AT Command Set
Siemens Cellular Engines
MC35 Module
MC35 Terminal
Version: 04.00
DocID: MC35_ATC_01_V04.00
AT Command Set
Document Name: AT Command Set
Siemens Cellular Engines
Version: 04.00
Date: 02.04.2002
Doc Id: MC35_ATC_01_V04.00
Status: Released
General note
With respect to any damages arising in connection with the described product or this document,
Siemens shall be liable according to the General Conditions on which the delivery of the described
product and this document are based.
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. Siemens AG customers using
or selling this product for use in such applications do so at their own risk and agree to fully indemnify
Siemens for any damages resulting from illegal use or resale.
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.
Handheld applications such as mobile phones or PDAs incorporating the described product must be in
accordance with the guidelines for human exposure to radio frequency energy. The Specific Absorption Rate (SAR) of the application must be evaluated and approved to be compliant with national and
international safety standards or directives.
Subject to change without notice at any time.
Copyright
Copying of this document and giving it to others and the use or communication of the contents thereof,
are forbidden without express authority. Offenders are liable to the payment of damages. All rights reserved in the event of grant of a patent or the registration of a utility model or design.
Copyright © Siemens AG 2002
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AT Command Set
Contents
0 Version History............................................................................................. 8
1 Introduction ................................................................................................ 10
1.1 Scope of the document .......................................................................................................... 10
1.2 Supported product versions and related documents.............................................................. 11
1.3 Conventions............................................................................................................................ 12
1.4 Supported character sets ....................................................................................................... 12
1.5 AT command syntax............................................................................................................... 12
1.5.1 Using parameters ................................................................................................................... 13
1.5.2 Combining AT commands on the same command line.......................................................... 13
1.5.3 Entering successive AT commands on separate lines........................................................... 13
2 Standard V.25ter AT Commands .............................................................. 14
2.1 A/ Repeat previous command line ........................................................................................ 14
2.2 +++ Switch from data mode or PPP online mode to command mode .................................. 14
2.3 AT\Qn Flowcontrol................................................................................................................. 15
2.4 ATA Answer a call ................................................................................................................. 15
2.5 ATD Mobile originated call to dial a number ......................................................................... 16
2.6 ATD><mem><n> Originate call to phone number <n> in memory <mem>.......................... 17
2.7 ATD><n> Originate call to phone number selected from active memory ............................. 19
2.8 ATD><str> Originate call to phone number in memory with corresponding field.................. 20
2.9 ATDI Mobile originated call to dialable ISDN number <n>.................................................... 21
2.10 ATDL Redial last telephone number used ............................................................................ 22
2.11 ATE Enable command echo.................................................................................................. 23
2.12 ATH Disconnect existing connection..................................................................................... 23
2.13 ATI Display product identification information ....................................................................... 24
2.14 ATI[value] Display additional identification information ......................................................... 24
2.15 ATL Set monitor speaker loudness ....................................................................................... 25
2.16 ATM Set monitor speaker mode............................................................................................ 25
2.17 ATO Switch from command mode to data mode / PPP online mode ................................... 25
2.18 ATQ Set result code presentation mode ............................................................................... 26
2.19 ATP Select pulse dialling....................................................................................................... 26
2.20 ATS0 Set number of rings before automatically answering the call...................................... 26
2.21 ATS3 Write command line termination character.................................................................. 27
2.22 ATS4 Set response formatting character .............................................................................. 27
2.23 ATS5 Write command line editing character......................................................................... 27
2.24 ATS6 Set pause before blind dialling ....................................................................................28
2.25 ATS7 Set number of seconds to wait for connection completion.......................................... 28
2.26 ATS8 Set number of seconds to wait for comma dial modifier ............................................. 28
2.27 ATS10 Set disconnect delay after indicating the absence of data carrier............................. 29
2.28 ATS18 Extended error report ................................................................................................29
2.29 ATT Select tone dialling......................................................................................................... 29
2.30 ATV Set result code format mode .........................................................................................30
2.31 ATX Set CONNECT result code format and call monitoring ................................................. 30
2.32 ATZ Set all current parameters to user defined profile ......................................................... 31
2.33 AT&C Set circuit Data Carrier Detect (DCD) function mode ................................................. 31
2.34 AT&D Set circuit Data Terminal Ready (DTR) function mode .............................................. 32
2.35 AT&F Set all current parameters to manufacturer defaults................................................... 32
2.36 AT&S Set circuit Data Set Ready (DSR) function mode....................................................... 33
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2.37 AT&V Display current configuration ...................................................................................... 34
2.38 AT&W Store current configuration to user defined profile..................................................... 35
2.39 AT+GCAP Request complete TA capabilities list.................................................................. 36
2.40 AT+GMI Request manufacturer identification ....................................................................... 36
2.41 AT+GMM Request TA model identification ........................................................................... 36
2.42 AT+GMR Request TA revision identification of software status ........................................... 37
2.43 AT+GSN Request TA serial number identification(IMEI) ...................................................... 37
2.44 AT+ILRR Set TE-TA local rate reporting ................................................................................ 38
2.45 AT+IPR Set fixed local rate .................................................................................................... 39
2.45.1 Autobauding ........................................................................................................................... 40
3 AT Commands for FAX.............................................................................. 41
3.1 AT+FBADLIN Bad Line Treshold .......................................................................................... 41
3.2 AT+FBADMUL Error Threshold Multiplier ............................................................................. 42
3.3 AT+FBOR Query data bit order............................................................................................. 42
3.4 AT+FCIG Query or set the Local polling id ........................................................................... 43
3.5 AT+FCLASS Fax: Select, read or test service class............................................................. 43
3.6 AT+FCQ Copy Quality Checking........................................................................................... 44
3.7 AT+FCR Capability to receive............................................................................................... 44
3.8 AT+FDCC Query or set capabilities ...................................................................................... 45
3.9 AT+FDFFC Data Compression Format Conversion ............................................................. 46
3.10 AT+FDIS Query or set session parameters .......................................................................... 47
3.11 AT+FDR Begin or continue phase C data reception............................................................. 48
3.12 AT+FDT Data Transmission.................................................................................................. 48
3.13 AT+FET End a page or document ........................................................................................ 49
3.14 AT+FK Kill operation, orderly FAX abort ............................................................................... 49
3.15 AT+FLID Query or set the Local Id setting capabilities......................................................... 49
3.16 AT+FMDL identify Product Model ......................................................................................... 50
3.17 AT+FMFR Request Manufacturer Identification.................................................................... 50
3.18 AT+FOPT Set bit order independently .................................................................................. 50
3.19 AT+FPHCTO DTE Phase C Response Timeout................................................................... 51
3.20 AT+FREV Identify Product Revision ..................................................................................... 51
3.21 AT+FRH Receive Data Using HDLC Framing ...................................................................... 51
3.22 AT+FRM Receive Data ......................................................................................................... 52
3.23 AT+FRS Receive Silence...................................................................................................... 52
3.24 AT+FTH Transmit Data Using HDLC Framing...................................................................... 52
3.25 AT+FTM Transmit Data......................................................................................................... 53
3.26 AT+FTS Stop Transmission and Wait................................................................................... 53
3.27 AT+FVRFC Vertical resolution format conversion ................................................................ 54
4 AT Commands originating from GSM 07.07 ............................................ 55
4.1 AT+CACM Accumulated call meter (ACM) reset or query.................................................... 55
4.2 AT+CALA Set alarm time ......................................................................................................56
4.3 AT+CAMM Accumulated call meter maximum (ACMmax) set or query ............................... 59
4.4 AT+CAOC Advice of Charge information.............................................................................. 60
4.5 AT+CBST Select bearer service type ................................................................................... 61
4.6 AT+CCFC Call forwarding number and conditions control ...................................................62
4.6.1 Examples: Call forwarding...................................................................................................... 63
4.7 AT+CCLK Real Time Clock................................................................................................... 65
4.8 AT+CCUG: Closed User Group ............................................................................................. 66
4.9 AT+CCWA Call waiting ......................................................................................................... 67
4.10 AT+CEER Extended error report........................................................................................... 68
4.11 AT+CFUN Set phone functionality ........................................................................................ 69
4.12 AT+CGMI Request manufacturer identification...................................................................... 73
4.13 AT+CGMM Request model identification .............................................................................. 73
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4.14 AT+CGMR Request revision identification of software status .............................................. 73
4.15 AT+CGSN Request product serial number identification (IMEI) identical to GSN................ 74
4.16 AT+CHLD Call hold and multiparty ........................................................................................ 74
4.17 AT+CHUP Hang up call......................................................................................................... 75
4.18 AT+CIMI Request international mobile subscriber identity ................................................... 75
4.19 AT+CIND Indicator control ..................................................................................................... 76
4.20 AT+CLCC List current calls of ME......................................................................................... 78
4.21 AT+CLCK Facility lock........................................................................................................... 79
4.21.1 Examples: Enabling / disabling PIN 1 authentication............................................................. 81
4.21.2 Examples: Phone lock ............................................................................................................ 81
4.21.3 Examples: Call barring ........................................................................................................... 83
4.22 AT+CLIP Calling line identification presentation ................................................................... 85
4.23 AT+CLIR Calling line identification restriction (by *# sequence) ........................................... 86
4.24 AT+CLVL Loudspeaker volume level .................................................................................... 87
4.25 AT+CMER Mobile equipment event reporting....................................................................... 88
4.26 AT+CMEE Report mobile equipment error ........................................................................... 89
4.27 AT+CMUT Mute control......................................................................................................... 90
4.28 AT+CMUX Enter multiplex mode .......................................................................................... 91
4.28.1 Restricted use of AT commands in Multiplex mode ............................................................... 92
4.29 AT+COPN Read operator names ......................................................................................... 94
4.30 AT+COPS Operator selection ............................................................................................... 95
4.31 AT+CPAS Mobile equipment activity status .......................................................................... 97
4.32 AT+CPBR Read current phonebook entries ......................................................................... 98
4.33 AT+CPBS Select phonebook memory storage..................................................................... 99
4.34 AT+CPBW Write phonebook entry...................................................................................... 100
4.35 AT+CPIN Enter PIN............................................................................................................. 101
4.35.1 What to do if PIN or password authentication fails?............................................................. 104
4.36 AT+CPIN2 Enter PIN2 ......................................................................................................... 106
4.37 AT+CPUC Price per unit and currency table....................................................................... 108
4.38 AT+CPWD Change password............................................................................................. 109
4.39 AT+CR Service reporting control......................................................................................... 112
4.40 AT+CRC Set Cellular Result Codes for incoming call indication ........................................ 113
4.41 AT+CREG Network registration .......................................................................................... 114
4.42 AT+CRLP Select radio link protocol param. for orig. non-transparent data call ................. 116
4.43 AT+CRSM Restricted SIM access ...................................................................................... 117
4.44 AT+CSCS Set TE character set.......................................................................................... 118
4.45 AT+CSNS Single Numbering Scheme................................................................................ 119
4.46 AT+CSQ Signal quality........................................................................................................ 120
4.47 AT+CSSN Supplementary service notifications .................................................................. 121
4.48 AT+CUSD Unstructured supplementary service data......................................................... 122
4.49 AT+VTD=<n> Tone duration ............................................................................................... 123
4.50 AT+VTS DTMF and tone generation (<Tone> in {0-9, *, #, A, B, C, D})............................. 124
4.51 AT+WS46 Select wireless network ...................................................................................... 125
5 AT commands originating from GSM 07.05 for SMS ............................ 126
5.1 AT+CMGC Send an SMS command................................................................................... 126
5.2 AT+CMGD Delete SMS message....................................................................................... 127
5.3 AT+CMGF Select SMS message format ............................................................................ 127
5.4 AT+CMGL List SMS messages from preferred store ......................................................... 128
5.5 AT+CMGR Read SMS message......................................................................................... 131
5.6 AT+CMGS Send SMS message ......................................................................................... 134
5.7 AT+CMGW Write SMS message to memory...................................................................... 136
5.8 AT+CMSS Send SMS message from storage .................................................................... 138
5.9 AT+CNMA New SMS message acknowledge to ME/TE, only phase 2+............................ 139
5.10 AT+CNMI New SMS message indications .......................................................................... 140
5.11 AT+CPMS Preferred SMS message storage...................................................................... 142
5.12 AT+CSCA SMS service centre address.............................................................................. 144
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5.13 AT+CSCB Select cell broadcast messages ........................................................................ 145
5.14 AT+CSDH Show SMS text mode parameters..................................................................... 146
5.15 AT+CSMP Set SMS text mode parameters........................................................................ 147
5.16 AT+CSMS Select Message Service.................................................................................... 148
6 GPRS AT commands in accordance with GSM 07.07 ........................... 149
6.1 Commands specific to MTs supporting GPRS..................................................................... 149
6.1.1 AT+CGATT GPRS attach and detach................................................................................. 149
6.1.2 AT+CGACT PDP context activate or deactivate................................................................. 150
6.1.3 AT+CGDATA Enter data state ............................................................................................ 151
6.1.4 AT+CGDCONT Define PDP Context ..................................................................................152
6.1.5 AT+CGQMIN Quality of Service Profile (Minimum acceptable).......................................... 154
6.1.6 AT+CGQREQ Quality of Service Profile (Requested) ........................................................158
6.1.7 AT+CGSMS Select service for MO SMS messages........................................................... 162
6.1.8 AT^SGAUTH Set type of authentication for PPP connection ............................................ 163
6.2 Modem compatibility commands to MTs supporting GPRS................................................. 164
6.3 ATD *99# Request GPRS service....................................................................................... 164
6.3.1 ATD *98# Request GPRS IP service ................................................................................. 165
6.3.2 ATH Manual rejection of a network request for PDP context activation ............................. 166
6.4 Using GPRS AT commands (examples) .............................................................................. 167
6.4.1 Miscellaneous AT commands .............................................................................................. 167
6.5 Using the GPRS dial command ATD ................................................................................... 169
7 AT Commands for SIM Application Toolkit (GSM 11.14) ...................... 170
7.1 AT^SSTA Remote-SAT Interface Activation ........................................................................ 171
7.2 ^SSTN Remote-SAT Notification.......................................................................................... 172
7.3 AT^SSTGI Remote-SAT Get Information............................................................................. 173
7.4 AT^SSTR Remote-SAT Response....................................................................................... 174
8 Siemens defined AT commands for enhanced functions..................... 175
8.1 AT+CXXCID Display card ID (identical to AT^SCID) .......................................................... 175
8.2 AT^MONI Monitor idle mode and dedicated mode ............................................................. 176
8.3 AT^MONP Monitor neighbour cells ..................................................................................... 178
8.4 AT^SACM Advice of charge and query of ACM and ACMmax........................................... 179
8.5 AT^SBC Battery charging / discharging and charge control ............................................... 180
8.6 AT^SCID Display SIM card identification number............................................................... 183
8.7 AT^SCKS Set SIM connection presentation mode and query SIM connection status ....... 184
8.8 AT^SCNI List Call Number Information............................................................................... 185
8.9 AT^SCTM Set critical operating temperature presentation mode or query temperature.... 186
8.10 AT^SDLD Delete the “last number redial“ memory............................................................. 188
8.11 AT^SHOM Display Homezone ............................................................................................ 188
8.12 AT^SLCD Display Last Call Duration .................................................................................. 188
8.13 AT^SLCK Facility lock .........................................................................................................189
8.14 AT^SMGL List SMS messages from preferred storage ...................................................... 190
8.15 AT^SMGO Set or query SMS overflow presentation mode or query SMS overflow........... 191
8.16 AT^SMSO Switch off mobile station.................................................................................... 192
8.17 AT^SMGR Read SMS message without set to REC READ ............................................... 192
8.18 AT^SM20 Set M20 Compatibility......................................................................................... 193
8.19 AT^SNFA Set or query microphone attenuation ................................................................. 194
8.20 AT^SNFD Set audio parameters to manufacturer default values ....................................... 195
8.21 AT^SNFI Set microphone path parameters ........................................................................ 196
8.22 AT^SNFM Mute microphone ............................................................................................... 197
8.23 Audio programming model ................................................................................................... 197
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8.24 AT^SNFO Set audio output (= loudspeaker path) parameter ............................................. 198
8.25 AT^SNFS Select audio hardware set.................................................................................. 199
8.26 AT^SNFV Set loudspeaker volume..................................................................................... 200
8.27 AT^SNFW Write audio setting in non-volatile store ............................................................ 200
8.28 AT^SPBC Search the first entry in the sorted telephone book ........................................... 201
8.29 AT^SPBG Read entry from active telephone book via sorted index................................... 202
8.30 AT^SPBS Steps the selected phonebook alphabetically .................................................... 203
8.31 AT^SPIC Display PIN counter............................................................................................. 204
8.32 AT^SPLM Read the PLMN list ............................................................................................ 205
8.33 AT^SPLR Read entry from the preferred operators list ...................................................... 206
8.34 AT^SPLW Write an entry to the preferred operators list ..................................................... 207
8.35 AT^SPWD Change password for a lock.............................................................................. 208
8.36 AT^SSDA Set Display Availability ...................................................................................... 210
8.37 AT^SSYNC Configure SYNC Pin........................................................................................ 211
8.38 AT^STCD Display Total Call Duration................................................................................. 213
9 APPENDIX................................................................................................. 214
9.1 Summary of ERRORS and Messages ................................................................................. 214
9.1.1 Summary of CME ERRORS related to GSM 07.07 ............................................................. 214
9.1.2 Summary of GPRS-related CME ERRORS ......................................................................... 215
9.1.3 Summary of CMS ERRORS related to GSM 07.05 ............................................................. 216
9.1.4 Summary of Unsolicited Result Codes (URC) ..................................................................... 218
9.1.5 Result codes......................................................................................................................... 220
9.1.6 Cause Location ID for the extended error report (AT+CEER) ............................................. 220
9.1.7 GSM release cause for L3 Radio Resource (RR) (AT+CEER) ........................................... 221
9.1.8 SIEMENS release cause for L3 Radio Resource (RR) (AT+CEER)................................... 221
9.1.9 GSM release cause for L3 Mobility Management (MM) (AT+CEER)................................... 222
9.1.10 SIEMENS release cause for L3 Mobility Management (MM) (AT+CEER)........................... 223
9.1.11 GSM release cause for L3 Call Control (CC) (AT+CEER) ................................................... 223
9.1.12 SIEMENS release cause for L3 Call Control (CC) (AT+CEER)........................................... 224
9.1.13 SIEMENS release cause for L3 Advice of Charge (AOC) (AT+CEER) .............................. 225
9.1.14 GSM release cause for Supplementary Service call (AT+CEER)........................................ 225
9.1.15 Siemens release cause for Call related Supplementary Services (CRSS) (AT+CEER).... 226
9.1.16 GSM release cause for Session Management (SM) (AT+CEER)........................................ 226
9.1.17 SIEMENS release cause for Session Management (SM) (AT+CEER)................................ 227
9.1.18 SIEMENS release cause for GPRS API (AT+CEER) ......................................................... 227
9.1.19 SIEMENS release cause for Embedded Netcore (AT+CEER) .......................................... 228
9.2 Summary of PIN requiring AT Commands ........................................................................... 229
9.3 AT commands available before entering the SIM PIN .........................................................231
9.4 Standard GSM service codes............................................................................................... 233
9.4.1 Additional notes on ^SCCFC, ^SCCWA, ^SCLCK............................................................... 235
9.5 Alphabet tables..................................................................................................................... 237
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AT Command Set
0 Version History
This chapter reports modifications and improvements over previous versions of the document.
