+CRES - Restore Settings...................................................................................................222
3.5.9. AT+CMMS - More Message to Send .......................................................................................223
3.5.10. AT+CNMI - New Message Indications to Terminal Equipment ................................................224
3.5.11. AT+CNMA - New Message Acknowledgement........................................................................229
3.5.12. AT+CMGL - List Messages......................................................................................................232
3.5.13. AT+CMGR - Read Message....................................................................................................236
3.5.14. AT+CMGS - Send Short Message...........................................................................................240
3.5.15. AT+CMSS - Send Message from Storage ...............................................................................243
3.5.16. AT+CMGW - Write Short Message to Memory ........................................................................244
3.5.17. AT+CMGD - Delete Message...................................................................................................248
3.5.18. AT+CGSMS - Select Service for MO SMS Messages .............................................................249
3.5.19. AT#SMSMODE - SMS Commands Operation Mode ...............................................................250
3.5.20. AT#CMGLCONCINDEX - Report Concatenated SMS Indexes ...............................................251
3.5.21. AT#E2SMSRI - SMS Ring Indicator.........................................................................................252
3.5.22. AT#SMOV - SMS Overflow......................................................................................................253
3.5.23. AT#SMSMOVE - Move Short Message to other Memory ........................................................254
Phonebook...............................................................................................................................256
3.6.1. AT+CPBS - Select Phonebook Memory Storage.....................................................................256
3.6.2. AT+CPBR - Read Phonebook Entries......................................................................................258
3.6.3. AT+CPBF - Find Phonebook Entries........................................................................................261
3.6.4. AT+CPBW - Write Phonebook Entry........................................................................................264
3.6.5. AT#CPBGR - Read Group Entries...........................................................................................267
3.6.6. AT#CPBGW - Write Group Entry .............................................................................................269
3.6.7. AT#CPBD - Delete All Phonebook Entries...............................................................................270
Time & Alarm ...........................................................................................................................271
3.7.1. AT+CCLK - Clock Management...............................................................................................271
3.7.2. AT+CALA - Alarm Management...............................................................................................273
3.7.3. AT+CAPD - Postpone Alarm....................................................................................................277
3.7.4. AT+CSDF - Setting Date Format..............................................................................................278
3.7.5. AT+CTZR - Time Zone Reporting............................................................................................280
3.7.6. AT+CTZU - Automatic Time Zone Update...............................................................................281
3.7.7. AT#NITZ - Network Identity and Time Zone.............................................................................282
3.7.8. AT#CCLK - Clock Management...............................................................................................284
3.7.9. AT#CCLKMODE - Clock Mode................................................................................................286
3.7.10. AT#WAKE - Wake from Alarm Mode .......................................................................................288
3.7.11. AT+CSTF - Setting Time Format..............................................................................................289
3.7.12. AT+CALD - Delete Alarm.........................................................................................................290
HW and Radio Control .............................................................................................................291
3.8.1. AT#CBC - Battery and Charger Status.....................................................................................291
3.8.2. AT#GPIO - General Purpose Input/Output Pin Control............................................................292
3.8.3. AT#ALARMPIN - Alarm Pin Configuration ...............................................................................296
3.8.4. AT#SLED - STAT_LED GPIO Setting......................................................................................297
3.8.5. AT#SLEDSAV - Save STAT_LED GPIO Setting......................................................................299

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3.8.6. AT#ADC - Read Analog/Digital Converter Input.......................................................................300
3.8.7. AT#V24CFG - V24 Output Pins Configuration.........................................................................302
3.8.8. AT#V24 - V24 Output Pins Control ..........................................................................................303
3.8.9. AT#I2CWR - Write to I2C.........................................................................................................304
3.8.10. AT#I2CRD - Read from I2C .....................................................................................................306
3.8.11. AT#I2CCF - Combined Format for I2C Writing and Reading ...................................................308
3.8.12. AT#TESTMODE - Test Mode Configuration ............................................................................310
Power Down.............................................................................................................................314
3.9.1. AT#REBOOT - Module Reboot................................................................................................314
3.9.2. AT#ENHRST - Periodic Reset .................................................................................................315
3.9.3. AT#SHDN - Software Shutdown ..............................................................................................317
