Siemens TC63 User Manual

TC63

Siemens Cellular Engine

Version: 00.490 DocId: TC63_ATC_V00.490

AT Command Set

TC63 AT Command Set

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Product is deemed accepted by Recipient and is provided without interface to Recipient´s products. The Product constitutes pre-release version and code and may be changed substantially before commercial release. The Product is provided on an “as is” basis only and may contain deficiencies or inadequacies. The Product is 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 implied warranties of merchantability, fitness for a particular purpose and noninfringement 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. Failure 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 AG customers using or selling this product for use in any applications do so at their own risk and agree to fully indemnify Siemens for any damages resulting from illegal use or resale. To the maximum extent permitted by applicable law, in no event shall Siemens or its suppliers 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 Product, even if Siemens has been advised of the possibility of such damages. Subject to change without notice at any time.

TC63 AT Command Set

00.490

May 24, 2005

TC63_ATC_V00.490

Confidential / Draft - Do not copy

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 reserved.

Trademark notice

Bluetooth™ is a registered trademark of Bluetooth SIG Inc.

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TC63 AT Command Set

Contents

1. Introduction............................................................................................................................................ 14

1.1 Scope of the document ................................................................................................................. 14

1.2 Related documents ....................................................................................................................... 15

1.3 Document conventions.................................................................................................................. 16

1.3.1 Quick reference table ....................................................................................................... 16

1.3.2 Superscript notation for parameters and values............................................................... 17

1.4 AT Command Syntax .................................................................................................................... 18

1.4.1 Using Parameters............................................................................................................. 18

1.4.2 Combining AT commands on the same command line.................................................... 19

1.5 Supported character sets .............................................................................................................. 20

1.5.1 GSM alphabet tables and UCS2 character values........................................................... 22

1.5.2 UCS2 and GSM data coding and conversion for SMS text mode.................................... 24

1.5.2.1 Implementing output of SIM data to Terminal (direction TA to TE) ................................... 24

1.5.2.2 Implementing input of Terminal data to SIM (direction TE to TA) ..................................... 25

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 TC63.............................................. 27

1.8 Common PCN Handset Specification (CPHS) .............................................................................. 28

1.9 Errors and Messages .................................................................................................................... 29

2. Configuration Commands..................................................................................................................... 30

2.1 AT&F Set all current parameters to manufacturer defaults ......................................................... 30

2.2 AT&V Display current configuration ............................................................................................31

2.2.1 AT&V responses .............................................................................................................. 32

2.3 AT&W Stores current configuration to user defined profile ......................................................... 34

2.4 ATQ Set result code presentation mode ..................................................................................... 35

2.5 ATV Set result code format mode ...............................................................................................36

2.5.1 Verbose and numeric result codes................................................................................... 36

2.6 ATX Set CONNECT result code format and call monitoring ....................................................... 37

2.7 AT\V Set CONNECT result code format ..................................................................................... 38

2.8 ATZ Set all current parameters to user defined profile................................................................ 39

2.9 AT+CFUN Set phone functionality .............................................................................................. 40

2.9.1 Wake up the ME from SLEEP mode................................................................................ 42

2.10 AT^SMSO Switch off mobile station............................................................................................44

2.11 AT+GCAP Request complete TA capabilities list........................................................................ 45

2.12 AT+CMEE Mobile Equipment Error Message Format ................................................................ 46

2.12.1 CME/CMS Error Code Overview...................................................................................... 47

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2.13 AT+CSCS Select TE character set ............................................................................................. 51

2.14 AT^SCFG Extended Configuration Settings ............................................................................... 52

2.15 AT^SM20 Set M20 compatibility mode ....................................................................................... 65

3. Status Control Commands ................................................................................................................... 66

3.1 AT+CMER Mobile Equipment Event Reporting .......................................................................... 66

3.2 AT+CIND Indicator control .......................................................................................................... 68

3.3 AT^SIND Extended Indicator Control.......................................................................................... 71

3.4 AT+CEER Extended Error Report............................................................................................... 78

3.4.1 Cause Location ID for the extended error report.............................................................. 79

3.4.2 GSM release cause for L3 Radio Resource (RR) ............................................................ 80

3.4.3 GSM release cause for Mobility Management (MM) ........................................................ 80

3.4.4 GSM release cause for L3 Call Control (CC) ................................................................... 81

3.4.5 GSM Release cause for Supplementary Service Call...................................................... 83

3.4.6 GSM cause for L3 Protocol module or other local cause ................................................ 84

3.4.7 SIEMENS release cause for GPRS API........................................................................... 84

3.4.8 SIEMENS release cause for PPP/IP-Stack...................................................................... 84

3.5 ATS18 Extended call release report............................................................................................85

3.6 AT+CPAS Mobile equipment activity status................................................................................ 87

3.7 AT+WS46 Select wireless network ............................................................................................. 88

4. Serial Interface Control Commands..................................................................................................... 89

4.1 AT\Q Flow control........................................................................................................................ 89

4.2 AT&C Set circuit Data Carrier Detect (DCD) function mode ....................................................... 90

4.3 AT&D Set circuit Data Terminal Ready (DTR) function mode..................................................... 91

4.4 AT&S Set circuit Data Set Ready (DSR) function mode ............................................................. 92

4.5 ATE Enable command echo........................................................................................................ 93

4.6 AT+ICF Serial Interface Character Framing................................................................................ 94

4.7 AT+IFC Set Flow Control separately for data directions ............................................................. 96

4.8 AT+ILRR Set TE-TA local rate reporting..................................................................................... 98

4.9 AT+IPR Set fixed local rate ....................................................................................................... 100

4.9.1 Autobauding ................................................................................................................... 101

4.10 AT+CMUX Enter multiplex mode .............................................................................................. 103

4.10.1 Restrictions on Multiplex mode ...................................................................................... 104

4.10.2 Second serial interface ASC1 ........................................................................................ 106

4.11 AT^STPB Transmit Parity Bit (for 7E1 and 7O1 only) ............................................................... 107

5. Security Commands ............................................................................................................................ 108

5.1 AT+CPIN PIN Authentication ....................................................................................................108

5.1.1 What to do if PIN or password authentication fails? ....................................................... 110

5.2 AT+CPIN2 PIN2 Authentication ................................................................................................ 112