"AT Command Set" Version MC35-ATC_01_V03.02 => MC35_ATC_01_V04.00
Chapter Page AT command What is new
2.2 14 +++ Chapter revised.
2.5 16
2.17 25 ATO Chapter revised.
4.8 66 AT+CCUG New AT command: Closed User Group.
4.9 67 AT+CCWA New AT command: Call Waiting.
4.19 76 AT+CIND New AT command: Indicator control.
4.21 79 AT+CLCK Under parameter “PS” lock, the following statement
4.25 88 AT+CMER New AT command: Mobile equipment event reporting.
8.2
8.3
8.19 194 AT^SNFA New AT command: Set or query microphone attenua-
8.36 210 AT^SSDA New AT command: Set Display Availability
9.1.4 218 +CIEV: <text> added to list of URCs
9.2 - 9.3 229f - 231f AT+CCUG,
176f
178
ATD Parameters “G” and “g” for Closed User Group added.
has been removed: “ME may remember numbers of
previously used cards.”
AT^MONI
At^MONP
AT+CCWA,
AT+CMER,
AT^SSDA
Statement regarding RING line revised.
tion
Added to Chapter 9.2 (PIN 1 required).
AT+CIND
AT^SNFA
"AT Command Set" Version MC35-ATC_01_V02.00 => MC35_ATC_01_V03.02
Chapter Page AT command What is new
1.5.2 13 Note regarding sequential order of concatenated commands added.
4.5 61 AT+CBST Command syntax corrected: Parameter <speed> is
4.6 62 AT+CCFC New <class> parameters added.
4.11 69 AT+CFUN SLEEP mode described in greater detail
4.21 79 AT+CLCK New <class> parameters added.
4.35.1 104 AT+CPIN Timing algorithm of incorrect password corrected
4.46 120 AT+CSQ Note added: Realistic BER values can be obtained
5.11 142 AT+CPMS Difference between SM, ME and MT storage ex-
6.1.8 163 AT^SGAUTH New command to specify protocol for PPP authenti-
Added to Chapter 9.3 (PIN1 independent)
mandatory.
only if there is a call in progress.
plained.
cation
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8.2 176f AT^MONI Channel numbers are now issued in the form of 4-digit
numbers. Therefore, the examples on page 176 have
been updated.
Frequency hopping will now be indicated with “h” (instead of the previously used “0”.
Notes modified: If during a connection the radio cell is
changed, the parameters LAC, Cell, NCC BCC, PWR
and RXLev of the ‘Serving Cell’ part will not be updated.
8.7 184 AT^SCKS Notes regarding empty SIM card tray modified.
8.9 186 AT^SCTM Chapter revised due to improved presentation of temperature shutdown URCs.
9.2 - 9.3 229f - 231f AT+CXXCID
AT^SCID
Both commands now independent of PIN authentication
9.1 - 9.1.19
9.1.12
9.4
9.4.1
214 - 228f
224
233f
235f
AT^SGAUTH
Lists of result codes restructured.
Notification number 300 added: “Called party barred incoming call”
*# codes Chapter revised. Further examples added.
Command added to list of PIN independent commands
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AT Command Set
1 Introduction
1.1 Scope of the document
This document presents the AT Command Set for the Siemens cellular engines
MC35 Module
MC35 Terminal
The AT commands detailed in this document are supported by both products. Where differences occur, they are noted in the chapter that refers to the command. In the present version, the only exceptions concern these commands:
Table 1: Product specific use of AT commands
AT command MC35 Module MC35 Terminal
AT+CALA, Chapter 4.2 Alarm mode and reminder call
fully applicable
Does not support Alarm mode.
Please ignore any information relating to the subject.
The reminder call can be used as
described.
AT^SSYNC, Chapter 8.37 SYNC pin may be assigned dif-
ferent functions: <mode> 0 or 1.
AT^SBC, Chapter 8.5 All functions fully applicable Command not applicable.
MC35 and MC35 Terminal feature basic SIM Application Toolkit (SAT) functionality which enables SIM
cards to run additional network based applications, such as value added services, online banking, information services etc. To give you an idea, Chapter 7 provides a brief overview. In greater detail, the
SAT functions and the required AT commands are described in [4].
SYNC pin supports only <mode>=1
(LED status).
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1.2 Supported product versions and related documents
Please note that this AT Command Set is intended for MC35 Version 04.00
Related documents
[1] MC35 Hardware Interface Description, Version 04.00
[2] Release Notes: MC35, Version 04.00
[3] MC35 GPRS Startup User's Guide
[4] MC35 Remote-SAT User's Guide, as of Version 04.00
[5] MC35 Multiplexer User's Guide, Version 04.00
[6] Application Note 16: Updating MC35 Firmware, Version 02.00
[7] MC35 Terminal Hardware Interface Description
[8] TC35 MC35 Terminal User's Guide
[9] Application Note 02: Audio Interface
[10] Multiplex Driver Developer’s Guide for Windows 2000 and Windows XP
[11] Multiplex Driver Installation Guide for Windows 2000 and Windows XP
Prior to using MC35 / MC35T or upgrading to a new firmware release, be sure to carefully read and
understand the latest product information provided in the Release Notes.
To visit the Siemens Website you can use the following link:
http://www.siemens.com/wm
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1.3 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,
MC35 is short for the engine type and MC35T 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).
1.4 Supported character sets
The ME uses 2 character sets: GSM 03.38 (7 bit, see character tables in Chapter 9.5, pg. 234) and
UCS2 (16 Bit, refer ISO/IEC 10646). Also refer to Chapter 4.44 for information about selecting the
character set.
When using an ASCII terminal to 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 is presented. Any ASCII terminal then
will show wrong responses.
Table 2: Character definitions depending on alphabet (examples)
GSM 03.38
character
GSM character
hex. value
Corresponding
ASCII character
ASCII
Esc sequence
Hex
Esc sequence
Ö 5C \ \5C 5C 35 43
" 22 “ \22 5C 32 32
ò 08 BSP \08 5C 30 38
@ 00
1)
Use of the GSM Null character may cause problems on application level when using a ´C´-function
1)
NULL \00 5C 30 30
as “strlen()“ and should thus be represented by an escape sequence.
1.5 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.
Table 3: Types of AT commands and responses
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 pa-
rameter or parameters
Write command AT+CXXX=<...> This command sets user-definable parameter values.
Execution command AT+CXXX The execution command reads non-variable parameters
affected by internal processes in the GSM engine.
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1.5.1 Using parameters
• Default parameters are underlined throughout this document.
• Optional parameters are enclosed in square brackets. If optional parameters are omitted, the cur-
rent settings are used until you change them.
• Optional parameters or subparamters 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. Example:
AT+CPBW=,<number>,<type>,<text> writes a phonebook entry to the first free memory location.
AT+CPBW=<index>,<number>,<type>,<text> writes a phonebook entry to the memory location
specified by <index>.
• 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.
• In case of using V.25ter commands without giving an optional parameter, its value is assumed to
be 0.
1.5.2 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 commands 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. Otherwise, the responses may not be in the expected order.
Table 4: Illegal combinations of AT commands
V.25ter commands With
GSM 7.07 commands With
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 is your concern, avoid concatenating commands on the same line.
FAX commands, Prefix AT+F
Siemens commands, Prefix AT^S
1.5.3 Entering successive AT commands on separate lines
When you enter a series of AT commands on separate lines, leave a pause between the preceding
and the following command until OK appears. This avoids sending too many AT commands at a time
without waiting for a response for each.
MC35_ATC_01_V04.00 Page 13 of 238 02.04.2002
AT Command Set
2 Standard V.25ter AT Commands
These AT Commands are related to ITU-T (International Telecommunication Union, Telecommunication sector) V.25ter document.
MC35 supports the registers S0-S29. You can change S0,S3,S4,S5,S6,S7,S8,S10,S18 by using the
appropriate ATSn commands. All the other registers are read-only and for internal usage only!
2.1 A/ Repeat previous command line
Execute commandA/Response
Repeats previous command line. Line does not need to end with terminating
character.
Parameter
Reference
V.25ter
Note
• After beginning with the character “a“ or „A“, a second character “t“ ,”T“ or “/“
has to follow. In case of using a wrong second character, it is necessary to
start again with character “a“ or “A“.
• If autobauding is active (see +IPR, pg. 38) A/ (and a/) cannot be used.
2.2 +++ Switch from data mode or PPP online mode to command mode
Execute command
+++
Reference
V.25ter
Response
This command is only available during a CSD call or a GPRS connection. The
+++ character sequence causes the TA to cancel the data flow over the AT interface and switch to command mode. This allows you to enter AT commands
while maintaining the data connection to the remote device or, accordingly, the
GPRS connection.
OK
To prevent the +++ escape sequence from being misinterpreted as data, it must
be preceded and followed by a pause of at least 1000 ms. The +++ characters
must be entered in quick succession, all within 1000 ms.
Note:
• To return from command mode to data or PPP online mode: Enter ATO as described in Chapter 2.17.
MC35_ATC_01_V04.00 Page 14 of 238 02.04.2002
AT Command Set
2.3 AT\Qn Flowcontrol
Execute command
AT\Q<n>
Reference Note
Response
OK
Parameter
<n> 0 AT\Q0 disables flow control
1 AT\Q1 XON/XOFF software flow control
2 AT\Q2 only CTS by DCE
3 AT\Q3 RTS/CTS
Line state refers to RS-232 levels.
2.4 ATA Answer a call
Execute command
ATA
TA causes remote station to go off-hook (e.g. answer call).
Note1: Any additional commands on the same command line are ignored.
Note2: This command may be aborted generally by receiving a character during
execution. It can´t be aborted in some connection setup states, such as
handshaking.
Reference
V.25ter
Response
Response in case of data call, if successfully connected:
CONNECT<text> TA switches to data mode.
Note: <text> output only if +ATX parameter setting with value > 0.
Response in case of voice call, if successfully connected:
OK
When TA returns to command mode after call release:
OK
Response if no connection:
NO CARRIER
Parameter
Note
See also AT+ATX and Chapter 9.1.5 for <text>
MC35_ATC_01_V04.00 Page 15 of 238 02.04.2002
AT Command Set
2.5 ATD Mobile originated call to dial a number
Execute command
ATD[<n>]
[<mgsm][;]
This command can be used to set up outgoing voice, data or fax calls. It also
serves to control supplementary services.
Note:
The command may be aborted generally when receiving an ATH command during
execution. It can´t be aborted in some connection setup states, such as handshaking. Different behaviour between voice and data call. Behaviour depends on
parameter setting of AT^SM20. Voice call setup terminates immediately with OK.
Data call setup terminates when call has been established.
Response
If no dialtone (parameter setting ATX2 or ATX4):
NO DIALTONE
If busy (parameter setting ATX3 or ATX4):
BUSY
If a connection cannot be set up:
NO CARRIER
Reference
V.25ter/GSM
07.07
If successfully connected and non-voice call:
CONNECT<text> TA switches to data state.
Note: <text> output only if +ATX parameter setting with value > 0.
When TA returns to command mode after call release:
OK
If successfully connected and voice call:
OK
Parameter
<n> String of dialling digits and optionally V.25ter modifiers (dialling digits):
0-9, * , #, +, A, B, C
V.25ter modifiers: these are ignored: ,(comma), T, P, !, W, @
Emergency call:
<n> = 112 worldwide number (no SIM needed)
<mgsm> String of GSM modifiers:
I Activates CLIR (disables presentation of own phone number to called
party)
i Deactivates CLIR (enables presentation of own phone number to
called party)
G Activate Closed User Group explicit invocation for this call only.
g Deactivate Closed User Group explicit invocation for this call only.
<;> Only required to set up voice calls. TA remains in command mode.
Note
• Parameter ”l“ and ”i“ only if no *# code is within the dial string.
• <mgsm> is not supported for data calls.
• <n> is default for last number that can be dialled by ATDL.
• See also +ATX and chapter 9.1.5 for <text>.
• The *# codes can only be used with voice calls (i.e.if “;” is appended).
• If ATD is used with a USSD command (e.g. ATD*100#;) an AT+CUSD=1 is
executed implicitly (see AT+CUSD, pg. 122).
• Parameter ‘G’ or ‘g’ will be ignored if Closed User Group was already activated,
or accordingly, deactivated with AT+CCUG command.
MC35_ATC_01_V04.00 Page 16 of 238 02.04.2002
AT Command Set
2.6 ATD><mem><n> Originate call to phone number <n> in memory <mem>
This command allows you to dial a phone number from a specific phonebook. To initiate a call, enter
a two letter abbreviation for the phonebook <mem>, followed by the memory location <n> of the desired entry. The location range of each phonebook can be queried by AT+CPBR (see Chapter 4.32).
Execute command
ATD><mem>
<n>[<mgsm>][;]
TA attempts to set up an outgoing call to the specified number.
Note: This command may be aborted generally by receiving a character during
execution. Abortion is not possible during some states of connection
setup such as handshaking.
Response
If error is related to ME functionality:
+CME ERROR: <err>
If no dialtone (parameter setting ATX2 or ATX4):
NO DIALTONE
If busy (parameter setting ATX3 or ATX4):
BUSY
If connection cannot be set up:
NO CARRIER
If successfully connected and non-voice call:
CONNECT<text> TA switches to data state.
Note: <text> output only if +ATX parameter setting with value > 0.
When TA returns to command mode after call release:
OK
If successfully connected and voice call:
OK
Parameter
<mem> phonebook:
"SM” SIM phonebook (storage depending on SIM card)
”FD” SIM fixdialling phonebook (pos. 1-7)
”LD” SIM last-dialling-phonebook (usually the last 10 numbers di-
aled are stored on the SIM card, no matter whether or not the
calls were successfully set up)
”MC” ME missed (unanswered received) calls list (up to 10 numbers)
”RC” SIM received calls list
”ME” ME Phonebook (up to 50 numbers)
”ON” SIM (or ME) own numbers (MSISDNs) list
Note: <mem> must be included in quotation marks (""), if parameter
<mgsm> is used. If not, quotation marks are optional.
<n> Integer type memory location in the range of locations available in
the selected memory, i.e. the index number returned by AT+CPBR.
<mgsm> I Activates CLIR (disables presentation of own phone number to
called party)
i Deactivates CLIR (enables presentation of own phone number
MC35_ATC_01_V04.00 Page 17 of 238 02.04.2002
AT Command Set
<;> Only required to set up voice calls. TA remains in command mode.
to called party)
Reference
V.25ter/GSM
07.07
Example
Note
• There is no <mem> for emergency call (“EN”).
• Command is not supported for data call!
• Parameter <mgsm> only if no *# code is within the dial string.
• The *#-codes can only be used with voice calls (i.e.if “;” is appended).
• See also ATX and chapter 9.1.5 for <text>.
To query the location number of the phonebook entry:
AT+CPBR=1,xx
TA returns the entries available in the active phonebook.
To dial a number from the SIM phonebook, for example the number stored to location 15:
ATD>SM15;
OK
To dial a phone number stored in the last dial memory on the SIM card:
ATD>LD9;
OK
MC35_ATC_01_V04.00 Page 18 of 238 02.04.2002
AT Command Set
2.7 ATD><n> Originate call to phone number selected from active memory
This command can be used to dial a phone number selected from the active memory. The active
memory is the phonebook selected with AT+CPBS (see Chapter 4.33). To set up a call simply enter
the memory location of the desired entry. The memory location range of each phonebook can be
queried by AT+CPBR (see Chapter 4.32).
Execute command
ATD><n>[<mgsm>][;]
TA attempts to set up an outgoing call to the stored number.
Note: This command may be aborted generally by receiving a character
during execution. It can´t be aborted in some connection setup states,
such as handshaking.
Response
If error is related to ME functionality:
+CME ERROR: <err>
If no dialtone (parameter setting ATX2 or ATX4):
NO DIALTONE
If busy (parameter setting ATX3 or ATX4):
BUSY
If a connection cannot be set up:
NO CARRIER
If successfully connected and non-voice call:
CONNECT<text> TA switches to data state.
Note: <text> output only if +ATX parameter setting with value > 0.
Reference
V.25ter/GSM 07.07
When TA returns to command mode after call release:
OK
If successfully connected and voice call:
OK
Parameter
<n> integer type memory location should be in the range of locations
available in the memory used, i.e. the index number returned by
AT+CPBR.
<mgsm> I Activates CLIR (disables presentation of own phone number to
called party)
i Deactivates CLIR (enables presentation of own phone number
to called party)
<;> Only required to set up voice calls. TA remains in command mode.
Note
• Parameter <mgsm> only if no *# code is within the dial string.
• Command is not supported for data call!
• The *# codes can only be used with voice calls (i.e.if “;” is appended).
• See also +ATX and chapter 9.1.5 for <text>.
MC35_ATC_01_V04.00 Page 19 of 238 02.04.2002
AT Command Set
2.8 ATD><str> Originate call to phone number in memory with corresponding field
This command searches the active phonebook for a given string <str> and dials the assigned phone
number. The active phonebook is the one set with AT+CPBS.
Execute command
ATD><str>[mgsm][;]
TA attempts to set up an outgoing call to stored number
Note: This command may be aborted generally by receiving a character dur-
ing execution. It can´t be aborted in some connection setup states,
such as handshaking.
Response
If error is related to ME functionality:
+CME ERROR: <err>
If no dialtone (parameter setting ATX2 or ATX4):
NO DIALTONE
If busy (parameter setting ATX3 or ATX4):
BUSY
If a connection cannot be set up:
NO CARRIER
If successfully connected and non-voice call:
CONNECT<text> TA switches to data state.
Note: <text> output only if +ATX parameter setting with value > 0.
When TA returns to command mode after call release:
OK
Reference
V.25ter/GSM 07.07
If successfully connected and voice call:
OK
Parameter
<str> string type value (“x”), which should equal an alphanumeric field in
at least one phonebook entry in the searched memories; used character set should be the one selected with Select TE Character Set
+CSCS. <str> can contain escape sequences as described in
chapter “Supported character sets“, pg. 12.
<str> must be wrapped in quotation marks (""), if escape sequences
or parameter <mgsm> are used or if the alphanumeric strings contains a blank. If not, quotation marks are optional.
<mgsm> I Activates CLIR (disables presentation of own phone number to
called party)
i Deactivates CLIR (enables presentation of own phone number to
called party)
<;> Only required to set up voice calls. TA remains in command mode.
Note
Command is not supported for data calls! See also ATX and Chapter 9.1.5 for
<text>
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AT Command Set
2.9 ATDI Mobile originated call to dialable ISDN number <n>
Execute command
ATDI<n>[;]
TA attempts to set up an outgoing call to ISDN number.
Note: This command may be aborted generally by receiving a character during
execution. This command cannot be aborted in some connection setup
states, such as handshaking.
Response
If no dialtone (parameter setting ATX2 or ATX4):
NO DIALTONE
If busy (parameter setting ATX3 or ATX4):
BUSY
If a connection cannot be set up:
NO CARRIER
Reference
V.25ter
If successful connected and non-voice call:
CONNECT<text> TA switches to data state.
Note: <text> output only if +ATX parameter setting with value > 0.
When TA returns to command mode after call release:
OK
If successfully connected and voice call:
OK
Parameter
<n> [+]<d> phone number
string with maximum length of 20 characters
+ international dialling format
<d> ISDN number
string of digits: +,0-9, A, B, C
<;> voice call
MC35_ATC_01_V04.00 Page 21 of 238 02.04.2002
AT Command Set
2.10 ATDL Redial last telephone number used
Execute command
ATDL[;]
This command redials the last voice and data call number used in the ATD command.
• To redial the last data call number simply enter ATDL
• To redial the last voice call number type ATDL;
Note: The command may be aborted generally by receiving a character during
execution. This command cannot be aborted in some connection setup
states, such as handshaking.
