Siemens TC37 Module, TC35 Module, TC35 Terminal At Command Reference

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Siemens Cellular Engines

TC35 Module TC37 Module

TC35 Terminal

Version: 04.00

DocID: TC3X_ATC_01_V04.00

AT Command Set

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Document Name:

AT Command Set

Siemens Cellular Engines

Version: 04.00 Date: May 29, 2002 Doc Id: TC3X_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.

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.

TC3X_ATC_01_V04.00 Page 2 of 204 29.05.2002

AT Command Set

0 Version History .............................................................................................7

1 Introduction.................................................................................................10

1.1 Scope of the document ...........................................................................................................10

1.2 Supported product versions and related documents ..............................................................10

1.3 Conventions ............................................................................................................................11

1.4 AT command syntax ...............................................................................................................11

1.4.1 Using parameters....................................................................................................................11

1.4.2 Combining AT commands on the same command line ..........................................................12

1.4.3 Entering successive AT commands on separate lines ...........................................................12

1.5 Supported character sets ........................................................................................................13

1.6 Flow control.............................................................................................................................14

1.6.1 Software flow control (XON/OFF flow control)........................................................................14

1.6.2 Hardware flow control (RTS/CTS flow control) .......................................................................14

2 Standard V.25ter AT Commands ...............................................................15

2.1 A/ Repeat previous command line .........................................................................................15

2.2 +++ Switch from data mode to command mode....................................................................15

2.3 AT\Qn Flowcontrol .................................................................................................................16

2.4 ATA Answer a call..................................................................................................................16

2.5 ATD Mobile originated call to dial a number ..........................................................................17

2.6 ATD><mem><n> Originate call to phone number <n> in memory <mem> ..........................18

2.7 ATD><n> Originate call to phone number selected from active memory ..............................20

2.8 ATD><str> Originate call to phone number in memory with corresponding field ..................21

2.9 ATDI Mobile originated call to dialable ISDN number <n> ....................................................22

2.10 ATDL Redial last telephone number used .............................................................................23

2.11 ATE Enable command echo ..................................................................................................24

2.12 ATH Disconnect existing connection .....................................................................................24

2.13 ATI Display product identification information........................................................................25

2.14 ATI[value] Display additional identification information..........................................................25

2.15 ATL Set monitor speaker loudness........................................................................................26

2.16 ATM Set monitor speaker mode ............................................................................................26

2.17 ATO Switch from command mode to data mode...................................................................26

2.18 ATQ Set result code presentation mode................................................................................27

2.19 ATP Select pulse dialling .......................................................................................................27

2.20 ATS0 Set number of rings before automatically answering the call ......................................27

2.21 ATS2 Escape code sequence................................................................................................28

2.22 ATS3 Write command line termination character ..................................................................28

2.23 ATS4 Set response formatting character...............................................................................28

2.24 ATS5 Write command line editing character..........................................................................29

2.25 ATS6 Set pause before blind dialling.....................................................................................29

2.26 ATS7 Set number of seconds to wait for connection completion ..........................................30

2.27 ATS8 Set number of seconds to wait for comma dial modifier ..............................................30

2.28 ATS10 Set disconnect delay after indicating the absence of data carrier .............................31

2.29 ATS18 Extended error report.................................................................................................31

2.30 ATT Select tone dialling .........................................................................................................31

2.31 ATV Set result code format mode..........................................................................................32

2.32 ATX Set CONNECT result code format and call monitoring..................................................32

2.33 ATZ Set all current parameters to user defined profile ..........................................................33

2.34 AT&C Set circuit Data Carrier Detect (DCD) function mode..................................................33

2.35 AT&D Set circuit Data Terminal Ready (DTR) function mode...............................................34

2.36 AT&F Set all current parameters to manufacturer defaults ...................................................34

2.37 AT&S Set circuit Data Set Ready (DSR) function mode........................................................35

2.38 AT&V Display current configuration .......................................................................................36

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2.39 AT&W Store current configuration to user defined profile .....................................................37

2.40 AT+GCAP Request complete TA capabilities list ..................................................................38

2.41 AT+GMI Request manufacturer identification........................................................................38

2.42 AT+GMM Request TA model identification............................................................................38

2.43 AT+GMR Request TA revision identification of software status ............................................39

2.44 AT+GSN Request TA serial number identification(IMEI).......................................................39

2.45 AT+ILRR Set TE-TA local rate reporting ................................................................................40

2.46 AT+IPR Set fixed local rate.....................................................................................................41

2.46.1 Autobauding ............................................................................................................................42

3 AT Commands for FAX...............................................................................43

3.1 AT+FBADLIN Bad Line Threshold .........................................................................................43

3.2 AT+FBADMUL Error Threshold Multiplier..............................................................................44

3.3 AT+FBOR Query data bit order .............................................................................................44

3.4 AT+FCIG Query or set the Local polling id ............................................................................45

3.5 AT+FCLASS Fax: Select, read or test service class .............................................................45

3.6 AT+FCQ Copy Quality Checking ...........................................................................................46

3.7 AT+FCR Capability to receive................................................................................................46

3.8 AT+FDCC Query or set capabilities.......................................................................................47

3.9 AT+FDFFC Data Compression Format Conversion ..............................................................48

3.10 AT+FDIS Query or set session parameters...........................................................................49

3.11 AT+FDR Begin or continue phase C data reception..............................................................50

3.12 AT+FDT Data Transmission ..................................................................................................50

3.13 AT+FET End a page or document .........................................................................................51

3.14 AT+FK Kill operation, orderly FAX abort................................................................................51

3.15 AT+FLID Query or set the Local Id setting capabilities .........................................................51

3.16 AT+FMDL Identify Product Model..........................................................................................52

3.17 AT+FMFR Request Manufacturer Identification ....................................................................52

3.18 AT+FOPT Set bit order independently...................................................................................52

3.19 AT+FPHCTO DTE Phase C Response Timeout ...................................................................53

3.20 AT+FREV Identify Product Revision ......................................................................................53

3.21 AT+FRH Receive Data Using HDLC Framing .......................................................................53

3.22 AT+FRM Receive Data ..........................................................................................................54

3.23 AT+FRS Receive Silence ......................................................................................................54

3.24 AT+FTH Transmit Data Using HDLC Framing ......................................................................54

3.25 AT+FTM Transmit Data .........................................................................................................55

3.26 AT+FTS Stop Transmission and Wait ...................................................................................55

3.27 AT+FVRFC Vertical resolution format conversion .................................................................56

4 AT Commands originating from GSM 07.07.............................................57

4.1 AT+CACM Accumulated call meter (ACM) reset or query ....................................................57

4.2 AT+CALA Set alarm time.......................................................................................................58

4.3 AT+CAMM Accumulated call meter maximum (ACMmax) set or query................................61

4.4 AT+CAOC Advice of Charge information ..............................................................................62

4.5 AT+CBST Select bearer service type ....................................................................................63

4.6 AT+CCFC Call forwarding number and conditions control ....................................................64

4.6.1 Examples: Call forwarding ......................................................................................................65

4.7 AT+CCLK Real Time Clock ...................................................................................................67

4.8 AT+CEER Extended error report ...........................................................................................68

4.9 AT+CFUN Set phone functionality .........................................................................................69

4.10 AT+CGMI Request manufacturer identification ......................................................................71

4.11 AT+CGMM Request model identification...............................................................................71

4.12 AT+CGMR Request revision identification of software status ...............................................71

4.13 AT+CGSN Request product serial number identification (IMEI) identical to GSN ................72

4.14 AT+CHLD Call hold and multiparty .........................................................................................72

4.15 AT+CHUP Hang up call .........................................................................................................73

4.16 AT+CIMI Request international mobile subscriber identity ....................................................73

4.17 AT+CLCC List current calls of ME .........................................................................................74

4.18 AT+CLCK Facility lock ...........................................................................................................75

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4.18.1 Examples: Enabling / disabling PIN 1 authentication .............................................................77

4.18.2 Examples: Phone lock.............................................................................................................77

