Siemens Mobile MC35i Terminal Setup guide

m o bile
MC35i
MC35i Terminal
Siemens Cellular Engine
Version: 01.03
DocId: MC35i_ATC_V01.03

MC35i AT Command Set
MC35i_ATC_V01.03 Page 2 of 444 5/7/04
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General Notes
Product is deemed accepted by recipient and is provided without interface to recipient’s products. The documen-
tation and/or product are provided for testing, evaluation, integration and information purposes. The documen-
tation and/or product are provided on an “as is” basis only and may contain deficiencies or inadequacies. The
documentation and/or product are provided without warranty of any kind, express or implied. To the maximum
extent permitted by applicable law, Siemens further disclaims all warranties, including without limitation any im-
plied warranties of merchantability, completeness, fitness for a particular purpose and non-infringement of third-
party rights. The entire risk arising out of the use or performance of the product and documentation remains with
recipient. This product is not intended for use in life support appliances, devices or systems where a malfunction
of the product can reasonably be expected to result in personal injury. Applications incorporating the described
product must be designed to be in accordance with the technical specifications provided in these guidelines. Fail-
ure to comply with any of the required procedures can result in malfunctions or serious discrepancies in results.
Furthermore, all safety instructions regarding the use of mobile technical systems, including GSM products,
which also apply to cellular phones must be followed. Siemens or its suppliers shall, regardless of any legal the-
ory upon which the claim is based, not be liable for any consequential, incidental, direct, indirect, punitive or other
damages whatsoever (including, without limitation, damages for loss of business profits, business interruption,
loss of business information or data, or other pecuniary loss) arising out the use of or inability to use the docu-
mentation and/or product, even if Siemens has been advised of the possibility of such damages. The foregoing
limitations of liability shall not apply in case of mandatory liability, e.g. under the German Product Liability Act, in
case of intent, gross negligence, injury of life, body or health, or breach of a condition which goes to the root of
the contract. However, claims for damages arising from a breach of a condition, which goes to the root of the
contract, shall be limited to the foreseeable damage, which is intrinsic to the contract, unless caused by intent or
gross negligence or based on liability for injury of life, body or health. The above provision does not imply a
change on the burden of proof to the detriment of the recipient. Subject to change without notice at any time. The
interpretation of this general note shall be governed and construed according to German law without reference
to any other substantive law.
Copyright
Transmittal, reproduction, dissemination and/or editing of this document as well as utilization of its contents and
communication thereof to others without express authorization are prohibited. Offenders will be held liable for
payment of damages. All rights created by patent grant or registration of a utility model or design patent are re-
served.
Copyright © Siemens AG May 7, 2004
Document Name: MC35i AT Command Set
Version: 01.03
Date: May 7, 2004
DocId: MC35i_ATC_V01.03
Status Confidential / Released