5.3 AT^SPIC Display PIN counter...................................................................................................114

5.4 AT+CLCK Facility lock .............................................................................................................. 118

5.5 AT^SLCK Facility lock ............................................................................................................... 123

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5.6 AT+CPWD Change Password .................................................................................................. 124

5.7 AT^SPWD Change Password................................................................................................... 128

5.8 AT^SCSL Customer SIM Lock .................................................................................................. 130

6. Identification Commands.................................................................................................................... 134

6.1 ATI Display product identification information ........................................................................... 134

6.2 AT+CGMI Request manufacturer identification......................................................................... 135

6.3 AT+GMI Request manufacturer identification ........................................................................... 135

6.4 AT+CGMM Request model identification .................................................................................. 136

6.5 AT+GMM Request model identification..................................................................................... 136

6.6 AT+CGMR Request revision identification of software status................................................... 137

6.7 AT+GMR Request revision identification of software status ..................................................... 137

6.8 AT+CGSN Request International Mobile Equipment Identity (IMEI) ......................................... 138

6.9 AT+GSN Request International Mobile Equipment Identity (IMEI) ........................................... 138

6.10 AT+CIMI Request International Mobile Subscriber Identity (IMSI)............................................ 139

7. Call related Commands....................................................................................................................... 140

7.1 Call Status Information ................................................................................................................ 140

7.2 ATA Answer a call ..................................................................................................................... 141

7.3 ATD Mobile originated call to specified number........................................................................ 142

7.4 ATD><mem><n> Mobile originated call using specific memory and index number ................. 144

7.5 ATD><n> Mobile originated call from active memory using index number ............................... 146

7.6 ATD><str> Mobile originated call from active memory using corresponding field .................... 147

7.7 ATDI Mobile originated call to ISDN number............................................................................. 148

7.8 ATDL Redial last number used ................................................................................................. 149

7.9 ATH Disconnect existing connection......................................................................................... 150

7.10 AT+CHUP Hang up call ............................................................................................................ 151

7.11 AT^SHUP Hang up call(s) indicating a specific GSM04.08 release cause ............................... 152

7.12 ATS0 Set number of rings before automatically answering a call ............................................. 154

7.13 ATS6 Set pause before blind dialing ......................................................................................... 155

7.14 ATS7 Set number of seconds to wait for connection completion .............................................. 156

7.15 ATS8 Set number of seconds to wait for comma dialing modifier............................................. 157

7.16 ATS10 Set disconnect delay after indicating the absence of data carrier ................................. 158

7.17 ATO Switch from command mode to data mode / PPP online mode........................................ 159

7.18 +++ Switch from data mode to command mode ....................................................................... 160

7.19 AT+CBST Select bearer service type ....................................................................................... 161

7.20 AT+CRLP Select radio link protocol parameters for originated non-transparent data calls...... 163

7.21 AT+CLCC List current calls of ME ............................................................................................ 164

7.22 AT^SLCC Siemens defined command to list current calls of ME.............................................. 166

7.23 AT+CR Service reporting control ..............................................................................................172

7.24 AT+CRC Set Cellular Result Codes for incoming call indication .............................................. 173

7.25 AT+CSNS Single Numbering Scheme...................................................................................... 174

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7.26 AT^SCNI List Call Number Information..................................................................................... 175

7.27 AT^SLCD Display Last Call Duration ........................................................................................ 176

7.28 AT^STCD Display Total Call Duration....................................................................................... 177

7.29 ATP Select pulse dialing ........................................................................................................... 178

7.30 ATT Select tone dialing ............................................................................................................. 178

8. Network Service Commands .............................................................................................................. 179

8.1 AT+COPN Read operator names ............................................................................................. 179

8.2 AT+COPS Operator Selection .................................................................................................. 180

8.3 AT^SOPS Extended Operator Selection................................................................................... 182

8.4 AT+CREG Network registration ................................................................................................ 184

8.5 AT+CSQ Signal quality ............................................................................................................. 187

8.6 AT^SMONC Cell Monitoring......................................................................................................188

8.7 AT^SMOND Cell Monitoring......................................................................................................190

8.8 AT^MONI Monitor idle mode and dedicated mode ................................................................... 193

8.8.1 AT^MONI responses ...................................................................................................... 194

8.8.2 Service states................................................................................................................. 195

8.9 AT^MONP Monitor neighbour cells ........................................................................................... 196

8.9.1 AT^MONP responses..................................................................................................... 197

8.10 AT^SMONG GPRS Monitor ...................................................................................................... 198

8.10.1 AT^SMONG Cell Info Table ........................................................................................... 199

8.11 AT^SALS Alternate Line Service...............................................................................................200

8.12 AT^SHOM Display Homezone .................................................................................................. 202

8.13 AT^SPLM Read the PLMN list .................................................................................................. 203

8.14 AT+CPOL Preferred Operator List ............................................................................................ 204

8.15 AT^SPLR Read entry from the preferred operators list............................................................. 205

8.16 AT^SPLW Write an entry to the preferred operators list ........................................................... 206

9. Supplementary Service Commands .................................................................................................. 207

9.1 AT+CACM Accumulated call meter (ACM) reset or query ........................................................ 207

9.2 AT^SACM Advice of charge and query of ACM and ACMmax ................................................. 208

9.3 AT+CAMM Accumulated call meter maximum (ACMmax) set or query.................................... 210

9.4 AT+CAOC Advice of Charge information.................................................................................. 211

9.5 AT+CCUG Closed User Group ................................................................................................. 212

9.6 AT+CCFC Call forwarding number and conditions control ....................................................... 214

9.7 AT+CCWA Call Waiting ............................................................................................................ 218

9.8 AT+CHLD Call Hold and Multiparty........................................................................................... 222

9.9 AT+CLIP Calling line identification presentation ....................................................................... 224

9.10 AT+CLIR Calling line identification restriction ........................................................................... 226

9.11 AT+COLP Connected Line Identification Presentation ............................................................. 227

9.12 AT+CPUC Price per unit and currency table............................................................................. 229

9.13 AT+CSSN Supplementary service notifications ........................................................................ 231

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9.14 AT+CUSD Supplementary service notifications........................................................................ 233

10. Internet Service Commands ............................................................................................................... 235

10.1 AT^SICS Internet Connection Setup Profile.............................................................................. 237