Response
If there is no last number or number is not valid:
+CME ERROR
If no dialtone (parameter setting ATX2 or ATX4):
NO DIALTONE
Reference
V.25ter
If busy (parameter setting ATX3 or ATX4):
BUSY
If a connection cannot be set up:
NO CARRIER
If successfully connected and non-voice call:
CONNECT<text> TA switches to data state.
Note: <text> output only if +ATX parameter setting with value > 0.
When TA returns to command mode after call release:
OK
If successfully connected and voice call:
OK
Parameter
<;> voice call
Note
In case of voice calls “;” is necessary.
MC35_ATC_01_V04.00 Page 22 of 238 02.04.2002
AT Command Set
2.11 ATE Enable command echo
Write command
ATE[<value>]
This setting determines whether or not the TA echoes characters received from
TE during command state.
Response
OK
Parameter
<value> 0 Echo mode off
1 Echo mode on
Reference
V.25ter
Note
In case of using the command without parameter, <value> is set to 0.
2.12 ATH Disconnect existing connection
Execute command
ATH[n]
Reference
V.25ter
Disconnects any call in progress, such as voice calls, CSD data calls and active
GPRS connections. Cancels an active PDP context.
Response
OK
Note:
OK is issued after circuit 109 (DCD) is turned off (RS-232 level), if it was previously on.
Parameter
<n> 0 terminate call
Note
Using ATH in Multiplex mode (AT+CMUX)
• ATH terminates every data call, even if it is issued via logical channels 2 or 3.
• This behaviour is in accordance with ITU-T V.25 ter; (07/97, see “6.3.6 Hook
control“: "ATH is terminating any call in progress")
Using ATH while GPRS is active (PDP context is activated or online):
• CAUTION: The execution of ATH cancels an active PDP context. This takes
effect no matter whether ATH was used to end a voice or data (CSD) call, to
manually reject a network requested PDP context activation as described in
Chapter 6.3.2 or to terminate a call on one of the virtual channels in Multiplex
mode.
The context deactivation can be avoided by terminating a current call with
AT+CHLD=1 instead of ATH. See Chapter 4.16 for AT+CHLD.
MC35_ATC_01_V04.00 Page 23 of 238 02.04.2002
AT Command Set
2.13 ATI Display product identification information
Execute command
ATI
Response
ME issues product information text
SIEMENS
REVISION MC35 xx.yy
xx.yy
OK
Explanation of “Revision“ parameter: Version xx and variant yy of software release.
Reference
Note
V.25ter
2.14 ATI[value] Display additional identification information
Execute command
ATI[value]
Reference
V.25ter
Response
<value>=9 delivers the following information. Other values are not supported and
only return OK.
ATI9 SIEMENS Gipsy Soft Protocolstack V2.550
Note
MC35_ATC_01_V04.00 Page 24 of 238 02.04.2002
AT Command Set
2.15 ATL Set monitor speaker loudness
Execute command
ATL[val]
Response
OK
Reference
V.25ter
Note
• The two commands ATL and ATM are implemented only for V.25ter compatibility reasons and have no effect.
• In multiplex mode the command is supported on logical channel 1 only.
2.16 ATM Set monitor speaker mode
Execute command
ATM[val]
Reference
V.25ter
Response
OK
Note
• The two commands ATL and ATM are implemented only for V.25ter compatibility reasons and have no effect.
• In multiplex mode the command is supported on logical channel 1 only.
2.17 ATO Switch from command mode to data mode / PPP online mode
Execute command
ATO[n]
Response
ATO is the corresponding command to the +++ escape sequence described in
Chapter 2.2: When you have established a CSD call or a GPRS connection and
TA is in command mode, ATO causes the TA to resume the data or GPRS connection and takes you back to data mode or PPP online mode.
Reference
V.25ter
If connection is not successfully resumed
NO CARRIER
or
TA returns to data or PPP online mode from command mode
CONNECT <text>
Note: <text> output only if +ATX parameter setting with value > 0.
Parameter
<n> 0 switch from command mode to data or PPP online mode
Note
MC35_ATC_01_V04.00 Page 25 of 238 02.04.2002
AT Command Set
2.18 ATQ Set result code presentation mode
Write command
ATQ[<n>]
Response
Specifies whether or not the TA transmits any result code to the TE. Information
text transmitted in response is not affected by this setting.
If <n>=0:
OK
If <n>=1:
(none)
Parameter
<n> 0 DCE transmits result code
1 Result codes are suppressed and not transmitted
Reference
Note
V.25ter
2.19 ATP Select pulse dialling
Execute command
ATP
Reference
V.25ter
Response
OK
Note
No effect for GSM
2.20 ATS0 Set number of rings before automatically answering the call
Read command
ATS0?
Write command
ATS0=<n>
Response
<n> OK
Specifies whether or not the TA will accept an incoming data / fax call without
user intervention. <n> determines the number of rings to wait before the TA will
automatically answer.
Response
OK
Parameter
<n> 000 disables automatic answer mode
001-255 enables automatic answering after specified number of rings
Reference
V.25ter
Note
• Auto-answer mode is only applicable to data or fax calls.
• If <n> is set too high, the calling party may hang up before the call can be
automatically answered.
• The correlation between ATS7 and ATS0 is important.
Example: Call setup may fail if ATS0=20 and ATS7=30.
MC35_ATC_01_V04.00 Page 26 of 238 02.04.2002
AT Command Set
2.21 ATS3 Write command line termination character
Read command
ATS3?
Write command
ATS3=<n>
Response
<n> OK
This parameter setting determines the character recognized by TA to terminate
an incoming command line.
Response
OK
Parameter
<n> 000-013-127 command line termination character
Reference
Note
V.25ter
2.22 ATS4 Set response formatting character
Read command
ATS4?
Write command
ATS4=<n>
Reference
V.25ter
Response
<n> OK
This parameter setting determines the character generated by the TA for result
code and information text.
Response
OK
Parameter
<n> 000-010-127 response formatting character.
Note
2.23 ATS5 Write command line editing character
Read command
ATS5?
Write command
ATS5=<n>
Response
<n> OK
This parameter setting determines the character recognized by TA as a request
to delete the immediately preceding character from the command line.
Response
OK
Parameter
<n> 000-008-127 command line editing character
Reference
Note
V.25ter
MC35_ATC_01_V04.00 Page 27 of 238 02.04.2002
AT Command Set
2.24 ATS6 Set pause before blind dialling
Read command
ATS6?
Response
<n> OK
Write command
ATS6=<n>
No effect for GSM
Response
OK
Parameter
<n> 000-255 number of seconds to wait before blind dialling.
Reference
Note
V.25ter
2.25 ATS7 Set number of seconds to wait for connection completion
Read command
ATS7?
Write command
ATS7=<n>
Reference
V.25ter
Response
<n> OK
Specifies the number of seconds the TA will wait for the completion of the call
setup when answering or originating a data call. Also referred to as "no answer
timeout". To put it plainly, this is the time to wait for the carrier signal. If no carrier
signal is received within the specified time, the TA hangs up.
Response
OK
Parameter
<n>0 <n> 000 – 060 no. of seconds to wait for connection completion.
Note
• Values greater than 60 cause no error, but <n> will be restored to the maxi-
mum value of 60.
• If called party has specified a high value for ATS0=<n>, call setup may fail.
• The correlation between ATS7 and ATS0 is important.
Example: Call setup may fail if ATS7=30 and ATS0=20.
• ATS7 is only applicable to data calls.
2.26 ATS8 Set number of seconds to wait for comma dial modifier
Read command
ATS8?
Write command
ATS8=<n>
Reference
V.25ter
MC35_ATC_01_V04.00 Page 28 of 238 02.04.2002
Response
<n> OK
No effect for GSM
Response
OK
Note
AT Command Set
2.27 ATS10 Set disconnect delay after indicating the absence of data carrier
Read command
ATS10?
Response
<n> OK
Write command
ATS10=<n>
This parameter setting determines the amount of time, that the TA remains connected in absence of a data carrier. If the data carrier is detected before disconnect, the TA remains connected.
Response
OK
Parameter
<n> 001-002-254 number of tenths of seconds of delay
Reference
Note
V.25ter
2.28 ATS18 Extended error report
Test command
ATS18?
Execute command
ATS18=<n>
Response
<n> OK
TA returns an extended report of the reason for the last call release and location.
<n> 0 – 255, odd numbers set extended error report and even
numbers disable this feature.
Response
+Cause: <location ID>: <reason > OK
Parameter
<location ID> Location ID as number code (see subclause 9.1.6.
<reason> Reason for last call release as number code (see subclause
Reference
Siemens
Note
This command works for data calls only. For voice calls please use AT+CEER.
2.29 ATT Select tone dialling
Execute command
ATT
Reference
V.25ter
Response
OK
Note
No effect for GSM
9.1.6).
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AT Command Set
2.30 ATV Set result code format mode
Write command
ATV[<value>]
Response
This parameter setting determines the contents of the header and trailer transmitted with result codes and information responses.
When <value> =0
0
When <value> =1
OK
Parameter
<value>
0 Information response: <text><CR><LF>
Short result code format: <numeric code><CR>
1 Information response: <CR><LF><text><CR><LF>
Long result code format: <CR><LF><verbose code><CR><LF>
Reference
V.25ter
Note
In case of using the command without parameter <value> will be set to 0.
Information responses described in chapter 9 (verbose code and numeric code).
2.31 ATX Set CONNECT result code format and call monitoring
Write command
ATX[<value>]
Response
This parameter setting determines whether or not the TA detects the presence of
dial tone and busy signal and whether or not TA transmits particular result codes.
OK
Parameter
<value>
0 CONNECT result code only returned, dial tone and busy de-
tection are both disabled
1 CONNECT<text> result code only returned, dial tone and busy
detection are both disabled
2 CONNECT<text> result code returned, dial tone detection is
enabled, busy detection is disabled
3 CONNECT<text> result code returned, dial tone detection is
disabled, busy detection is enabled
4 CONNECT<text> result code returned, dial tone and busy de-
tection are both enabled
Reference
V.25ter
MC35_ATC_01_V04.00 Page 30 of 238 02.04.2002
Note
Related <text> see chapter 9.1.5.
AT Command Set
2.32 ATZ Set all current parameters to user defined profile
Execute command
ATZ[<value>]
Response
TA sets all current parameters to the user profile stored with AT&W (see Chapter
2.38 on page 35). If a connection is in progress, it will be terminated. All defined
GPRS contexts which are not activated or not online will be undefined (see
+CGDCONT,+CGQREQ,+CGQMIN commands). The user defined profile is
stored to the non-volatile memory.
Note: If invalid, the user profile will be reset to the factory default profile. Any additional commands on the same command line will be ignored. A delay of 300 ms
is required before next command is sent, otherwise “OK” response may be corrupted.
OK
Parameter
<value> 0 Reset to user profile
Reference
V.25ter
Note
The GSM engines referred to in this manual can be assigned two profiles: the
factory profile (restored with AT&F) and the user profile (stored with AT&W). See
Chapter 2.35 for details on AT&F.
2.33 AT&C Set circuit Data Carrier Detect (DCD) function mode
Write command
AT&C[<value>]
Reference
V.25ter
Response
This parameter determines how the state of circuit 109(DCD) relates to the detection of received line signal from the distant end.
OK
Parameter
<value> 0 DCD line is always ON.
1 DCD line is ON in the presence of data carrier only.
Note
Line state refers to RS-232 levels.
MC35_ATC_01_V04.00 Page 31 of 238 02.04.2002
AT Command Set
2.34 AT&D Set circuit Data Terminal Ready (DTR) function mode
Write command
AT&D[<value>]
Response
This command is only intended for data calls. The <value> parameter determines
how the TA responds when circuit 108/2 (DTR) is changed from ON to OFF during data mode.
OK
Parameter
<value> 0 TA ignores status on DTR.
1 ON->OFF on DTR: Change to command mode while retaining
the connected call.
2 ON->OFF on DTR: Disconnect data call, change to command
mode. During state DTR = OFF is auto-answer off.
Reference
V.25ter
Note
Line state refers to RS-232 levels.
2.35 AT&F Set all current parameters to manufacturer defaults
Execute command
AT&F[value]
Reference
V.25ter
Response
TA sets all current parameters to the manufacturer defined profile.
OK
Parameter
<value> 0 set all TA parameters to manufacturer default
Note
• List of parameters reset to manufacturer default (sorted by the associated AT
commands):
E, Q, V, X, +CBST, +CRLP, +CRC, +CR, +CNMI, +CMEE, +CSMS, ^SCKS,
^SACM, +CREG, +CLIP, the S Parameters, &D, &C, &S, +CGDCONT,
+CGQREQ, +CGQMIN
• 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). Refer to Chapter 2.38 for AT&W and Chapter 2.32 for
ATZ.
MC35_ATC_01_V04.00 Page 32 of 238 02.04.2002
AT Command Set
2.36 AT&S Set circuit Data Set Ready (DSR) function mode
Write command
AT&S<value>
Response
This parameter determines how the TA sets circuit 107 (DSR) depending on the
communication state of the TA interfacing TE.
OK
Parameter
<value> 0 DSR always on.
1 TA in command mode: DSR is OFF.
TA in data mode: DSR is ON.
Reference
V.25ter
Note
Line state refers to RS-232 levels.
MC35_ATC_01_V04.00 Page 33 of 238 02.04.2002
AT Command Set
2.37 AT&V Display current configuration
Execute command
AT&V[<n>]
without Multiplex
mode or configuration on channel 1 if Multiplex
mode is enabled
Response
TA returns the current parameter setting. The configuration varies depending on
whether or not PIN authentication has been done, or Multiplex mode has been
activated.
Parameter
<n> 0 profile number
PIN entered or not required (see
AT+CPIN, pg. 100)
ACTIVE PROFILE:
E1 Q0 V1 X4 &C1 &D2 &S0 \Q0
S0:000 S3:013 S4:010 S5:008 S6:000 S7:060
S8:000 S10:002 S18:000
+CBST: 7,0,1
+CRLP: 61,61,78,6
+CR: 0
+FCLASS: 0
+CRC: 0
+CMGF: 0
+CNMI: 0,0,0,0,1
+ILRR: 0
+IPR: 0
+CMEE: 0
^SMGO: 0,0
+CSMS: 0,1,1,1
^SACM: 0,"000000","000000"
^SCKS: 0,1
+CREG: 0,1
+CLIP: 0,2
+CAOC: 0
+COPS: 0,0,"operator"
Required PIN not enteredConfiguration
ACTIVE PROFILE:
E1 Q0 V1 X4 &C1 &D2 &S0 \Q0
S0:000 S3:013 S4:010 S5:008 S6:000 S7:060
S8:000 S10:002 S18:000
+CBST: 7,0,1
+CRLP: 61,61,78,6
+CR: 0
+FCLASS: 0
+ILRR: 0
+IPR: 0
+CMEE: 0
^SCKS: 0,1
OK
OK
Logical channels
2 and 3 (Multiplex mode enabled)
Reference
MC35_ATC_01_V04.00 Page 34 of 238 02.04.2002
+CRC: 0
+CMGF: 0
+CNMI: 0,0,0,0,1
+ILRR: 0
+IPR: 19200
+CMEE: 0
^SMGO: 0,0
+CSMS: 0,1,1,1
^SACM: 0,"000000","000000"
^SCKS: 0,1
+CREG: 0, 1
+CLIP: 0,2
+CAOC: 0
+COPS: 0,0,"operator"
OK
Note: Parameter values and order are subject to change.
+ILRR: 0
+IPR: 19200
+CMEE: 0
^SCKS: 0,1
OK
AT Command Set
2.38 AT&W Store current configuration to user defined profile
Execute command
AT&W[<n>]
TA stores the current settings to a user defined profile in the non-volatile memory.
Response
OK or if error is related to ME functionality: ERROR / +CME ERROR: <err>
Parameter
<n> 0 number of profile
Reference
V.25ter
Note
The user defined profile will be loaded automatically after PowerUp. Use ATZ to
restore user profile and AT&F to restore factory settings. Until the first use of
AT&W, ATZ works as AT&F. See Chapter 2.32 for details on ATZ and Chapter
2.35 for AT&F.
List of settings stored to user defined profile:
• ATE, ATQ, ATV, ATX, AT+CRC, AT+CMGF, AT+CSDH, AT+CNMI, AT+ILRR,
AT+CMEE, AT^SMGO, AT+CSMS, AT^SACM, ^SCKS, AT+CREG, AT+CLIP,
AT+COPS.
AT&C, AT&D, AT&S, ATS0, ATS3, ATS4, ATS5, ATS6, ATS7, ATS8, ATS10,
ATS18, AT+FCLASS, AT+CBST, AT+CRLP, AT+CR.
User defined profiles in multiplex mode:
• On each multiplexer channel you can save an individual profile.
• List of settings stored to profile on multiplexer channel 1:
ATE, ATQ, ATV, ATX, AT+CRC, AT+CMGF, AT+CSDH, AT+CNMI, AT+ILRR,
AT+CMEE, AT^SMGO, AT+CSMS, AT^SACM, ^SCKS, AT+CREG, AT+CLIP,
AT+COPS.
AT&C, AT&D, AT&S, ATS0, ATS3, ATS4, ATS5, ATS6, ATS7, ATS8, ATS10,
ATS18, AT+FCLASS, AT+CBST, AT+CRLP, AT+CR.
• List of settings stored to profile on multiplexer channels 2 and 3:
ATE, ATQ, ATV, ATX, AT+CRC, AT+CMGF, AT+CSDH, AT+CNMI, AT+ILRR,
AT+CMEE, AT^SMGO, AT+CSMS, AT^SACM, ^SCKS, AT+CREG, AT+CLIP,
AT+COPS. (Parameters for data call are not relevant on channels 2 and 3.)
MC35_ATC_01_V04.00 Page 35 of 238 02.04.2002
AT Command Set
2.39 AT+GCAP Request complete TA capabilities list
Test command
AT+GCAP=?
Response
OK
Parameter
Execute command
AT+GCAP
Response
TA reports a list of additional capabilities.
+GCAP: <name>
OK
Parameter
<name> e.g.: +CGSM,+FCLASS
Reference
V.25ter
Note
+CGSM: The response text shows which GSM commands of the ETSI standard
are supported.
2.40 AT+GMI Request manufacturer identification
Test command
AT+GMI=?
Execute command
AT+GMI
Reference
V.25ter
Response
OK
Response
TA reports information to identify the manufacturer.
SIEMENS
OK
Note
See also ”AT+CGMI Request manufacturer identification”.
2.41 AT+GMM Request TA model identification
Test command
AT+GMM=?
Execute command
AT+GMM
Reference
V.25ter
MC35_ATC_01_V04.00 Page 36 of 238 02.04.2002
Response
OK
TA reports one or more lines of information text which permit the user to identify
the specific model of device.
MC35
OK
Note
See also ”AT+CGMM Request model identification”.
AT Command Set
2.42 AT+GMR Request TA revision identification of software status
Test command
AT+GMR=?
Response
OK
Execute command
AT+GMR
Response
TA returns product software version identification text.
REVISION xx.yy
OK
xx.yy Version xx and variant yy of software release.
Reference
V.25ter
Note
See also AT+CGMR Request revision identification of software status
2.43 AT+GSN Request TA serial number identification(IMEI)
Test command
AT+GSN=?
Execute command
AT+GSN
Reference
V.25ter
Response
OK
Response
TA reports one or more lines of information text which permit the user to identify
the individual device.