4.18.3 Examples: Call barring ............................................................................................................79

4.19 AT+CLIP Calling line identification presentation....................................................................81

4.20 AT+CLIR Calling line identification restriction (by *# sequence) ...........................................82

4.21 AT+CLVL Loudspeaker volume level ....................................................................................83

4.22 AT+CMEE Report mobile equipment error ............................................................................84

4.23 AT+CMUT Mute control .........................................................................................................85

4.24 AT+CMUX Enter multiplex mode ...........................................................................................86

4.24.1 Restricted use of AT commands in Multiplex mode................................................................87

4.25 AT+COPN Read operator names ..........................................................................................89

4.26 AT+COPS Operator selection ................................................................................................90

4.27 AT+CPAS Mobile equipment activity status ..........................................................................92

4.28 AT+CPBR Read current phonebook entries ..........................................................................93

4.29 AT+CPBS Select phonebook memory storage......................................................................94

4.30 AT+CPBW Write phonebook entry ........................................................................................95

4.31 AT+CPIN Enter PIN ...............................................................................................................96

4.31.1 What to do if PIN or password authentication fails? ...............................................................99

4.32 AT+CPIN2 Enter PIN2 .........................................................................................................101

4.33 AT+CPUC Price per unit and currency table .......................................................................103

4.34 AT+CPWD Change password .............................................................................................104

4.35 AT+CR Service reporting control .........................................................................................106

4.36 AT+CRC Set Cellular Result Codes for incoming call indication.........................................107

4.37 AT+CREG Network registration...........................................................................................108

4.38 AT+CRLP Select radio link protocol param. for orig. non-transparent data call..................110

4.39 AT+CRSM Restricted SIM access .......................................................................................111

4.40 AT+CSCS Set TE character set...........................................................................................112

4.41 AT+CSNS Single Numbering Scheme ................................................................................113

4.42 AT+CSQ Signal quality ........................................................................................................114

4.43 AT+CSSN Supplementary service notifications...................................................................115

4.44 AT+CUSD Unstructured supplementary service data .........................................................116

4.45 AT+VTD=<n> Tone duration................................................................................................117

4.46 AT+VTS DTMF and tone generation (<Tone> in {0-9, *, #, A, B, C, D}) .............................118

4.47 AT+WS46 Select wireless network .......................................................................................119

5 AT commands originating from GSM 07.05 for SMS .............................120

5.1 AT+CMGC Send an SMS command ...................................................................................120

5.2 AT+CMGD Delete SMS message........................................................................................121

5.3 AT+CMGF Select SMS message format .............................................................................121

5.4 AT+CMGL List SMS messages from preferred store ..........................................................122

5.5 AT+CMGR Read SMS message .........................................................................................125

5.6 AT+CMGS Send SMS message..........................................................................................128

5.7 AT+CMGW Write SMS message to memory.......................................................................130

5.8 AT+CMSS Send SMS message from storage.....................................................................132

5.9 AT+CNMA New SMS message acknowledge to ME/TE, only phase 2+ ............................133

5.10 AT+CNMI New SMS message indications ..........................................................................134

5.11 AT+CPMS Preferred SMS message storage ......................................................................137

5.12 AT+CSCA SMS service centre address ..............................................................................138

5.13 AT+CSCB Select cell broadcast messages.........................................................................139

5.14 AT+CSDH Show SMS text mode parameters .....................................................................140

5.15 AT+CSMP Set SMS text mode parameters.........................................................................141

5.16 AT+CSMS Select Message Service ....................................................................................142

6 Siemens defined AT commands for enhanced functions .....................143

6.1 AT+CXXCID Display card ID (identical to AT^SCID)...........................................................143

6.2 AT^MONI Monitor idle mode and dedicated mode ..............................................................144

6.3 AT^MONP Monitor neighbour cells......................................................................................146

6.4 AT^SACM Advice of charge and query of ACM and ACMmax ...........................................147

6.5 AT^SBC Battery charging / discharging and charge control................................................148

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6.6 AT^SCID Display SIM card identification number................................................................151

6.7 AT^SCKS Set SIM connection presentation mode and query SIM connection status........152

6.8 AT^SCNI List Call Number Information ...............................................................................153

6.9 AT^SCTM Set critical operating temperature presentation mode or query temperature.....154

6.10 AT^SDLD Delete the “last number redial“ memory..............................................................156

6.11 AT^SHOM Display Homezone.............................................................................................156

6.12 AT^SLCD Display Last Call Duration...................................................................................156

6.13 AT^SLCK Facility lock ..........................................................................................................157

6.14 AT^SMGL List SMS messages from preferred storage.......................................................158

6.15 AT^SMGO Set or query SMS overflow presentation mode or query SMS overflow ...........159

6.16 AT^SMGR Read SMS message without set to REC READ................................................160

6.17 AT^SMONC Cell Monitoring ................................................................................................161

6.18 AT^SMSO Switch off mobile station ....................................................................................162

6.19 AT^SM20 Set M20 Compatibility .........................................................................................162

6.20 AT^SNFD Set audio parameters to manufacturer default values........................................163

6.21 AT^SNFI Set microphone path parameters .........................................................................163

6.22 AT^SNFM Mute microphone................................................................................................164

6.23 Audio programming model ....................................................................................................164

6.24 AT^SNFO Set audio output (= loudspeaker path) parameter..............................................165

6.25 AT^SNFPT Call progress tones ..........................................................................................166

6.26 AT^SNFS Select audio hardware set...................................................................................167

6.27 AT^SNFV Set loudspeaker volume......................................................................................168

6.28 AT^SNFW Write audio setting in non-volatile store .............................................................168

6.29 AT^SPBC Search the first entry in the sorted telephone book ............................................169

6.30 AT^SPBG Read entry from active telephone book via sorted index ...................................170

6.31 AT^SPBS Steps the selected phonebook alphabetically.....................................................171

6.32 AT^SPIC Display PIN counter..............................................................................................172

6.33 AT^SPLM Read the PLMN list.............................................................................................173

6.34 AT^SPLR Read entry from the preferred operators list .......................................................174

6.35 AT^SPLW Write an entry to the preferred operators list......................................................175

6.36 AT^SPWD Change password for a lock ..............................................................................176

6.37 AT^SSCONF SMS Configuration........................................................................................177

6.38 AT^SSDA Set Display Availability.......................................................................................178

6.39 AT^SSYNC Configure SYNC Pin.........................................................................................179

6.40 AT^STCD Display Total Call Duration .................................................................................180

7 APPENDIX .................................................................................................181

7.1 Summary of ERRORS and Messages..................................................................................181

7.1.1 Summary of CME ERRORS related to GSM 07.07 ..............................................................181

7.1.2 Summary of CMS ERRORS related to GSM 07.05 ..............................................................183

7.1.3 Summary of Unsolicited Result Codes (URC) ......................................................................185

7.1.4 Result codes .........................................................................................................................187

7.1.5 Cause Location ID for the extended error report (AT+CEER) ..............................................187

7.1.6 GSM release cause for L3 Radio Resource (RR) (AT+CEER) ...........................................188

7.1.7 SIEMENS release cause for L3 Radio Resource (RR) (AT+CEER) ...................................188

7.1.8 GSM release cause for Mobility Management (MM) (AT+CEER) ........................................189

7.1.9 SIEMENS release cause for L3 Mobility Management (MM) (AT+CEER) ...........................189

7.1.10 GSM release cause for L3 Call Control (CC) (AT+CEER) ...................................................190

7.1.11 SIEMENS release cause for L3 Call Control (CC) and Mobile Station Manager (MSM)

(AT+CEER) ...........................................................................................................................191

7.1.12 SIEMENS release cause for L3 Advice of Charge (AOC) (AT+CEER) ...............................192

7.1.13 GSM Release cause for Supplementary Service call (AT+CEER).......................................192

7.1.14 SIEMENS release cause for Call-related Supplementary Services (CRSS) (AT+CEER)...193

7.2 Summary of PIN requiring AT Commands............................................................................194

7.3 AT commands available before entering the SIM PIN..........................................................196

7.4 Standard GSM service codes ...............................................................................................198

7.4.1 Additional notes on ^SCCFC, ^SCCWA, ^SCLCK ...............................................................200

7.5 GSM and UCS2 alphabet tables...........................................................................................202

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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 TC3x-ATC-01-V03.10=> TC3x5-ATC-01-04.00

Chapter Page AT command What is new

1.5 13 Character sets Chapter revised and associated character set tables in Chapter 7.5 updated.