MC35i AT Command Set
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1. Introduction............................................................................................................................................ 13
1.1 Scope of the document ................................................................................................................. 13
1.2 Related documents ....................................................................................................................... 14
1.3 Document conventions.................................................................................................................. 15
1.3.1 Quick reference table ....................................................................................................... 15
1.3.2 Superscript notation for parameters and values............................................................... 16
1.4 AT Command Syntax .................................................................................................................... 17
1.4.1 Using parameters ............................................................................................................. 17
1.4.2 Combining AT commands on the same command line.................................................... 18
1.5 Supported character sets .............................................................................................................. 19
1.5.1 GSM alphabet tables and UCS2 character values........................................................... 21
1.5.2 UCS2 and GSM data coding and conversion for SMS text mode.................................... 23
1.5.2.1 Implementing output of SIM data to the Terminal (direction TA to TE) ............................. 23
1.5.2.2 Implementing input of Terminal data to SIM (direction TE to TA) ..................................... 24
1.6 Serial Interface Flow Control......................................................................................................... 26
1.6.1 Software Flow Control (XON/OFF Handshake) ............................................................... 26
1.6.2 Hardware Flow Control (RTS/CTS Handshake)............................................................... 26
1.7 Unsolicited Result Code Presentation........................................................................................... 27
1.7.1 Communication between Customer Application and MC35i ............................................ 27
1.8 Errors and Messages .................................................................................................................... 28
2. Configuration Commands..................................................................................................................... 29
2.1 AT&F Set all current parameters to manufacturer defaults......................................................... 29
2.2 AT&V Display current configuration ............................................................................................30
2.2.1 AT&V responses .............................................................................................................. 30
2.3 AT&W Stores current configuration to user defined profile ......................................................... 32
2.4 ATQ Set result code presentation mode ..................................................................................... 33
2.5 ATV Set result code format mode ...............................................................................................34
2.5.1 Verbose and numeric result codes................................................................................... 34
2.6 ATX Set CONNECT result code format and call monitoring ....................................................... 36
2.7 ATZ Set all current parameters to user defined profile................................................................ 37
2.8 AT+CFUN Set phone functionality .............................................................................................. 38
2.8.1 Wake up the ME from SLEEP mode ................................................................................ 42
2.9 AT^SMSO Switch off mobile station............................................................................................ 43
2.10 AT+GCAP Request complete TA capabilities list........................................................................ 44
2.11 AT+CMEE Mobile Equipment Error Message Format ................................................................ 45
2.11.1 CME ERRORS related to GSM 07.07.............................................................................. 46
2.11.2 GPRS-related CME ERRORS.......................................................................................... 47
2.11.3 CMS ERRORS related to GSM 07.05.............................................................................. 48
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2.12 AT+CSCS Select TE character set ............................................................................................. 51
2.13 AT^SM20 Set M20 compatibility mode ....................................................................................... 53
3. Status Control Commands ................................................................................................................... 55
3.1 AT+CMER Mobile Equipment Event Reporting .......................................................................... 55
3.2 AT+CIND Indicator control .......................................................................................................... 58
3.3 AT^SIND Extended Indicator Control.......................................................................................... 62
3.4 AT+CEER Extended Error Report............................................................................................... 65
3.4.1 Cause Location ID for the extended error report.............................................................. 67
3.4.2 GSM release cause for L3 Radio Resource (RR) ............................................................ 68
3.4.3 SIEMENS release cause for L3 Radio Resource (RR) .................................................... 69
3.4.4 GSM release cause for Mobility Management (MM) ........................................................ 69
3.4.5 SIEMENS release cause for L3 Mobility Management (MM) ........................................... 70
3.4.6 GSM release cause for L3 Call Control (CC) ................................................................... 70
3.4.7 SIEMENS release cause for L3 Call Control (CC) ........................................................... 72
3.4.8 SIEMENS release cause for L3 Advice of Charge (AOC)................................................ 73
3.4.9 GSM Release cause for Supplementary Service Call...................................................... 73
3.4.10 SIEMENS release cause for Call-related Supplementary Services (CRSS).................... 74
3.4.11 SIEMENS release cause for Session Management (SM) ................................................ 75
3.4.12 GSM cause for L3 Protocol module or other local cause ................................................ 76
3.4.13 SIEMENS release cause for GPRS API........................................................................... 76
3.4.14 SIEMENS release cause for Embedded Netcore............................................................. 76
3.5 ATS18 Extended call release report............................................................................................77
3.6 AT+CPAS Mobile equipment activity status................................................................................ 79
3.7 AT+WS46 Select wireless network ............................................................................................. 80
4. Serial Interface Control Commands..................................................................................................... 81
4.1 AT\Q Flow control........................................................................................................................ 81
4.2 AT&C Set circuit Data Carrier Detect (DCD) function mode ....................................................... 82
4.3 AT&D Set circuit Data Terminal Ready (DTR) function mode..................................................... 83
4.4 AT&S Set circuit Data Set Ready (DSR) function mode ............................................................. 84
4.5 ATE Enable command echo........................................................................................................ 85
4.6 AT+ILRR Set TE-TA local rate reporting..................................................................................... 86
4.7 AT+IPR Set fixed local rate ......................................................................................................... 88
4.7.1 Autobauding ..................................................................................................................... 90
4.8 AT+CMUX Enter multiplex mode ................................................................................................ 91
4.8.1 Restrictions on Multiplex mode ........................................................................................ 92
5. Security Commands .............................................................................................................................. 95
5.1 AT+CPIN Enter PIN .................................................................................................................... 95
5.1.1 What to do if PIN or password authentication fails?......................................................... 97
5.2 AT+CPIN2 Enter PIN2 ................................................................................................................ 99
5.3 AT^SPIC Display PIN counter...................................................................................................102
5.4 AT+CLCK Facility lock .............................................................................................................. 107
5.5 AT^SLCK Facility lock ............................................................................................................... 113