3.9.4. AT#SYSHALT - System Turn-Off.............................................................................................318
3.9.5. AT#FASTSHDN - Fast Shutdown Configuration......................................................................319
Easy Scan................................................................................................................................321
3.10.1. AT#CSURV - Network Survey..................................................................................................321
3.10.2. AT#CSURVF - Network Survey Format...................................................................................325
3.10.3. AT#CSURVNLF - Network Survey CR LF Removing ..............................................................326
3.10.4. AT#CSURVEXT - Extended Network Survey...........................................................................327
Jamming Detection and Report................................................................................................328
3.11.1. AT#JDRENH2 - Enhanced Jamming Detection and Report.....................................................328
3.11.2. AT#JDR4GCFG - LTE Jamming Detection Threshold Configuration.......................................331
Packet Domain.........................................................................................................................333
3.12.1. AT+CGDCONT - Define PDP Context.....................................................................................333
3.12.2. AT+CGPADDR - Show PDP Address......................................................................................336
3.12.3. AT#AUTOATT - Auto-Attach Property......................................................................................338
3.12.4. AT#MSCLASS - Multislot Class Control...................................................................................339
3.12.5. AT#GAUTH - PPP Data Connection Authentication Type........................................................340
3.12.6. AT+CGAUTH - Define PDP Context Authentication Parameters.............................................341
3.12.7. AT+CGCONTRDP - PDP Context Read Dynamic Parameters................................................342
3.12.8. AT+CGPIAF - Printing IP Address Format...............................................................................344
3.12.9. AT+CGACT - PDP Context Activate or Deactivate ..................................................................346
3.12.10. AT+CGEREP - Packet Domain Event Reporting .....................................................................347
3.12.11. AT#PPPCFG - PPP Configuration ...........................................................................................349
3.12.12. AT+CGREG - GPRS Network Registration Status...................................................................350
3.12.13. AT+CGATT - PS Attach or Detach...........................................................................................353
3.12.14. AT+CSODCP - Sending of Originating Data Via the Control Plane.........................................354
3.12.15. AT+CRTDCP - Reporting of Terminating Data Via the Control Plane......................................355
IPEasy......................................................................................................................................356
3.13.1. AT#SGACT - Context Activation..............................................................................................356
3.13.2. AT#SGACTAUTH - PDP Context Authentication Type............................................................358
3.13.3. AT#SGACTCFG - PDP Automatic Context Activation-Reactivation.........................................359
3.13.4. AT#SGACTCFGEXT - Extended PDP Context Configuration..................................................362
3.13.5. AT#SCFG - Socket Configuration............................................................................................364
3.13.6. AT#SCFGEXT - Socket Configuration Extended.....................................................................366
3.13.7. AT#SCFGEXT2 - Socket Configuration Extended 2................................................................369

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3.13.8. AT#SKTRST - Socket Parameters Reset.................................................................................372
3.13.9. AT#SD - Socket Dial ................................................................................................................373
3.13.10. AT#SO - Socket Restore..........................................................................................................376
3.13.11. AT#SH - Socket Shutdown.......................................................................................................377
3.13.12. AT#SL - Socket Listen..............................................................................................................378
3.13.13. AT#SLUDP - Socket Listen UDP .............................................................................................380
3.13.14. AT#SA - Socket Accept............................................................................................................382
3.13.15. AT#SSEND - Send Data in Command Mode...........................................................................383
3.13.16. AT#SSENDEXT - Send Data in Command Mode extended ....................................................385
3.13.17. AT#SRECV - Socket Receive Data in Command Mode ..........................................................387
3.13.18. AT#SSENDUDP - Send UDP Data to a Specific Remote Host................................................389
3.13.19. AT#SSENDUDPEXT - Send UDP Data to a Specific Remote Host EXTENDED ....................391
3.13.20. AT#SLASTCLOSURE - Detect the Cause of a Socket Disconnection.....................................392
3.13.21. AT#SS - Socket Status.............................................................................................................394
3.13.22. AT#SI - Socket Info..................................................................................................................396
3.13.23. AT#ST - Socket Type...............................................................................................................398
3.13.24. AT#PADCMD - PAD Command Features................................................................................400
3.13.25. AT#PADFWD - PAD Forward Character..................................................................................401
3.13.26. AT#BASE64 - Base64 Encoding/Decoding of Socket Sent/Received Data.............................402
3.13.27. AT#FRWL - Firewall Setup.......................................................................................................405
3.13.28. AT#E2SLRI - Socket Listen Ring Indicator...............................................................................407