<sn>
OK
Parameter
<sn> IMEI of the telephone(International Mobile station Equipment Identity)
Note
The serial number (IMEI) varies for every individual ME device.
MC35_ATC_01_V04.00 Page 37 of 238 02.04.2002
AT Command Set
2.44 AT+ILRR Set TE-TA local rate reporting
Test command
AT+ILRR=?
Read command
AT+ILRR?
Response
+ILRR: (list of supported <value>s) OK
Parameter
See write command
Response
+ILRR: <value> OK
Parameter
See write command
Write command
AT+ILRR=
<value>
Reference
V.25ter
Example
The write command specifies whether or not an intermediate result code shall indicate the currently used local rate when an incoming or outgoing data call is established. The message is transmitted from the DCE (= TA) to the DTE (=TE) before the final result code of the connection setup (e.g. CONNECT) appears.
Response
OK
Parameter
<value> 0 Disables reporting of local port rate
1 Enables reporting of local port rate
Intermediate result code
+ILLR:<rate>
Parameter
<rate> port rate setting in bit per second
0 (Autobauding, see Chapter 2.45.1)
300
600
1200
2400
4800
9600
19200
38400
57600
115200
Note
ATD030112233445
+ILRR: 57600
CONNECT 9600/RLP
MC35_ATC_01_V04.00 Page 38 of 238 02.04.2002
AT Command Set
2.45 AT+IPR Set fixed local rate
Test command
AT+IPR=?
Read command
AT+IPR?
Response
+IPR: (list of supported auto-detectable <rate>s), (list of supported fixed-only
<rate>s) OK
Parameter
See write command
Response
+IPR: <rate> OK
Parameter
See write command
Write command
AT+IPR=<rate>
Reference
V.25ter
This command specifies the DTE-DCE bitrate. When you set a fix rate, make sure
that both DTE (TE) and DCE (= TA) are configured to the same rate. When you
select autobauding the DCE will automatically recognize the bitrate currently used
by the DTE.
A selected bitrate takes effect following the issue of any result code associated
with this command (e.g. OK).
The setting is stored in the non-volatile memory and will be used whenever the
engine is powered up again. However, in case of autobaud mode (+IPR=0) the
detected DCE bitrate will not be saved and, therefore, needs to be be resynchronized after restarting the GSM engine (see Chapter 2.45.1).
Response
OK or if error is related to ME functionality: ERROR / +CME ERROR: <err>
Parameter
<rate> bit rate per second
0 (Autobauding, see Chapter 2.45.1)
300
600
1200
2400
4800
9600
14400
19200
28800
38400
57600
115200
Note
Your current setting of AT+IPR will be preserved
• when you download new firmware (i.e. a firmware update does not restore the
factory setting);
• in the event of power failure.
Generally, AT+IPR=x should be used as a standalone command. If nevertheless
combinations with other commands on the same line cannot be avoided, there are
several constraints to be considered:
• Avoid combinations with the AT commands listed in Chapter 1.5.2.
MC35_ATC_01_V04.00 Page 39 of 238 02.04.2002
AT Command Set
• Take into account that a delay of 100 ms is required between a response to the
last command (e.g. OK) and the next command on the same line.
• When you enter AT+IPR=0, autobauding will be activated after the response to
the last command is received.
• When local echo is active (ATE1) and you enter AT+IPR=x with other com-
mands you may encounter the following problem: If switching to the new bit
rate takes effect while a response is being transmitted, the last bytes may be
sent at the new bit rate and thus, not properly transmitted. The following commands will be correctly sent at the new bit rate.
2.45.1 Autobauding
Autobauding allows the GSM engine to automatically detect the bitrate configured in the host application. The serial interface of the GSM engine supports autobauding for the following bitrates: 1200,
2400, 4800, 9600, 19200, 38400, 57600, 115200. Factory setting is autobauding enabled. This gives
you the flexibility to put the GSM engine into operation no matter what bitrate your host application is
configured to.
To take advantage of autobaud mode specific attention must be paid to the following requirements:
Synchronization between DTE and DCE
Ensure that DTE and DCE are correctly synchronized and the bitrate used by the DTE is detected by
the DCE (= ME). To allow the bitrate to be synchronized simply issue an "AT" or "at" string. This is
necessary
• after you have activated autobauding
• when you start up the GSM engine while autobauding is enabled. It is recommended to wait 3 to 5
seconds before sending the first AT character. Otherwise undefined characters might be returned.
If you want to use autobauding and autoanswer at the same time, you can easily enable the synchronization, when you activate autobauding first and then configure the autoanswer mode (ATS0=0).
Restrictions on autobauding operation
• The serial interface has to be operated at 8 data bits, no parity and 1 stop bit (factory setting).
• The A/ command (and a/) cannot be used.
• Only the strings “AT“ or “at“ can be detected (neither “aT“ nor “At“).
• The Unsolicited Result Codes "^SYSSTART", "^SYSSTART ALARM MODE" and "^SYSSTART
CHARGE-ONLY MODE" are not indicated when you start up the ME while autobauding is enabled.
This is due to the fact that the new bitrate is not detected unless DTE and DCE are correctly synchronized as described above.
• Any other Unsolicited Result Codes that may be issued before the ME detects the new bitrate (by
receiving the first AT command string) will be sent at the previous bitrate.
• It is not recommended to switch to autobauding from a bitrate that cannot be detected by the autobaud mechnism (e.g. 300 baud). Responses to +IPR=0 and any commands on the same line might
be corrupted.
• When entering several AT commands on the same line, consider the requirements described in the
Notes of Chapter 2.45.
• See also AT+ILRR Set TE-TA local rate reporting , pg. 37
Autobauding and multiplex mode
If autobauding is active you cannot switch to multiplex mode (see +CMUX, pg. 91). Vice versa, when
you run the multiplex mode, the write command AT+IPR=<rate> cannot be used.
MC35_ATC_01_V04.00 Page 40 of 238 02.04.2002
AT Command Set
3 AT Commands for FAX
The following commands can be used for FAX transmission.
If the ME is acting as a Fax-Modem to a PC-based application (e.g. “WinFax“) it is necessary to select
the proper Service Class (Fax Class) provided by the ME. The ME reports its Service Class capabilities, both the current setting and the range of services available. This is provided by the AT+FCLASS
command (see pg. 43).
Note: When sending a FAX with a standard FAX application for Personal Computers it is recommended to use autobauding (AT+IPR=0).
Currently defined Service Class values (see TIA/EIA-592-A)
ME +FCLASS parameter Service Class Reference, Standard
+
+
+
0 data modem
1 Service Class 1 EIA/TIA-578-A
1.0 Service Class 1 ITU-T T.31
2 manufacture specific this document and EIA PN-2388 (draft)
2.0 Service Class 2 TIA/EIA-592
2.1 Service Class 2 TIA/EIA-592-A or ITU-T T.32
8 Voice DCE TIA IS-101
Reserved
e.g. TIA/EIA-602 or ITU V.25ter
Note: Be aware that there is a difference between Service Classes 2 and 2.0! Only the first is applicable to the ME.
3.1 AT+FBADLIN Bad Line Threshold
Read command
AT+FBADLIN?
Write command
AT+FBADLIN=
<badlin>
This command defines the “Copy-Quality-OK”-threshold. If <badline> consecutive lines have pixel count errors in normal resolution (98 dpi) mode, then the
copy quality is unacceptable. If <badline> * 2 consecutive lines have pixel count
errors in fine resolution (196 dpi) mode, then the copy quality is unacceptable.
“Copy Quality Not OK” occurs if either the error percentage is too high or too
many consecutive lines contain errors. A value of 0 implies that error checking
is not present or disabled.
Response
<badlin> OK
Parameter
See write command
Response
OK
If error is related to ME functionality:
ERROR
Parameter
<badlin> 0 – 10 – 255 bad lines
Reference
EIA PN-2388
MC35_ATC_01_V04.00 Page 41 of 238 02.04.2002
Note
Used for Fax class 2 only
AT Command Set
3.2 AT+FBADMUL Error Threshold Multiplier
Read command
AT+FBADMUL?
Write command
AT+FBADMUL=
<n>
This command defines the “Copy-Quality-OK” multiplier. The number of lines
received with a bad pixel count is multiplied by this number. If the result exceeds the total number of lines on the page the error rate is considered too
high. A threshold multiplier value of 20 corresponds to a 5% error rate. A value
of 0 implies that error checking is not present or disabled.
Response
<badmul> OK
Parameter
See write command
Response
OK
If error is related to ME functionality:
ERROR
Parameter
<n> 0 – 20 – 255
Reference
EIA PN-2388
Note
Used for Faxclass 2 only
3.3 AT+FBOR Query data bit order
Test command
AT+FBOR=?
Read command
AT+FBOR?
Write command
AT+FBOR=<bor>
Query the bit order for receive-mode. The mode is set by the ME dependent on
the selected Service Class, see “AT+FCLASS Fax: Select, read or test service
class”, pg. 43.
Response
(list of supported bit order modes <bor>s)
OK
Parameter
See write command
Response
<bor> OK
Parameter
See write command
Response
OK
Parameter
<bor> 0 direct bit order for both Phase C and for Phase B/D data.
1 Reversed bit order for Phase C data, direct Bit Order for
Phase B/D data.
Reference
EIA PN-2388
MC35_ATC_01_V04.00 Page 42 of 238 02.04.2002
Note
Used for Fax class 2 only
AT Command Set
3.4 AT+FCIG Query or set the Local polling id
Test command
AT+FCIG =?
Read command
AT+FCIG?
Response
(max. length of Local Polling ID string) (range of supported ASCII character values) OK
Parameter
See write command
Response
<id> OK
Parameter
See write command
Write command
AT+FCIG =<id>
Response
OK
Parameter
<id> Local Polling ID string, max. length and possible content as reported
by test command. Default value is empty string (“”).
Reference
EIA PN-2388
Note
See also “AT+FLID Query or set the Local Id setting capabilities”, pg. 49.
Used for Faxclass 2 only
3.5 AT+FCLASS Fax: Select, read or test service class
Test command
AT+FCLASS=?
Read command
AT+FCLASS?
Write command
AT+FCLASS=
<n>
See introduction to fax commands, pg. 41.
Response
(list of supported <n>s)
OK
Parameter
See write command
Response
<n> OK
Parameter
See write command
The ME is set to a particular mode of operation (data, fax). This causes the MA
to process information in a manner suitable for that type of information.
Response
OK
Parameter
<n> 0 data (e.g. EIA/TIA-602 or ITU V.25ter)
1 Fax class 1 (EIA/TIA-578-A, Service Class 1)
2 Fax class 2 (EIA/TIA SP-2388, an early draft version of
EIA/TIA-592-A – Service class 2.1)
Reference
EIA/TIA-592-A
Note
Using Error Correcting Mode (ECM) when sending FAXes over GSM should be
avoided.
MC35_ATC_01_V04.00 Page 43 of 238 02.04.2002
AT Command Set
3.6 AT+FCQ Copy Quality Checking
Test command
AT+FCQ =?
This command controls Copy Quality checking when receiving a fax.
Response
(list of supported copy quality checking <cq>s)
OK
Parameter
See write command
Read command
AT+FCQ?
Response
<cq> OK
Parameter
See write command
Write command
AT+FCQ =<cq>
Response
OK
Parameter
<cq> 0 No copy quality checking. The ME will generate Copy Qual-
ity OK (MCF) responses to complete pages.
1 ME can check 1-D phase data. The connected application
must check copy quality for 2-D phase C data
Reference
EIA PN-2388
Note
Used for for Faxclass 2 only.
3.7 AT+FCR Capability to receive
Write command
AT+FCR=<cr>
Response
OK
Parameter
<cr> 0 ME will not receive message data. This can be used when
the application has insufficient storage. The ME can send
and can be polled for a file.
1 ME can receive message data.
Reference
EIA PN-2388
MC35_ATC_01_V04.00 Page 44 of 238 02.04.2002
Note
Used for Faxclass 2 only
AT Command Set
3.8 AT+FDCC Query or set capabilities
Test command
AT+FDCC =?
This command allows the connected application to sense and constrain the
capabilities of the facsimile DCE (=ME), from the choices defined in CCITT
T.30 Table 2.
Response
(list of <VR>s), (list of <BR>s), (list of <WD>s), (list of <LN>s), (list of <DF>s),
(list of <EC>s), (list of <BF>s), (list of <ST>s)
OK
Parameter
VR: Vertical Resolution, BR: Bit Rate, WD: Page Width, LN: Page Length, DF:
Data Compression Format, EC: Error Correction Mode, BF: Binary File
Transfer Mode, ST: Scan Time/Line.
Note: For further information see AT+FDIS, pg. 47
Read command
AT+FDCC?
Write command
AT+FDCC=<VR>,
<BR>,<WD>,<LN>,
<DF>,<EC>,<BF>,
<ST>
Reference
EIA PN-2388
Response
<dcc> OK
Parameter
See write command
Response
OK
Parameter
VR: Vertical Resolution, BR: Bit Rate, WD: Page Width, LN: Page Length, DF:
Data Compression Format, EC: Error Correction Mode, BF: Binary File
Transfer Mode, ST: Scan Time/Line.
Note: For further information see AT+FDIS, pg. 47
Note
Used for Faxclass 2 only
MC35_ATC_01_V04.00 Page 45 of 238 02.04.2002
AT Command Set
3.9 AT+FDFFC Data Compression Format Conversion
Test command
AT+FDFFC=?
This parameter determines the ME response to a mismatch between the data
format negotiated for the facsimile session, reported by the +FDCS:DF subparameter, and the Phase C data desired by the controlling application, indicated by the optional +FDT:DF subparameter, or the +FDIS=DF subparameter
for the +FDR operation.
Response
(list of supported <df>s) OK
Parameter
See write command
Read command
AT+FDFFC?
Write command
AT+FDFFC =<df>
Reference
EIA PN-2388
Response
<df> OK
Parameter
See write command
Response
OK
Parameter
<df> 0 Mismatch checking is always disabled. The controlling ap-
plication has to check the +FDCS: DF subparameter and
transfer matching data.
Note
Used for Fax Class 2 only
MC35_ATC_01_V04.00 Page 46 of 238 02.04.2002
AT Command Set
3.10 AT+FDIS Query or set session parameters
Test command
AT+FDIS =?
Read command
AT+FDIS?
Write command
AT+FDIS =
<VR>,<BR>,<WD>,
<LN>,<DF>,<EC>,
<BF>,<ST>
Reference
EIA PN-2388
This command allows the controlling application to sense and constrain the
capabilities used for the current session. It uses +FDIS to generate DIS or
DTC messages directly, and uses +FDIS and received DIS messages to generate DCS messages.
Response
(list of <VR>s), (list of <BR>s), (list of <WD>s), (list of <LN>s), (list of <DF>s),
(list of <EC>s), (list of <BF>s), (list of <ST>s)
Parameter
See write command
Response
<cdec> OK
Parameter
See write command
Response
OK
Parameter
Vertical Resolution VR 0 normal, 98 lpi
1 fine, 196 lpi
Bit Rate BR 0 2400 bit/s, V.27ter
1 4800 bit/s, V.27ter
2 7200 bit/s, V.29
3 9600 bit/s, V.29
Page Width WD 0 *) 1728 pixels in 215mm
1 2048 pixels in 255 mm
2 2432 pixels in 303 mm
3 1216 pixels in 151 mm
4 864 pixels in 107 mm
Page Length LN 0 A4, 297mm
1 B4, 364mm
2 unlimited length
Data Compression Format DF 0 *) 1-D modified Huffman
1 2-D modified read
2 2-D uncompressed mode
Error correction EC 0 *) disable ECM
(Annex A/T.30) 1 enable ECM, 64 bytes/frame
2 enable ECM, 256 bytes/frame
Binary File mode BF 0 *) disable BFT
Transfer Mode 1 enable BFT
Scan Time/Line ST 0 *) 0 ms (at VR= normal)
15 ms
2 10 ms
3 10 ms
4 20 ms
5 20 ms
6 40 ms
7 40 ms
*) Note: Only the default value needs to be implemented. Use test command
to check which parameter values are really possible!
Note
Used for Faxclass 2 only
MC35_ATC_01_V04.00 Page 47 of 238 02.04.2002
AT Command Set
3.11 AT+FDR Begin or continue phase C data reception
Execute command
AT+FDR
The +FDR command initiates transition to Phase C data reception.
Response
CONNECT
or
OK
If error is related to ME functionality:
ERROR
Reference
EIA PN-2388
Note
Used for Faxclass 2 only
3.12 AT+FDT Data Transmission
Execute command
AT+FDT
Write command
AT+FDT =<dt>
This command requests the ME to transmit a Phase C page. When the ME is
ready to accept Phase C data, it issues the negotiation responses and the
CONNECT result code to the application.
In Phase B, the +FDT command releases the ME to proceed with negotiation,
and releases the DCS message to the remote station. In Phase C, the +FDT
command resumes transmission after the end of a data stream transmited
before.
Response
CONNECT
Response
CONNECT
Parameter
<dt> DF,VR,BR,WD,LN comma separated parameter list
Data Compression Format DF 0 1-D modified Huffman
1 2-D modified read
2 2-D uncompressed mode
Vertical Resolution VR 0 normal, 98 lpi
1 fine, 196 lpi
Bit Rate BR 0 2400 bit/s, V.27ter
1 4800 bit/s, V.27ter
2 7200 bit/s, V.29
3 9600 bit/s, V.29
Page Width WD 0 1728 pixels in 215mm
1 2048 pixels in 255 mm
2 2432 pixels in 303 mm
3 1216 pixels in 151 mm
4 864 pixels in 107 mm
Page Length LN 0 A4, 297mm
1 B4, 364mm
2 unlimited length
Reference
EIA PN-2388
MC35_ATC_01_V04.00 Page 48 of 238 02.04.2002
Note
Used for Faxclass 2 only
AT Command Set
3.13 AT+FET End a page or document
Write command
AT+FET=<ppm>
Reference
EIA PN-2388
This command indicates that the current page or partial page is complete. An
ERROR response code results if this command is issued while the mode is onhook.
Response
OK
Parameter
<ppm> Post Page Message Codes
1 another document next
2 no more pages or documents
4 another page, procedure interrupt
5 another document, procedure interrupt
Note
Used for Faxclass 2 only
3.14 AT+FK Kill operation, orderly FAX abort
Execute command
AT+FK
Reference Note
This command causes the TA to terminate the session in an orderly manner.
Response
OK
Used for Faxclass 2 only
3.15 AT+FLID Query or set the Local Id setting capabilities
Test command
AT+FLID =?
Read command
AT+FLID?
Write command
AT+FLID =<lid>
Response
(max. character length of Local ID string) (range of supported ASCII character
values) OK
Parameter
See write command
Response
< lid > OK
Parameter
See write command
Response
OK
Parameter
<lid> Local ID string, max. length and possible content as reported by test
command. Default value is empty string (“”).
Reference
EIA PN-2388
Note
See also “AT+FCIG Query or set the Local polling id”, pg. 42.
Used for Faxclass 2 only
MC35_ATC_01_V04.00 Page 49 of 238 02.04.2002
AT Command Set
3.16 AT+FMDL identify Product Model
Read command
AT+FMDL?
Send the model identification to the TA
Response
Gipsy Soft Protocolstack
OK
Reference
Siemens
Note
Used for Faxclass 2 only
3.17 AT+FMFR Request Manufacturer Identification
Read command
AT+FMFR?
Reference
Siemens
Send the manufacturer identification to the TA
Response
SIEMENS
OK
Note
Used for Fax class 2 only
3.18 AT+FOPT Set bit order independently
Write command
AT+FOPT=<opt>
Reference
Siemens
Model specific command to set bit order independently of the understanding
which is "mirrored" and which is direct.
