Siemens Explore GSM Modem and Module Interfaces for the M1 Series

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GSM Module M1

Description of the interfaces

The GSM Module M1 has interfaces for the power supply, for control and data trans- mission, for an external antenna and for a SIM card as well as an LED that indicates operating statuses. These interfaces will be described below. For a detailed description including pin assignment, see the section entitled “Technical data”.

SIM card

The GSM Module M1 must have a SIM card to operate in the GSM network. To install this card, press the yellow button to eject the carrier and insert the SIM in the carrier. Then push the carrier into the housing, making sure that it locks into place.

V.24 interface

The serial interface is used for controlling the GSM Module M1 as well as for data, fax and SMS transmission.

Connector:	9-pin DSUB (female) conforming to DIN 41652
Pin assignment:	See the section entitled “Technical data”
Logic:	V.24 asynchronous
Baud rates:	2400 - 19200 baud, autobauding
Parity:	None
Character format:	8 data bits
Stop bits:	1
Level:	Conforming to CCITT Recommendation V.28

Hybrid connector (manufacturer-specific)

The hybrid connector contains the power supply, ignition (for switching the device on and off) and the connection for the external antenna (GSM 900 MHz antenna). It is con- nected via the cable supplied.

Pin assignment:

Meaning of pins:	See the section entitled “Technical data”.

Function LED
LED off	Device switched off – not ready
LED flashing slowly	Device switched on – ready
LED flashing rapidly	Device switched on – connection setup

For a detailed function indication, use the corresponding AT commands.

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Contents GSM Contents Technical reference section Contents GSM documentation Technical dataGeneral information GSM Module M1 Product description FeaturesInterface Hybrid connector manufacturer-specificGSM Module M1 Description of the interfaces SIM cardCable assignment Installation / startup Mounting the modulePower supply / power consumption Switching the GSM module on/offOvervoltage / undervoltage Installation / startupSetting / testing the COM interface Power consumptionATB13 Setting the GSM radio transfer rateATB7 AT+CPIN=1234 Setting up and clearing down connectionsAT+CPIN? +CPIN SIM PINAT&F TroubleshootingATH Own errors Connection cannot be set upSystem errors GSM module does not dial Incorrect characters on screenCannot receive fax Overview of AT commands General AT commands GSM AT commands GSM Overview of AT commandsSMS AT commands GSM Technical reference section AT standard AT command line prefixConnecting to your GSM module Command syntax of the AT standardAT&F0 Technical reference sectionATH ATS7?Q0E1 ATD0123456789No Carrier ErrorConnect RingOperating modes Command modeTransparent mode Escape commandSetting the transfer rate ATOn Return to transparent modeATH Go on-hook ATB ATBn Select GSM module’s operating modeATB99 Dial ATD+4989telephone number ATD Dial a telephone numberATD Valid dial stringsAT&Z0=123456789 AT%Dn Automatic dialing with DTRATD123456789 AtdlATS0=n Auto-answer mode Displaying and storing a configurationATA Answer a call Z1= Z2= Z3= AT&V Active ProfileStored Profile Telephone Numbers &Z0=Screen outputs Limits of screen outputs ATEn Command echoATQn Activate and deactivate result codes Control line options AT&Cn Data Carrier Detect DCD options ATXn Extended connect messageAT&Dn Data Terminal Ready DTR options Memory commandsData flow control ATDS=n Dial stored telephone number AT&Wn Store configurationAT&Zn=x Store telephone number AT&Z0 =AT+CXXSN = ? AT+C commands for GSMAT&Yn Configuration at power-up ATZn Load user profile+CGMM M1 AT+CGMI+CGMI Siemens AT+CGMMAT+CGSN Request product serial number ID AT+CEER Extended error reportAT+CHUP Hangup call GSM module AT+CMEE Report mobile equipment errorEnter AT+CEERAT+CREG? +CME ErrorAT+CREG? AT+CREG Network registrationAT+COPS=? EnterAT+CREG? GSM module +CREG 0,0 = not registeredAT+COPS Operator selection AT+COPS?AT+COPS=? AT+COPS?+COPS 0, 0, Operator Name AT+COPS=? Display list of available network operatorsPrivat TelekomAT+CPIN Enter PIN and query blocks AT+CPIN2 Enter PIN2 and query PIN2 blocks +CME Error Wrong Password+CPWD SC,8,PS,8, P2,8 AT+CPWD Change passwordAT+CPIN2=1234 AT+CPWD=?Receive AT+CSQ Signal qualityErrors AT+CSQ+CKPD 0123456789*#CDEISUXYZ AT+CKPD Keypad controlAT+CKPD=? AT+CKPD=?AT+CXXSN=? AT+CXXSN Single-numbering parameterization+CXXSN 0,1,2 AT+CXXSN=?AT+CXXSN=2 +CXXMOC 0,1 AT+CXXMOC=?AT+CXXMOC=1 AT+CPBS=? AT+CPBS Select phonebook memory storage+CPBS MD , SM , OW , FD +CPBR index, number length, text AT+CPBR Read phonebook entriesAT+CPBR=? AT+CPBR=?AT+CPBW Write phonebook entry AT+CBST? AT+CBST Select bearer service typeAT+CBST=? AT+CRC? AT+CRC Cellular result codeAT+CRC? AT+CRC=?AT+CLIP? AT+CLIP Calling line identification presentationAT+CLIP? AT+CLIP=?+CPAS 0 1 2 3 4 AT+CPAS Phone activity statusAT+CPAS=? AT+CPAS=?AT+FCLASS=? AT+FCLASS Select modeAT+FCLASS? AT+FCLASS=?AT+CXXCID Card identification AT+C commands for the short message service SMSAT+CXXCID=? AT+CPMS Preferred message storage AT+CSMS Select message serviceParameter command syntax Values implementedAT+CMGF Message format AT+CSCA Service center addressAT+CMGR Read message Action command syntaxIf PDU mode +CMGF=0 and command successful If PDU mode +CMGF=0 If send is successfulAT+CMGD Delete message AT+CMGW Write message to memoryAT+CNMI New message indications Value definitions AT+CMS Error message service failure result codesAT+CMGL List messages +CMGL=?AT+FDT= S-registersAT+FCR= AT+FAAAT+FBUF?AT+FBOR ATS0=3 ATSn? Read an S-registerEnterATS0?S7? ATSn=x Write to an S-registerBinary and decimal values in S-registers You wish to enter the following parameter values Bit position registersDecimal input and binary storage OFF Overview of the S-registers Please noteDTR on OFF Technical reference section ABC AT&T1AT&T0 ATIn Display GSM module I-data Interface Technical data GeneralTechnical data Hybrid connector manufacturer-specific Data Technical data GSM modesFax FAX G3Etsi contact GSM documentation GSM reference documentsEuropean Telecommunications Standards Institute General information CE-Sign ServiceGeneral information