3.13.29. AT#ICMP - Ping Support..........................................................................................................408
3.13.30. AT#PING - Send PING Request..............................................................................................409
3.13.31. AT#QDNS - Query DNS...........................................................................................................411
3.13.32. AT#NWDNS - DNS from Network............................................................................................412
3.13.33. AT#NTP - Calculate and Update Date and Time with NTP......................................................414
3.13.34. AT#NTPCFG - Configure NTP Parameters..............................................................................416
3.13.35. AT#SCFGEXT3 - Socket Configuration Extended 3................................................................418
FTPEasy ..................................................................................................................................420
3.14.1. AT#FTPAPP - FTP Append .....................................................................................................420
3.14.2. AT#FTPAPPEXT - FTP Append Extended ..............................................................................421
3.14.3. AT#FTPCLOSE - FTP Close Command..................................................................................423
3.14.4. AT#FTPCWD - FTP Change Working Directory ......................................................................424
3.14.5. AT#FTPDELE - FTP Delete.....................................................................................................425
3.14.6. AT#FTPFSIZE - Get File Size from FTP Server.......................................................................426
3.14.7. AT#FTPGET - FTP Get Command ..........................................................................................427
3.14.8. AT#FTPGETPKT - FTP Get in Command Mode......................................................................428
3.14.9. AT#FTPLIST - FTP List............................................................................................................430
3.14.10. AT#FTPMSG - FTP Read Message.........................................................................................431
3.14.11. AT#FTPOPEN - FTP Connection Opening..............................................................................432
3.14.12. AT#FTPPUT - FTP Send File...................................................................................................433
3.14.13. AT#FTPPWD - FTP Print Working Directory............................................................................434
3.14.14. AT#FTPRECV - Receive Data in Command Mode..................................................................435
3.14.15. AT#FTPREST - Set Restart Position for FTP GET..................................................................437
3.14.16. AT#FTPTO - FTP Time Out.....................................................................................................438

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3.14.17. AT#FTPTYPE - FTP Type........................................................................................................439
3.14.18. AT#FTPCFG - FTP Configuration............................................................................................440
SMTP.......................................................................................................................................442
3.15.1. AT#ESMTP - E-mail SMTP Server ..........................................................................................442
3.15.2. AT#EMAILMSG - SMTP Read Message..................................................................................443
3.15.3. AT#SMTPCFG - Configure SMTP Parameters........................................................................444
3.15.4. AT#ERST - E-mail Parameters Reset......................................................................................446
3.15.5. AT#ESAV - E-mail Parameters Save.......................................................................................447
3.15.6. AT#EUSER - E-mail Authentication User Name......................................................................448
3.15.7. AT#EMAILD - E-mail Sending..................................................................................................449
3.15.8. AT#EPASSW - E-mail Authentication Password......................................................................450
3.15.9. AT#EADDR - E-mail Sender Address......................................................................................451
HTTP........................................................................................................................................452
3.16.1. AT#HTTPCFG - Configure HTTP Parameters.........................................................................452
3.16.2. AT#HTTPQRY - Send HTTP GET, HEAD or DELETE Request..............................................454
3.16.3. AT#HTTPSND - Send HTTP POST or PUT request................................................................456
3.16.4. AT#HTTPRCV - Receive HTTP Server Data...........................................................................458
SSL ..........................................................................................................................................459
3.17.1. AT#SSLCFG - Configure General Parameters of a SSL Socket..............................................459
3.17.2. AT#SSLSECCFG - Configure Security Parameters of a SSL Socket......................................462
3.17.3. AT#SSLEN - Enable a SSL Socket..........................................................................................465
3.17.4. AT#SSLD - Open a SSL Socket to a Remote Server...............................................................466
3.17.5. AT#SSLO - Restore a SSL Socket after a +++ ........................................................................469
3.17.6. AT#SSLH - Close a SSL Socket..............................................................................................470
3.17.7. AT#SSLSEND - Send Data through a SSL Socket..................................................................471
3.17.8. AT#SSLRECV - Read Data from a SSL Socket.......................................................................472
3.17.9. AT#SSLS - Report the Status of a SSL Socket........................................................................474
3.17.10. AT#SSLI - Secure Socket Info .................................................................................................476
3.17.11. AT#SSLSENDEXT - Send Data through a SSL Socket in Command Mode............................478
3.17.12. AT#SSLSECDATA - Manage the Security Data ......................................................................480
3.17.13. AT#SSLSECCFG2 - Configure Additional Parameters of a SSL Socket .................................483