Response
OK
Parameter
<opt> 0 non-standard
1 standard
Note
Used for Fax class 2 only
MC35_ATC_01_V04.00 Page 50 of 238 02.04.2002
AT Command Set
3.19 AT+FPHCTO DTE Phase C Response Timeout
Read command
AT+FPHCTO?
Write command
AT+FPHCTO=
<tout>
Reference
EIA PN-2388
The time-out value <tout> determines how long the DCE will wait for a command
after reaching the end of data when transmitting in Phase C. When time-out is
reached, the DCE assumes that there are no more pages or documents to send.
Response
<tout> OK
Parameter
See write command
Parameter
<tout> 0 – 30 – 255 time-out value in 100ms units.
Response
OK
If error is related to ME functionality:
ERROR
Note
Used for Fax class 2 only
3.20 AT+FREV Identify Product Revision
Test command
AT+FREV?
Reference
Siemens
Sends the revision identification to the TA
Response
V2.550
OK
Note
Used for Fax class 2 only
3.21 AT+FRH Receive Data Using HDLC Framing
Execute command
AT+FRH=<mod>
Reference
TIA/EIA-578
This command causes the TA to receive frames using the HDLC protocol and the
modulation defined below. An ERROR response code results if this command is
issued while the modem is on-hook.
Response
CONNECT
If error is related to ME functionality:
ERROR
Parameter
<mod> modulation mode
3 V21 Ch2 300 bps
24 V.27ter 2400 bps
48 V.27ter 4800 bps
72 V.29 7200 bps
96 V.29 9600 bps
Note
Used for Fax class 1 only
MC35_ATC_01_V04.00 Page 51 of 238 02.04.2002
AT Command Set
3.22 AT+FRM Receive Data
Test command
AT+FRM=?
Write command
AT+FRM=<mod
>
Reference
TIA/EIA-578
Response
(List of supported modulation modes <mod>s) OK
Parameter
See write command
This command causes the TA to enter the receiver-mode using the modulation
defined below. An ERROR response code results if this command is issued while
the modem is on-hook.
Response
CONNECT
If error is related to ME functionality:
ERROR
Parameter
<mod> 96 V.29 9600 bps
72 V.29 7200 bps
48 V.27ter 4800 bps
24 V.27ter 2400 bps
Note
Used for Faxclass 1 only
3.23 AT+FRS Receive Silence
Write command
AT+FRS=<time>
Reference
TIA/EIA-578
+FRS=n causes the TA to report an OK result code to the TE after <time> 10 millisecond intervals of silence have been detected on the line. This command is
aborted if any character is received by the DTE. The modem discards the aborting character and issues an OK result code. An ERROR response code results if
this command is issued while the mode is on-hook.
Response
OK
If error is related to ME functionality:
ERROR
Parameter
<time> 0 – 255 no. of 10 millisecond intervals
Note
Used for Faxclass 1 only
3.24 AT+FTH Transmit Data Using HDLC Framing
Write command
AT+FTH=<mod>
Reference
TIA/EIA-578
This command causes the TA to transmit data using HDLC protocol and the
modulation mode defined below. An ERROR response code results if this command is issued while the modem is on-hook.
Response
CONNECT
Parameter
<mod> 3 V.21 Ch2 300 bps
Note
Used for Faxclass 1 only
MC35_ATC_01_V04.00 Page 52 of 238 02.04.2002
AT Command Set
3.25 AT+FTM Transmit Data
Test command
AT+FTM=?
Response
(List of supported modulation modes) OK
Parameter
See write command
Write command
AT+FTM=<mod>
This command causes the TA to transmit data using the modulation mode defined below. An ERROR response code results if this command is issued while
the modem is on-hook.
Response
CONNECT
If error is related to ME functionality:
ERROR
Parameter
<mod> modulation mode
96 V.29 9600 bps
72 V.29 7200 bps
48 V.27ter 4800 bps
24 V.27ter 2400 bps
Reference
TIA/EIA-578
Note
Used for Fax class 1 only
3.26 AT+FTS Stop Transmission and Wait
Write command
AT+FTS=<time>
This command causes the TA to terminate a transmission and wait for <time> 10
millisecond intervals before responding with the OK result code to the DTE.
Response
An ERROR response code results if this command is issued while the modem is
on-hook.
Parameter
<time> 0 – 85 no. of 10 millisecond intervals
Reference
TIA/EIA-578
MC35_ATC_01_V04.00 Page 53 of 238 02.04.2002
Note
Used for Fax class 1 only
AT Command Set
3.27 AT+FVRFC Vertical resolution format conversion
Test command
AT+FVRFC =?
This command determines the DCE response to a mismatch between the vertical
resolution negotiated for the facsimile session and the Phase C data desired by
the DTE.
Response
(List of supported mismatch checking modes) OK
Parameter
See write command
Read command
AT+FVRFC?
Response
<vrfc> OK
Parameter
See write command
Write command
AT+FVRFC
=<vrfc>
Response
OK
Parameter
<vrfc> 0 disable mismatch checking.
2 enable mismatch checking, with resolution conversion of 1-D
data in the DCE, and an implied AT+FK command executed
on 2-D mismatch detection
Reference
EIA PN-2388
Note
Used for Fax class 2 only
The following AT commands are dummy commands. Invoking these commands will not cause ERROR result codes, but these commands have no functionality.
AT+FAA Auto Answer mode
AT+FECM Error Correction Mode control
AT+FLNFC Page Length format conversion
AT+FLPL Indicate document available for polling
AT+FMINSP Minimum Phase C speed
AT+FRBC Phase C data receive byte count
AT+FREL Phase C received EOL alignment
AT+FSPL Enable polling
AT+FTBC Phase C data transmit byte count
AT+FWDFC Page width format conversion
MC35_ATC_01_V04.00 Page 54 of 238 02.04.2002
AT Command Set
4 AT Commands originating from GSM 07.07
These AT Commands are according to ETSI (European Telecommunications Standards Institute)
GSM 07.07 document.
4.1 AT+CACM Accumulated call meter (ACM) reset or query
Test command
AT+CACM=?
Response
OK
Parameter
Read command
AT+CACM?
Write command
AT+CACM=
[<passwd>]
Response
TA returns the current ACM value.
+CACM: <acm> OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<acm> string type; three bytes of the current ACM value in hexadecimal for-
mat (e.g. “00001E” indicates decimal value 30) 000000 – FFFFFF
Parameter
<passwd> string type:
SIM PIN2
Response
TA resets the Advice of Charge related to the accumulated call meter (ACM)
value in SIM file EF(ACM). ACM contains the total number of home units both
for the current and preceding calls.
OK
If error is related to ME functionality:
+CME ERROR: <err>
Reference
GSM 07.07
MC35_ATC_01_V04.00 Page 55 of 238 02.04.2002
AT Command Set
4.2 AT+CALA Set alarm time
Test command
AT+CALA=?
Read command
AT+CALA?
Write command
AT+CALA=<time>
[,<n>[,<type>[,<te
xt>]]]
Test command returns supported array index values <n>, alarm types <type>,
and maximum length of the text <tlength> to be output.
Response
+CALA: (list of supported <n>s), (list of supported <type>s), (range of supported <tlength>) OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
See write command
Read command returns the list of current active alarm settings in the ME.
Response
+CALA: <time>[,<n>[,<type>[,<text>]]]
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
See write command
The write command sets an alarm time in the ME. When the alarm is timed out
and executed the ME returns an Unsolicited Result Code (URC). The alarm call
can adopt two functions, depending on whether or not you switch the GSM engine off after setting the alarm:
Reminder call: You can use the alarm function as a wake-up or reminder call.
For this purpose, set the alarm as described below and do not
switch off or power down the ME. When executed the call
comes as an Unsolicited Result Code.
Applies to MC35 and MC35 Terminal.
Alarm mode: You can use the alarm call to restart the ME when powered
down. For this purpose, set the alarm as described below. Then
power down the ME by entering the AT^SMSO command (pg.
191). When the alarm time is reached, the ME will wake up to
Alarm mode. To prevent the ME from unintentionally logging
into the GSM network, Alarm mode provides restricted operation. Upon wake-up, the ME indicates an Unsolicited Result
Code which reads: ^SYSSTART ALARM MODE. A limited
number of AT commands is available during Alarm mode:
AT+CCLK, AT+CALA, AT^SBC, AT^SCTM, AT^SMSO.
The ME remains deregistered from the GSM network. If you
want the ME to return to full operation (normal operating mode)
it is necessary to drive the ignition line (IGT pin of ZIF interface)
to ground. If your application is battery powered note that
charging cannot be started while ME is in Alarm mode. For details please refer to the "Hardware Interface Description" supplied with your GSM engine.
Applies to MC35 module only. MC35 Terminal does not support
the Alarm mode.
Response
OK
If setting fails:
+CME ERROR: <err> Refer to Chapter 9.1.1, pg. 214, for <err> values.
MC35_ATC_01_V04.00 Page 56 of 238 02.04.2002
AT Command Set
Parameter
<time> string type value; format is "yy/MM/dd,hh:mm:ss", where characters
indicate year (two last digits), month, day, hour, minutes. E.g. 6th of
May 2001, 22:10:00 hours equals to “01/05/06,22:10:00" (see also
+CCLK). Note: if <time> equals current date and time or is to an earlier date, TA returns +CME ERROR: <21>.
<n> integer type value indicating the array index of the alarm. Index starts
with 0. If only this value is returned by the test command, it is default
and indicates that only one alarm time is possible; however, if a second alarm time is set, the previous alarm is deleted.
<type> integer type value indicating the type of the alarm
0 Alarm indication: text message via serial interface
<text> string type value indicating the text to be displayed when alarm time
is reached; maximum length is <tlength>. After first connection to
power supply <text> is undefined.
Note: <text> will be stored to the non-volatile flash memory when the
device enters the Power Down mode via AT^SMSO (pg. 191). Once
saved, it will be available upon next power-up, until you overwrite it by
typing another text. This eliminates the need to enter the full string
when setting a fresh alarm and thus, saves memory due to the limited
number of flash memory write cycles (e.g. 100.000).
Unsolicited result code
Reference
GSM 07.07
<tlength> integer type value indicating the maximum length of <text>. The
maximum length is 16.
Indicates reminder call:
+CALA: <text>
Indicates ME wake-up into Alarm mode:
^SSYSTART ALARM MODE
+CALA: <text>
If autobauding is active (AT+IPR=0) the URCs ^SSYSTART ALARM MODE
and +CALA: <text> do not appear. Therefore, avoid using Alarm mode in conjunction with autobauding.
Note
• <text> should not contain characters which are coded differently in ASCII
and GSM (e.g. Ä, Ö, Ü), see also Chapter 9.5.
• In the event of power outage the GSM engine retains the current alarm setting, but the RTC will be reset to <time> = “00/01/01,00:00:00” and must be
restored after resume of power (see also AT+CCLK, pg. 65. It is only in
Power Down mode, that the RTC is kept powered from a dedicated voltage
regulator, thus saving the current date and time.
• When the GSM engine wakes up to Alarm mode, the system takes 1s to reinitialize the RTC and to update the current time. Therefore, it is recommended to wait 1s before using the AT+CCLK command (for example 1s
after ^SSYSTART has been output).
• Please consider when using multiplex mode (+CMUX, pg. 91):
- It is possible to use +CALA with every logical channel (1 – 3).
- The total no. of possible alarm events is shared by all channels. If <n> =
0 is returned by the test command, this indicates that only one common
alarm time is possible for all logical channels.
MC35_ATC_01_V04.00 Page 57 of 238 02.04.2002
AT Command Set
- For every channel a different <text> parameter can be stored.
- <text> will be output on the same logical channel the alarm was entered.
If not in multiplex mode, <text> will be output independent of the related
channel.
- The read command returns all pending alarms, independent on which
logical channel an alarm was entered. It´s up to the user to identify these
alarms by specific <text>s.
Examples
Example 1:
You may want to configure a reminder call for May 31, 2001, at 9.30h, including
the message "Good Morning".
Write command:
AT+CALA="01/05/31,09:30:00",0,0,"Good Morning"
OK
Do not switch off the GSM engine. When the alarm is executed the ME returns
the following URC:
+CALA: Good Morning
Example 2:
To set a fresh alarm using the same message as in Example 1, simply enter
date and time. <n>, <type>, <text>, <tlength> can be omitted:
AT+CALA="01/05/31,08:50:00"
OK
When the alarm is executed the URC comes with the same message:
+CALA: Good Morning
Example 3:
To configure the alarm mode, e.g. for May 20, 2001, at 8.30h, enter
AT+CALA="01/05/20,08:30:00"
OK
Next, power down the ME:
AT^SMSO
^SMSO: MS OFF
When the alarm is executed the ME wakes up to Alarm mode and displays a
URC. If available, this line is followed by the individual <text> most recently
saved. If no individual message was saved only the first line appears.
^SYSSTART ALARM MODE
+CALA: Good Morning
Table 5: Summary of AT commands available in Alarm mode
AT command Use
AT+CALA Set alarm time
AT+CCLK Set date and time of RTC
AT^SBC In Alarm mode, you can only query the present current consumption and check
whether or not a charger is connected. The battery capacity is returned as 0, regardless of the actual voltage (since the values measured directly on the cell are
not delivered to the module).
AT^SCTM Query temperature of GSM engine
AT^SMSO Power down GSM engine
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AT Command Set
4.3 AT+CAMM Accumulated call meter maximum (ACMmax) set or query
Test command
AT+CAMM=?
Response
OK
Parameter
Read command
AT+CAMM?
Write command
AT+CAMM=
[<acmax>[,<passwd>]]
Response
TA returns the current ACMmax value.
+CAMM: <acmmax> OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
See write command
Response
TA sets the Advice of Charge related to the accumulated call meter maximum value in SIM file EF (ACMmax). ACMmax contains the maximum
number of home units allowed to be consumed by the subscriber.
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<acmmax> string type; three bytes of the max. ACM value in hexadeci-
mal format (e.g. “00001E” indicates decimal value 30) 000000
disable ACMmax feature 000001-FFFFFF
<passwd> string type
SIM PIN2
Reference
GSM 07.07
Note
MC35_ATC_01_V04.00 Page 59 of 238 02.04.2002
AT Command Set
4.4 AT+CAOC Advice of Charge information
Test command
AT+CAOC=?
Response
+CAOC: (list of supported <mode>s) OK
Parameter
See write command
Read command
AT+CAOC?
Write command
AT+CAOC=<mode>
Execute command
AT+CAOC
Response
+CAOC: <mode> OK
Parameter
See write command
Response
TA sets the Advice of Charge supplementary service function mode.
If error is related to ME functionality:
+CME ERROR: <err>
If <mode>=0, TA returns the current call meter value
OK
Parameter
<mode> 0 query CCM value
<ccm> string type; three bytes of the current CCM value in hexadecimal
format (e.g. “00001E” indicates decimal value 30); bytes are similarly coded as ACMmax value in the SIM 000000-FFFFFF
Response
TA returns the current call meter value
If error is related to ME functionality:
+CME ERROR: <err>
If <mode>=0, TA returns the current call meter value
+CAOC: <ccm> OK
Parameter
See write command
Reference
Note
GSM 07.07
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AT Command Set
4.5 AT+CBST Select bearer service type
Test command
AT+CBST=?
Response
+CBST: (list of supported <speed>s),(list of supported <name>s),(list of supported <ce>s) OK
Parameter
See write command
Read command
AT+CBST?
Write command
AT+CBST=
<speed>[,<name>
[,<ce>]]
Response
+CBST: <speed>,<name>,<ce>
OK
Parameter
See write command
Response
TA selects the bearer service <name>, the data rate <speed> and the connection element <ce> to be used when data calls are originated. The settings also
apply to mobile terminated data calls, especially when single numbering
scheme calls or calls from analog devices are received (see also Chapter
4.45).
OK
Parameter
<speed> 0 auto bauding
4 2400 bps( V.22bis)
6 4800 bps( V.32)
7 9600 bps(V.32)
14 14400 bps (V.34)
68 2400 bps (V.110)
70 4800 bps (V.110)
71 9600 bps (V.110)
75 14400 bps (V.110)
<name> 0 asynchronous modem
<ce> 1 non-transparent
Transparent mode is not supported.
Reference
GSM 07.07
Note
• GSM 02.02[1]: List of allowed combinations of subparameters.
• The PLMN influences the second air interface (to the terminator), therefore
another mode may be established by the network.
MC35_ATC_01_V04.00 Page 61 of 238 02.04.2002
AT Command Set
4.6 AT+CCFC Call forwarding number and conditions control
Test command
AT+CCFC=?
Response
+CCFC: (list/range of supported <reas>s) OK
Parameter
See execute command
Write command
AT+CCFC=<reas>,
<mode>[,<number>
[,<type>[,<class>
[,<time>]]]]
Response
TA controls the call forwarding supplementary service. Registration, erasure,
activation, deactivation and status query are supported.
If <mode> ≠ 2 and command successful:
OK
If <mode> = 2, <reas> ≠ 2 and command successful:
+CCFC: <status>, <class1>[, <number>, <type>]
[<CR><LF>+CCFC: ....] OK
If <mode> = 2, <reas> = 2 and command successful:
+CCFC: <status>, <class1>[, <number>, <type> [, <time>]]
[<CR><LF>+CCFC: ....] OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<reas> 0 unconditional
1 mobile busy
2 no reply
3 not reachable
4 all call forwarding (includes reasons 0, 1, 2 and 3)
5 all conditional call forwarding (includes reasons 1, 2 and 3)
<mode> 0 disable call forwarding
1 enable call forwarding
2 query status of call forwarding
3 register <number> and activate call forwarding
4erase <number> and deactivate call forwarding
<number> string type phone number of forwarding address in format speci-
fied by <type>.
If you select <mode> = 3, the phone <number> will be registered
in the network. This allows you to disable / enable CF to the
same destination without the need to enter the phone number
once again. Depending on the services offered by the provider
the registration may be mandatory before CF can be used. The
number remains registered in the network until you register another number or erase it using <mode> = 4.
<type> type of address in integer format; default 145 when dialling string in-
cludes international access code character “+”, otherwise 129
MC35_ATC_01_V04.00 Page 62 of 238 02.04.2002
AT Command Set
<class> integer or sum of integers each representing a <class> of informa-
tion:
1voice
2 data
4fax
8 short message service
16 data circuit sync
32 data circuit async
64 dedicated packet access
128 dedicated PAD access
x combination of some of the above classes.
For example, the default setting 7 represents the sum of
the integers 1, 2 and 4 (CF for voice, data and fax). The
value 255 covers all classes. If the <class> parameter is
omitted, the default value 7 is used.
<time> time to wait before call is forwarded, rounded to a multiple of 5 sec..
1...20..30 (only for <reas>=no reply)
<status> 0 not active
1active
Reference
GSM 07.07,
GSM 02.04,
GSM 02.82
Note
• Please note that you can register, disable, enable and erase <reas>
4 and 5 as described above. However, it is not possible to query the status
of <reas> 4 and 5 with AT+CCFC. Instead, you may use the the ATD
command followed by *'# codes to check the status of these two reasons.
See Chapter 9.4 for a complete list of *# GSM codes. See also examples
below.
• The AT+CCFC command offers a broad range of call forwarding options
according to the GSM specifications. However, when you attempt to set a
call forwarding option which is not provisioned or not yet subscribed to, the
setting will not take effect regardless of the response returned. The responses in these cases vary with the network (for example “OK”, “Operation not allowed”, “Operation not supported” etc.). To make sure check the
the call forwarding status with <mode>=2.