10.1.1 Example: Default values of a CSD connection profile.................................................... 240

10.1.2 Example: GPRS connection profile ................................................................................ 240

10.2 AT^SISS Internet Service Setup Profile .................................................................................... 242

10.2.1 Example: Configuring Socket Listener ........................................................................... 250

10.2.2 Example: Configuring Socket Client for Calling a Socket Listener on Another Host...... 250

10.2.3 Example: Configuring and Using FTP Download ........................................................... 251

10.2.4 Example: Configuring and Using FTP Upload................................................................ 251

10.2.5 Example: Sending Email over GPRS ............................................................................. 252

10.3 AT^SISO Internet Service Open ............................................................................................... 254

10.3.1 Example: Accepting / Rejecting Socket Connection Request from Remote Client ........ 257

10.4 AT^SISC Internet Service Close ...............................................................................................259

10.4.1 Effect of parameter <closeMode> .................................................................................. 260

10.5 AT^SISR Internet Service Read Data ....................................................................................... 261

10.6 AT^SISW Internet Service Write Data....................................................................................... 263

10.7 Information Elements Related to Internet Service URCs ............................................................ 265

10.7.1 URC Information Elements Related to the Service Application...................................... 265

10.7.2 URC Information Elements Related to FTP Service ...................................................... 266

10.7.3 URC Information Elements Related to HTTP Service.................................................... 266

10.7.4 URC Information Elements Related to POP3 Service.................................................... 267

10.7.5 URC Information Elements Related to SMTP Service ................................................... 267

11. GPRS Commands ................................................................................................................................ 268

11.1 AT+CGACT PDP context activate or deactivate ....................................................................... 268

11.2 AT+CGANS Manual response to a network request for PDP context activation ...................... 270

11.3 AT+CGATT GPRS attach or detach ......................................................................................... 272

11.4 AT+CGAUTO Automatic response to a network request for PDP context activation ............... 273

11.5 AT+CGDATA Enter data state .................................................................................................. 275

11.5.1 Automatic deactivation of PDP context during dial-up PPP ........................................... 276

11.6 AT+CGDCONT Define PDP Context ........................................................................................ 277

11.7 AT+CGEQMIN 3G Quality of Service Profile (Minimum acceptable) ........................................ 279

11.8 AT+CGEQREQ 3G Quality of Service Profile (Requested) ...................................................... 283

11.9 AT+CGPADDR Show PDP address ......................................................................................... 287

11.10 AT+CGQMIN Quality of Service Profile (Minimum acceptable) ................................................ 288

11.11 AT+CGQREQ Quality of Service Profile (Requested) .............................................................. 292

11.12 AT+CGREG GPRS network registration status ........................................................................ 296

11.13 AT+CGSMS Select service for MO SMS messages ................................................................. 298

11.14 AT^SGACT Query all PDP context activations ......................................................................... 299

11.15 AT^SGAUTH Set type of authentication for PPP connection.................................................... 301

11.16 AT^SGCONF Configuration of GPRS related Parameters ...................................................... 302

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11.17 ATA Manual response to a network request for PDP context activation................................... 303

11.18 ATD*99# Request GPRS service.............................................................................................. 304

11.19 ATD*98# Request GPRS IP service ......................................................................................... 305

11.20 ATH Manual rejection of a network request for PDP context activation.................................... 306

11.21 ATS0 Automatic response to a network request for PDP context activation............................. 307

11.22 Using GPRS AT commands (Examples)..................................................................................... 308

11.23 Using the GPRS dial command ATD .......................................................................................... 310

12. FAX Commands ................................................................................................................................... 311

12.1 FAX parameters .......................................................................................................................... 311

12.2 AT+FCLASS Fax: Select, read or test service class................................................................. 312

12.3 AT+FRH Receive Data Using HDLC Framing .......................................................................... 313

12.4 AT+FRM Receive Data ............................................................................................................. 314

12.5 AT+FRS Receive Silence.......................................................................................................... 315

12.6 AT+FTH Transmit Data Using HDLC Framing.......................................................................... 316

12.7 AT+FTM Transmit Data............................................................................................................. 317

12.8 AT+FTS Stop Transmission and Wait....................................................................................... 318

13. Short Message Service (SMS) Commands........................................................................................ 319

13.1 SMS parameters ......................................................................................................................... 319

13.2 AT+CMGC Send an SMS command......................................................................................... 324

13.3 AT+CMGD Delete SMS message............................................................................................. 325

13.4 AT+CMGF Select SMS message format .................................................................................. 326

13.5 AT+CMGL List SMS messages from preferred store................................................................ 327

13.6 AT+CMGR Read SMS messages............................................................................................. 329

13.7 AT+CMGS Send SMS message ............................................................................................... 331

13.8 AT+CMGW Write SMS messages to memory .......................................................................... 333

13.9 AT+CMSS Send SMS messages from storage ........................................................................ 335

13.10 AT+CNMA New SMS message acknowledge to ME/TE, only phase 2+ .................................. 336

13.11 AT+CNMI New SMS message indications................................................................................ 337

13.12 AT+CPMS Preferred SMS message storage............................................................................ 340

13.13 AT+CSCA SMS service centre address.................................................................................... 342

13.14 AT+CSCB Select Cell Broadcast Message Indication .............................................................. 343

13.15 AT+CSDH Show SMS text mode parameters........................................................................... 344

13.16 AT+CSMP Set SMS text mode parameters .............................................................................. 345

13.17 AT+CSMS Select Message Service.......................................................................................... 347

13.18 AT^SCML List Concatenated SMS messages from preferred store ......................................... 349

13.19 AT^SCMR Read concatenated SMS messages ....................................................................... 351

13.20 AT^SCMS Send concatenated SMS messages ....................................................................... 353

13.21 AT^SCMW Write concatenated SMS messages to memory .................................................... 354

13.22 AT^SLMS List SMS Memory Storage ....................................................................................... 355

13.23 AT^SMGL List SMS messages from preferred store without setting status to REC READ ...... 356

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13.24 AT^SMGO Set or query SMS overflow presentation mode or query SMS overflow ................. 357

13.25 AT^SMGR Read SMS message without setting status to REC READ ..................................... 359

13.26 AT^SSCONF SMS Command Configuration ........................................................................... 360

