The following new change requests are taken into account in this document: none
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AT command set for S45 Siemens mobile phones and modems

2 Software interface

2.1 Overview of the supported AT command set
This section provides overviews of the supported sets of AT commands, separate for each type of command set. Table 2-1 lists all the supported GSM 07.07 AT commands in alphabetical order, and indicates the type of command as defined in the ETSI GSM 07.07 standard: 07.07 command AT+CACM AT+CALM AT+CAMM AT+CAOC AT+CBC AT+CBST AT+CCFC AT+CCLK AT+CCWA AT+CEER AT+CGACT AT+CGANS AT+CGATT AT+CGAUTO AT+CGCLASS AT+CGDATA AT+CGDCONT AT+CGEREP AT+CGMI AT+CGMM AT+CGMR AT+CGPADDR AT+CGQMIN AT+CGQREQ AT+CGREG AT+CGSMS AT+CGSN AT+CHLD AT+CHUP AT+CIMI AT+CKPD AT+CLCC AT+CLCK AT+CLIP AT+CLIR Function Accumulated call meter Alert sound mode Accumulated call meter maximum Advice of charge Battery charge Select bearer service type Call forwarding Clock Call waiting Query the reason for disconnection of last call PDP context activate or deactivate Manual response to a network request for PDP context activation GPRS attach or detach Auto response to a network request for PDP context activation GPRS mobile station class Enter data state Define PDP Context GPRS event reporting Issue manufacturer ID code Issue model ID code Output the GSM telephone version Show PDP address Quality of Service Profile (Minimum acceptable) Quality of Service Profile (Requested) GPRS network registration status Select service for MO SMS messages Output the serial number (IMEI) Call hold and multiparty Terminate call Output of IMSI Keypad control List Current Calls Switch locking on and off Display telephone number of calling party Select Incognito Mode (Call Line Identification Type of command Mobile equipment control Mobile equipment control Mobile equipment control Network service Mobile equipment control Modem command Network service Mobile equipment control Network service Call control GPRS GPRS GPRS GPRS GPRS GPRS GPRS GPRS General General General GPRS GPRS GPRS GPRS GPRS General Network service Call control General General Network service Network service Network service Call control Page 25
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AT command set for S45 Siemens mobile phones and modems _________________________________________________________________________________________ Restriction) Loudspeaker volume level Expanded error messages according to GSM 07.07 Mute control Connected Line Identification Presentation Read operator names Commands concerning selection of network operator Query the telephone status Read a telephone-book entry Select a telephone book Write a telephone-book entry Enter PIN and query lock Preferred operator list Price per unit and currency table Change password to a lock Service reporting control Cellular result codes Network registration Select radio link protocol parameter for originating non-transparent data call Ringer sound level Restricted SIM access Select TE character set Output signal quality Supplementary service notifications Vibrator mode Output the serial number (IMEI) Send a DTMF tone Set duration of a DTMF tone Select wireless network

Dial the dialing string <str> with the voice utility Valid dial modifiers: I restrict AT+CLIR i suppress AT+CLIR) for next call T tone dialing P pulse dialing is ignored The finishing character ; indicates to the phone that the call is to be set up with the voice utility. Otherwise, an attempt is made to set up a data call, which the phone immediately acknowledges with ERROR. The dial command returns OK to the user immediately after starting a voice call. Other behavior like *# sequences in the dial command, and also data calls remain unchanged. See also section 2.8.3 Dial the telephone number from the current telephone book location number <n> The telephone book is selected using the AT+CPBS (or AT^SPBS) command. Dial the telephone number from the telephone book <mem> location number <n> Dial phone number x I ISDN The phone call will be made as a UDI call. An ISDN connection to a V.110 terminal adapter will be established. The data transmission speed is the same as for an analog call (2400 / 4800 / 9600 / 14400 bps). Plus: same as + character
PP ATDL ATE0 ATE1 ATH[0] ATI[n]
Dial last telephone number Deactivate command echo Activate command echo Release existing connection Modem command according to [3]:

Display product code:

2 OK, (check firmware checksum) 8 Display supported operation modes (see ATB) 9 identification of modem and mobile phone Monitor speaker loudness (modem command according to [3]) Monitor speaker mode (modem command according to [3]) Switch back to transparent mode after +++ interruption (modem command according to [3]) Display acknowledgments (responses or messages) Suppress acknowledgments (responses or messages) Write value x to S register n (modem command according to [3]) Display value of S register n (modem command according to [3]) Note: This type of mobile phone does not allow the values of all S registers to be displayed with a single command
ATL[n] ATM[n] ATO[n] ATQ0 ATQ1 ATSn=x ATSn?
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AT command set for S45 Siemens mobile phones and modems _________________________________________________________________________________________ ATV0 ATV1 ATX<n> Display acknowledgments as numbers Display acknowledgments as text Report link with CONNECT only ignore busy signal <n> can take one of the following values: 1 Report link with CONNECT plus baud rate, ignore busy signal 2 same as ATXsame as ATX, but report BUSY 4 same as ATX, t report BUSY Set to default configuration Circuit 109 (Received line signal detector / DCD) behavior AT&D[n] <n> can take one of the following values: DCD always ON DCD ON if carrier detected Circuit 108 (Data terminal ready / DTR) behavior Note: The AT&D<n> commands described below take no effect since circuit 108 is not supported in this type of mobile phone. See section 2.7 for more information on which circuit assignments are supported. 2 AT&F[0] <n> can take one of the following values: DTR ignored On DTR ON to OFF: go to online command mode, dont disconnect On DTR ON to OFF: disconnect go to command mode. Automatic answer is disabled while DTR OFF.