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5.6 AT+CPWD Change Password .................................................................................................. 114
5.7 AT^SPWD Change Password................................................................................................... 118
6. Identification Commands.................................................................................................................... 119
6.1 ATI Display product identification information ........................................................................... 119
6.2 AT+CGMI Request manufacturer identification......................................................................... 120
6.3 AT+GMI Request manufacturer identification ........................................................................... 121
6.4 AT+CGMM Request model identification .................................................................................. 122
6.5 AT+GMM Request TA model identification ............................................................................... 123
6.6 AT+CGMR Request revision identification of software status................................................... 124
6.7 AT+GMR Request TA revision identification of software status................................................ 125
6.8 AT+CGSN Request product serial number identification (IMEI) identical to GSN .................... 126
6.9 AT+GSN Request TA serial number identification (IMEI) ......................................................... 127
6.10 AT+CIMI Request international mobile subscriber identity ....................................................... 128
7. Call related Commands....................................................................................................................... 129
7.1 ATA Answer a call..................................................................................................................... 129
7.2 ATD Mobile originated call to dial a number.............................................................................. 131
7.3 ATD><mem><n> Originate call to phone number in memory................................................... 134
7.4 ATD><n> Originate call to phone number selected from active memory.................................. 136
7.5 ATD><str> Originate call to phone number in memory with corresponding field ...................... 138
7.6 ATDI Mobile originated call to dialable ISDN number <n>........................................................ 140
7.7 ATDL Redial last telephone number used................................................................................. 141
7.8 ATH Disconnect existing connection......................................................................................... 142
7.9 AT+CHUP Hang up call ............................................................................................................ 143
7.10 ATS0 Set number of rings before automatically answering a call ............................................. 144
7.11 ATS6 Set pause before blind dialing ......................................................................................... 145
7.12 ATS7 Set number of seconds to wait for connection completion .............................................. 146
7.13 ATS8 Set number of seconds to wait for comma dialing modifier............................................. 147
7.14 ATS10 Set disconnect delay after indicating the absence of data carrier ................................. 148
7.15 ATP Select pulse dialing ........................................................................................................... 149
7.16 ATO Switch from command mode to data mode / PPP online mode........................................ 150
7.17 +++ Switch from data mode to command mode ....................................................................... 151
7.18 ATT Select tone dialing ............................................................................................................. 152
7.19 AT+CBST Select bearer service type ....................................................................................... 153
7.20 AT+CRLP Select radio link protocol parameters for originated non-transparent data calls ...... 155
7.21 AT+CLCC List current calls of ME ............................................................................................ 157
7.22 AT+CR Service reporting control ..............................................................................................160
7.23 AT+CRC Set Cellular Result Codes for incoming call indication .............................................. 162
7.24 AT+CSNS Single Numbering Scheme...................................................................................... 164
7.25 AT^SCNI List Call Number Information..................................................................................... 166
7.26 AT^SLCD Display Last Call Duration ........................................................................................ 168

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7.27 AT^STCD Display Total Call Duration....................................................................................... 169
8. Network Service Commands .............................................................................................................. 170
8.1 AT+COPN Read operator names ............................................................................................. 170
8.2 AT+COPS Operator selection ................................................................................................... 172
8.3 AT+CREG Network registration ................................................................................................ 175
8.4 AT+CSQ Signal quality ............................................................................................................. 178
8.5 AT^SMONC Cell Monitoring......................................................................................................180
8.6 AT^MONI Monitor idle mode and dedicated mode ................................................................... 182
8.6.1 AT^MONI responses ...................................................................................................... 183
8.6.2 Service states................................................................................................................. 184
8.6.3 Notes .............................................................................................................................. 184
8.7 AT^MONP Monitor neighbour cells ........................................................................................... 186
8.7.1 AT^MONP responses..................................................................................................... 187
8.8 AT^SMONG GPRS Monitor ...................................................................................................... 188
8.8.1 AT^SMONG Cell Info Table ........................................................................................... 189
8.9 AT^SHOM Display Homezone .................................................................................................. 190
8.10 AT^SPLM Read the PLMN list .................................................................................................. 191
8.11 AT^SPLR Read entry from the preferred operators list............................................................. 192
8.12 AT^SPLW Write an entry to the preferred operators list ........................................................... 194
9. Supplementary Service Commands .................................................................................................. 195
9.1 AT+CACM Accumulated call meter (ACM) reset or query ........................................................ 195
9.2 AT^SACM Advice of charge and query of ACM and ACMmax ................................................. 197
9.3 AT+CAMM Accumulated call meter maximum (ACMmax) set or query.................................... 199
9.4 AT+CAOC Advice of Charge information.................................................................................. 201
9.5 AT+CCUG Closed User Group ................................................................................................. 203
9.6 AT+CCFC Call forwarding number and conditions control ....................................................... 205
9.7 AT+CCWA Call Waiting ............................................................................................................ 209
9.8 AT+CHLD Call Hold and Multiparty........................................................................................... 213
9.9 AT+CLIP Calling line identification presentation ....................................................................... 216
9.10 AT+CLIR Calling line identification restriction ........................................................................... 218
9.11 AT+CPUC Price per unit and currency table............................................................................. 220
9.12 AT+CSSN Supplementary service notifications ........................................................................ 222
9.13 AT+CUSD Supplementary service notifications........................................................................ 224
10. GPRS Commands ................................................................................................................................ 226
10.1 AT+CGACT PDP context activate or deactivate ....................................................................... 226
10.2 AT+CGATT GPRS attach or detach ......................................................................................... 228
10.3 AT+CGDATA Enter data state .................................................................................................. 230
10.4 AT+CGDCONT Define PDP Context ........................................................................................ 232
10.5 AT+CGPADDR Show PDP address ......................................................................................... 234
10.6 AT+CGQMIN Quality of Service Profile (Minimum acceptable) ................................................ 235