13.27 AT^SSDA Set SMS Display Availability .................................................................................... 361

13.28 AT^SSMSS Set Short Message Storage Sequence ................................................................. 362

14. SIM related Commands ....................................................................................................................... 363

14.1 AT+CRSM Restricted SIM Access ............................................................................................ 363

14.2 AT^SXSM Extended SIM Access.............................................................................................. 366

14.3 AT^SCKS Query SIM and Chip Card Holder Status ................................................................. 368

14.4 AT^SSET Indicate SIM data ready............................................................................................ 370

14.5 AT^SCID Display SIM card identification number ..................................................................... 371

14.6 AT+CXXCID Display card ID..................................................................................................... 372

15. Remote SIM Access (RSA) Commands .............................................................................................373

15.1 AT^SRSA Remote SIM Access Activation ................................................................................ 376

15.2 AT^SRSM Remote SIM Access Message ................................................................................ 380

15.2.1 SAP Request Message Parameter ................................................................................ 382

15.2.2 SAP Response Message Parameter.............................................................................. 383

15.3 Related AT Commands............................................................................................................... 384

15.3.1 Establishing an RSA connection in a PC environment................................................... 384

15.3.2 Car cradle scenario (XSAP) ........................................................................................... 384

15.3.3 Bluetooth scenario (SAP) ............................................................................................... 385

16. SIM Application Toolkit (SAT) Commands........................................................................................ 386

16.1 AT^SSTA SAT Interface Activation ........................................................................................... 386

16.2 ^SSTN SAT Notification ............................................................................................................ 388

16.3 AT^SSTGI SAT Get Information ............................................................................................... 389

16.4 AT^SSTR SAT Response .........................................................................................................390

17. Phonebook Commands....................................................................................................................... 391

17.1 Sort Order for Phonebooks ......................................................................................................... 391

17.2 AT+CNUM Read own numbers................................................................................................. 392

17.3 AT+CPBR Read from Phonebook............................................................................................. 393

17.4 AT+CPBS Select phonebook memory storage ......................................................................... 396

17.5 AT+CPBW Write into Phonebook ............................................................................................. 398

17.6 AT^SDLD Delete the 'last number redial' memory .................................................................... 401

17.7 AT^SPBC Find first matching entry in sorted phonebook ......................................................... 402

17.8 AT^SPBD Purge phonebook memory storage.......................................................................... 403

17.9 AT^SPBG Display phonebook entries in alphabetical order ..................................................... 404

17.10 AT^SPBS Step through the selected phonebook alphabetically............................................... 407

18. Audio Commands ................................................................................................................................ 411

18.1 Audio programming model .......................................................................................................... 411

18.2 ATL Set monitor speaker loudness ........................................................................................... 412

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18.3 ATM Set monitor speaker mode................................................................................................ 412

18.4 AT+CLVL Loudspeaker volume level........................................................................................ 413

18.5 AT+CMUT Mute control ............................................................................................................ 414

18.6 AT+VTD Tone duration ............................................................................................................. 415

18.7 AT+VTS DTMF and tone generation......................................................................................... 416

18.8 AT^SAIC Audio Interface Configuration .................................................................................... 417

18.9 AT^SNFA Set or query of microphone attenuation .................................................................. 419

18.10 AT^SNFD Set audio parameters to manufacturer default values ............................................. 421

18.11 AT^SNFI Set microphone path parameters .............................................................................. 422

18.12 AT^SNFM Set microphone audio path and power supply......................................................... 423

18.13 AT^SNFO Set audio output (= loudspeaker path) parameter ................................................... 425

18.14 AT^SNFPT Set progress tones .................................................................................................427

18.15 AT^SNFS Select audio hardware set........................................................................................ 428

18.16 AT^SNFTTY Signal TTY/CTM audio mode capability............................................................... 431

18.17 AT^SNFV Set loudspeaker volume........................................................................................... 432

18.18 AT^SNFW Write audio setting in non-volatile store .................................................................. 433

18.19 AT^SRTC Ring tone configuration ............................................................................................ 434

19. Hardware related Commands ............................................................................................................. 436

19.1 AT+CCLK Real Time Clock....................................................................................................... 436

19.2 AT+CALA Set alarm time ......................................................................................................... 437

19.3 AT^SBC Battery Charge Control............................................................................................... 440

19.3.1 Responses returned by read command ......................................................................... 442

19.4 AT^SBV Battery/Supply Voltage ............................................................................................... 443

19.5 AT^SCTM Set critical operating temperature presentation mode or query temperature........... 444

19.6 AT^SSYNC Configure SYNC Pin.............................................................................................. 447

19.6.1 ME status indicated by status LED patterns................................................................... 448

19.7 AT^SSPI Serial Protocol Interface ............................................................................................450

19.7.1 Specifying Delay Time for I²C......................................................................................... 451

19.7.2 Transmitting Data over AT Interface .............................................................................. 453

19.7.2.1Structure of Messages on the I²C Bus............................................................................ 454

19.7.3 Error Handling on the I²C Bus ........................................................................................ 455

19.7.4 Example: Using I²C Bus ................................................................................................. 456

20. Miscellaneous Commands.................................................................................................................. 457

20.1 A/ Repeat previous command line ............................................................................................ 457

20.2 ATS3 Set command line termination character......................................................................... 458

20.3 ATS4 Set response formatting character .................................................................................. 459

20.4 ATS5 Write command line editing character ............................................................................. 460

20.5 AT^SFDL Enter Firmware Download Mode .............................................................................. 461

21. Appendix .............................................................................................................................................. 462

21.1 Restricted access to SIM data after SIM PIN authentication....................................................... 462

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21.2 Star-Hash (*#) Network Commands............................................................................................ 463

21.3 Available AT Commands and Dependency on SIM PIN ............................................................. 466

21.4 Availability of AT Commands Depending on Operating Mode of ME.......................................... 473

21.5 AT Command Settings storable with AT&W................................................................................ 480

21.6 Factory Default Settings Restorable with AT&F.......................................................................... 483

21.7 Summary of Unsolicited Result Codes (URC)............................................................................. 486

21.8 AT Command Usability for USB .................................................................................................. 489

21.9 Alphabetical List of AT Commands ............................................................................................. 496

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List of Tables

Table 1.1: Symbols used to mark the type of parameters ...........................................................................17