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2.3.3.15

AT+CREG Network registration

AT+CREG

AT+CREG=?
+CREG: (list of supported <n>s) OK/ERROR/+CME ERROR Parameter 0 Suppresses the unexpected network status messages <n> 1 Displays the unexpected network status messages 2 Enables unexpected network registration and location information messages OK/ERROR/+CME ERROR

AT+CREG?

+CREG: <n>,<stat>[,<lac>,<ci>] OK/ERROR/+CME ERROR

<n> <stat>

<lac> <ci>
See Test command Not checked in, not seeking Checked in Not checked in, but seeking a network Check-in denied by network Unknown Registered, roaming Hexadecimal 2-byte string type of location area code Hexadecimal 2-byte string type of cell ID

AT+CREG=<n>

<n> See Test command Unsolicited message +CREG: <stat>
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2.3.3.16

AT+CSSN Supplementary service notifications
Revision according to GSM 07.07 Version 5.0.0

AT+CSSN

AT+CSSN=?
+CSSN: (list of supported <n>s), (list of supported <m>s)
0 Suppresses the +CSSI messages 1 Activates the +CSSI messages 0 Suppresses the +CSSU messages 1 Activates the +CSSU messages For supported +CSSI/+CSSU messages, see section 2.4.3 below.

AT+CSSN?

+CSSN: <n>,<m>
AT+CSSN=<n>[,<m>]
Unsolicited message +CSSI: <code1> +CSSU: <code2>

<code1>

<code2>
Intermediate result code Waiting call is pending Unsolicited result code Held call was terminated
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Commands related to mobile equipment control and status
This section provides the descriptions of commands related to network service. 2.3.4.1 AT+CACM Accumulated call meter

AT+CACM

AT+CACM=?

AT+CACM?

+CACM: <acm> OK/ERROR/+CME ERROR Parameter Accumulated call meter in hexadecimal format, measured in <acm> home units; coding analogous to ACMmax on the SIM
AT+CACM=[<pa sswd>]

<passwd>

String type; usually PIN2

2.3.4.2

AT+CALM Alert sound mode

AT+CALM

AT+CALM=?
+CALM: (list of supported <mode>s) OK

AT+CALM?

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2.3.4.16

AT+CSQ Output signal quality

AT+CSQ

AT+CSQ=?
+CSQ: (list of supported <rssi>s), list of supported <ber>) OK/ERROR/+CME ERROR

<rssi>

2 - 99

<ber>

0-7 99
Reception level -113 dBm or less 111 dBm -109 to -53 dBm -51 dBm or more Unknown Bit error rate Like RXQUAL values from Table GSM 05.08 in Section 8.2.4 Unknown
+CSQ: <rssi>, <ber> OK/ERROR/+CME ERROR

<rssi> <ber>

2.3.4.17

AT+CVIB Vibrator mode

AT+CVIB

AT+CVIB=?

+CVIB: (list of supported <mode>s) OK
+CVIB: <mode> OK/ERROR/+CME ERROR

AT+CVIB=<mode>

<mode> 16
Vibrator mode disable enable vibrate then ring (not available in every model)
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Extensions of Hayes Standard commands for GPRS
This chapter describes all the extensions of the Hayes Standard commands for GPRS. Command Function
ATD*<GPRS_SC>[*[<called_address>] [*[<L2P>][*[<cid>]]]]# Request GPRS service <GPRS_SC>: GPRS Service Code a digit string (value 99) <called_address> a string that identifies the called party in the address space <L2P> a string which indicates the layer 2 protocol <cid> a digit string which specifies a particular PDP context definition. The cid has to be defined by using the AT+CGDCONT command The dial command responds with CONNECT or ERROR ATD*<GPRS_SC_IP>[*<cid>]# Request GPRS IP service <GPRS GPRS Service Code a digit string (value 98) _SC> <cid> a digit string which specifies a particular PDP context definition. The cid has to be defined by using the AT+CGDCONT command The dial command responds with CONNECT or ERROR AT0 Return to on-line data state ATS0 Automatic answer. The command may be used to turn off (n=0) and on (n>0) the automatic response to a network request for a PDP context activation. ATS3 Termination character ATS4 Response formatting character ATS5 Command line editing character

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Commands for GPRS

This section provides the descriptions of commands related to GPRS. 2.3.6.1 AT+CGACT PDP context activate or deactivate

AT+CGACT

AT+CGACT=?
+CGACT: (list of supported <state>s) OK/ERROR/+CME ERROR

<state>

indicates the state of PDP context activation deactivated activated

AT+CGACT?