CIoT Optimization ....................................................................................................................484
3.18.1. AT+CCIOTOPT - CIoT Optimization Configuration..................................................................484
3.18.2. AT#CCIOTOPT - CIoT Optimization Configuration..................................................................486
IoT Portal..................................................................................................................................488
3.19.1. AT+ODIS - Command for Saving and Retrieving the Odis Parameters...................................488
FOTA & OMA...........................................................................................................................490
3.20.1. FOTA Legacy...........................................................................................................................490
3.20.1.1. AT#OTAUPW - OTA Delta Write..............................................................................................490
3.20.2. OMA-DM..................................................................................................................................491
3.20.2.1. AT#HOSTODIS - Host ODIS Parameters Management ..........................................................491
M2M.........................................................................................................................................493
3.21.1. AT#M2MCHDIR - M2M File System Change Current Directory...............................................493
3.21.2. AT#M2MMKDIR - M2M File System Make Directory...............................................................495
3.21.3. AT#M2MBACKUP - M2M Set Backup Feature........................................................................496

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3.21.4. AT#M2MRMDIR - M2M File System Remove Directory...........................................................497
3.21.5. AT#M2MRUN - M2M Set Run File Permission ........................................................................498
3.21.6. AT+M2M - Enable/disable M2M Application execution............................................................500
3.21.7. AT#M2MDEL - M2M Delete File ..............................................................................................501
3.21.8. AT#M2MWRITE - M2M Write a File.........................................................................................502
3.21.9. AT#M2MLIST - M2M File System List......................................................................................504
3.21.10. AT#M2MREAD - M2M Read File .............................................................................................506
3.21.11. AT#M2MRAM - AppZone RAM Info.........................................................................................507
MQTT.......................................................................................................................................508
3.22.1. AT#MQEN - Enable MQTT Feature.........................................................................................508
3.22.2. AT#MQCFG - Configure MQTT Parameters............................................................................509
3.22.3. AT#MQCFG2 - Configure Additional MQTT Parameters .........................................................511
3.22.4. AT#MQWCFG - Configure MQTT Last Will and Testament.....................................................513
3.22.5. AT#MQTCFG - Configure Timeout Parameters for MQTT Transmission.................................515
3.22.6. AT#MQCONN - Connect and Log in the MQTT Broker ...........................................................516
3.22.7. AT#MQDISC - Log Out and Disconnect from the MQTT Broker..............................................518
3.22.8. AT#MQSUB - Subscribe to a Topic..........................................................................................519
3.22.9. AT#MQUNS - Unsubscribe from a Topic .................................................................................520
3.22.10. AT#MQPUBS - Publish ASCII String .......................................................................................521
3.22.11. AT#MQREAD - Read Messages Received from the MQTT Broker .........................................522
GNSS.......................................................................................................................................524
3.23.1. GNSS Configuration.................................................................................................................524
3.23.1.1. AT$GPSCFG - Set GNSS Configuration Parameters..............................................................524
3.23.2. GNSS Receiver........................................................................................................................527
3.23.2.1. AT$GPSP - GNSS Controller Power Management..................................................................527
3.23.3. GNSS General Management ...................................................................................................528
3.23.3.1. AT$GPSSW - GNSS Software Version....................................................................................528
3.23.4. GNSS Positioning Information..................................................................................................529
3.23.4.1. AT$GPSNMUN - Unsolicited NMEA Data Configuration..........................................................529
3.23.4.2. AT$GPSNMUNEX - Unsolicited NMEA Extended Data Configuration.....................................532
Mobile Broadband....................................................................................................................535
3.24.1. Ethernet Control Mode (ECM)..................................................................................................535
3.24.1.1. AT#ECM - Ethernet Control Model Setup ................................................................................535
3.24.1.2. AT#ECMD - ECM Shutdown....................................................................................................537
PSM (Power Saving Mode)......................................................................................................538
3.25.1. AT+CPSMS - Power Saving Mode Setting ..............................................................................538
3.25.2. AT#CPSMS - Power Saving Mode Setting...............................................................................541
4. LIST OF ACRONYMS.........................................................................................................................543
5. DOCUMENT HISTORY.......................................................................................................................544

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1. INTRODUCTION
Scope
This document is aimed in providing a detailed specification and a comprehensive listing as a reference for the
whole set of AT command.