4.6.1 Examples: Call forwarding
Please note that when you configure or query call forwarding without specifying any classes, the settings will refer to classes 1, 2 and 4 only (=default). The handling of classes is equivalent to AT+CLCK
(Chapter 4.21.3).
Example 1
To register the destination number for unconditional call forwarding (CFU):
at+ccfc=0,3,"+493012345678",145
OK
Remember that call forwarding will be activated for voice, data and fax (default classes) when you register the destination number.
Example 2
To query the status of CFU without specifying <class>:
at+ccfc=0,2
+CCFC: 1,1,"+493012345678",145
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AT Command Set
+CCFC: 1,2,"+493012345678",145
+CCFC: 1,4,"+493012345678",145
OK
Example 3
Example 4
To deactivate CFU without specifying <class>:
at+ccfc=0,0
OK
To check whether CFU was successfully deactivated (note that the destination number remains registered in the network when you disable CFU):
at+ccfc=0,2
+CCFC: 0,1,"+493012345678",145
+CCFC: 0,2,"+493012345678",145
+CCFC: 0,4,"+493012345678",145
OK
To erase the registered CFU destination number:
at+ccfc=0,4
OK
Now, when you check the status, no destination number will be indicated:
at+ccfc=0,2
+CCFC: 0,1
+CCFC: 0,2
+CCFC: 0,4
Example 5
Example 6
To query the status of CFU for all classes:
at+ccfc=0,2,,,255
+CCFC: 0,1
+CCFC: 0,2
+CCFC: 0,4
+CCFC: 0,8
+CCFC: 0,16
+CCFC: 0,32
+CCFC: 0,64
+CCFC: 0,128
OK
<reas>=4 or 5 cannot be used to query the status of all call forwarding reasons (see also notes above):
at+ccfc=4,2
+CME error: operation not supported
at+ccfc=5,2
+CME error: operation not supported
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AT Command Set
4.7 AT+CCLK Real Time Clock
Test command
AT+CCLK=?
Response
OK
Read command
AT+CCLK?
Write command
AT+CCLK=<time>
Reference
GSM 07.07
Response
+CCLK: <time>
OK/ERROR/+CME ERROR
Parameter:
<time>: string type value; format is "yy/MM/dd,hh:mm:ss", where characters
indicate year (two last digits), month, day, hour, minutes, seconds;
e.g. 6th of May 2001, 22:10:00 hours equals to “01/05/06,22:10:00"
Response
OK/ERROR/+CME ERROR
Parameter:
<time> see read command
Note
• <time> is retained if the device enters the Power Down mode via
AT^SMSO (pg. 192).
• <time> is lost if power is totally disconnected and if no separate battery
back-up for the clock is provided via the ZIF cable. In this case, the clock
starts with <time> = “00/01/01,00:00:00” upon next power-up.
• See AT+CALA, pg. 56.
• When the GSM engine wakes up to Alarm mode, the system takes 1s to
re-initialize the RTC and to update the current time. Therefore, it is recommended to wait 1s before using the AT+CCLK command (for example
1s after ^SSYSTART has been output).
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AT Command Set
4.8 AT+CCUG: Closed User Group
Test command
AT+CCUG=?
The Test command returns the supported parameters.
Response
+CCUG: (list of supported <n>s),(list of supported <index>),(list of supported
<info>) OK
Read command
AT+CCUG?
Write command
AT+CCUG=
[,<n>[,<index>[,<in
fo>]]
Explicit CUG invocation means that at each call setup, CUG information is
added to the called number.
The Read command returns if the Explicit CUG invocation is activated, which
CUG index is chosen, and if Preferential Group or Outgoing Access is suppressed.
Response
+CCUG: <n>, <index>,<info> OK
The write command serves to activate or deactivate the explicit CUG invocation, to set the desired index, and to specify if Preferential Group or Outgoing
Access shall be suppressed.
Parameter
<n> 0 Deactivate explicit CUG invocation
1 Activate explicit CUG invocation
<index> 0...9 CUG index
10 No index (preferred CUG taken from subscriber data)
<info> 0 No information
1 Suppress Outgoing Access
2 Suppress preferential CUG
3 Suppress preferential CUG and Outgoing Access.
Response
OK/ERROR/+CME ERROR
Reference
Note
GSM 02.85
Siemens
MC35_ATC_01_V04.00 Page 66 of 238 02.04.2002
AT Command Set
4.9 AT+CCWA Call waiting
Test command
AT+CCWA=?
Read command
AT+CCWA?
Write command
AT+CCWA=
[<n>,
[<mode>
[,<class>]]]
Response
+CCWA: (list of supported <n>s)
OK/ERROR/+CME ERROR
Parameter
See write command
Response
+CCWA: <n>
OK/ERROR/+CME ERROR
Parameter
See write command
This command controls the Call Waiting supplementary service according to GSM
02.83. Activation, deactivation and status query are supported.
Response
+CCWA: <n>, <mode>,<class>,,<CLI validity>
OK/ERROR/+CME ERROR
Reference
GSM 07.07
Response
If <mode>=2 and command is successful
+CCWA: <status>, <class1><CR><LF>
+CCWA: <status>, <class2><CR><LF>...
OK/ERROR/+CME ERROR
Parameter
<n> sets/shows the result code presentation status in the TA
0 disable
1 enable
<mode> (when <mode> is not given, network is not interrogated)
0 disable
1 enable
2 query status
<class> sum of integers each representing a class of information (default 7)
1voice
2 data
4fax
7 voice, data and fax (1+2+4)
8SMS
16 data circuit sync
32 data circuit async
64 dedicated packet access
128 dedicated PAD access
<number> string type phone number of calling address in format specified by
<type>
<type> type of address octet in integer format (refer to GSM 04.08 sub-
clause 10.5.4.7)
<CLI validity> 0CLI valid
1 CLI has been withheld
2 CLI is not available
<status> 0 not active
1active
Parameter <n> is used to disable/enable the presentation of the URC
+CCWA: <number>,<type>,<class>,,<CLI validity>
to the TE when call waiting service is enabled.
MC35_ATC_01_V04.00 Page 67 of 238 02.04.2002
AT Command Set
4.10 AT+CEER Extended error report
Test command
AT+CEER=?
Response
OK
Execute command
AT+CEER
Reference
GSM 07.07
TA returns an extended error report of the reason for the last call release and
location.
Response
+CEER: <location ID>, <reason > , <ss_release>OK
Parameter
<location ID> Location ID as number code (see subclause 9.1.6)
<reason> Reason for last call release as number code (see subclause
9.1.6)
<ss_release> Release cause for last Supplementary Service Call
(see subclause 9.1.14)
Note
• AT+CEER is not available for data calls, please use ATS18=1.
• Default output in the case of a no-error-situation is +CEER: 0,0,0.
MC35_ATC_01_V04.00 Page 68 of 238 02.04.2002
AT Command Set
4.11 AT+CFUN Set phone functionality
The AT+CFUN command serves to query or set the level of functionality <fun> of the ME. You can
reset the ME or enable power saving.
Full functionality
<fun>=1 Full functionality is where high current is drawn, depending on the power level and
the operating mode, e.g. IDLE, TALK, DATA, IDLE GPRS or DATA GPRS mode.
SLEEP mode and wake-ups
Intended for power saving, SLEEP mode reduces the functionality of the ME to a minimum and,
thus, minimizes the current consumption to the lowest level. SLEEP mode can be selected in the
three levels <fun>=0, 5 or 6:
<fun>=0: If <fun>=0 has been selected, the serial interface is blocked. The ME shortly wakes
up to listen to a paging message block sent from the base station and immediately
returns to the power saving mode.
The first wake-up event fully activates the ME, enables the serial interface and terminates power saving. Level 0 is called NON-CYCLIC SLEEP mode.
<fun>=5 or 6: These two options are referred to as CYCLIC SLEEP modes. The major benefit over
the NON-CYCLIC SLEEP mode is that the serial interface is not permanently
blocked and that packet switched calls may go on without terminating the power
saving mode. This allows you to take advantage of power saving, for example, while
the ME remains attached to the GPRS and even performs a GPRS data transfer.
The CYCLIC SLEEP mode is a dynamic process which alternatingly enables and
disables the serial interface. The application must be configured to use hardware
flow control. By setting/resetting the CTS signal, the module indicates to the application when the UART is active. The application must wait until CTS is set (i.e. is active low) on the physical UART before data can be sent to the module.
The module starts or resumes power saving two seconds (AT+CFUN=5) or ten minutes (AT+CFUN=6) after the last sent or received character. The module resets the
CTS signal, and after additional 5ms it physically deactivates the UART to save
power.
Wake-up procedures are the same as in the NON-CYCLIC SLEEP mode. The first
wake-up event fully activates the module, enables the serial interface and terminates
power saving. As an additional option, you can set AT+CFUN=1 to wake up the
module.
Wake-ups: While the SLEEP mode is in effect, there are number of ways to wake up the ME:
incoming call (RING), incoming SMS, RTC alarm, receipt of an unsolicited result
code (URC). See Chapter 9.1.4 for a summary of URCs.
During the NON-CYCLIC SLEEP mode (<fun=0>), a falling edge of the RTS line
also wakes up the GSM engine. In the CYCLIC SLEEP modes (<fun>=5 or 6), the
RTS signal is only used for handshake and does not wake up the ME
IMPORTANT: The SLEEP modes <fun>=0, 5 and 6 can be selected no matter whether or not PIN
authentication has been done. Nevertheless, please keep in mind that power saving works only
while the module is registered to the GSM network. If you attempt to activate power saving while the
module is detached, the selected <fun> option will be set, though power saving does not take effect.
Furthermore, in order to accept incoming calls, SMS or network related URCs in SLEEP mode the
ME must be registered when it enters the SLEEP mode.
To check that power saving is on, it is recommended to measure the supply current. If available, you
can take advantage of the status LED controlled by the SYNC pin (see Chapter 8.37 and [1]. The
LED stops flashing once the module starts power saving.
For detailed information on the various operating modes, current consumption, the timing of the CTS
signal and a summary of wake-up events from SLEEP mode, please refer to [1].
MC35_ATC_01_V04.00 Page 69 of 238 02.04.2002
AT Command Set
Test command
AT+CFUN=?
Read command
AT+CFUN?
Write command
AT+CFUN=[<fun>
[,<rst>]]
Response
+CFUN: (list of supported <fun>s), (list of supported <rst>s)
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
See below
Response
+CFUN: <fun>
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
See below
The write command can be used to reset the ME, to choose one of the SLEEP
mode levels or to return to full functionality. For <fun>=5 or 6 the application
must be configured to use hardware flow control. This is necessary for the CTS
signal level to be transparently transmitted to the TE.
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<fun> 0 NON-CYCLIC SLEEP mode:
AT+CFUN=0 disconnects immediately any circuit or packet
switched call in progress. The ME goes into power saving
mode. While the NON-CYCLIC SLEEP mode is on, the AT
interface is not accessible. Consequently, once you have
set <fun> level 0, do not send further characters. Otherwise
these characters remain in the input buffer and may delay
the output of an unsolicited result code.
The first wake-up event stops power saving. The ME is
caused to return to full functionality and to stay fully operational.
1 Full functionality:
ME operates in IDLE, TALK, DATA, IDLE GPRS or DATA
GPRS mode.
If the ME is in one of the two CYCLIC SLEEP modes you
can issue AT+CFUN=1 to stop power saving and go back to
full functionality. Keep in mind that, unlike the reset
command described below, this action does not restart the
ME but only changes the level of functionality. See
parameter <rst> for details on the reset.
5 CYCLIC SLEEP mode:
AT+CFUN=5 disconnects any circuit-switched call in progress, but has no effect on a GPRS call. The ME goes into
the power saving mode 2 seconds after the last character
was transmitted over the serial interface. Sending characters over the serial interface resets the timer.
The first wake-up event stops power saving. Also, you can
enter AT+CFUN=1 to terminate power saving.
MC35_ATC_01_V04.00 Page 70 of 238 02.04.2002
AT Command Set
6 CYCLIC SLEEP mode:
AT+CFUN=6 disconnects any circuit-switched call in progress, but has no effect on a GPRS call. The ME goes into
the power saving mode 10 minutes after the last character
was transmitted over the serial interface. Sending characters over the serial interface resets the timer.
The first wake-up event stops power saving. Also, you can
enter AT+CFUN=1 to terminate power saving.
<rst> 0 The <rst> parameter can only be used if +CFUN=1, 5 or 6.
Due to the command syntax, you need to enter <fun>,
followed by <rst>, where <fun> is only a placeholder and
has no effect. See examples below.
1 ME resets and restarts to full functionality.
After reset and restart, PIN 1 authentication is necessary.
Therefore, you are required to use AT+CPIN again. If
autobauding is enabled it is recommended to wait 3 to 5
seconds before entering the first AT command. For details
on autobauding refer to Chapter 2.45.1
Reference
GSM 07.07
Example 1
Example 2
Note
• In multiplex mode, the CFUN profile is shared by all multiplexer channels.
When you change the CFUN state on one logical channel, all other logical
channels adopt the same state.
To check the level of functionality use the read command:
AT+CFUN?
+CFUN: 1 Default mode after ME was restarted.
Remember that the AT interface is not accessible in NON-CYCLIC SLEEP
mode. Consequently, the read command is only useful when the ME is set to
full functionality or, when <fun> is set to 5or 6.
AT+CFUN?
+CFUN: 5 CYCLIC SLEEP mode.
To set the ME to NON-CYCLIC SLEEP mode enter
AT+CFUN=0
OK
When, for example, an SMS is being received and indicated by an unsolicited
result code (URC), the ME wakes up to full operation.
+CMTI: "SM",5 Note that the URC used in this example will appear
only if CMTI=1,1 was configured before. See Chapters
5.10 and 9.1.4.
After this, you may want to verify the operating status:
AT+CFUN?
+CFUN: 1 Indicates that ME has entered full functionality mode.
Example 3
To enable CYCLIC SLEEP mode, level 6:
AT+CFUN=6
OK
MC35_ATC_01_V04.00 Page 71 of 238 02.04.2002
AT Command Set
Power saving begins 10 minutes after the last character was sent or received
over the serial interface.
Example 4
Example 5
To stop CYCLIC SLEEP mode and return to full functionality:
AT+CFUN?
+CFUN: 5
OK
AT+CFUN=1
OK
Remember that this approach is not applicable to the NON-CYCLIC SLEEP
mode (since the serial interface is disabled). The NON-CYCLIC SLEEP mode
ends with the first wake-up event.
To reset and restart the ME:
AT+CFUN=1,1 or alternatively, AT+CFUN=0,1 or 5,1 or 6,1
OK
^SSYSTART The ^SSYSTART URC confirms that the ME has been
rebooted.
Note that ^SSYSTART appears only if AT+IPR≠≠≠≠0. If the
ME is in autobaud mode, it is recommended to wait 3 to
5 seconds before entering the first AT command.
After the GSM engine was reset and restarted you are required to enter PIN 1:
AT+CPIN
+CPIN: SIM PIN
OK
MC35_ATC_01_V04.00 Page 72 of 238 02.04.2002
AT Command Set
4.12 AT+CGMI Request manufacturer identification
Test command
AT+CGMI=?
Response
OK
Execute command
AT+CGMI
Response
TA returns manufacturer identification text.
SIEMENS
OK
Reference
GSM 07.07
Note
See also ”AT+GMI Request manufacturer identification”.
4.13 AT+CGMM Request model identification
Test command
AT+CGMM=?
Execute command
AT+CGMM
Reference
GSM 07.07
Response
OK
Response
TA returns product model identification text.
MC35
OK
Note
See also ”AT+GMM Request TA model identification”.
4.14 AT+CGMR Request revision identification of software status
Test command
AT+CGMR=?
Execute command
AT+CGMR
Reference
GSM 07.07
Response
OK
Response
TA returns product firmware version identification text.
REVISION xx.yy
OK
xx.yy Version xx and variant yy of software release
Note
See also AT+GMR Request TA revision identification of software status
MC35_ATC_01_V04.00 Page 73 of 238 02.04.2002
AT Command Set
4.15 AT+CGSN Request product serial number identification (IMEI) identical
to GSN
Test command
AT+CGSN=?
Execute command
AT+CGSN
Response
OK
Response
TA returns identification text for determination of the individual ME.
<sn> OK
Parameter
<sn> IMEI of the telephone (International Mobile station Equipment Identity)
Reference
GSM 07.07
Note
See also ”AT+GSN Request TA serial number identification”.
4.16 AT+CHLD Call hold and multiparty
Test command
AT+CHLD=?
Execute command
AT+CHLD=[<n>]
Response
+CHLD: (list of supported <n>s)
OK
Response
TA controls the supplementary services Call Hold, MultiParty and Explicit Call
Transfer. Calls can be put on hold, recovered, released, added to conversation
and transferred.
Note: Supplementary services are only applicable to teleservice 11 (Speech tele-
phony).
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<n> 0 Terminate all held calls; or set UDUB (User Determined User
Busy) for a waiting call, i.e. reject the waiting call.
1 Terminate all active calls (if any) and accept the other call
(waiting call or held call)
1X Terminate the active call X (X= 1-7)
2 Place all active calls on hold (if any) and accept the other call
(waiting call or held call) as the active call
2X Place all active calls except call X (X= 1-7) on hold
3 Add the held call to the active calls
Reference
GSM 07.07
Note
• In conflicting situations, e.g. when a waiting call comes while there are already
held calls, the above procedures apply to the waiting call only. For example,
<n>=0 rejects the waiting call, but does not affect the held calls.
• While the PDP context for GPRS is activated it is recommended to terminate
any calls with AT+CHLD=1 rather than usind ATH. This is significant because
ATH would also cancel an active PDP context. See also Chapters 2.12 and
6.3.2.
MC35_ATC_01_V04.00 Page 74 of 238 02.04.2002
AT Command Set
4.17 AT+CHUP Hang up call
Test command
AT+CHUP=?
Response
OK
Execute command
AT+CHUP
Cancels all active and held calls.
Response
OK/ERROR
Reference
GSM 07.07
Note
AT+CHUP implements the same behaviour as ATH (see Chapter 2.12).
4.18 AT+CIMI Request international mobile subscriber identity
Test command
AT+CIMI=?
Execute command
AT+CIMI
Response
OK
Response
TA returns < IMSI> for identifying the individual SIM which is attached to ME.
<IMSI> OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<IMSI> International Mobile Subscriber Identity (string without quotes)
Reference
GSM 07.07
Note
MC35_ATC_01_V04.00 Page 75 of 238 02.04.2002
AT Command Set
4.19 AT+CIND Indicator control
MC35 offers two ways of displaying status and event reporting messages by indicators. With
AT+CIND? you can directly query the current status of each indicator. With AT+CMER you can enable or disable the presentation of these indicators in the form of the Unsolicited Result Code
+CIEV. See Chapter 4.25 for instructions.
MC35 supports indicator event reporting for the following items: battery capacity, signal quality,
service availability, generation of sound in the ME, indication of unread SMS, full SMS storage, call
in progress and roaming activities. Whenever a status change or event occurs, MC35 sends the associated URC to the application (if enabled with AT+CMER).
Please note that the AT+CMER command enables the presentation of +CIEV URCs only if the indicators are registered with the AT+CIND write command. By default, all of them are registered. Any
URCs you do not need can easily be excluded if deregistered with <stat>=0.
Test command
AT+CIND=?
Read command
AT+CIND?
Response
+CIND: (<descr>,(list of supported <ind>s)) [,(<descr>,(list of supported
<ind>s))[,...]]