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10.7 AT+CGQREQ Quality of Service Profile (Requested) .............................................................. 239
10.8 AT+CGREG GPRS network registration status ........................................................................ 243
10.9 AT+CGSMS Select service for MO SMS messages................................................................. 245
10.10 AT^SGACT Query all PDP context activations ......................................................................... 247
10.11 AT^SGAUTH Set type of authentication for PPP connection.................................................... 249
10.12 AT^SGCONF Configuration of GPRS related Parameters ...................................................... 250
10.13 ATD*99# Request GPRS service.............................................................................................. 252
10.14 ATD*98# Request GPRS IP service ......................................................................................... 254
10.15 ATH Manual rejection of a network request for PDP context activation.................................... 255
10.16 Using GPRS AT commands (Examples)..................................................................................... 256
10.17 Using the GPRS dial command ATD .......................................................................................... 258
11. FAX Commands ................................................................................................................................... 259
11.1 FAX parameters .......................................................................................................................... 259
11.2 AT+FBADLIN Bad Line Threshold ............................................................................................ 262
11.3 AT+FBADMUL Error Threshold Multiplier ................................................................................. 263
11.4 AT+FBOR Query data bit order.................................................................................................264
11.5 AT+FCIG Query or set the Local Polling ID .............................................................................. 265
11.6 AT+FCLASS Fax: Select, read or test service class................................................................. 266
11.7 AT+FCQ Copy Quality Checking .............................................................................................. 268
11.8 AT+FCR Capability to receive................................................................................................... 269
11.9 AT+FDCC Query or set capabilities .......................................................................................... 270
11.10 AT+FDFFC Data Compression Format Conversion ................................................................. 271
11.11 AT+FDIS Query or set session parameters .............................................................................. 272
11.12 AT+FDR Begin or continue phase C data reception ................................................................. 273
11.13 AT+FDT Data Transmission...................................................................................................... 274
11.14 AT+FET End a page or document ............................................................................................ 275
11.15 AT+FK Kill operation, orderly FAX abort ................................................................................... 276
11.16 AT+FLID Query or set the Local Id setting capabilities ............................................................. 277
11.17 AT+FMDL Identify Product Model ............................................................................................ 278
11.18 AT+FMFR Request Manufacturer Identification........................................................................ 279
11.19 AT+FOPT Set bit order independently ...................................................................................... 280
11.20 AT+FPHCTO DTE Phase C Response Timeout....................................................................... 281
11.21 AT+FREV Identify Product Revision ......................................................................................... 282
11.22 AT+FRH Receive Data Using HDLC Framing .......................................................................... 283
11.23 AT+FRM Receive Data ............................................................................................................. 284
11.24 AT+FRS Receive Silence.......................................................................................................... 285
11.25 AT+FTH Transmit Data Using HDLC Framing.......................................................................... 286
11.26 AT+FTM Transmit Data............................................................................................................. 287
11.27 AT+FTS Stop Transmission and Wait....................................................................................... 288
11.28 AT+FVRFC Vertical resolution format conversion .................................................................... 289

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12. Short Message Service (SMS) Commands........................................................................................ 290
12.1 SMS parameters ......................................................................................................................... 290
12.2 AT+CMGC Send an SMS command......................................................................................... 294
12.3 AT+CMGD Delete SMS message............................................................................................. 295
12.4 AT+CMGF Select SMS message format .................................................................................. 296
12.5 AT+CMGL List SMS messages from preferred store................................................................ 297
12.6 AT+CMGR Read SMS messages............................................................................................. 299
12.7 AT+CMGS Send SMS message ............................................................................................... 301
12.8 AT+CMGW Write SMS messages to memory .......................................................................... 303
12.9 AT+CMSS Send SMS messages from storage ........................................................................ 305
12.10 AT+CNMA New SMS message acknowledge to ME/TE, only phase 2+ .................................. 306
12.11 AT+CNMI New SMS message indications................................................................................ 308
12.12 AT+CPMS Preferred SMS message storage............................................................................ 312
12.13 AT+CSCA SMS service centre address.................................................................................... 314
12.14 AT+CSCB Select Cell Broadcast Message Indication .............................................................. 315
12.15 AT+CSDH Show SMS text mode parameters........................................................................... 317
12.16 AT+CSMP Set SMS text mode parameters .............................................................................. 318
12.17 AT+CSMS Select Message Service.......................................................................................... 320
12.18 AT^SLMS List SMS Memory Storage ....................................................................................... 322
12.19 AT^SMGL List SMS messages from preferred store without setting status to REC READ ...... 324
12.20 AT^SMGO Set or query SMS overflow presentation mode or query SMS overflow ................. 326
12.21 AT^SMGR Read SMS message without setting status to REC READ ..................................... 328
12.22 AT^SSCONF SMS Command Configuration ........................................................................... 329
12.23 AT^SSDA Set SMS Display Availability .................................................................................... 330
12.24 AT^SSMSS Set Short Message Storage Sequence ................................................................. 332
13. SIM related Commands ....................................................................................................................... 333
13.1 AT+CRSM Restricted SIM Access............................................................................................ 333
13.2 AT^SCKS Query SIM and Chip Card Holder Status ................................................................. 336
13.3 AT^SSET Indicate SIM data ready............................................................................................ 338
13.4 AT^SCID Display SIM card identification number ..................................................................... 340
13.5 AT+CXXCID Display card ID..................................................................................................... 341
14. SIM Application Toolkit (SAT) Commands........................................................................................ 342
14.1 AT^SSTA SAT Interface Activation ........................................................................................... 342
14.2 ^SSTN SAT Notification ............................................................................................................ 344
14.3 AT^SSTGI SAT Get Information ............................................................................................... 346
14.4 AT^SSTR SAT Response .........................................................................................................348
15. Phonebook Commands....................................................................................................................... 350
15.1 Sort Order for Phonebooks ......................................................................................................... 350
15.2 AT+CPBR Read from Phonebook............................................................................................. 351
15.3 AT+CPBS Select phonebook memory storage ......................................................................... 354