1.6 14 Flow control How to use flow control.

1.4.2 12 Any command Maximum length of command line buffer added. Note regarding on sequential order of concatenated commands added.

2.3 16 AT\Qn Further details added: Using RTS/CTS handshake. Restoring AT\Q settings.

2.21 28 ATS2 Command description added.

4.2 58f AT+CALA Statement regarding the URC +CALA <text> revised: If autobauding is active neither the URC +CALA nor the individual <text> will appear.

4.6 and

4.6.1

4.18

4.18.3

4.24.1 87 AT+CMUX Fax specific AT commands are not usable.

4.31.1 99 AT+CPIN Timing algorithm of incorrect password corrected

4.42 114 AT+CSQ Note added: Realistic BER values can be obtained

4.5 63 AT+CBST Command syntax corrected: Parameter <speed> is

4.21 83 AT+CLVL Further notes regarding the usage of AT+CLVL and

4.23 85 AT+CMUT Further notes regarding the usage of AT+MUT and

4.39 111 AT+CRSM Chapter revised.

5.4

5.2

5.10 134 AT+CNMI Note regarding AT^SSCONF added.

5.7 130 AT+CMGW Parameter <length> corrected (only required for PDU,

64f 65 75

122 121

AT+CCFC New <class> parameters added.

Further examples added.

AT+CLCK New <class> parameters added.

Under parameter “PS” lock, the following statement has been removed: “ME may remember numbers of previously used cards.”

Further examples for call barring added.

AT\Q3 (hardware flow control) is recommended. Minimum bit rate set with AT+IPR: 4.8 kbps

only if there is a call in progress.

mandatory.

AT^SNFV added.

AT^SNFM added.

AT+CMGL AT+CMGR

Note regarding AT^SSCONF added.

Note regarding the handling of Class 0 short messages added.

not for text mode). Result code after failure of storing a message to the

SIM card (ME returns OK). Statement about sending e-mails via SMS corrected:

If not recognized by provider, @ may be replaced with “*”.

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6.2 144ff AT^MONI Examples on page 144 updated. <chann> and <rs> explained in greater detail References for 3GPP TS 05.05 and 05.08 added 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 PWR and RXLev of the ‘Serving Cell’ part will not be updated.

Statement regarding RING line revised. Statement regarding different values of identical cell

monitoring parameters (used for AT^MONI, AT^MONP and AT^SMONC) added.

6.3 146 At^MONP <chann> and <rs> explained in greater detail Notes modified: During a connection new neighbour

cells can be added, but their parameters C1 and C2 will be updated after the call.

Statement regarding RING line revised.

6.7 152 AT^SCKS Notes regarding empty SIM card tray corrected.

6.13 157 AT^SLCK New <class> parameters added.

6.17 161 AT^SMONC New AT command: Cell monitoring

6.25 166 AT^SNFPT New AT command: Switch on / off Call Progress tones

6.20, 6.22,

163ff AT^SNF… All Chapters revised.

6.24 – 6.28

6.37 177 AT^SSCONF New AT command: Configuring recipient address parameters in SMS result codes and in +CDS URCs.

6.38 178 AT^SSDA New AT command: Set display availability

7.1.2 183f CMS errors List of codes revised: Deleted unnecessary codes. Note and example added: Mapping of CME and CMS

errors if SIM PIN authentication has not been done.

7.1.4 187 Result codes “Connect 14400/RLP” added.

7.1.5 187 Location ID for

List of codes revised: Deleted unnecessary codes.

AT+CEER

7.1.11 191 Release cause

for call control

7.4

7.4.1

198 200

*# codes Abbreviations explained in greater detail.

Notification 300 and note regarding Location ID added.

Further examples added.

7.3 196 AT+VTS Added to List of PIN1 independent AT commands

"AT Command Set" Version TC3x-ATC-01-V03.00=> TC3x5-ATC-01-03.10

Chapter Page AT command What is new

1.4.2 12 Any command

AT+IPR

Maximum length of command line buffer added. To be used standalone.

2.13 25 ATI[value] Only value 9 supported

2.37 35 AT&S <value>2 removed

2.20 27 ATS0 Notes added

2.26 30 ATS7 Notes added

2.46 41 AT+IPR Recommendation added: To be used standalone.

2.46.1 42 AT+IPR List of bit rates detectable in autobaud mode

3 43 Fax commands Note added: Autobauding recommended when using

standard PC Fax programs

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4.2 58 AT+CALA Alarm mode not applicable to TC35 Terminal. RTC initialization after wake-up into Alarm mode

described.

4.5 63 AT+CBST Transmission rate 14400 bps now supported.

4.6 64 AT+CCFC Description revised, examples added

4.7 67 AT+CCLK RTC initialization after wake-up into Alarm mode described

4.9 69 AT+CFUN Chapter revised

4.15 73 AT+CHUP Note added: AT+CHUP implemented like ATH

4.18 75 AT+CLCK Description revised, examples for phone security lock types and call barring added

4.22 84 AT+CMEE Setting not saved when ME is powered down

4.24 86 AT-CMUX Overview on Multiplex mode updated

4.24.1 87 AT+CMUX Restrictions on Multiplex mode updated

4.26 90 AT+COPS Chapter revised

4.28 93 AT+CPBR Description revised, examples added

4.31 / 4.31.1 96 / 99 AT+CPIN Description revised. Summary of actions to be taken after authentication failure

4.32 101 AT+CPIN2 Description revised, examples added

4.34 104 AT+CPWD Description revised, examples added

4.37 108 AT+CREG Description revised, examples added

5.15 141 AT+CSMP Command syntax corrected, first parameter mandatory

6.5 148 AT^SBC Default setting of <current> described Automatic shutdown explained in more detail

6.7 152 AT^SCKS URC not stored when ME is powered down

6.19 162 AT^M20 Description revised

7.1.5- 7.1.14 181 - 193 Several AT+CEER location Ids and release causes added

7.1.3 185 URCs Further explanations relating to URCs

7.2 / 7.3 194/196 Usability of AT commands with or without PIN authentication: Both lists

updated

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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

TC35 Module TC37 Module TC35 Terminal

The AT commands detailed in this document are generally supported by all products. Where differences occur, they are noted in the chapter that refers to the command. In the present version, the only exceptions concern the following commands:

Table 1: Product specific use of AT commands

AT command TC35 / TC37 Modules TC35 Terminal

AT+CALA, Chapter 4.2 Alarm mode and reminder call fully

applicable

AT^SSYNC, Chapter 6.39 SYNC pin may be assigned

different functions: <mode> 0 or 1.

AT^SBC, Chapter 6.5 All functions fully applicable

Does not support Alarm mode. Please ignore any information relating to the subject.

The reminder call can be used as described.

SYNC pin supports only <mode>=1 (LED status).

Command not applicable.

1.2 Supported product versions and related documents

Please note that TC35, TC37 Modules and TC35 Terminal are using the same firmware, referred to as TC35. The present AT Command Set applies to all products based on the TC35 software version

04.00.

Related documents

[1] TC35 / TC37 Hardware Interface Description (applies to TC35 and TC37) [2] TC3x Release Notes related to TC35 software version 04.00 (applies to TC35, TC37 and TC35T) [3] TC3x Multiplexer User's Guide (applies to TC35, TC37 and TC35T) [4] Application Note 16: Updating TC35 Firmware (applies to TC35, TC37 and TC35T) [5] TC35 Terminal Hardware Interface Description (applies to TC35T) [6] TC35 MC35 Terminal User's Guide (applies to TC35T and MC35T) [7] Application Note 02: Audio Interface (applies to TC35, TC37 and TC35T)

Prior to using TC35 /TC37 or TC35T or upgrading to a new firmware release, be sure to carefully read 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, TC3x is short for the engine type and TC35T 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 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 2: 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

parameter 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.