Table 1.2: Symbols used to indicate the correlations with other commands ............................................... 17

Table 1.3: Symbols used to mark different types of default values of parameters ..................................... 17

Table 1.4: Types of AT commands and responses .................................................................................... 18

Table 1.5: Examples for character definitions depending on alphabet ........................................................ 21

Table 2.1: Current configuration on ASC0 / MUX channel 1 (example) ...................................................... 32

Table 2.2: Current configuration on ASC1 and MUX channels 2 and 3 (example) .................................... 33

Table 2.3: Wake-up events in NON-CYCLIC and CYCLIC SLEEP modes ................................................. 42

Table 2.4: General "CME ERROR" Codes (GSM 07.07) .......................................................................... 47

Table 2.5: General "CME ERROR" Codes (SIEMENS) ............................................................................ 48

Table 2.6: GPRS related "CME ERROR" Codes (GSM 07.07) ................................................................. 48

Table 2.7: GPRS related "CME ERROR" Codes (SIEMENS) ................................................................... 48

Table 2.8: SMS related "CMS ERROR" Codes (GSM 07.05) ................................................................... 49

Table 4.1: Availability of AT Commands on Virtual Channels .................................................................. 104

Table 4.2: Summary of AT commands with Different Behavior in Multiplex Mode ................................... 105

Table 10.1: Applicability of AT^SICS <conParmTag> values ................................................................... 237

Table 19.1: Modes of the LED and indicated ME functions......................................................................... 448

Table 19.2: Values for calculating the delay................................................................................................ 451

Table 19.3: Special characters for ASCII coding ......................................................................................... 453

Table 19.4: Structure of Transfer and Response Messages on the I²C bus................................................ 454

Table 21.1: Star-Hash (*#) Command Overview ........................................................................................ 463

Table 21.2: Abbreviations of Codes and Parameters used in Table 21.1 .................................................. 464

Table 21.3: Star-Hash Command Response Parameters .......................................................................... 465

Table 21.4: Star-Hash Commands for Supplementary Services ................................................................ 465

Table 21.5: Available AT Commands and Dependency on SIM PIN........................................................... 466

Table 21.6: Availability of AT Commands Depending on Operating Mode of ME ....................................... 473

Table 21.7: Settings Stored to User Profile on ASC0 / MUX Channel 1...................................................... 480

Table 21.8: Settings Stored to User Profile on ASC1 / MUX Channels 2 and 3.......................................... 481

Table 21.9: Factory Default Settings Restorable with AT&F ....................................................................... 483

Table 21.10: Summary of Unsolicited Result Codes (URC) .......................................................................... 486

Table 21.11: AT Command Usablility for USB............................................................................................... 489

Table 21.12: Alphabetical List of AT Commands........................................................................................... 496

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TC63 AT Command Set

List of Figures

Figure 1.1: Main character table of GSM 03.38 alphabet ............................................................................. 22

Figure 1.2: Extension character table of GSM 03.38 alphabet ..................................................................... 23

Figure 15.1: Basic Remote SIM Access Usage Scenario............................................................................. 373

Figure 15.2: SIM usage states of SAP server............................................................................................... 374

Figure 15.3: SIM usage states of SAP client ................................................................................................ 375

Figure 18.1: Audio programming model........................................................................................................ 411

Figure 19.1: Formula for calculating the delay.............................................................................................. 451

Figure 19.2: Delay time on I²C after Write .................................................................................................... 452

Figure 19.3: Delay time on I²C after Read .................................................................................................... 452

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TC63 AT Command Set

1. Introduction

1.1 Scope of the document

This document presents the AT Command Set for the Siemens Cellular Engine TC63 Version 00.490.

Before using the Cellular Engine or upgrading to a new firmware version please read the latest product information provided in the Release Notes [1].

More information is available at the Siemens Website: http://www.siemens.com/wm

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TC63 AT Command Set

1.2 Related documents

[1] TC63 Release Notes, Version 00.490 [2] TC63 Hardware Interface Description, Version 00.490 [3] GPRS Startup User's Guide [4] Remote-SAT User's Guide [5] Multiplexer User's Guide [6] Multiplex Driver Developer's Guide for Windows 2000 and Windows XP [7] Multiplex Driver Installation Guide for Windows 2000 and Windows XP [8] Application Note 02: Audio Interface Design

[9] Application Note 16: Updating TC63 Firmware [10] Application Note 24: Application Developer's Guide [11] Application Note 22: Using TTY / CTM equipment with TC63 [12] SIM Access Profile Interoperability Specification (Revision 0.95c), issued by the Bluetooth Special Interest

Group

[13] TC63 Remote SIM Access User's Guide [14] ISO/IEC10646: "Universal Multiple-Octet Coded Character Set (UCS)"; UCS2, 16 bit coding [15] ITU-T Recommendation V.24: List of definitions for interchange circuits between data terminal equipment

(DTE) and data circuit-terminating equipment (DCE)

[16] ITU-T Recommendation V.250: Serial asynchronous automatic dialling and control [17] 3GPP TS 100 918/EN 300 918 (GSM 02.04): General on supplementary services [18] 3GPP TS 100 907 (GSM 02.30): Man-Machine Interface (MMI) of the Mobile Station (MS) [19] 3GPP TS 23.038 (GSM 03.38): Alphabets and language specific information [20] 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)

[21] 3GPP TS 27.007 (GSM 07.07): AT command set for User Equipment (UE) [22] 3GPP TS 27.060 (GSM 07.60): Mobile Station (MS) supporting Packet Switched Services [23] 3GPP TS 51.011 (GSM 11.11): Specification of the Subscriber Identity Module - Mobile Equipment (SIM -

ME) interface

[24] 3GPP TS 11.14 (GSM 11.14): Specification of the SIM Application Toolkit for the Subscriber Identity Module

- Mobile Equipment (SIM - ME) interface

[25] 3GPP TS 22.101 (GSM 22.101): Service principles [26] Common PCN Handset Specification (CPHS) v4.2

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TC63 AT Command Set

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). 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 definitions 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: 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 21.3, Available AT Commands and Dependency on SIM

PIN uses the same symbols.