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15.4 AT+CPBW Write into Phonebook ............................................................................................. 356
15.5 AT^SPBC Search the first entry in the sorted telephone book.................................................. 359
15.6 AT^SPBD Purge phonebook memory storage.......................................................................... 361
15.7 AT^SPBG Read current Phonebook entries ............................................................................. 363
15.8 AT^SPBS Step through the selected phonebook alphabetically............................................... 367
15.9 AT^SDLD Delete the 'last number redial' memory .................................................................... 371
16. Audio Commands ................................................................................................................................ 372
16.1 Audio programming model .......................................................................................................... 372
16.2 ATL Set monitor speaker loudness ........................................................................................... 373
16.3 ATM Set monitor speaker mode................................................................................................ 374
16.4 AT+CLVL Loudspeaker volume level........................................................................................ 375
16.5 AT+CMUT Mute control ............................................................................................................ 377
16.6 AT+VTD Tone duration ............................................................................................................. 378
16.7 AT+VTS DTMF and tone generation......................................................................................... 379
16.8 AT^SAIC Audio Interface Configuration .................................................................................... 381
16.9 AT^SNFA Set or query of microphone attenuation .................................................................. 383
16.10 AT^SNFD Set audio parameters to manufacturer default values ............................................. 385
16.11 AT^SNFI Set microphone path parameters .............................................................................. 386
16.12 AT^SNFM Mute microphone .....................................................................................................388
16.13 AT^SNFO Set audio output (= loudspeaker path) parameter ................................................... 390
16.14 AT^SNFPT Set progress tones .................................................................................................392
16.15 AT^SNFS Select audio hardware set........................................................................................ 393
16.16 AT^SNFV Set loudspeaker volume........................................................................................... 397
16.17 AT^SNFW Write audio setting in non-volatile store .................................................................. 399
16.18 AT^SRTC Ring tone configuration ............................................................................................ 400
17. Hardware related Commands ............................................................................................................. 403
17.1 AT+CALA Set alarm time ......................................................................................................... 403
17.1.1 Summary of AT commands available in Alarm mode .................................................... 406
17.2 AT+CCLK Real Time Clock....................................................................................................... 407
17.3 AT^SBC Battery charge and charger control ............................................................................ 408
17.4 AT^SCTM Set critical operating temperature presentation mode or query temperature........... 410
17.4.1 Deferred shutdown .........................................................................................................413
17.5 AT^SSYNC Configure SYNC Pin.............................................................................................. 414
17.5.1 ME status indicated by status LED patterns................................................................... 415
18. Miscellaneous Commands.................................................................................................................. 416
18.1 A/ Repeat previous command line ............................................................................................ 416
18.2 ATS3 Write command line termination character...................................................................... 417
18.3 ATS4 Set response formatting character .................................................................................. 418
18.4 ATS5 Write command line editing character............................................................................. 419

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19. Appendix .............................................................................................................................................. 420
19.1 Restricted access to SIM data after SIM PIN authentication....................................................... 420
19.2 List of Star-Hash (*#) Codes ....................................................................................................... 421
19.3 Available AT Commands and Dependency on SIM PIN ............................................................. 424
19.4 AT Command Settings storable with AT&W................................................................................ 431
19.5 Factory Default Settings Restorable with AT&F .......................................................................... 434
19.6 Summary of Unsolicited Result Codes (URC)............................................................................. 437
19.7 Alphabetical List of AT Commands ............................................................................................. 439