Audience
Readers of this document should be familiar with Telit modules and their ease of controlling by means of AT
Commands.
Contact Information, Support
For general contact, technical support services, technical questions and report documentation errors contact
Telit Technical Support at:
•TS[email protected]
•TS[email protected]
•TS[email protected]
Alternatively, use:
http://www.telit.com/support
For detailed information about where you can buy the Telit modules or for recommendations on accessories
and components visit:
http://www.telit.com
Our aim is to make this guide as helpful as possible. Keep us informed of your comments and suggestions for
improvements.
Telit appreciates feedback from the users of our information.

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Icons and Text Conventions
SET section –This section provides all information related to SET functionality of
involved AT command. If it has got strictly and relevant SET information, these are
located at section end.
READ section –This section provides all information related to READ functionality of
involved AT command. If it has got strictly and relevant READ information, these are
located at section end.
TEST section –This section provides all information related to TEST functionality of
involved AT command. If it has got strictly and relevant TEST information, these are
located at section end.
Additional info –This section provides any kind of additional and useful information
related to the AT command section as well as command exceptions or special
behavior cases.
REFERENCE section –This section provides useful references (standards or
normative) related to involved AT command.
EXAMPLE section –This section provides useful examples related to involved AT
command.
NOTE section –This section provides all information related to involved AT
commands. Each note can provide a different level of information: danger,
caution/warning and tip/information.
Danger –This information MUST be followed or catastrophic equipment failure or
bodily injury may occur.
Caution or Warning –Alerts the user to important points about integrating the module,
if these points are not followed, the module and end user equipment may fail or
malfunction.
Tip or Information –Provides advice and suggestions that may be useful when
integrating the module.
All dates are in ISO 8601 format, i.e. YYYY-MM-DD.

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2. AT COMMANDS
The Telit wireless module family can be controlled via the serial interface using the standard AT commands1F1F
1
.
The Telit wireless module family is compliant with:
1. Hayes standard AT command set, to maintain the compatibility with existing SW programs.
2. 3GPP TS 27.007 specific AT command and GPRS specific commands.
3. 3GPP TS 27.005 specific AT commands for SMS (Short Message Service) and CBS (Cell Broadcast
Service)
Moreover, Telit wireless module family supports also Telit proprietary AT commands for special purposes.
The following is a description of how to use the AT commands with the Telit wireless module family.
Definitions
The following syntactical definitions apply:
<CR> Carriage return character, is the command line and result code terminator character, which value, in
decimal ASCII between 0 and 255, is specified within parameter S3. The default value is 13.
<LF> Linefeed character, is the character recognized as line feed character. Its value, in decimal ASCII
between 0 and 255, is specified within parameter S4. The default value is 10. The line feed character
is output after carriage return character if verbose result codes are used (V1option used) otherwise, if
numeric format result codes are used (V0option used) it will not appear in the result codes.
<...> Name enclosed in angle brackets is a syntactical element. They do not appear in the command line.
[...] Optional sub parameter of a command or an optional part of TA information response is enclosed in
square brackets. Brackets themselves do not appear in the command line. When sub parameter is not
given in AT commands which have a Read command, new value equals to its previous value. In AT
commands which do not store the values of any of their sub parameters, and so have not a Read
command, which are called action type commands, action should be done based on the
recommended default setting of the sub parameter.
AT Command Syntax
The syntax rules followed by Telit implementation of either Hayes AT commands, GSM commands are very
similar to those of standard basic and extended AT commands
There are two types of extended command:
-Parameter type commands. This type of commands may be "set" (to store a value or values for later
use), "read" (to determine the current value or values stored), or "tested" (to determine ranges of
values supported). Each of them has a test command (trailing =?) to give information about the type
of its sub parameters; they also have a Read command (trailing?) to check the current values of sub
parameters.
-Action type commands. This type of command may be "executed" or "tested".
•"executed" to invoke a function of the equipment, which generally involves more than the simple
storage of a value for later use
•"tested" to determine:
oif sub parameters are associated with the action, the ranges of sub parameters values that
are supported; if the command has no sub parameters, issuing the correspondent Test
command (trailing =?) raises the result code "ERROR".