1.4.1 Using parameters

· Default parameters are underlined throughout this document.

· Optional parameters are enclosed in square brackets. If optional parameters are omitted, the

current 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.

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AT Command Set

1.4.2 Combining AT commands on the same command line

You may enter several AT commands on the same line. This eliminates the need to type the "AT" or "at" prefix before each command. Instead, it is only needed once at the beginning of the command line. Use a semicolon as command delimiter.

The command line buffer accepts a maximum of 391 characters. If this number is exceeded none of the 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 3: Illegal combinations of AT commands

V.25ter commands With GSM 7.07 commands With

FAX commands, Prefix AT+F

Siemens commands, Prefix AT^S GSM 7.05 commands (SMS) --- To be used standalone Commands starting with AT& --- To be used standalone AT+IPR --- To be used standalone

Note: Generally, appending the same or mixed AT commands should be avoided. If nevertheless

you need to do enter several commands on the same line, note that the number of subsequent commands is limited.

1.4.3 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.

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AT Command Set

1.5 Supported character sets

The ME supports two character sets: GSM 03.38 (7 bit, also referred to as SMS alphabet) and UCS2 (16 bit, refer to ISO/IEC 10646). See Chapter 4.40 for information about selecting the character set. Character tables are provided in Chapter 7.5.

Due to the constraints described below it is recommended to prefer the USC2 alphabet in any external application.

If the GSM alphabet is selected all characters sent over the serial line are in the range from 0 ... 127.

CAUTION: GSM alphabet is not ASCII alphabet!

Several problems resulting from the use of the GSM alphabet:

1. "@" character with GSM alphabet value 0 is not printable by an ASCII terminal program (e.g. Microsoft

2. "@" character with GSM alphabet value of binary 0 will terminate any C string! This is because the \0 is defined as C string end tag. Therefore, the GSM Null character may cause problems on application level when using a ´C´-function as „strlen()“. This can be avoided if it is represented by an escape sequence as shown in Table 4. By the way, this may be the reason why even network providers often replace "@"with “@=*” in their SIM application. When sending e-mails via SMS the @ character may also be replaced with “*” as defined in GSM

03.40 (3GPP TS 23.040).

3. Other characters of the GSM alphabet are misinterpreted by an ASCII terminal program. For example, GSM "ö" (as in "Börse") is assumed to be "|" in ASCII, thus resulting in "B|rse". This is because both alphabets mean different characters with values hex. 7C or 00 and so on.

4. In addition, decimal 17 and 19 which are used as XON/XOFF control characters when software flow control is activated, are interpreted as normal characters in the GSM alphabet.

When you write characters differently coded in ASCII and GSM (e.g. Ä, Ö, Ü), you need to enter escape sequences. Such a character is translated into the corresponding GSM character value and, when output later, the GSM character value can be presented. Any ASCII terminal then will show wrong responses.

Hyperterminal®).

Table 4: 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 NULL \00 5C 30 30

CAUTION: Often, the editors of terminal programs do not recognize escape sequences. In this case, an escape sequence will be handled as normal characters. The most common workaround to this problem is to write a script which includes a decimal code instead of an escape sequence. This way you can write, for example, short messages which may contain differently coded characters.

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AT Command Set

1.6 Flow control

Flow control is essential to prevent loss of data or avoid errors when, in a data or fax call, the sending device is transferring data faster than the receiving side is ready to accept. When the receiving buffer reaches its capacity, the receiving device should be capable to cause the sending device to pause until it catches up.

There are basically two approaches to regulate data flow: software flow control and hardware flow control. The High Watermark of the input / output buffer should be set to approximately 60% of the total buffer size. The Low Watermark is recommended to be about 30%. The data flow should be stopped when the capacity rises close to the High Watermark and resumed when it drops below the Low Watermark. The time required to cause stop and go results in a hysteresis between the High and Low Watermarks.

In Multiplex mode, it is recommended to use hardware flow control. For details please refer to [3].

1.6.1 Software flow control (XON/OFF flow control)

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

1.6.2 Hardware flow control (RTS/CTS flow control)

Hardware flow control sets or resets the RTS/CTS wires. This approach is faster and more reliable, and therefore, the better choice. When the High Watermark is reached, CTS is set inactive until the transfer from the buffer has completed. When the Low Watermark is passed, CTS goes active once again.

To achieve smooth data flow, ensure that the RTS/CTS lines are present on your application platform. The application should include options to enable RTS/CTS handshake with the GSM engine. This needs to be done with the AT command AT\Q3 - it is not sufficient to set RTS/CTS handshake in the used Terminal program only.

The default setting of the GSM engine is AT\Q0 (no flow control) which must be altered to AT\Q3 (RTS/CTS hardware handshake on). The setting is stored volatile and must be restored each time after the GSM engine was switched off. For further details refer to Chapter 2.3.

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

Often, fax programs run an intialization procedure when started up. The intialization commonly includes enabling RTS/CTS hardware handshake, eliminating the need to set AT\Q3 once again. However, before setting up a CSD call, you are advised to check that RTS/CTS handshake is set.

Note: After deactivating the RTS line, the ME may still send up to 32 bytes. This can be easily

handled if the buffer of the host application is sufficiently sized, and if a hysteresis is implemented in its Rx buffer as mentioned in Chapter 1.6. A total buffer capacity of 256 bytes has been proved to work well.

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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.

TC35, TC37 and TC35T support 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 command

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. 40) A/ (and a/) cannot be used.

2.2 +++ Switch from data mode to command mode

Execute command

+++

Reference

V.25ter

Response

This command is only available during data calls. 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.

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 on-line command mode to on-line data mode: Enter ATO as described in Chapter 2.17.

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2.3 AT\Qn Flowcontrol

Execute command

AT\Q<n>

Reference

Response

Parameter

<n> 0 AT\Q0 No flow control 1 AT\Q1 XON/XOFF software flow control 2 AT\Q2 Only CTS by DCE 3 AT\Q3 RTS/CTS hardware flow control

Note

Line state refers to RS-232 levels. The setting of AT\Q is stored volatile and must be restored each time after the

GSM engine was switched off. Also, there is no way to store AT\Q to the user defined profile.

See also Chapter 1.6 for general information on flow control.

Required for the following procedures: incoming or outgoing data calls, fax calls. Often, the initialization routine of Fax programs includes enabling RTS/CTS handshake, eliminating the need to issue AT\Q3 once again.

2.4 ATA Answer a call

Execute command

ATA

Reference

V.25ter

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.

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:

When TA returns to command mode after call release:

Response if no connection:

NO CARRIER

Parameter

Note

See also AT+ATX and chapter 7.1.4 for <text>

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AT Command Set

2.5 ATD Mobile originated call to dial a number

Execute command

ATD[<n>]

[<mgsm][;]

Reference

V.25ter/GSM

07.07

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. Two different call setup options can be determined for voice calls: TA returns OK either after dialing was completed or after call has been established. The setting is made with AT^SM20 (see Chapter 6.19). In data connections, call setup always terminates when the 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

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:

If successfully connected and voice call:

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)

<;> Only required to set up voice calls. TA remains in command mode.

Note

· Before setting up a data call, check that RTS/CTS handshake is enabled. See Chapters 1.6 and 2.3.

· 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 7.1.4 for <text>.

· The *# codes can only be used with voice calls (i.e. use ´; ´) only.

· If ATD is used with a USSD command (e.g. ATD*100#;) an AT+CUSD=1 is

executed implicitly. (see AT+CUSD, pg. 116).

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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

4.28).

Execute command

ATD><mem> <n>[<mgsm>][;]

Parameter

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:

If successfully connected and voice call:

<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

dialed 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)

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AT Command Set

i Deactivates CLIR (enables presentation of own phone number

<;> Only required to set up voice calls. TA remains in command mode.