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Table 1.1: Product specific use of AT commands ...................................................................................... 13
Table 1.2: Symbols used to mark the type of parameters ...........................................................................16
Table 1.3: Symbols used to indicate the correlations with other commands ............................................... 16
Table 1.4: Symbols used to mark different types of default values of parameters ..................................... 16
Table 2.1: Current configuration on ASC0 / MUX channel 1 (example) ...................................................... 31
Table 2.2: Current configuration on MUX channels 2 and 3 (example) ...................................................... 31
Table 2.3: Wake-up events in NON-CYCLIC and CYCLIC SLEEP modes ................................................. 42
Table 4.1: Availability of AT Commands on Virtual Channels .................................................................... 92
Table 4.2: Summary of AT commands with Different Behavior in Multiplex Mode ..................................... 93
Table 17.1: List of AT commands available in Alarm mode ........................................................................ 406
Table 17.2: Modes of the LED and indicated ME functions......................................................................... 415
Table 19.1: List of Star-Hash (*#) Codes .................................................................................................... 421
Table 19.2: Abbreviations of Codes and Parameters used in Table 19.1, List of Star-Hash (*#) Codes ... 422
Table 19.3: Possible Star-Hash Command Responses ............................................................................. 423
Table 19.4: Star-Hash Codes for Supplementary Services ........................................................................ 423
Table 19.5: Available AT Commands and Dependency on SIM PIN........................................................... 424
Table 19.6: Settings Stored to User Profile on ASC0 / MUX Channel 1...................................................... 431
Table 19.7: Settings Stored to User Profile on MUX Channels 2 and 3 ...................................................... 432
Table 19.8: Factory Default Settings Restorable with AT&F ....................................................................... 434
Table 19.9: Summary of Unsolicited Result Codes (URC).......................................................................... 437
Table 19.10: Alphabetical List of AT Commands........................................................................................... 439
List of Tables

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Figure 1.1: Main character table of GSM 03.38 alphabet ............................................................................. 21
Figure 1.2: Extension character table of GSM 03.38 alphabet ..................................................................... 22
Figure 16.1: Audio programming model........................................................................................................ 372
List of Figures

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1. Introduction
1.1 Scope of the document
This document presents the AT Command Set for the Siemens Cellular Engines
MC35i Version 01.03
MC35i Terminal Version 01.03.
Before using the Cellular Engine or upgrading to a new firmware version please read the latest product informa-
tion provided in the Release Notes [1].
More information is available at the Siemens Website: http://www.siemens.com/wm.
If features differ between MC35i and MC35i Terminal this is noted in the section that refers to the AT command.
At present the following features are concerned:
Table 1.1: Product specific use of AT commands
AT command Module version Terminal version
AT+ILRR Maximum bit rate: 230400 bps Maximum bit rate: 115200 bps
AT+IPR Maximum bit rate: 230400 bps Maximum bit rate: 115200 bps
AT+CALA Alarm mode and reminder message fully
applicable
Does not support Alarm mode. Please
ignore any information relating to the
subject.
The reminder message can be used as
described.
AT^SAIC All parameters usable as described. Additional recommendations for using
audio modes 2, 3 and 6 with MC35i Ter-
minal.
AT^SSYNC SYNC pin may be assigned different
functions: <mode> 0 or 1.
SYNC pin supports only <mode>=1 .
(LED status)
AT^SBC All functions fully applicable Command not applicable

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1.2 Related documents
[1] MC35i Release Notes, Version 01.03
[2] MC35i Hardware Interface Description, Version 01.03
[3] MC35i Terminal Hardware Interface Description
[4] GPRS Startup User's Guide
[5] Remote-SAT User's Guide
[6] Multiplexer User's Guide
[7] Multiplex Driver Developer's Guide for Windows 2000 and Windows XP
[8] Multiplex Driver Installation Guide for Windows 2000 and Windows XP
[9] Application Note 02: Audio Interface Design
[10] Application Note 16: Updating MC35i Firmware
[11] Application Note 24: Application Developer's Guide
[12] ISO/IEC10646: "Universal Multiple-Octet Coded Character Set (UCS)"; UCS2, 16 bit coding
[13] ITU-T Recommendation V.24: List of definitions for interchange circuits between data terminal equipment
(DTE) and data circuit-terminating equipment (DCE)
[14] ITU-T Recommendation V.25ter: Serial asynchronous automatic dialling and control
[15] 3GPP TS 100 918/EN 300 918 (GSM 02.04): General on supplementary services
[16] 3GPP TS 100 907 (GSM 02.30): Man-Machine Interface (MMI) of the Mobile Station (MS)
[17] 3GPP TS 23.038 (GSM 03.38): Alphabets and language specific information
[18] 3GPP TS 27.005 (GSM 07.05): Use of Data Terminal Equipment - Data Circuit terminating Equipment (DTE
- DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS)
[19] 3GPP TS 27.007 (GSM 07.07): AT command set for User Equipment (UE)
[20] 3GPP TS 27.060 (GSM 07.60): Mobile Station (MS) supporting Packet Switched Services
[21] 3GPP TS 51.011 (GSM 11.11): Specification of the Subscriber Identity Module - Mobile Equipment (SIM -
ME) interface
[22] 3GPP TS 11.14 (GSM 11.14): Specification of the SIM Application Toolkit for the Subscriber Identity Module
- Mobile Equipment (SIM - ME) interface