Note: issuing the Read command (trailing?) causes the command to be executed.
owhether or not the equipment implements the Action Command (in this case issuing the
correspondent Test command - trailing =? - returns the OK result code), and, if sub
1
The AT is an ATTENTION command and is used as a prefix to other parameters in a string. The AT
command combined with other parameters can be set up in the communications package or typed in manually
as a command line instruction combined with other parameters can be set up in the communications package
or typed in manually as a command line instruction.

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parameters are associated with the action, the ranges of sub parameters values that are
supported.
Action commands don’t store the values of any of their possible sub parameters.
Moreover:
The response to the Test Command (trailing =?) may be changed in the future by Telit to allow the description
of new values/functionalities.
If all the sub parameters of a parameter type command +CMD are optional, issuing AT+CMD=<CR> causes
the OK result code to be returned and the previous values of the omitted sub parameters to be retained.
2.2.1. String Type Parameters
A string, either enclosed between quotes or not, is a valid string type parameter input. According to V25.ter
space characters are ignored on the command line and may be used freely for formatting purposes, unless
they are embedded in numeric or quoted string constants; therefore a string containing a space character has
to be enclosed between quotes to be considered a valid string type parameter (e.g. typing
AT+COPS=1,0,"A1" is the same as typing AT+COPS=1,0,A1; typing AT+COPS=1,0,"A BB" is different from
typing AT+COPS=1,0,A BB).
A string is always case sensitive.
A small set of commands requires always to write the input string parameters within quotes: this is explicitly
reported in the specific descriptions.
2.2.2. Command Lines
A command line is made up of three elements: the prefix, the body and the termination character.
The command line prefix consists of the characters "AT" or "at", or, to repeat the execution of the previous
command line, the characters "A/" or "a/" or AT#/ or at#/.
The termination character may be selected by a user option (parameter S3), the default being <CR>.
The basic structures of the command line are:
•ATCMD1<CR> where AT is the command line prefix, CMD1 is the body of a basic command (nb:
the name of the command never begins with the character "+") and <CR> is the command line
terminator character
•ATCMD2=10<CR> where 10 is a sub parameter
•AT+CMD1;+CMD2=, ,10<CR> These are two examples of extended commands (nb: the name of
the command always begins with the character "+"2F2F
2
). They are delimited with semicolon. In the
second command the sub parameter is omitted.
•+CMD1?<CR> This is a Read command for checking current sub parameter values
•+CMD1=?<CR> This is a test command for checking possible sub parameter values
These commands might be performed in a single command line as shown below:
ATCMD1 CMD2=10+CMD1;+CMD2=, ,10;+CMD1?;+CMD1=?<CR>
anyway, it is always preferable to separate into different command lines the basic commands and the extended
commands; furthermore, it is suggested to avoid placing several action commands in the same command line,
because if one of them fails, then an error message is received but it is not possible to argue which one of
them has failed the execution.
2
The set of proprietary AT commands differentiates from the standard one because the name of each
of them begins with either "@", "#", "$" or "*". Proprietary AT commands follow the same syntax rules
as extended commands

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If command V1 is enabled (verbose responses codes) and all commands in a command line has been
performed successfully, result code <CR><LF>OK<CR><LF> is sent from the TA to the TE, if sub parameter
values of a command are not accepted by the TA or command itself is invalid, or command cannot be
performed for some reason, result code <CR><LF>ERROR<CR><LF> is sent and no subsequent commands
in the command line are processed.
If command V0 is enabled (numeric responses codes), and all commands in a command line has been
performed successfully, result code 0<CR> is sent from the TA to the TE, if sub-parameter values of a
command are not accepted by the TA or command itself is invalid, or command cannot be performed for some
reason, result code 4<CR> and no subsequent commands in the command line are processed.
In case of errors depending on ME operation, ERROR (or 4) response may be replaced by +CME ERROR:
<err> or +CMS ERROR: <err>.
The command line buffer accepts a maximum of 400 characters. If this number is
exceeded none of the commands will be executed and TA returns ERROR.
2.2.2.1. ME Error Result Code - +CME ERROR: <err>
This is NOT a command, it is the error response to +Cxxx 3GPP TS 27.007 commands.