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 7.1.4 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

to called party)

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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 4.29). 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 4.28).

Execute command

ATD><n>[<mgsm>][;]

Reference

V.25ter/GSM 07.07

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.

When TA returns to command mode after call release:

If successfully connected and voice call:

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 7.1.4 for <text>.

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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][;]

Reference

V.25ter/GSM 07.07

TA attempts to set up an outgoing call to 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.

When TA returns to command mode after call release:

If successfully connected and voice call:

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 „“, pg. 11. <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 7.1.4 for <text>

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AT Command Set

2.9 ATDI Mobile originated call to dialable ISDN number <n>

Execute command

ATDI<n>[;]

Parameter

Reference

V.25ter

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

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:

If successfully connected and voice call:

<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

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AT Command Set

2.10 ATDL Redial last telephone number used

Execute command

ATDL[;]

Reference

V.25ter

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

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:

If successfully connected and voice call:

Parameter

<;> voice call

Note

In case of voice calls “;” is necessary.

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AT Command Set

2.11 ATE Enable command echo

Write command

ATE[<value>]

Reference

V.25ter

This setting determines whether or not the TA echoes characters received from TE during command state.

Response

Parameter

<value> 0 Echo mode off 1 Echo mode on

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, fax or CSD data calls.

Response

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.")

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AT Command Set

2.13 ATI Display product identification information

Execute command

ATI

Reference

V.25ter

Response

ME issues product information text

SIEMENS

REVISION TC35 x.yy xx.yy OK

Explanation of „Revision“ parameter: Version xx and variant yy of software release.

Note

2.14 ATI[value] Display additional identification information

Execute command

ATI[value]

Reference

V.25ter

Response

Delivers no specific information and simply returns OK.

Note

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AT Command Set

2.15 ATL Set monitor speaker loudness

Execute command

ATL[val]

Reference

V.25ter

Response

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

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

Execute command

ATO[n]

Reference

V.25ter

Response

ATO is the corresponding command to the +++ escape sequence described in Chapter 2.2: When you have established a data call and TA is in command mode, ATO causes the TA to resume the data connection and return to data mode.

If connection is not successfully resumed

NO CARRIER

or TA returns to data 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 mode

Note

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AT Command Set

2.18 ATQ Set result code presentation mode

Write command

ATQ[<n>]

Reference

V.25ter

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:

If <n>=1:

(none)

Parameter

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

Note

2.19 ATP Select pulse dialling

Execute command

ATP

Reference

V.25ter

Response

Note

No effect for GSM

2.20 ATS0 Set number of rings before automatically answering the call

Read command

ATS0?

Write command

ATS0=<n>

Reference

V.25ter

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

Parameter

<n> 000 disables automatic answer mode 001-255 enables automatic answering after specified number of rings

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.

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AT Command Set

2.21 ATS2 Escape code sequence

Read command

ATS2?

Response

S2 determines the decimal value of the ASCII character used in the escape code sequence, which serves, during a data call, to change from data to command mode. Compare Chapter 2.2.

The default value 043 is equivalent to an ASCII “+”. Please note that the value cannot be changed, and therefore, test or write commands are not supported.

Reference

V.25ter

Note

2.22 ATS3 Write command line termination character

Read command

ATS3?

Write command

ATS3=<n>

Parameter

Reference

V.25ter

Response

<n> OK

This parameter setting determines the character recognized by TA to terminate an incoming command line.

Response

<n> 000-013-127 command line termination character

Note

2.23 ATS4 Set response formatting character

Read command

ATS4?

Write command

ATS4=<n>

Parameter

Reference

V.25ter

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Response

<n> OK

This parameter setting determines the character generated by the TA for result code and information text.

Response

<n> 000-010-127 response formatting character.

Note

AT Command Set

2.24 ATS5 Write command line editing character

Read command

ATS5?

Write command

ATS5=<n>

Parameter

Reference

V.25ter

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

<n> 000-008-127 command line editing character

Note

2.25 ATS6 Set pause before blind dialling

Read command

ATS6?

Write command

ATS6=<n>

Parameter

Reference

V.25ter

Response

<n> OK

No effect for GSM

Response

<n> 000-255 number of seconds to wait before blind dialling.

Note

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AT Command Set

2.26 ATS7 Set number of seconds to wait for connection completion

Read command

ATS7?

Write command

ATS7=<n>

Parameter

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

<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 maximum 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.

2.27 ATS8 Set number of seconds to wait for comma dial modifier

Read command

ATS8?

Write command

ATS8=<n>

Reference

V.25ter

Response

<n> OK

No effect for GSM

Response

Note

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2.28 ATS10 Set disconnect delay after indicating the absence of data carrier

Read command

ATS10?

Write command

ATS10=<n>

Parameter

Reference

V.25ter

Response

<n> OK

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

<n> 001-002-254 number of tenths of seconds of delay

Note

2.29 ATS18 Extended error report

Test command

ATS18?

Execute command

ATS18=<n>

Reference

Siemens

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 7.1.5). <reason> Reason for last call release as number code (see subclause

7.1.5).

Note

This command works for data calls only. For voice calls please use AT+CEER.

2.30 ATT Select tone dialling

Execute command

ATT

Reference

V.25ter

Response

Note

No effect for GSM

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2.31 ATV Set result code format mode

Write command

ATV[<value>]

Reference

V.25ter

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

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>

Note

In case of using the command without parameter <value> will be set to 0. Information responses described in chapter 7 (verbose code and numeric code).

2.32 ATX Set CONNECT result code format and call monitoring

Write command

ATX[<value>]

Reference

V.25ter

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.

Parameter

<value>

0 CONNECT result code only returned, dial tone and busy

detection are both disabled

1 CONNECT<text> result code only returned, dial tone and busy

detection are both disabled

2 CONNECT<text> result code returned, dial tone detection is

enabled, busy detection is disabled

3 CONNECT<text> result code returned, dial tone detection is

disabled, busy detection is enabled

4 CONNECT<text> result code returned, dial tone and busy

detection are both enabled

Note

Related <text> see chapter 7.1.4.

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2.33 ATZ Set all current parameters to user defined profile

Execute command

ATZ[<value>]

Reference

V.25ter

Response

TA sets all current parameters to the user profile stored with AT&W (see Chapter

2.39 on page 37). If a connection is in progress, it will be terminated. 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.

Parameter

<value> 0 Reset to user profile

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 2.36 for details on AT&F.

2.34 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.

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.

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2.35 AT&D Set circuit Data Terminal Ready (DTR) function mode

Write command

AT&D[<value>]

Reference

V.25ter

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.

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.

Note

Line state refers to RS-232 levels.

2.36 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.

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

· 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 2.39 for AT&W and Chapter 2.33 for ATZ.

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2.37 AT&S Set circuit Data Set Ready (DSR) function mode

Write command

AT&S<value>

Parameter

Reference V.25ter

Response

This parameter determines how the TA sets circuit 107 (DSR) depending on the communication state of the TA interfacing TE.

<value> 0 DSR always on. 1 TA in command mode: DSR is OFF. TA in data mode: DSR is ON.

Note

Line state refers to RS-232 levels.

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2.38 AT&V Display current configuration

Execute command

AT&V[<n>]

without Multiplex mode or configuration on channel 1 if Multiplex mode is enabled

Logical channels 2 and 3 (Multiplex mode enabled)

Reference

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 (see AT+CPIN, pg. 95) PIN not entered Configuration

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"

+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"

Note: Parameter values and order are subject to change.

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

+ILRR: 0

+IPR: 19200

+CMEE: 0

^SCKS: 0,1

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2.39 AT&W Store current configuration to user defined profile

Execute command

AT&W[<n>]

Reference

V.25ter

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

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 2.33 for details on ATZ and Chapter

2.36 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.)

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2.40 AT+GCAP Request complete TA capabilities list

Test command

AT+GCAP=?

Execute command

AT+GCAP

Reference

V.25ter

Response

Parameter

Response

TA reports a list of additional capabilities.

+GCAP: <name>

Parameter

<name> e.g.: +CGSM,+FCLASS

Note

+CGSM: The response text shows which GSM commands of the ETSI standard are supported.