ASC0: Is the AT command supported on the first physical serial interface ASC0? % Yes ! No ASC1: Is the AT command supported on the second physical serial interface ASC1? % Yes ! No USB: Is the AT command supported on the USB interface? % Yes ! No 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 first physical serial interface is partitioned into 3 virtual channels by using the Multiplexer protocol. Usage is the same on ASC0 and MUX1.

% Yes ! No

§ In AIRPLANE mode, not all described functions are available. For example, the test or read com-

Charge: Is the AT command supported in CHARGE ONLY mode? % Yes ! No

§ AT command is usable, but under the restrictions specified in the section related to the command. Last: If commands are concatenated, this AT command must be the last one. % Yes ! No Note: See also Section 1.4, AT Command Syntax for details on concatenated AT commands.

Is the AT command supported in AIRPLANE mode?

mand is usable, the write or execute command is not. Furthermore, only some of the listed parameters can be changed in AIRPLANE mode. A typical example is AT^SCFG that controls different features.

Example:

PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4 Last

! % % % § § § % ! !

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TC63 AT Command Set

1.3 Document conventions

1.3.2 Superscript notation for parameters and values

Table 1.1: Symbols used to mark the type of parameters

Parameter type Meaning

<param>

Table 1.2: Symbols used to indicate the correlations with other commands

Parameter option Meaning

<param>

Table 1.3: Symbols used to mark different types of default values of parameters

(num)

(str)

(&W)

(&V)

(ˆSNFW)

(+CSCS)

Parameter value must be numeric type Parameter value must be string type

Parameter value will be stored with AT&W Parameter value will be displayed with AT&V Parameter value will be stored with AT^SNFW 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

(&F)

(P)

(D)

Factory default value, will be restored to 'x' with AT&F Powerup default value of a parameter which is not stored at power down Delivery default value of a parameter which cannot be restored automatically

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TC63 AT Command Set

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>". Through-

out this document, only the responses are presented,

Table 1.4: Types of AT commands and responses

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.

<CR><LF> are omitted intentionally.

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 in 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.250 command is omitted, its value is assumed to be 0.

Example 1: Omitting parameters in the middle of a string

AT+CCUG? +CCUG: 1,10,1 OK AT+CCUG=,9 OK AT+CCUG? +CCUG: 1,9,1 OK

Example 2: Using default parameter values for optional parameters

Query current setting

Set only the middle parameter

Query new setting

AT+CFUN=7,0 OK AT+CFUN? +CFUN: 7 OK AT+CFUN= OK +CFUN: 1 OK

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Activate CYCLIC SLEEP mode, don't reset ME

Query ME mode

Set ME back to normal (default parameters: 1,0)

TC63 AT Command Set

1.4 AT Command Syntax

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 table below lists the AT commands you cannot enter together with other commands on the same line. Otherwise, the responses may not be in the expected order.

AT command type Comment V.250 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

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 and the associated responses is your concern, avoid concatenating commands on the same line.

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TC63 AT Command Set

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 interpreted 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 undefined. Due to the constraints described below it is recommended to prefer the USC2 alphabet in any external application. 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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TC63 AT Command Set

1.5 Supported character sets

Table 1.5: Examples for character definitions depending on alphabet

GSM 03.38 character

Ö 5C \ \5C 5C 35 43 " 22 " \22 5C 32 32 ò 08 BSP \08 5C 30 38 @ 00 NULL \00 5C 30 30

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 messages which may contain differently coded characters.

GSM character hex. value

Corresponding ASCII character

ASCII Esc sequence

Hex Esc sequence

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TC63 AT Command Set

1.5 Supported character sets

1.5.1 GSM alphabet tables and UCS2 character values

This section provides tables for the GSM 03.38 alphabet supported by the ME. Below any GSM character find the corresponding two byte character value of the UCS2 alphabet.

Figure 1.1: Main character table of GSM 03.38 alphabet

1) This code is an escape to the following extension of the 7 bit default alphabet table.

2) This code is not a printable character and therefore not defined for the UCS2 alphabet. It shall be treated as the accompanying control character.

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TC63 AT Command Set

1.5 Supported character sets

Figure 1.2: Extension character table of GSM 03.38 alphabet

1) This code value is reserved for the extension to another extension table. On receipt of this code, a receiving entity shall display a space until another extension table is defined.

2) This code represents the EURO currency symbol. The code value is the one used for the character 'e'. Therefore a receiving entity which is incapable of displaying the EURO currency symbol will display the character 'e' instead.

3) This code is defined as a Page Break character and may be used for example in compressed CBS messages. Any mobile which does not understand the 7 bit default alphabet table extension mechanism will treat this character as Line Feed.

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TC63 AT Command Set

1.5 Supported character sets

In the event that an MS receives a code where a symbol is not represented in Figure 1.2, Extension character

table of GSM 03.38 alphabet the MS shall display the character shown in the main default 7 bit alphabet table

(see Figure 1.1, Main character table of GSM 03.38 alphabet).

1.5.2 UCS2 and GSM data coding and conversion for SMS text mode

This section provides basic information on how to handle input and output character conversion for SMS text mode and Remote-SAT if internal (TA) and external (TE) character representation differ, i.e. if the Data Coding Scheme and the TE character use different coding.

1.5.2.1 Implementing output of SIM data to Terminal (direction TA to TE)

Used character set DCS = 7 bit

GSM

GSM Case 1

GSM (1:1)

UCS2 Case 4

GSM to IRA (1:4)

Note: The ratio of SIM bytes to output bytes is given in parentheses.