Syntax: +CME ERROR: <err>
Parameter: <err> - error code can be either numeric or verbose (see +CMEE). The possible values of <err>
are reported in the table:
Numeric Format 3
Verbose Format 4
0
phone failure
1
no connection to phone
2
phone adaptor link reserved
3
operation not allowed
4
operation not supported
5
PH-SIM PIN required
6
PH-FSIM PIN required
7
PH-FSIM PUK required
10
SIM not inserted
11
SIM PIN required
12
SIM PUK required
13
SIM failure
14
SIM busy
15
SIM wrong
16
incorrect password
17
SIM PIN2 required
18
SIM PUK2 required
20
memory full
21
invalid index
22
not found
23
memory failure
24
text string too long
25
invalid characters in text string
26
dial string too long
27
invalid characters in dial string
30
no network service
31
network timeout
32
network not allowed - emergency calls only
34
numeric parameter instead of text parameter
35
text parameter instead of numeric parameter
36
numeric parameter out of bounds
37
text string too short
3
Not all modules support the error codes shown in the table.
4
There could be small variations in the message depending on the module in use.

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Numeric Format 3
Verbose Format 4
38
The GPIO Pin is already used
40
network personalization PIN required
41
network personalization PUK required
42
network subset personalization PIN required
43
network subset personalization PUK required
44
service provider personalization PIN required
45
service provider personalization PUK required
46
corporate personalization PIN required
47
corporate personalization PUK required
49
EAP method not supported
50
Invalid EAP parameter
51
Parameter length error for all Auth commands
52
Temporary error for all Auth command
53
not verified hidden key
100
unknown
103
Illegal MESSAGE
106
Illegal ME
107
GPRS services not allowed
111
PLMN not allowed
112
Location area not allowed
113
Roaming not allowed in this location area
132
service option not supported
133
requested service option not subscribed
134
service option temporarily out of order
148
unspecified GPRS error
149
PDP authentication failure
150
invalid mobile class
257
network rejected request
258
retry operation
259
invalid deflected to number
260
deflected to own number
261
unknown subscriber
262
service not available
263
unknown class
264
unknown network message
273
Minimum TFT per PDP address error
274
Duplicate TFT eval prec index
275
Invalid TFT param combination
277
Invalid number of parameters
278
Invalid Parameter
320
Call index error
321
Call state error
322
Sys state error
323
Parameters error
550
generic undocumented error
551
wrong state
552
wrong mode
553
context already activated
554
stack already active
555
activation failed
556
context not opened
557
can not setup socket
558
can not resolve DN
559
time-out in opening socket
560
can not open socket
561
remote disconnected or time-out
562
connection failed
563
tx error
564
already listening
565
socket disconnection
566
can not resume socket
567
ip version type incompatible
568
ipv6 not enabled

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Numeric Format 3
Verbose Format 4
569
600
Generic undocumented error
601
wrong state
602
Can not activate
603
Can not resolve name
604
Can not allocate control socket
605
Can not connect control socket
606
Bad or no response from server
607
Not connected
608
Already connected
609
Context down
612
Resource used by other instance
613
Data socket yet opened in cmdmode
614
FTP CmdMode data socket closed
615
FTP not connected
616
FTP disconnected
617
FTP read command closed
618
FTP read command error
619
FTP write command closed
620
FTP write command error
621
FTP read data closed
622
FTP read data error
623
FTP write data closed
624
FTP write data error
625
FTP host not found
626
FTP accept failure
627
FTP listen failure
628
FTP bind failure
629
FTP file create failure
630
FTP file get failure
631
FTP file put failure
632
FTP file not found
633
FTP timed out
634
FTP login incorrect
635
FTP close error
636
FTP server not ready
637
FTP server shutdown
638
FTP unexpected reply
639
FTP user ID and password don't match
640
FTP user ID and password don't match
641
FTP user already logged in
642
FTP open channel timeout
643
FTP communication timeout
644
FTP unknown error
657
Network survey error (No Carrier)
658
Network survey error (Busy)
659
Network survey error (Wrong request)
660
Network survey error (Aborted)
680
LU processing
681
Network search aborted
682
PTM mode
683
Network search terminated
684
CSG Search processing
690
Active call state
691
RR connection established
770
SIM invalid
900
No Response for AT Command
1000
SSL not activated
1001
SSL certs and keys wrong or not stored
1002
SSL generic error
1003
SSL already activated
1004
SSL error during handshake
1005
SSL socket error
1006
SSL invalid state