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1.3 Document conventions
Throughout the document, the GSM engines are referred to as ME (Mobile Equipment), MS (Mobile Station), TA
(Terminal Adapter), DCE (Data Communication Equipment) or facsimile DCE (FAX modem, FAX board). When
the Siemens product names are required to distinguish the two models, MC35i is short for the engine type and
MC35iT for the terminal.
To control your GSM engine you can simply send AT Commands via its serial interface. The controlling device
at the other end of the serial line is referred to as TE (Terminal Equipment), DTE (Data Terminal Equipment) or
plainly 'the application' (probably running on an embedded system).
All abbreviations and acronyms used throughout this document are based on the GSM specifications. For defi-
nitions please refer to TR 100 350 V7.0.0 (1999-08), (GSM 01.04, version 7.0.0 release 1998).
1.3.1 Quick reference table
Each AT command description includes a table similar to the example shown below. The table is intended as a
quick reference to indicate the following functions:
Example:
PIN: Is the AT command PIN protected?
%Yes
!No
§Usage is dependent on conditions specified for the command, or not all command types are PIN
protected (for example write command PIN protected, read command not).
Note: The table provided in Section 19.3, Available AT Commands and Dependency on SIM
PIN uses the same symbols.
ASC0: Is the AT command supported on the physical serial interface ASC0?
%Yes
!No
Note: In the case of MC35i only "Yes" applies.
MUXn: Is the AT command usable on the Multiplexer channels MUX1, MUX2, MUX3?
%Yes
!No
§AT command is usable, but under the restrictions specified in the section related to the command.
Note: The columns MUX1, MUX2 and MUX3 are relevant only when the GSM engine operates in Mul-
tiplexer mode, that is, when the physical serial interface is partitioned into 3 virtual channels by
using the Multiplexer protocol. Usage is the same on ASC0 and MUX1.
PIN ASC0 MUX1 MUX2 MUX3
! % § § §

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1.3.2 Superscript notation for parameters and values
Table 1.2: Symbols used to mark the type of parameters
Table 1.3: Symbols used to indicate the correlations with other commands
Table 1.4: Symbols used to mark different types of default values of parameters
Parameter type Meaning
<param>(num) Parameter value must be numeric type
<param>(str) Parameter value must be string type
Parameter option Meaning
<param>(&W) Parameter value will be stored with AT&W
<param>(&V) Parameter value will be displayed with AT&V
<param>(ˆSNFW) Parameter value will be stored with AT^SNFW
<param>(+CSCS) Parameter value has to be (is) coded according to current setting of <chset> (see
AT+CSCS for details)
Value option Meaning
[x] Default value: if the parameter is omitted, the value 'x' will be assumed
x(&F) Factory default value, will be restored to 'x' with AT&F
x(P) Powerup default value of a parameter which is not stored at power down
x(D) Delivery default value of a parameter which cannot be restored automatically

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1.4 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.
Types of AT commands and responses:
1.4.1 Using parameters
• Optional parameters are enclosed in square brackets. If optional parameters are omitted, the current settings
are used until you change them.
• Optional parameters or subparameters can be omitted unless they are followed by other parameters. If you
want to omit a parameter in the middle of a string it must be replaced by a comma. See also example 1.
• A parameter value enclosed in square brackets represents the value that will be used if an optional parameter
is omitted. See also example 2.
• When the parameter is a character string, e.g. <text> or <number>, the string must be enclosed in quotation
marks, e.g. "Charlie Brown" or "+49030xxxx". Symbols within quotation marks will be recognized as strings.
• All spaces will be ignored when using strings without quotaton marks.
• It is possible to omit the leading zeros of strings which represent numbers.
• If an optional parameter of a V.25ter command is omitted, its value is assumed to be 0.
AT command type Syntax Function
Test command AT+CXXX=? The mobile equipment returns the
list of parameters and value ranges
set with the corresponding Write
command or by internal processes.
Read command AT+CXXX? This command returns the currently
set value of the parameter or
parameters.
Write command AT+CXXX=<...> This command sets user-definable
parameter values.
Exec(ution) command AT+CXXX The execution command reads
non-variable parameters deter-
mined by internal processes in the
GSM engine.