2.41 AT+GMI Request manufacturer identification

Test command

AT+GMI=?

Execute command

AT+GMI

Reference

V.25ter

Response

TA reports information to identify the manufacturer.

SIEMENS

Note

See also ”AT+CGMI Request manufacturer identification”.

2.42 AT+GMM Request TA model identification

Test command

AT+GMM=?

Execute command

AT+GMM

Reference

V.25ter

Response

TA reports one or more lines of information text which permit the user to identify the specific model of device.

TC35

Note

See also ”AT+CGMM Request model identification”.

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2.43 AT+GMR Request TA revision identification of software status

Test command

AT+GMR=?

Execute command

AT+GMR

Reference

V.25ter

Response

TA returns product software version identification text.

REVISION x.yy OK

x.yy Version x and variant yy of software release.

Note

See also AT+CGMR Request revision identification of software status

2.44 AT+GSN Request TA serial number identification(IMEI)

Test command

AT+GSN=?

Execute command

AT+GSN

Parameter

Reference

V.25ter

Response

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

<sn>

<sn> IMEI of the telephone(International Mobile station Equipment Identity)

Note

The serial number (IMEI) varies for every individual ME device.

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2.45 AT+ILRR Set TE-TA local rate reporting

Test command

AT+ILRR=?

Read command

AT+ILRR?

Write command

AT+ILRR= <value>

Intermediate result code

Reference

V.25ter

Example

Response

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

Parameter

See write command

Response

+ILRR: <value> OK

Parameter

See write command

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

Parameter

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

+ILLR:<rate>

Parameter

<rate> port rate setting in bit per second 0 (Autobauding, see Chapter 2.46.1) 300 600 1200 2400 4800 9600 14400 19200 28800 38400 57600 115200

Note

ATD030112233445 +ILRR: 57600 CONNECT 9600/RLP

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2.46 AT+IPR Set fixed local rate

Test command

AT+IPR=?

Read command

AT+IPR?

Write command

AT+IPR=<rate>

Reference

V.25ter

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

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 2.46.1).

Response

OK or if error is related to ME functionality: ERROR / +CME ERROR: <err>

Parameter

<rate> bit rate per second 0 (Autobauding, see Chapter 2.46.1)

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 1.4.2.

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· 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 commands 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.

2.46.1 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 2.46.

· See also AT+ILRR Set TE-TA local rate reporting , pg. 39

Autobauding and multiplex mode

If autobauding is active you cannot switch to multiplex mode (see +CMUX, pg. 86). Vice versa, when you run the multiplex mode, the write command AT+IPR=<rate> cannot be used.

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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. 45).

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

C C

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

Note: Be aware that there is a difference between Service Classes 2 and 2.0! Only the first is applicable to the ME.

e.g. TIA/EIA-602 or ITU V.25ter

3.1 AT+FBADLIN Bad Line Threshold

Read command

AT+FBADLIN?

Write command

AT+FBADLIN= <badlin>

Reference

EIA PN-2388

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

If error is related to ME functionality:

ERROR

Parameter

<badlin> 0 – 10 – 255 bad lines

Note

Used for Fax class 2 only

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3.2 AT+FBADMUL Error Threshold Multiplier

Read command

AT+FBADMUL?

Write command

AT+FBADMUL= <n>

Reference

EIA PN-2388

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

If error is related to ME functionality:

ERROR

Parameter

<n> 0 – 20 – 255

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>

Reference

EIA PN-2388

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. 45.

Response

(list of supported bit order modes <bor>s)

Parameter

See write command

Response

<bor> OK

Parameter

See write command

Response

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.

Note

Used for Fax class 2 only

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3.4 AT+FCIG Query or set the Local polling id

Test command

AT+FCIG =?

Read command

AT+FCIG?

Write command

AT+FCIG =<id>

Reference

EIA PN-2388

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

Response

Parameter

<id> Local Polling ID string, max. length and possible content as reported

by test command. Default value is empty string (“”).

Note

See also “AT+FLID Query or set the Local Id setting capabilities”, pg. 51. 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>

Reference

EIA/TIA-592-A

See introduction to fax commands, pg. 43. 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

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)

Note

Using Error Correcting Mode (ECM) when sending FAXes over GSM should be avoided.

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3.6 AT+FCQ Copy Quality Checking

Test command

AT+FCQ =?

Read command

AT+FCQ?

Write command

AT+FCQ =<cq>

Reference

EIA PN-2388

This command controls Copy Quality checking when receiving a fax.

Response

(list of supported copy quality checking <cq>s)

Parameter

See write command

Response

<cq> OK

Parameter

See write command

Response

Parameter

<cq> 0 No copy quality checking. The ME will generate Copy

Quality 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

Note

Used for for Faxclass 2 only.

3.7 AT+FCR Capability to receive

Write command

AT+FCR=<cr>

Reference

EIA PN-2388

Response

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.

Note

Used for Faxclass 2 only

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3.8 AT+FDCC Query or set capabilities

Test command

AT+FDCC =?

Read command

AT+FDCC?

Write command

AT+FDCC=<VR>, <BR>,<WD>,<LN>, <DF>,<EC>,<BF>, <ST>

Reference

EIA PN-2388

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)

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. 49

Response

<dcc> OK

Parameter

See write command

Response

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. 49

Note

Used for Faxclass 2 only

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3.9 AT+FDFFC Data Compression Format Conversion

Test command

AT+FDFFC=?

Read command

AT+FDFFC?

Write command

AT+FDFFC =<df>

Reference

EIA PN-2388

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

Response

<df> OK

Parameter

See write command

Response

Parameter

<df> 0 Mismatch checking is always disabled. The controlling

application has to check the +FDCS: DF subparameter and transfer matching data.

Note

Used for Fax Class 2 only

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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

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) 1 5 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

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AT Command Set

3.11 AT+FDR Begin or continue phase C data reception

Execute command

AT+FDR

Reference

EIA PN-2388

The +FDR command initiates transition to Phase C data reception.

Response

CONNECT

If error is related to ME functionality:

ERROR

Note

Used for Faxclass 2 only

3.12 AT+FDT Data Transmission

Execute command

AT+FDT

Write command

AT+FDT =<dt>

Reference

EIA PN-2388

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

Note

Used for Faxclass 2 only

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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

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

This command causes the TA to terminate the session in an orderly manner.

Response

Note

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>

Reference

EIA PN-2388

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

Parameter

<lid> Local ID string, max. length and possible content as reported by test

command. Default value is empty string (“”).

Note

See also “AT+FCIG Query or set the Local polling id ”, pg. 44. Used for Faxclass 2 only

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AT Command Set

3.16 AT+FMDL Identify Product Model

Read command

AT+FMDL?

Reference

Siemens

Send the model identification to the TA

Response

Gipsy Soft Protocolstack

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

Parameter

<opt> 0 non-standard

1 standard

Note

Used for Fax class 2 only

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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

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

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

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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

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

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AT Command Set

3.25 AT+FTM Transmit Data

Test command

AT+FTM=?

Write command

AT+FTM=<mod>

Reference

TIA/EIA-578

Response

(List of supported modulation modes) OK

Parameter

See write command

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

Note

Used for Fax class 1 only

3.26 AT+FTS Stop Transmission and Wait

Write command

AT+FTS=<time>

Reference

TIA/EIA-578

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

Note

Used for Fax class 1 only

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AT Command Set

3.27 AT+FVRFC Vertical resolution format conversion

Test command

AT+FVRFC =?

Read command

AT+FVRFC?

Write command

AT+FVRFC =<vrfc>

Reference

EIA PN-2388

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

Response

<vrfc> OK

Parameter

See write command

Response

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

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

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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=?

Read command

AT+CACM?

Write command

AT+CACM= [<passwd>]

Reference

GSM 07.07

Response

Parameter

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

format (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.

If error is related to ME functionality:

+CME ERROR: <err>

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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 TC35, TC37 and TC35 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.