Case 1 Every GSM character is sent to TE as it is (8-bit value with highest bit set to zero). Example: 47'H, 53'H, 4D'H → 47'H, 53'H, 4D'H, displayed as "GSM"

Case 2 Every data byte will is sent to TE as 2 IRA characters each representing a halfbyte. Example: B8'H (184 decimal) → 42'H, 38'H, displayed as "B8"

Case 3 Every 16-bit UCS2 value is sent to TE as 4 IRA characters. Example: C4xA7'H (50343 decimal) → 43'H, 34'H, 41'H, 37'H, displayed as "C4A7" Problem: An odd number of bytes leads to an error because there are always two bytes needed for each USC2 character

Case 4 Every GSM character is sent to TE as 4 IRA characters to show UCS2 in text mode. Example: 41'H ("A") → 30'H, 30'H, 34'H, 31'H, displayed as "0041"

DCS = 8 bit Data

Case 2 8 bit to IRA (1:2)

Case 5 8 bit to IRA (1:4)

DCS = 16 bit UCS2

Case 3 UCS2 to IRA (2:4)

Case 6 UCS2 to IRA (2:4)

Case 5 Every data byte is sent to TE as IRA representation of UCS2 (similar to case 4). Example: B2'H → 30'H, 30'H, 42'H, 32'H, displayed as "00B2"

Case 6 Every 16-bit value is sent to TE as IRA representation of it. It is assumed that number of bytes is even. Example: C3x46'H → 43'H, 33'H, 34'H, 36'H, displayed as "C346"

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TC63 AT Command Set

1.5 Supported character sets

1.5.2.2 Implementing input of Terminal data to SIM (direction TE to TA)

Used character set DCS = 7 bit

GSM

GSM Case 1

GSM (1:1)

UCS2 Case 4

UCS2 to GSM (4:1)

Note: The ratio between the number of input characters and bytes stored on the SIM is given in parentheses.

Case 1 Every character is sent from TE to TA as GSM character (or ASCII with Hyperterminal). Character value must be in range from 0 to 127 because of 7-bit GSM alphabet. To reach maximum SMS text length of 160 characters in 140 bytes space characters will be compressed on SIM. This must be set using the parameter <dcs> of AT+CSMP (add 64). Example: "ABCDEFGH" typed is sent and stored uncompressed as → 4142434445464748'H (stored compressed as 41E19058341E91'H)

Case 2 Every data byte is sent to TA as 2 IRA characters. Maximum text length is 280 IRA characters which will be converted into 140 bytes SMS binary user data Example: "C8" typed is sent as 43'H, 38'H → stored as C8'H

Case 3 Every 16-bit value is sent to TA as 4 IRA characters. Maximum text length is 280 IRA characters which will be converted into 70 UCS2 characters (16-bit each) Number of IRA characters must be a multiple of four because always 4 half bytes are needed for a 16-bit value Example: "D2C8" typed is sent as 44'H, 32'H, 43'H, 38'H → stored as D2C8'H

DCS = 8 bit Data

Case 2 IRA to 8 bit (2:1)

Case 5 UCS2 to 8 bit (4:1)

DCS = 16 bit UCS2

Case 3 IRA to 16 bit (4:2)

Case 6 UCS2 to 16 bit (4:2)

Case 4 Every GSM character is sent to TA as 4 IRA characters representing one UCS2 character. Example: To store text "ABC" using UCS2 character set you have to type "004100420043". This is sent as 30'H,30'H,34'H,31'H, 30'H,30'H,34'H,32'H, 30'H,30'H,34'H,33'H → detected as IRA representation of 3 UCS2 characters, converted to GSM character set and stored as 41'H, 42'H, 43'H. Maximum input is 640 IRA characters repesenting 160 UCS2 characters when compression is active. These are converted to 160 GSM 7-bit characters. Without compression only 140 GSM characters can be stored which are put in as 560 IRA characters. Values of UCS2 characters must be smaller than 80'H (128 decimal) to be valid GSM characters. Number of IRA characters must be a multiple of four. Problems:

• "41" → Error, there are four IRA characters (two bytes) needed

• "0000" → Error, not an UCS2 character

• "4142" → Error, value of UCS2 character > 7F'H

• "008B" → Error, value of UCS2 character > 7F'H

This affects the maximum input length of a string)

Case 5 Every UCS2 character is sent as 4 IRA characters and is converted into two 8-bit values. This means that the first two characters have to be '00'. Example: UCS2 character 009F'H typed as "009F" is sent as 30'H,30'H,39'H,46'H → converted into 8-bit value 9F'H. Maximum number of UCS2 characters is 140 which are represented by 560 IRA characters. Number of IRA characters must be a multiple of four.

Case 6 Every UCS2 character is sent as 4 IRA characters each and is converted into a 16-bit value again. Example: UCS2 character 9F3A'H typed as "9F3A" is sent as 39'H,46'H,33'H,41'H → converted into 9F3A'H. Maximum number of UCS2 characters is 70 which are represented by 280 IRA characters. Number of IRA characters must be a multiple of four. Invalid UCS2 values must be prevented.

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TC63 AT Command Set

1.6 Serial Interface Flow Control

Flow control is essential to prevent loss of data or avoid errors when, in a data or fax call, the sending device is transferring data faster than the receiving side is ready to accept. When the receiving buffer reaches its capacity, the receiving device should be capable to cause the sending device to pause until it catches up. There are basically two approaches to regulate data flow: Software flow control and hardware flow control. The High Watermark of the input/output buffer should be set to approximately 60% of the total buffer size. The Low Watermark is recommended to be about 30%. The data flow should be stopped when the capacity rises close to the High Watermark and resumed when it drops below the Low Watermark. The time required to cause stop and go results in a hysteresis between the High and Low Watermarks. During Multiplex mode (AT+CMUX) it is recommended to use hardware flow control.

1.6.1 Software Flow Control (XON/OFF Handshake)

Software flow control sends different characters to stop (XOFF, decimal 19) and resume (XON, decimal 17) data flow. The only advantage of software flow control is that three wires would be sufficient on the serial interface.

1.6.2 Hardware Flow Control (RTS/CTS Handshake)

Hardware flow control sets or resets the RTS/CTS wires. This approach is faster and more reliable, and therefore, the better choice. When the High Watermark is reached, CTS is set inactive until the transfer from the buffer has completed. When the Low Watermark is passed, CTS goes active again. To achieve smooth data flow, ensure that the RTS/CTS lines are present on your application platform. The application should include options to enable RTS/CTS handshake with the GSM engine. This needs to be done with the AT command AT\Q3 - it is not sufficient to set RTS/CTS handshake in the used Terminal program only. The default setting of the GSM engine is AT\Q0 (no flow control) which must be altered to AT\Q3 (RTS/CTS hardware handshake on). The setting is stored volatile and must be restored each time after the GSM engine was switched off.

AT\Q has no read command. To verify the current setting of AT\Q, simply check the settings of the active profile

with AT&V. Often, fax programs run an intialization procedure when started up. The intialization commonly includes enabling RTS/CTS hardware handshake, eliminating the need to set AT\Q3 once again. However, before setting up a CSD call, you are advised to check that RTS/CTS handshake is set. RTS/CTS hardware handshake must also be set if you want to take advantage of the CYCLIC SLEEP modes. For further details refer to AT+CFUN.