Parameters
See read command
Response
TA returns the status of the ME indicators.
+CIND: <ind>[,<ind>[,...]]
OK
If error is related to ME functionality
+CME ERROR: <err>
Parameter
<ind> integer type value, which shall be in range of corresponding <descr>
<descr> values reserved by this ETS and their <ind> ranges:
"battchg" battery charge level (0-5),
where (0-5) means 0, 20, 40, 60 or 100 per cent
of the the remaining battery capacity. If no battery
is connected to the ME, then the value will be always equal to 5. See also Chapter 8.5.
"signal" signal quality (0-7 or 99 if not measurable). The
indicated value is the bit error rate of the signal
quality. See also Chapter 4.46.
"service" service availability (0-1)
"sounder" sounder activity (0-1)
"message" unread message (0-1)
"call" call in progress (0-1). Voice und data calls only.
"roam" roaming indicator (0-1)
"smsfull" a short message memory storage in the MT has
become full (1) or memory locations are available
(0); i.e. the range is (0-1)
MC35_ATC_01_V04.00 Page 76 of 238 02.04.2002
AT Command Set
Write command
AT+CIND=
[<stat>[,<stat>
[,...]]]
Reference
GSM 07.07
Examples
The write command simply controls the registration / deregistration of indicators.
<stat> 0 Indicator is deregistered. The indicator cannot be presented as
+CIEV URC, but can be directly queried with AT+CIND?.
1 Indicator is registered, indicator event report is allowed.
Note
The indicator “call” changes its value as soon as a call has been established, that
is when both interlocutors are connected.
The indicator “sounder” appears each time a tone is generated in the ME. For instance, a waiting call produces a tone, which will be thus indicated.
^SYSSTART
at+cpin=9999
OK
at+cind?
+CIND: 5,99,1,0,0,0,0,0 The battery is either full or an external supply
source is used. The bit error rate of the signal
quality is not available (since there no call in
progress), and the ME is registered to its home
network.
OK
at+cmer=2,0,0,2 Now, activate the Indicator Event Report with
at+cmer
OK
+CIEV: message,0
+CIEV: battchg,5
+CIEV: signal,99
+CIEV: service,1
+CIEV: sounder,0
+CIEV: call,0
+CIEV: roam,0
+CIEV: smsfull,0
atd"0123456"; You make a call.
OK
+CIEV: sounder,1 A set of +CIEV URCs reports is presented.
+CIEV: call,1
+CIEV: sounder,0
+CIEV: call,0 The receiver hangs up.
NO CARRIER
at+cind=,,,0,,0 You deregister the indicators ‘call’ and
‘sounder’
OK
atd"0123456"; You make a call.
OK
This time, no +CIEV URCs are displayed.
NO CARRIER
MC35_ATC_01_V04.00 Page 77 of 238 02.04.2002
AT Command Set
4.20 AT+CLCC List current calls of ME
Test command
AT+CLCC=?
Response
OK
Parameters
Execute command
AT+CLCC
Response
TA returns a list of current calls of ME. If command successful, but no calls are
available, no information response is sent to TE.
[+CLCC: <id1>,<dir>,<stat>,<mode>,<mpty>,
[<number>,<type>,[<alpha>]]]
[<CR><LF>+CLCC: <id2>,<dir>,<stat>,<mode>,<mpty>,
[<number>,<type>,[<alpha>]]]
[...]]] OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameters
<idx> Integer type; call identification number as described in GSM
02.30[19] subclause 4.5.5.1; this number can be used in +CHLD
command operations
<dir> 0 mobile originated (MO) call
1 mobile terminated (MT) call
<stat> state of the call:
0active
1 held
2 dialing (MO call)
3 alerting (MO call)
4 incoming (MT call)
5 waiting (MT call)
<mode> bearer/teleservice:
0voice
1 data
2fax
9 unknown
<mpty> 0 call is not one of multiparty (conference) call parties
1 call is one of multiparty (conference) call parties
<number> string type phone number in format specified by <type>
<type> type of address octet in integer format; 145 when dialling string
includes international access code character “+”, otherwise 129
<alpha> string type alphanumeric representation of <number> corre-
sponding to the entry found in phonebook; used character set
should be the one selected with command Select TE Character
Set +CSCS
Reference
Note
GSM 07.07
MC35_ATC_01_V04.00 Page 78 of 238 02.04.2002
AT Command Set
4.21 AT+CLCK Facility lock
Test command
AT+CLCK=?
Execute command
AT+CLCK=<fac>,
<mode>
[,<passwd>
[,<class>]]
Response
+CLCK: (list of supported <fac>s) OK
Parameter
See execute command
Use this command to lock, unlock or interrogate a ME or a network facility
<fac>. The command can be aborted when network facilities are being set or
interrogated.
Response
If <mode> ≠ 2 and command is successful
OK
If <mode> = 2 and command is successful
+CLCK: <status>[,<class1>[<CR><LF>
+CLCK: <status>, class2....]] OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<fac> Phone security locks set by client or factory:
“SC” SIM (lock SIM cards). SIM requests password upon ME power-
up and when this lock command is issued. "SC" lock is protected
with SIM PIN1. The number can be modified with AT+CPWD or
AT^SPWD. See examples in Chapter 4.21.2 for further explanations.
“PS” Phone locked to SIM card. ME requests password when other
than current SIM card is inserted.
If set individually by the client, the password for the "PS" lock
can be specified with AT+CPWD or AT^SPWD.
If set by factory (e.g. for a prepaid mobile), the password is supplied by the provider or operator.
“FD” SIM fixed dialling memory: If the mobile is locked to "FD", only
the phone numbers stored to the "FD" memory can be dialled
(depending on the SIM card, usually up to 7 numbers). If PIN2
authentication has not been performed during the current session, PIN2 is requested as <passwd>.
"CS" Keypad lock (not supported since keypad cannot be directly
connected to the GSM engine)
Note: Primarily intended for the client to take safety precautions, "SC",
"PS" and "FD" can be configured individually. "PS" may also be
factory set.
"PS" lock is frequently referred to as "phone lock", or "device
lock". Accordingly, the password may be called "phone code" or
"device code". The "PS" password is not associated with the
PUK of the SIM card. If incorrectly entered three times, the
Master Phone Code is required to lift the lock. Once the Master
Phone Code has been acctepted, the mobile is operational, and
the "PS" lock is no longer active. If needed it must be set once
again. See Chapter 4.35.1 and examples below for further details.
MC35_ATC_01_V04.00 Page 79 of 238 02.04.2002
AT Command Set
Factory set SIM locks
“PF” lock Phone to the very First SIM card
“PN” Network Personalisation
“PU” Network subset Personalisation
“PP” Service Provider Personalisation
“PC” Corporate Personalisation
Note: Typical examples of factory set SIM locks are prepaid phones or
network locks, used to restrict the operation of a mobile to a specific provider or operator. The client should be aware that each of
these lock types can only be unlocked if the associated password is available. For example, a mobile can be locked to accept
only SIM cards from the respective provider, or even one single
SIM card. Once a different SIM card is inserted the ME will
prompt the client to enter a specific code. This is not the PUK of
the SIM card, but usually an 8-digit code which needs to be requested from the provider.
The locks can only be set by the manufacturer and need to be
agreed upon between the parties concerned, e.g. provider, operator, distributor etc. on the one side and the manufacturer on
the other side. For details contact your local dealer or Siemens
AG.
See Chapter 4.35 and 4.35.1 for further instructions.
Supplementary Service: Call barring:
“AO” BAOC (Bar All Outgoing Calls)
“OI” BOIC (Bar Outgoing International Calls)
“OX” BOIC-exHC (Bar Outgoing International Calls except to Home
Country)
“AI” BAIC (Bar All Incoming Calls)
“IR” BIC-Roam (Bar Incoming Calls when Roaming outside the home
country)
“AB” All Barring services (applicable only for <mode>=0)
“AG” All outGoing barring services (applicable only for <mode>=0)
“AC” All inComing barring services (applicable only for <mode>=0)
Note: The availability of the Supplementary Services varies with the
network. To benefit from call barring the client will need to sub-
scribe them, though a limited number of call barring types may
be included in the basic tariff package. Call barring is protected
by a password supplied from the provider or operator. Usually
there is one password which applies to all call barring options.
For details contact your provider.
<mode> 0 unlock
1lock
2 query status
<passwd> password
See Chapters 4.38 and 8.35 for instructions of how to specify passwords.
<class> integer or sum of integers each representing a <class> of information:
1voice
2 data
4fax
8 short message service
16 data circuit sync
MC35_ATC_01_V04.00 Page 80 of 238 02.04.2002
AT Command Set
32 data circuit async
64 dedicated packet access
128 dedicated PAD access
x combination of some of the above classes.
For example, the default setting 7 represents the sum of the
integers 1, 2 and 4 (call barring for voice, data and fax). The
value 255 covers all classes. If the <class> parameter is
omitted, the default value 7 is used.
See examples in 4.21.3 for correct handling of class numbers.
<status> 0off
1on
Reference
GSM 07.07
Note
*# codes sent with ATD cannot be used to enter the Master Phone Code.
4.21.1 Examples: Enabling / disabling PIN 1 authentication
Example 1
To lock or unlock the SIM card: The "SC" parameter enables or disables the
SIM PIN authentication (PIN 1) when you power up the GSM engine:
AT+CLCK="SC",1,9999 Activates SIM card lock.
OK As a result, SIM PIN 1 must be entered to en-
able ME to register to the GSM network.
AT+CLCK="SC",0,9999 Unlocks SIM card.
OK When powered up, ME registers to the GSM
network without requesting SIM PIN1.
Note: Depending on the services offered by the
provider, this feature is not supported by all
SIM card types. If so, the command returns
ERROR when you attempt to unlock the card.
Example 2
To query the status of the SIM card lock:
AT+CLCK="SC",2
+clck: 1 SIM card is locked. SIM PIN1 must be entered
to enable ME to register to the GSM network.
4.21.2 Examples: Phone lock
Example 1
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Be sure that PIN 1 authentication is valid:
AT+CPIN?
+CPIN: SIM PIN
OK
AT+CPIN=9999
OK
AT Command Set
Example 2
To lock the mobile to the currently inserted SIM card, first specify a password (=
a phone code):
AT+CPWD="PS",,1234 If "PS" lock has not been set before: enter new
OK password.
or:
AT+CPWD="PS",1234,3333 To replace existing "PS" password: Enter old
OK and new one.
Then, activate the phone lock:
AT+CLCK="PS",1,3333 Locks the mobile to the current SIM card.
OK
To deactivate the phone lock:
AT+CLCK="PS",0,3333 Enter lock type "PS", followed by 0 to lift the
OK lock. Then type "PS" lock password.
As a result, the mobile accepts any SIM card and can be operated after the
card's SIM PIN 1 was entered.
Example 3
Example 4
Example 5
To operate the mobile with the SIM card for which "PS" lock was activated:
AT+CPIN? Enter SIM PIN used when locking the mobile.
+CPIN: SIM PIN "PS"lock password is not needed.
AT+CPIN=9999
OK
To operate the mobile with other SIM card than the one used for the "PS" lock:
Enter SIM PIN of present card, followed by "PS" lock password.
AT+CPIN? Enter SIM PIN of present SIM card.
+CPIN: SIM PIN
AT+CPIN=1111
OK SIM PIN accepted.
AT+CPIN?
+CPIN: PH-SIM PIN "PS" lock password is required.
AT+CPIN=3333
OK "PS" lock password has been accepted.
Attempt to unblock the "PS" lock using an invalid password:
AT+CPIN? Enter SIM PIN of present SIM card.
+CPIN: SIM PIN
AT+CPIN=1111
OK SIM PIN accepted.
AT+CPIN?
+CPIN: PH-SIM PIN "PS" lock password is required.
AT+CPIN=4444 Bad password is given:
+CME ERROR: incorrect password
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AT Command Set
After the "PS" lock password was incorrectly entered three times in a row:
AT+CPIN?
+CPIN: PH-SIM PUK Master Phone Code is required (8-digit code
available from the manufacturer. See Chapter
4.35.1).
AT+CPIN=12345678 Master Phone Code has been accepted. As a
result, the mobile is operational, and the "PS"
lock is totally removed. If needed, it must be set
once again.
Example 6
Attempt to unblock the "PS" lock using an invalid Master Phone Code: Due to
the timing algorithm explained in Chapter 4.35.1 the intervals between each
attempt are getting longer. See also AT^SPIC in Chapter 8.31.
Example 7
As an alternative to the AT+CPIN command you can use AT+CPWD. In this
case the following syntax shall be observed: AT+CPWD=PS,Master Phone
Code[,new password].
AT+CPWD=PS,12345678 Deactivates the "PS" lock.
Or
AT+CPWD=PS,12345678,3333 Deactivates the present "PS" lock
and sets a new "PS" lock.
4.21.3 Examples: Call barring
Please note that when you configure or query call barring without specifying any classes, the settings
will refer to classes 1, 2 and 4 only (default setting).
Remember that most of the call barring types have to be subscribed to. Usually, the service is subject
to a password supplied from the provider.
Example 1
When checking the status of barring for outgoing international calls without
specifying classes, please note that the ME returns only the status of voice,
data, fax calls. The status of SMS and other classes will not be indicated.
at+clck=oi,2,0000 or without <passwd>: at+clck=oi,2
+CLCK: 1,1 outgoing international voice calls barred
+CLCK: 1,2 outgoing international data calls barred
+CLCK: 1,4 outgoing international fax calls barred
OK
Example 2
To check the call barring status of all services, you are required to enter the integer sum referring to all classes:
at+clck=oi,2,0000,15 or without <passwd>: at+clck=oi,2,,15
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AT Command Set
Example 3
Example 4
Example 5
+CLCK: 1,1 outgoing international voice calls barred
+CLCK: 1,2 outgoing international data calls barred
+CLCK: 1,4 outgoing international fax calls barred
+CLCK: 1,8 outgoing international SMS barred
OK
To activate call barring for outgoing international voice and data calls:
at+clck=oi,1,0000,3 (where 3 is the sum of class 1 + class 2)
OK
To disable call barring for outgoing international fax (class 4) and SMS (class 8)
calls:
at+clck=oi,0,0000,12 (where 12 is the sum of class 4 + class 8)
OK
To check whether actions in example 3 and 4 were successful, check the status
of barring for all outgoing international calls:
at+clck=oi,2,0000,15
Example 6
+CLCK: 1,1 outgoing international voice calls barred
+CLCK: 1,2 outgoing international data calls barred
+CLCK: 0,4 outgoing international fax calls are allowed
+CLCK: 0,8 outgoing international SMS are allowed
OK
To allow outgoing international calls without specifying classes:
at+clck=oi,0,0000,15
OK
To query status without specifying classes:
at+clck=oi,2
+CLCK: 0,1 outgoing international voice calls allowed
+CLCK: 0,2 outgoing international data calls allowed
+CLCK: 0,4 outgoing international fax calls allowed
To query status for all classes:
at+clck=oi,2,0000,15
+CLCK: 0,1
+CLCK: 0,2
+CLCK: 0,4
+CLCK: 0,8
OK
MC35_ATC_01_V04.00 Page 84 of 238 02.04.2002
AT Command Set
4.22 AT+CLIP Calling line identification presentation
Test command
AT+CLIP=?
Read command
AT+CLIP?
Write command
AT+CLIP=<n>
Unsolicited result
code
This command refers to the GSM supplementary service CLIP (Calling Line
Identification Presentation) that enables a called subscriber to get the calling line
identity (CLI) of the calling party when receiving a mobile terminated call.
Response
+ CLIP: (list of supported <n>s) OK
Parameter
See write command
Response
+CLIP: <n>, <m> OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
See write command
Set command enables or disables the presentation of the CLI at the TE. It has no
effect on the execution of the supplementary service CLIP in the network.
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<n> 0 suppress unsolicited result codes
1 display unsolicited result codes
<m> 0 CLIP not provisioned
1 CLIP provisioned
2 unknown
When CLIP is enabled at the TE (and is permitted by the calling subscriber), an
unsolicited result code is returned after every RING (or +CRING: <type>) at a
mobile terminating call.
Voice call response format:
+CLIP: <number>, <type>,,,,<CLI validity>
Data/FAX call response format:
+CLIP: <number>, <type>
Parameter
<number> string type phone number of calling address in format specified by
<type>
<type> type of address octet in integer format; 145 when dialling string in-
cludes international access code character “+”, otherwise 129.
<CLI validity>
0CLI valid
1 CLI has been withheld by the originator.
3 CLI is not available due to interworking problems or limitations
of originating network. <number> shall be an empty string ("")
and <type> value will not be significant.
Reference
Note
GSM 07.07
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AT Command Set
4.23 AT+CLIR Calling line identification restriction (by *# sequence)
The AT+CLIR command is not supported. Instead, you can handle CLIR on a call-by-call basis using
the ATD command and a *# sequence.
Read command
ATD*#31#
Execute commands
Run the Read command to query status:
Response
+CLIR: <n>,<m>
Defined values
<n> (parameter shows the settings for outgoing calls):
0 presentation indicator is used according to the
subscription of the CLIR service
1 CLIR invocation
2 CLIR suppression
<m> (parameter shows the subscriber CLIR service status in
the network):
0 CLIR not provisioned
1 CLIR provisioned in permanent mode
2 unknown (e.g. no network, etc.)
3 CLIR temporary mode presentation restricted
4 CLIR temporary mode presentation allowed
The Execute commands allow you to enable or disable the presentation of your phone number to the called party when you set up a call:
ATD*31#<Phonenumber>[;]
ATD#31#<Phonenumber>[;]
Deactivate CLIR = enable presentation of own phone number
to called party
Activate CLIR = suppress presentation of own phone number to
called party
Note:
<Phonenumber> = phone number of called party
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AT Command Set
4.24 AT+CLVL Loudspeaker volume level
Test command
AT+CLVL=?
Response
+CLVL: (list of supported <level>s)OK
Read command
AT+CLVL?
Write command
AT+CLVL=<level>
Reference
GSM 07.07
Response
+CLVL: <level>
OK/ERROR/+CME ERROR
Response
OK/ERROR/+CME ERROR
Parameter
<level> Loudspeaker Volume Level (0-4)
Note
• The volume level cannot be modified in audio mode 1.
• The changed volume level will not be saved with AT^SNFW, instead it
will be saved after AT^SMSO only.
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AT Command Set
4.25 AT+CMER Mobile equipment event reporting
Test command
AT+CMER=?
Read command
AT+CMER?
Write command
AT+CMER=
[<mode>
[,<keyp>
[,<disp> [,<ind>
[,<bfr>]]]]]
Response
+CMER: (list of supported <mode>s),(list of supported <keyp>s),
(list of supported <disp>s),(list of supported <ind>s),(list of supported <bfr>s)
Parameter
See execute command
Response
+CMER: <mode>,<keyp>,<disp>,<ind>,<bfr>
Parameter
See execute command
Enables or disables the presentation of event reports to the TE in the form of
+CIEV Unsolicited Result Codes. See the <desc>> parameter for the list of
indicators.
Response
OK
Parameter
<mode> 0 discard CIEV unsolicited result codes
1 discard CIEV unsolicited result codes when TA-TE link is
reserved (e.g. in on-line data mode); otherwise forward them
directly to the TE
2 Buffer CIEV unsolicited result codes in the TA when TA-TE link
is reserved (e.g. in on-line data mode) and flush them to the
TE after reservation. Otherwise forward them directly to the
TE.