159). 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 TC35 / TC37 modules. TC35 Terminal does not

support the Alarm mode.

Response

If setting fails: +CME ERROR: <err> Refer Chapter 7.1.1, pg. 181, for <err> values.

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AT Command Set

Unsolicited result code

Reference

GSM 07.07

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. 159). 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).

<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:

^SYSSTART ALARM MODE

+CALA: <text>

If autobauding is active (AT+IPR=0) the URCs ^SYSSTART 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 7.5.

· 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. 67. 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 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 ^SYSSTART has been output).

· Please consider when using multiplex mode (+CMUX, pg. 86):

- 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

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AT Command Set

Examples

alarm time is possible for all logical channels.

- 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.

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=?

Read command

AT+CAMM?

Write command

AT+CAMM= [<acmax>[,<passwd>]]

Reference

GSM 07.07

Response OK Parameter

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.

If error is related to ME functionality:

+CME ERROR: <err>

Parameter

<acmmax> string type; three bytes of the max. ACM value in

hexadecimal format (e.g. “00001E” indicates decimal value

30) 000000 disable ACMmax feature 000001-FFFFFF

<passwd> string type SIM PIN2

Note

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AT Command Set

4.4 AT+CAOC Advice of Charge information

Test command

AT+CAOC=?

Read command

AT+CAOC?

Write command

AT+CAOC=<mode>

Execute command

AT+CAOC

Reference

GSM 07.07

Response

+CAOC: (list of supported <mode>s) OK

Parameter

See write command

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

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

Note

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AT Command Set

4.5 AT+CBST Select bearer service type

Test command

AT+CBST=?

Read command

AT+CBST?

Write command

AT+CBST= <speed>[,<name> [,<ce>]]

Reference

GSM 07.07

Response

+CBST: (list of supported <speed>s),(list of supported <name>s),(list of supported <ce>s) OK

Parameter

See write command

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 4.41).

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.

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.

· In multiplex mode (AT+CMUX Enter multiplex mode, pg. 86), the bearer capabilities using 14400 bps (14,75) are not available. Incoming calls are negotiated at 9600bps. If multiplex mode is active, the bearer capability automatically switches to +CBST=7,0,1.

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AT Command Set

4.6 AT+CCFC Call forwarding number and conditions control

Test command

AT+CCFC=?

Write command

AT+CCFC=<reas>, <mode>[,<number> [,<type>[,<class> [,<time>]]]]

Response

+CCFC: (list/range of supported <reas>s) OK

Parameter

See execute command

Response

TA controls the call forwarding supplementary service. Registration, erasure, activation, deactivation and status query are supported.

If <mode> ¹ 2 and command successful:

If <mode> = 2, <reas> ¹ 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 4 erase <number> and deactivate call forwarding

<number> string type phone number of forwarding address in format

specified 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

includes international access code character “+”, otherwise 129

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AT Command Set

Reference

GSM 07.07, GSM 02.04, GSM 02.82

<class> integer or sum of integers each representing a <class> of

information:

1 voice 2 data 4 fax 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 1 active

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 ATD command followed by *'# codes to check the status of these two reasons. See Chapter 7.4 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 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 4.18.3).

Example 1

Example 2

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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.

To query the status of CFU without specifying <class>:

at+ccfc=0,2 +CCFC: 1,1,"+493012345678",145 +CCFC: 1,2,"+493012345678",145

AT Command Set

Example 3

Example 4

Example 5

Example 6

+CCFC: 1,4,"+493012345678",145 OK

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

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=?

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. 162).

· <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. 58.

· 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 ^SYSSTART has been output).

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AT Command Set

4.8 AT+CEER Extended error report

Test command

AT+CEER=?

Execute command

AT+CEER

Reference

GSM 07.07

Response

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 7.1.5)

<reason> Reason for last call release as number code (see subclause

7.1.5)

<ss_release> Release cause for last Supplementary Service Call

(see subclause 7.1.13)

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.

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AT Command Set

4.9 AT+CFUN Set phone functionality

The AT+CFUN command serves to query or select the level of functionality <fun> of the ME. Level "full functionality" is where high current is drawn, depending on the operating mode, e.g. IDLE, TALK or DATA mode. "Minimum functionality" is where minimum power is drawn, referred to as SLEEP mode.

For detailed information on the various operating modes and the current consumption please see the "Hardware Interface Description" supplied with your GSM engine.

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

Response

If error is related to ME functionality:

+CME ERROR: <err>

Parameter

<fun> 0 Minimum functionality (SLEEP mode)

AT+CFUN=0 disconnects any call in progress. The SLEEP mode starts after remaining network activities are terminated. While SLEEP mode is in effect, the AT interface is not accessible. Consequently, once you have issued AT+CFUN=0, do not send further characters. Otherwise these characters remain in the input buffer and may delay the output of an URC (see pg. 185, e.g. “RING”).

1 Full functionality (IDLE, TALK, DATA, mode)

<rst> 0 The <rst> parameter can only be used if +CFUN=1. 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 2.46.1

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AT Command Set

Reference

GSM 07.07

Example 1

Example 2

Example 3

Note

· To check that ME has entered the SLEEP mode, it is recommended to measure the supply current. Depending on the configuration of the SYNC pin, the SLEEP mode may also be indicated by a status LED (see „AT^SSYNC Configure SYNC Pin“, pg. 177).

· When in SLEEP mode, the following events may cause the ME to wake up: incoming call, Real Time Clock alarm, falling edge of RTS (RS-232, 2.65V CMOS level) and receipt of an unsolicited result code (URC, see chapter

7.1.3).

· 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 SLEEP mode. Consequently, the read command is only useful when the ME is set to full functionality.

To set the ME to 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 7.1.3.

After this, you may want to verify the operating status:

AT+CFUN? +CFUN: 1 Indicates that ME has entered full functionality mode.

To reset and restart the ME:

AT+CFUN=1,1 or alternatively, AT+CFUN=0,1 OK ^SYSSTART Note that ^SYSSTART appears only if AT+IPR¹0. 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

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AT Command Set

4.10 AT+CGMI Request manufacturer identification

Test command

AT+CGMI=?

Execute command

AT+CGMI

Reference

GSM 07.07

Response

TA returns manufacturer identification text.

SIEMENS OK

Note

See also ”AT+GMI Request manufacturer identification”.

4.11 AT+CGMM Request model identification

Test command

AT+CGMM=?

Execute command

AT+CGMM

Reference

GSM 07.07

Response

TA returns product model identification text.

TC35 OK

Note

See also ”AT+GMM Request TA model identification”.

4.12 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 x.yy OK

x.yy Version x and variant yy of software release

Note

See also AT+GMR Request TA revision identification of software status

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AT Command Set

4.13 AT+CGSN Request product serial number identification (IMEI) identical to GSN

Test command

AT+CGSN=?

Execute command

AT+CGSN

Reference

GSM 07.07

Response

TA returns identification text for determination of the individual ME.

<sn> OK

Parameter

<sn> IMEI of the telephone (International Mobile station Equipment Identity)

Note

See also ”AT+GSN Request TA serial number identification”.

4.14 AT+CHLD Call hold and multiparty

Test command

AT+CHLD=?

Execute command

AT+CHLD=[<n>]

Reference

GSM 07.07

Response

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

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).

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

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.

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AT Command Set

4.15 AT+CHUP Hang up call

Test command

AT+CHUP=?

Execute command

AT+CHUP

Reference

GSM 07.07

Response

Cancels all active and held calls.

Response

OK/ERROR

Note

AT+CHUP implements the same behaviour as ATH (see Chapter 2.12).

4.16 AT+CIMI Request international mobile subscriber identity

Test command

AT+CIMI=?

Execute command

AT+CIMI

Reference

GSM 07.07

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)

Note

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AT Command Set

4.17 AT+CLCC List current calls of ME

Test command

AT+CLCC=?