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TC63 AT Command Set

1.7 Unsolicited Result Code Presentation

URC stands for Unsolicited Result Code and is a report message issued by the ME without being requested by the TE, i.e. a URC is issued automatically when a certain event occurs. Hence, a URC is not issued as part of the response related to an executed AT command. Typical events leading to URCs are incoming calls ("RING"), waiting calls, received short messages, changes in temperature, network registration etc. A list of all URCs can be found in Section 21.7, Summary of Unsolicited Result Codes (URC).

To announce a pending URC transmission the ME will do the following:

• The ME activates its RING line (logic "1") for 1 second, i.e. the RING line changes to the physical "Low" level. This allows the TE to stay in power saving mode until an ME related event requests service. If several URCs occur coincidently or in quick succession each URC triggers the RING line independently, although the line will not be deactivated between each URC. As a result, the RING line may stay low for more than 1 second. If an incoming call is answered within less than 1 second (with ATA or if autoanswering is set to ATS0=1) than the RING line will be deactivated earlier. The "^SHUTDOWN" will not activate the RING line.

• If the AT command interface is busy a "BREAK" will be sent immediately but the URC will not be issued until the line is free. This may happen if the URC is pending in the following cases:

- During the processing of an AT command (i.e. the time after the TE echoes back the first character "A" of

an AT command just sent by itself until the ME responds with "OK" or "ERROR").

- During a data call. Please note that AT command settings may be necessary to enable in-band signaling, e.g. refer to AT+CMER

or AT+CNMI.

It is strongly recommended to use the multiplex mode to map logical communication channels onto the serial line of the TC63, for details refer to [5] and AT command AT+CMUX. Doing so it is possible to use one channel to still process URCs while having a data call active on another. For most of these messages, the ME needs to be configured whether or not to send a URC. Depending on the AT command, the URC presentation mode can be saved to the user defined profile (see AT&W), or needs to be activated every time you reboot the ME. Several URCs are not user definable, such as "^SYSSTART", "^SYSSTART <text>", "^SHUTDOWN" If autobauding is enabled (as factory default mode or set with AT+IPR=0), URCs generated after restart will be output with 57600 bps until the ME has detected the current bit rate. The URCs "^SYSSTART", "^SYSSTART <text>", however, are not presented at all. For details please refer to Section 4.9.1, Autobauding. To avoid problems we recommend to configure a fixed bit rate rather than using autobauding.

1.7.1 Communication between Customer Application and TC63

Leaving hardware flow control unconsidered the Customer Application (TE) is coupled with the TC63 (ME) via a receive and a transmit line. Since both lines are driven by independent devices collisions may (and will) happen, i.e. while the TE issues an AT command the TC63 starts sending an URC. This will probably lead to the TE's misinterpretation of the URC being part of the AT command's response.

To avoid this conflict the following measures must be taken:

• If an AT command is finished (with "OK" or "ERROR") the TE shall always wait at least 100 milliseconds before sending the next one. This gives the TC63 the opportunity to transmit pending URCs and get necessary service. Note that some AT commands may require more delay after "OK" or "ERROR" response, refer to the following command specifications for details.

• The TE shall communicate with the TC63 using activated echo (ATE1), i.e. the TC63 echoes characters received from the TE. Hence, when the TE receives the echo of the first character "A" of the AT command just sent by itself it has control both over the receive and the transmit paths.

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TC63 AT Command Set

1.8 Common PCN Handset Specification (CPHS)

The ME provides features to implement a device following the prerequisites of the Common PCN Handset Specification (CPHS) Phase 2.

CPHS Feature Description/Remarks AT command Alternate Line Service Using two phone numbers with one SIM card. AT^SALS Voice Message Waiting

Indication

Operator (Service provider) name from SIM

Network and Service Provider Lock

Call Forwarding Get and set diverted call status. Access specific Elementary

Customer Service Profile (CSP)

Information numbers Hierarchically structured service numbers phonebook on

Indicate the receipt of a short message coded as Voice Message Waiting Indicator as defined by the CPHS Phase 2 standard.

Read specific Elementary Files (6F14h, 6F18h) from SIM. AT+CRSM

Lock/Unlock an ME to specific HPLMN and service provider. AT+CLCK,

File (6F13h) from SIM. Setting services and their menu entries depending on cus-

tomer profiles.

SIM according to CPHS 4.2 (mandatory).

AT^SIND, AT+CMER, indicators

"vmwait1" and "vmwait2"

(AT+CPIN)

AT+CCFC, AT+CRSM

AT+CRSM

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TC63 AT Command Set

1.9 Errors and Messages

The command result codes "+CME ERROR: <err>" and "+CMS ERROR: <err>" indicate errors related to mobile equipment or network functionality.

The format of <err> can be either numeric or verbose and is selectable via AT+CMEE.

A result error code terminates the execution of the command and prevents the execution of all remaining commands that may follow on the same command line. If so, neither "ERROR" nor "OK" result codes are returned for these commands. A 30 seconds timeout will deliver "ERROR" when the input of a command is not complete.

Using the wrong command syntax may result in errors: For example, using the execute command syntax although the command has no execute format, causes "ERROR" to be returned. Likewise, using the write command syntax although the command has no write format causes "+CME ERROR: <err>" to be returned.

2. Configuration Commands

The AT Commands described in this chapter allow the external application to determine the TC63's behaviour under various conditions.

2.1 AT&F Set all current parameters to manufacturer defaults

AT&F sets all current parameters to the manufacturer defined profile. All defined GPRS contexts which are not

activated or not online will be undefined (see AT+CGDCONT).

Syntax

Exec Command

AT&F[<value>]

Response(s)

Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4 Last

V.250 ! % % % % % % ! % !

Parameter Description

<value>

[0] Set all TA parameters to manufacturer defaults

(num)

Notes

• List of parameters reset to manufacturer default can be found in Section 21.6, Factory Default Set-

tings Restorable with AT&F.

• In addition to the default profile, you can store an individual one with AT&W. To alternate between the two profiles enter either ATZ (loads user profile) or AT&F (restores factory profile).

• Every ongoing or incoming call will be terminated.

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