3 forward CIEV unsolicited result codes directly to the TE; TA-TE
link specific inband technique used to embed result codes and
data when TA is in on-line data mode
<keyp> 0 no keypad event reporting
<disp> 0 no display event reporting
<ind> 0 no indicator event reporting
2 indicator event reporting using result code
+CIEV: <desc>,<value>
<desc> indicates the indicator’s name and <value> is the new
value of this indicator.All indicator events shall be directed from
TA to TE.
<bfr> 0 TA buffer of unsolicited result codes defined within this
command; is cleared when <mode> 1...3 is entered
<desc> values reserved by this ETS and their <value> ranges:
"battchg" battery charge level (5 only = no level measuring)
"signal" signal quality (0-7 or 99 if not measurable)
"service" service availability (0-1)
"sounder" sounder activity (0-1)
"message" unread message (0-1)
"call" call in progress (0-1). Voice und data calls only.
"roam" roaming indicator (0-1)
"smsfull" a short message memory storage in the MT has
become full (1) or memory locations are available
(0); i.e. the range is (0-1)
MC35_ATC_01_V04.00 Page 88 of 238 02.04.2002
AT Command Set
Reference
GSM 07.07
Unsolicited Result Code:
+CIEV: <desc>,<value>
Note
Only the indicators which are registered (see AT+CIND command), will be reported if CMER is enabled.
While the ME is in online data mode, and CMER’s <mode> equals to 3, no URC
will be displayed on the TE, but they will be available after ‘+++’ has been entered.
After CMER has been switched on, URCs for all registered indicators with their
default value, will be presented to the TE.
4.26 AT+CMEE Report mobile equipment error
Test command
AT+CMEE=?
Read command
AT+CMEE?
Response
+CMEE: (list of supported <n>s) OK
Parameter
See write command
Response
+CMEE: <n> OK
Parameter
See write command
Write command
AT+CMEE=<n>
Example
Reference
GSM 07.07
This command controls the presentation of the result codes +CME ERROR:
<err> and CMS:<err> that indicate errors relating to ME functionality.
When you power down or reset the ME with AT+CFUN=1,1 the setting will be reset to its default. The levels 1 or 2 need to be selected every time you reboot the
ME, or may be included, for permanent use, in the user profile saved with AT&W.
Response
OK
Parameter
<n> 0 disable result code (only 'ERROR' will be displayed)
1 enable result code and use numeric values
2 enable result code and use verbose values
To obtain enhanced error messages it is recommended to choose <n>=2.
AT+CMEE=2
OK
Note
• The possible error result codes are listed in chapter 9
• In multiplex mode (see “AT+CMUX Enter multiplex mode”, pg. 91) the setting
applies only to the logical channel where selected. The setting on the other
channels may differ.
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AT Command Set
4.27 AT+CMUT Mute control
Test command
AT+CMUT=?
Response
+CMUT: (list of supported <n>s)
OK
Read command
AT+CMUT?
Write command
AT+CMUT=<n>
Reference
GSM 07.07
Response
+CMUT: <n>
OK/ERROR/+CME ERROR
Response
OK/ERROR/+CME ERROR
Parameter
<n>: 0 mute off
1 mute on
Note
MC35_ATC_01_V04.00 Page 90 of 238 02.04.2002
AT Command Set
4.28 AT+CMUX Enter multiplex mode
MC35 supports Multiplex mode according to the GSM 07.10 Multiplexer Protocol and enables one
physical serial asynchronous interface to be partitioned into three virtual channels. This allows you
to take advantage of up to 3 simultaneous sessions running on the serial interface. Each session
represents a stream of bytes conveying various data; such as voice, fax, data, SMS, phonebook information, battery status etc. For example, you can transfer data over one channel while two further
channels are free to control the GSM engine with AT commands. It should be noted, however, that
voice, data, fax or GPRS calls cannot be established simultaneously, since the mobile device provides just one air interface to the network.
To make the three virtual interfaces (channels) available, both the MC35 module and the customer
application must contain Mux components which communicate over the Multiplexer Protocol. In the
MC35 module, the Mux/MP software is already incorporated. The customer application should either
integrate the MC35 Mux/MP software or include a Mux/MP program developed by the customer. The
AT+CMUX write command starts the multiplexing protocol control channel.
Refer to [5] which provides to a detailed description of the Multiplex functionality implemented in
MC35 and step-by-step instructions of how to install and configure the MUX mode. The source files
of the MC35 Mux/MP software can be supplied on request. Please contact your local dealer to obtain the latest installation software and user's guide.
Test command
AT+CMUX=?
Read command
AT+CMUX?
Write command
AT+CMUX=<mode>
Response
+CMUX: (list of supported <mode>s) OK
Response
+CMUX: <mode> OK
If error is related to ME functionality:
+CME ERROR: <err>
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<mode> multiplexer transparency mechanism
0 basic option
Subparameters defined in GSM07.07 are adjusted for control and logical
channels as follows:
<subset> 0 UIH frames used only (control channel)
Reference
GSM 07.07
Note
1. The write command is used to enter the multiplex mode. The setup of
the logical channels is initiated by the TE, i.e. the TE acts as initiator.
This means that the TE shall ensure that logical channels are established before any further actions on the channels can be started.
2. There is a timeout of five seconds, if the multiplexer protocol is enabled
and no multiplexer control channel is established. The GSM engine re-
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AT Command Set
turns to the AT command mode.
3. There are various options to switch from data mode to command mode:
a) Escape sequence +++
b) Circuit 108/2 (DTR) changes from ON to OFF, reaction depends on
command at&d (caution if AT&D0: TA ignores status on DTR).
c) The message Modem Status Command (MSC) for control channel is
defined by the multiplexer protocol GSM07.10. MSC conveys V.24
signals. Bit 3 of Control Signal Octet is DTR, reaction depends on
command at&d (caution if AT&D0: TA ignores status on DTR).
4. The parameter maximum frame size (N1) of AT+CMUX in GSM07.07 is
fixed to 97 and cannot be changed. All other parameters are not available.
5. Multiplex mode can be terminated by AT^SMSO (,AT^SMSO Switch off
mobile station" pg. 191). It has to be reestablished after power-on.
4.28.1 Restricted use of AT commands in Multiplex mode
In Multiplex mode, the operation of several AT commands varies from the normal mode. This chapter
summarizes the concerned commands. For general rules and restrictions to be considered in Multiplex
mode please refer to [5].
Data, fax and GPRS calls can only be set up on logical channel 1. Due to this restriction, AT commands have a different behaviour on channels 2+3 compared to channel 1. Several commands are
not available, others return different responses. These commands are listed in the table below:
Table 6: Availability of AT commands on virtual channels
Command Behaviour on channel 1 Differences on channel 2+3
+++ as described not usable
ATE as described as described
AT+CBST as described not usable
AT+CR as described not usable
AT+CRLP as described not usable
AT+CG... (GPRS commands) as described usage not recommended
AT+F.... (Fax commands) as described not usable
AT&C as described not usable
AT&D as described not usable
AT&F as described data call parameters not changed
S3, S4 not changed
AT&S as described not usable
AT&V as described data call parameters not displayed
ATA as described no data calls
ATD as described no data calls
ATDI<n> as described not usable
ATO as described not usable
ATS0 1)
ATS3 1)
as described not usable
as described as described
2)
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AT Command Set
Command Behaviour on channel 1 Differences on channel 2+3
ATS4 1)
ATS5 1)
ATS6 1)
ATS7 1)
ATS8 1)
ATS10 1)
ATS18 1)
AT\Q as described not usable
ATZ as described data call parameters not changed
1
)
Siemens GSM engines support the registers S0 - S29. You can change S0, S3, S4, S5, S6, S7,S8,
S10 and S18 using the related ATSn commands (see starting from pg. 26). The other registers are
read-only and for internal use only!
2)
MC35 allows to use the GPRS commands on all logical channels, but to remain compatible to future releases it is recommended to use them on channel 1 only. PDP contexts can be defined on
any channel, but are visible and usable only on the channel on which they are defined (thus it is
not possible to define a context on channel 2 and activate it on channel 3). GPRS data calls can be
initiated on any channel but will be always established on channel 1.
as described as described
as described not usable
as described not usable
as described not usable
as described not usable
as described not usable
as described not usable
Table 7: Summary of AT commands with different behaviour in Multiplex mode
Command Description Chapter
ATH Terminates any call in progress, no matter what channel was used to
2.12
enter ATH
AT&V Different default configurations on channels 1, 2 and 3 2.37
AT+IPR Before you start Multiplex mode, it is recommended to set the ME to
2.45
57600 bps, especially if you want to use all the three channels. Once
it is activated, the bitrate on channels 2 + 3 should be set to 19200
bps.
AT+IPR=0 Autobauding is not compatible with Multiplex mode. It is neither pos-
2.45.1
sible to start MUX when autobauding is active, nor to set autobauding
during Multiplex mode.
AT+CALA Alarm calls can be separately configured on each channel. The read
4.2
command returns the total number of alarm calls activated on all
channels.
AT+CMEE Presentation mode can be separately configured for each channel. 4.26
AT+CNMA If Multiplex mode is activated the +CNMI parameter will be set to zero
5.9
on all channels, if one channel fails to acknowledge an incoming
message within the required time.
AT+CNMI Phase 2+ parameters can only be used on one channel. The pa-
5.10
rameter for <mt> and <ds> on the other channels have to be set to
zero.
If either a SM or a Status Report is not acknowledged, all +CNMI parameter will be set to zero on all channels.
MC35_ATC_01_V04.00 Page 93 of 238 02.04.2002
AT Command Set
4.29 AT+COPN Read operator names
Test command
AT+COPN=?
Response
OK
Execute command
AT+COPN
Reference
GSM 07.07
TA returns the list of operator names from the ME. Each operator code <numericn> that has an alphanumeric equivalent <alphan> in the ME memory is
returned.
Response
+COPN: numeric <numeric1>,long alphanumeric <alpha1><CR><LF>
+COPN:.....OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<numericn> string type; operator in numeric form; GSM location area iden-
tification number
<alphan> string type; operator in long alphanumeric format; can contain
up to 16 characters
Note
See also AT^SPLM, pg. 205
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AT Command Set
4.30 AT+COPS Operator selection
This command can be used to query the present status of the ME's network registration and to determine whether automatic or manual network selection shall be used.
Automatic mode: Lets the ME automatically search for the home operator. If successful the ME
registers to the home network and enters the IDLE mode. If the home network
is not found, ME goes on searching. If then a permitted operator is found, ME
registers to this operator. If no operator is found the ME remains unregistered.
Manual mode: Desired operator can be manually entered, using the AT+COPS write com-
mand syntax. If operator is found, ME registers to this operator. If the selected
operator is forbidden, the ME remains unregistered.
Manual/automatic: In this mode, the ME first tries to find the operator that was manually entered.
If the ME fails to register to this operator, then it starts to select automatically
another network.
Test command
AT+COPS=?
Read command
AT+COPS?
TA returns a list of quadruplets, each representing an operator present in the
network. The list of operators is presented in the following order: Home network, networks referenced in SIM, and other networks. Two commas in a
succession (,,) are a placeholder for the non-implemented <format>1 (short
alphanumeric operator name).
Response
+COPS: (list of supported (<stat>, long alphanumeric <oper>,, numeric
<oper>s) [,(list of supported <mode>s), (list of supported <format>s)] OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameters
<stat> 0 unknown
1 operator available
2 current operator (registered)
3 forbidden operator
<oper> operator as per <format>
<mode> 0 - 4 see write command
<format> 0 - 2 see write command
TA returns the current mode and, if registered, the currently used operator. If
the ME is unregistered, <format> and <oper> are omitted.
Response
+COPS: <mode>[, <format>[, <oper>]] OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameters
See write command
Write command
AT+COPS=
<mode>
[,<format>[,<oper>]]
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The write command allows you to choose whether the GSM network operator
is to be selected automatically or manually. When using the manual mode, the
<operator> must be entered, no matter whether you want to search for the
home operator or another one.
AT Command Set
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameters
<mode> 0 automatic mode; <oper> field is ignored
1 manual operator selection
<oper> field must be present, <format> can only be = 2
2 manually deregister from network and remain unregistered
until mode 0,1,4 is selected
3 set <format> for read command +COPS?
4 combination of manual/automatic mode;
if manual selection fails, ME switches to automatic mode
(<mode>=0). (<oper> field must be present)
<oper> operator as per <format>
<format> 0 long format alphanumeric <oper>; up to 16 characters
2 numeric <oper>; GSM Location Area Identification number
Reference
GSM 07.07
Example 1
Example 2
Note
To query the present status of ME's network registration using the test command:
AT+COPS=?
+COPS: (2,"D2",,"26202"),(3,"E-Plus",,"26203"),(3,"T-
D1",,"26201"),(3,"Interkom",,"26207"),,(0-4),(0,2)
OK
Registered operator is D2. The other operators are present in the network, but
not allowed to be used with the current SIM card.
To query the status of the ME's network registration using the read command:
AT+COPS?
+COPS: 0,0,"D2" (command returns mode, format, registered operator)
OK
Attempt to manually select a forbidden operator:
AT+COPS=1,2,26203
OK
If the selected operator was not allowed, the ME is now unregistered. The
read command will return only the mode, but no operator:
AT+COPS?
+COPS: 1
In this case, the test command returns only that the desired operator is available (<stat=1). Nevertheless, the registration is not successful. Please use the
AT+CREG command (Chapter 4.41) to verify the registration status.
AT+COPS=?
+COPS: (1,"D2",,"26202"),(3,"E-Plus",,"26203"),(3,"T-
D1",,"26201"),(3,"Interkom",,"26207"),,(0-4),(0,2)
OK
AT+CREG?
+CREG: 0,3 (where 3 = registration denied)
OK
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AT Command Set
4.31 AT+CPAS Mobile equipment activity status
Test command
AT+CPAS=?
Response
+CPAS: (list of supported <pas>s) OK
Parameter
See execute command
Execute command
AT+CPAS
Reference
GSM 07.07
Response
TA returns the activity status of ME.
+CPAS: <pas> OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<pas> 0 ready
3 incoming call (ringing)
4 call in progress or call hold
Note
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AT Command Set
4.32 AT+CPBR Read current phonebook entries
Test command
AT+CPBR=?
Execute command
AT+CPBR=<ind
ex1>[,<index2>]
Response
TA returns location range supported by the current storage as a compound value
and the maximum length of <number> and <text> fields.
Note:
If SIM storage is selected, the length may not be available. If storage does not
offer format information, the format list should be empty parentheses.
+CPBR: (list of supported <index>s), <nlength>, <tlength> OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
<index> supported range of location numbers (maximum number de-
pends on storage type)
<nlength> max. length of phone number, normally 20, for a small num-
ber of locations 40
<tlength> max. length of text assigned to phone number (depending on
storage type 16 - 18 characters including blanks)
Response
TA returns phonebook entries in location number range <index1> ... <index2>
from the current phonebook memory storage selected with +CPBS. If <index2> is
left out, only location <index1> is returned.
Example
+CPBR: <index1>, <number>, <type>, <text>[<CR><LF>+CPBR: .....+CPBR: <in-
dex2>, <number>, <type>, <text>] OK
If error is related to ME functionality:
+CME ERROR
Parameter
<index1> location number where reading starts
<index2> location number where reading ends
<number> phone number
<type> type of address octet in integer format; 145 when dialling string
includes international access code character “+”, otherwise 129.
<text> string type field of maximum length <tlength>. Character set as
specified with +CSCS.
1. First, run the Test command to find out the maximum range of entries stored
in the active phonebook:
AT+CPBR=?
TA returns the supported values in the format: +CPBR: (1-100),20,17 where
100 is the supported range of location numbers, 20 is the length of the phone
number and 17 is the maximum length of the text associated text.
2. Now, run the Execute command to display the phonebook entries sorted by
location numbers.
AT+CPBR =1,100
+CPBR 1,"+999999",145,"Charlie"
+CPBR: 2,"+777777",145,"Bill"
+CPBR: 3,"+888888",145,"Arthur" .........
Reference
Note
GSM 07.07
MC35_ATC_01_V04.00 Page 98 of 238 02.04.2002
AT Command Set
4.33 AT+CPBS Select phonebook memory storage
Test command
AT+CPBS=?
Read command
AT+CPBS?
Write command
AT+CPBS=
<storage>
Response
+CPBS: (list of supported <storage>s) OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
See write command
Response
TA returns currently selected memory:
+CPBS: <storage>,<used>,<total> OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
See write command
Response
TA selects current phonebook memory storage, which is used by other phonebook commands.
OK
If error is related to ME functionality:
+CME ERROR: <err>
Reference
GSM 07.07
Parameter
<storage> “SM” SIM phonebook (storage depends on SIM Card)
“FD” SIM fixdialling phonebook (FD Phonebook storage pos.1-7).
If the mobile is locked to FD, only the numbers stored to the
FD memory can be dialled. To edit the FD phonebook PIN 2
is required. See AT+CLCK Facility lock and AT^SLCK Facility lock.
“LD” SIM last-dialling-phonebook (LD Phonebook storage pos.1-
10) (+CPBW not be applicable to this storage)
“MC” ME missed (unanswered received) calls) (MC Phonebook
storage pos.1-10) list (+CPBW not applicable to this storage
“RC” ME received calls list (+CPBW not applicable for this stor-
age) (RC Phonebook storage pos.1-10)
“ON” SIM (or ME) own numbers (MSISDNs) list
“ME” ME Phonebook (storage pos.1-50)
<used> Integer type value indicating the number of used locations in se-
lected memory
<total> Integer type value indicating the maximum number of locations al-
lowed in the selected memory
Note
This command can be used right after power-on to get selected <storage>.
Since data need to be loaded from the SIM, values of <used> and <total> might
not be available for the first 20 seconds.
MC35_ATC_01_V04.00 Page 99 of 238 02.04.2002
AT Command Set
4.34 AT+CPBW Write phonebook entry
Test command
AT+CPBW=?
Write command
AT+CPBW=
[<index>]
[,<number>
[[,<type>]
[,<text>]]]
Response
TA returns location range supported by the current storage, the maximum
length of <number> field, supported number formats of the storage and the
maximum length of <text> field.
Note: The length may not be available while SIM storage is selected. If storage
does not offer format information, the format list should be empty parenthesises.
+CPBW: (list of supported <index>s), <nlength>, (list of supported <type>s),
<tlength> OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
See write command.
This command writes a phonebook entry to the memory location <index> of the
active memory.
The memory location number <index> is followed by the phone number <num-
ber> (in the format <type>) and the associated <text>.
If writing fails, an ME error +CME ERROR: <err> is returned.
Parameter
<index> Location number within phonebook memory, total range is given
in test command response
<number> Phone number, maximum length is given as <nlength> in test
command response
<type> Type of phone number (address octet in integer format); 145 when
dialling string includes international access code character “+”,
otherwise 129 (refer GSM 04.08 subclause 10.5.4.7)
<text> Text assigned to the phone number, maximum length is given in
test command response <tlength>. Character set as specified with
+CSCS. See note below.
<nlength> Max. length of phone number, normally 20, for a small number of
locations 40
<tlength> Max. length of text assigned to phone number (depending on
storage type 16 - 18 characters including blanks)
Response
OK/ERROR/+CME ERROR
To delete a phonebook entry simply enter the location number:
AT+CPBW=<index>
To write a phonebook entry to the first free location number:
AT+CPBW=,<number>,<type>,<text>
Reference
GSM 07.07
Note
If <text> contains characters which are coded differently in ASCII and GSM
(e.g. Ä, Ö, Ü), these characters have to be entered via escape sequences as
described in chapter “Supported character sets“, pg. 12.
MC35_ATC_01_V04.00 Page 100 of 238 02.04.2002
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