Execute command

AT+CLCC

Reference

GSM 07.07

Response

Parameters

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: 0 active 1 held 2 dialing (MO call) 3 alerting (MO call) 4 incoming (MT call) 5 waiting (MT call) <mode> bearer/teleservice: 0 voice 1 data 2 fax 9 unknown <mpty> 0 call is not one of multiparty (conference) call parties 1 call is one of multiparty (conference) call parties

<number> 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>

corresponding to the entry found in phonebook; used character

set should be the one selected with command Select TE

Character Set +CSCS

Note

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AT Command Set

4.18 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> ¹ 2 and command is successful

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-

“PS” Phone locked to SIM card. ME requests password when other

“FD” SIM fixed dialling memory: If the mobile is locked to "FD", only

"CS" Keypad lock (not supported since keypad cannot be directly

Note: Primarily intended for the client to take safety precautions, "SC",

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 4.18.2 for further explanations.

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.

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>.

connected to the GSM engine)

"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 4.31.1 and examples below for further details.

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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 4.31 and 4.31.1 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

subscribe 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 1 lock 2 query status

<passwd> password

See Chapters 4.34 and 6.36 for instructions of how to specify passwords.

<class> integer or sum of integers each representing a <class> of information: 1 voice

2 data 4 fax 8 short message service 16 data circuit sync

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AT Command Set

Reference

GSM 07.07

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 4.18.3 for the correct handling of class numbers.

<status> 0 off 1 on

Note

*# codes sent with ATD cannot be used to enter the Master Phone Code.

4.18.1 Examples: Enabling / disabling PIN 1 authentication

Example 1

Example 2

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

enable 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.

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.

4.18.2 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

Example 3

Example 4

Example 5

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.

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

Example 6

Example 7

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

4.31.1).

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.

Attempt to unblock the "PS" lock using an invalid Master Phone Code: Due to the timing algorithm explained in Chapter 4.31.1 the intervals between each attempt are getting longer. See also AT^SPIC in Chapter 6.32.

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.

AT+CPWD=PS,12345678,3333 Deactivates the present "PS" lock

and sets a new "PS" lock.

4.18.3 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

Example 2

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 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

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 +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

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AT Command Set

Example 3

Example 4

Example 5

Example 6

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

+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

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,2,0000,255 +CLCK: 0,2 +CLCK: 0,1 +CLCK: 0,8 +CLCK: 0,4 +CLCK: 0,32 +CLCK: 0,16 +CLCK: 0,128 +CLCK: 0,64 OK

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AT Command Set

4.19 AT+CLIP Calling line identification presentation

Test command

AT+CLIP=?

Read command

AT+CLIP?

Write command

AT+CLIP=<n>

Unsolicited result code

Reference

GSM 07.07

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

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

includes international access code character “+”, otherwise 129.

0 CLI 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.

Note

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AT Command Set

4.20 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

ATD*31#<Phonenumber>[;]

ATD#31#<Phonenumber>[;]

Note:

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:

Deactivate CLIR = enable presentation of own phone number to called party

Activate CLIR = suppress presentation of own phone number to called party

<Phonenumber> = phone number of called party

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AT Command Set

4.21 AT+CLVL Loudspeaker volume level

Test command

AT+CLVL=?

Read command

AT+CLVL?

Write command

AT+CLVL=<level>

Reference

GSM 07.07

Response

+CLVL: (list of supported <level>s)OK

Response

+CLVL: <level>

OK/ERROR/+CME ERROR

Response

OK/ERROR/+CME ERROR

Parameter

<level> Loudspeaker Volume Level (0-4)

Note

· The write command can only be used in audio mode 2 – 6.

· The values of the volume steps can be specified with the parameters

<outCalibrate[0]>,...<outCalibrate[4]> of the AT^SNFO command (see Chapter 6.24).

· As an alternative to AT+CLVL, you can use AT^SNFV as described in Chapter 6.27. The parameter <level> is identical with <outStep> used in the AT^SNFV command.

· Any change to <level> (or <outStep>) takes effect in audio modes 2 to

6. That is, when you change <level> (or <outStep>) and then select another mode with AT^SNFS, the same value will be applied. The only exception is audio mode 1 which is fixed to <level>=4 (or <outStep>=4).

· The value of <level> (or <outStep> is stored non-volatile when the ME is powered down with AT^SMSO or reset with AT+CFUN=1,1. Any other values changed with AT^SNFO need to be saved with AT^SNFW for use after restart.

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AT Command Set

4.22 AT+CMEE Report mobile equipment error

Test command

AT+CMEE=?

Read command

AT+CMEE?

Write command

AT+CMEE=<n>

Example

Reference

GSM 07.07

Response

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

Parameter

See write command

Response

+CMEE: <n> OK

Parameter

See write command

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

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

Note

· The possible error result codes are listed in chapter 7

· In multiplex mode (see “AT+CMUX Enter multiplex mode”, pg. 86) 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

4.23 AT+CMUT Mute control

Test command

AT+CMUT=?

Read command

AT+CMUT?

Write command

AT+CMUT=<n>

Reference

GSM 07.07

Response

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

Response

+CMUT: <n>

OK/ERROR/+CME ERROR

Response

OK/ERROR/+CME ERROR

Parameter

<n>: 0 mute off 1 mute on

Note

This command can be used in all audio modes (1 to 6) and during a voice call only. See AT^SNFS in Chapter 6.26 for more details on the various audio modes.

Users should be aware that when they switch back and forth between different audio modes the value of <mute> does not change. This means that the status of mute operaton is retained until explicitly changed.

As alternative, you can use the AT^SNFM command described in Chapter 6.22.

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AT Command Set

4.24 AT+CMUX Enter multiplex mode

TC35 / TC37 and TC35 Terminal support 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 or fax 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 GSM engine and the customer application must contain Mux components which communicate over the Multiplexer Protocol. In the GSM engine, the Mux/MP software is already incorporated. The customer application should either integrate the TC35 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 [3] which provides to a detailed description of the Multiplex functionality implemented in TC35 / TC37 and TC35 Terminal and step-by-step instructions of how to install and configure the MUX mode. The source files of the TC35 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>

Reference

GSM 07.07

Response

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

Response

+CMUX: <mode> OK

If error is related to ME functionality:

+CME ERROR: <err>

Response

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)

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

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AT Command Set

returns 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 with AT ^SMSO (Chapter 6.18, pg.

159). It has to be reestablished after power-on.

4.24.1 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 [3].

Data 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+F.... (Fax commands) not usable not usable

AT&C as described not usable AT&D as described not usable AT&F as described data call parameters 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) ATS4 1) ATS5 1)

as described not usable as described as described as described as described as described not usable

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Command Behaviour on channel 1 Differences on channel 2+3

ATS6 1) ATS7 1) ATS8 1) ATS10 1) ATS18 1)

as described not usable as described not usable as described not usable as described not usable as described not usable

AT\Q<n> as described not usable ATZ as described data call parameters not changed

)

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. 27). The other registers are read-only and for internal use only!

Table 7: Summary of AT commands with different behaviour in Multiplex mode

Command Description Chapter

AT\Q<n> It is recommended to use hardware flow control (AT\Q3). XON/XOFF

2.3

flow control (AT\Q1) is not supported in Multiplex mode

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 2.38

AT+IPR Before you start Multiplex mode, it is recommended to set the ME to

2.46 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.

Minimum bit rate in Multiplex mode: 4.8 kbps

AT+IPR=0 Autobauding is not compatible with Multiplex mode. It is neither

2.46.1 possible 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+CBST 14400 bps bearer capabilities are not available in Multiplex mode.

4.5 Incoming calls are negotiated at 9600bps. If multiplex mode is active, the bearer capability automatically switches to +CBST=7,0,1.

AT+CMEE Presentation mode can be separately configured for each channel. 4.22

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

5.10 parameter 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.

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AT Command Set

4.25 AT+COPN Read operator names

Test command

AT+COPN=?

Execute command

AT+COPN

Reference

GSM 07.07

Response

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

identification number

<alphan> string type; operator in long alphanumeric format; can contain

up to 16 characters

Note

Siemens TC37 Module, TC35 Module, TC35 Terminal At Command Reference

Specifications and Main Features

Frequently Asked Questions

User Manual

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