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Example 1: Omitting parameters in the middle of a string
Example 2: Using default parameter values for optional parameters
1.4.2 Combining AT commands on the same command line
You may enter several AT commands on the same line. This eliminates the need to type the "AT" or "at" prefix
before each command. Instead, it is only needed once at the beginning of the command line. Use a semicolon
as command delimiter.
The command line buffer accepts a maximum of 391 characters. If this number is exceeded none of the com-
mands will be executed and TA returns ERROR.
The table below lists the AT commands you cannot enter together with other commands on the same line. Oth-
erwise, the responses may not be in the expected order.
Note: When concatenating AT commands please keep in mind that the sequence of processing may be different
from the sequential order of command input. Therefore, if the consecutive order of the issued commands is your
concern, avoid concatenating commands on the same line.
AT+CCUG? Query current setting
+CCUG: 1,10,1
OK
AT+CCUG=,9 Set only the middle parameter
OK
AT+CCUG? Query new setting
+CCUG: 1,9,1
OK
AT+CFUN=5,0 Activate CYCLIC SLEEP mode, don't reset ME
OK
AT+CFUN? Query ME mode
+CFUN: 5
OK
AT+CFUN= Set ME back to normal (default parameters: 1,0)
OK
+CFUN: 1
OK
AT command type Comment
V.25ter commands with FAX commands (Prefix AT+F)
GSM 7.07 commands with Siemens commands, Prefix AT^S)
GSM 7.05 commands (SMS) To be used standalone
Commands starting with AT& To be used standalone
AT+IPR To be used standalone

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1.5 Supported character sets
The ME supports two character sets: GSM 03.38 (7 bit, also referred to as GSM alphabet or SMS alphabet) and
UCS2 (16 bit, refer to ISO/IEC 10646). See AT+CSCS for information about selecting the character set. Character
tables can be found below.
Explanation of terms
• International Reference Alphabet (IRA)
IRA means that one byte is displayed as two characters in hexadecimal format. For example, the byte 0x36
(decimal 54) is displayed as "36" (two characters). IRA is used here for input 8-bit or 16-bit data via terminal
devices using text mode. This means only characters 'A'..F','a'..'f' and '0'..'9' are valid.
• Escape sequences
The escape sequence used within a text coded in the GSM default alphabet (0x1B) must be correctly inter-
preted by the TE, both for character input and output. To the module, an escape sequence appears like any
other byte received or sent.
• Terminal Adapter (TA)
TA is used equivalent to Mobile Equipment (ME) which stands for the GSM module described here. It uses
GSM default alphabet as its character set.
• Terminal Equipment (TE)
TE is the device connected to the TA via serial interface. In most cases TE is an ANSI/ASCII terminal that
does not fully support the GSM default alphabet, for example MS Hyperterminal.
• TE Character Set
The character set currently used by Terminal Equipment is selected with AT+CSCS.
• Data Coding Scheme (dcs)
DCS is part of a short message and is saved on the SIM. When writing a short message to the SIM in text
mode, the dcs stored with AT+CSMP is used and determines the coded character set.
The behavior when encountering characters, that are not valid characters of the supported alphabets, is unde-
fined.
Due to the constraints described below it is recommended to prefer the USC2 alphabet in any external applica-
tion.
If the GSM alphabet is selected all characters sent over the serial line (between TE and TA) are in the range from
0 to 127 (7 Bit range). CAUTION: ASCII alphabet (TE) is not GSM alphabet (TA/ME) !
Several problems resulting from the use of GSM alphabet with ASCII terminal equipment:
• "@" character with GSM alphabet value 0 is not printable by an ASCII terminal program (e.g. Microsoft©
Hyperterminal®).
• "@" character with GSM alphabet value 0 will terminate any C string! This is because the 0 is defined as C
string end tag. Therefore, the GSM Null character may cause problems on application level when using a 'C'-
function as "strlen()". This can be avoided if it is represented by an escape sequence as shown in the table
below.
By the way, this may be the reason why even network providers often replace "@"with "@=*" in their SIM
application.
• Other characters of the GSM alphabet are misinterpreted by an ASCII terminal program. For example, GSM
"ö" (as in "Börse") is assumed to be "|" in ASCII, thus resulting in "B|rse". This is because both alphabets mean
different characters with values hex. 7C or 00 and so on.
• In addition, decimal 17 and 19 which are used as XON/XOFF control characters when software flow control
is activated, are interpreted as normal characters in the GSM alphabet.
When you write characters differently coded in ASCII and GSM (e.g. Ä, Ö, Ü), you need to enter escape
sequences. Such a character is translated into the corresponding GSM character value and, when output later,
the GSM character value can be presented. Any ASCII terminal then will show wrong responses.

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Examples for character definitions depending on alphabet
CAUTION: Often, the editors of terminal programs do not recognize escape sequences. In this case, an escape
sequence will be handled as normal characters. The most common workaround to this problem is to write a script
which includes a decimal code instead of an escape sequence. This way you can write, for example, short mes-
sages which may contain differently coded characters.
GSM 03.38
character
GSM character
hex. value
Corresponding
ASCII character
ASCII
Esc sequence
Hex Esc
sequence
Ö5C \\5C 5C 35 43
"22 "\22 5C 32 32
ò08 BSP \08 5C 30 38
@00 NULL \00 5C 30 30