+CGACT:<cid>,<state>[<CR><LF>+CGACT:<cid>,<state>.]] OK/ERROR/+CME ERROR
<cid> <state>
numeric PDP Context Identifier See Test command
AT+CGACT=[<state>[,<cid>[,<cid>[,]]]]
See Read command See Test command

2.3.6.2

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

AT+CGANS

AT+CGANS=?
+CGANS(list of supported <response>s), (list of supported <L2P>s) OK/ERROR/+CME ERROR
<response> <L2P>
the request is rejected the request is answered layer 2 protocol to be used between the TE and MT PPP
AT+CGANS=[<response>, [<L2P> ,[<cid>]]]
<response> <state> <cid>
See Test command See Test command numeric PDP Context Identifier

CONNECT/ERROR/+CME ERROR

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2.3.6.3

AT+CGATT GPRS attach or detach

AT+CGATT

AT+CGATT=?
+CGATT: (list of supported <state>s) OK/ERROR/+CME ERROR Parameter indicates the state of GPRS attachment <state> 0 detached 1 attached

AT+CGATT?

+CGATT: <state> OK/ERROR/+CME ERROR

AT+CGATT=[<state>]

2.3.6.4
AT+CGAUTO Auto response to a network request for PDP context activation

AT+CGAUTO

AT+CGAUTO=?
+CGAUTO: (list of supported <n>s) OK/ERROR/+CME ERROR

<n> 3

indicates the state of PDP context activation turn off automatic response for GPRS only turn on automatic response for GPRS only modem compatibility mode, GPRS and circuit switched calls (default)

AT+CGAUTO?

+CGAUTO: <n> OK/ERROR/+CME ERROR

AT+CGAUTO=[<n>]

AT+CPMS?

+CPMS: <mem1>,<used1>,<total1>,<mem2>,<used2>,<total2>,<mem3>,<used 3>,<total3> Parameter Memory from which messages are read and deleted <memx> <usedx> Number of messages currently in <memx> <totalx Total number of messages that can be stored in <memx> >
AT+CPMS= <mem1>[,<mem2>[,<mem3>]] <mem1> See Test command <mem2> See Test command <mem3> See Test command +CPMS: <used1>,<total1>,<used2>,<total2>,<used3>,<total3> OK/ERROR/+CMS ERROR 1) The Mobil Equipment storage "ME" has space for 25 short messages 2) The storage "MT" is an addition of the storages "ME" and "SM". If "MT" is chosen as <mem1> or <mem2> the first indices to read from, write to or delete from is the "ME" storage. The storages with index 26 or higher are associated with the "SM" storage. 3) Incoming short messages with message class 1 or 2 (see GSM 03.38) will be stored in the "ME" or "SM" storage only. Therefore, the AT^SMGO:2 indication (see AT^SMGO command) can occur without a preceding AT^SMGO:1 indication.
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2.3.9.13

AT+CSCA Address of the SMS service center

AT+CSCA AT+CSCA=?

AT+CSCA?
+CSCA:<sca>,<tosca>
<sca> <tosca>

Parameter Write command

Service-center address in string format Service-center address format Service-center address in string format Service-center address format
AT+CSCA= <sca>[,<tosca>] OK/ERROR

2.3.9.14

AT+CSCB Select cell broadcast messages

AT+CSCB

AT+CSCB=?
+CSCB: (list of supported <mode>s)
Accepts messages that are defined in <mids> and <dcss> Does not accept messages that are defined in <mids> and <dcss>

AT+FDCC

Test command AT+FDCC=?
+FDCC: (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)
VR BR WD LN DF EC BF ST Note:
Vertical Resolution Bit rate Page Width Page length Data compression Format Error Correction mode Binary File transfer mode Scan Time / line For further information see AT+FDIS

AT+FDCC?

<dcc> OK

VR BR WD LN DF EC BF ST

See Test command See Test command See Test command See Test command See Test command See Test command See Test command See Test command
AT+FDCC=<VR>,<BR>,<WD>,<LN>,<DF>,<EC>,<BF>,<ST> +FDCC: (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)
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2.3.11.9

AT+FDFFC Data Compresssion Format Conversion Used for FAX class 2 only This parameter determines whether there is a mismatch in the ME response 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.

AT+FDFFC

AT+FDFFC=? +FDFFC: (list of supported <df>s) OK

<df>

mismatch checking is always disabled. The controlling application has to check the +FDCS: DF subparameter and transfer matching data

AT+FDFFC?

<df> OK

AT+FDFFC=<df>

+FDFFC: (list of supported <df>s) OK
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2.3.11.10 AT+FDIS AT+FDIS Query or set session parameters Used for FAX class 2 only This command allows the controlling application to set and constrain the capabilities used for the current session. +FDIS is used to generate DIS or DTC messages directly. +FDIS (and received DIS messages) is also used to generate DCS messages.

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2.3.11.20 AT+FREV AT+FREV Read command AT+FREV? Identify Product Revision Used for FAX class 2 only This command sends the revision identification to the TA.

V2.550 OK

2.3.11.21 AT+FRH AT+FRH

AT+FRH=<mod>

Receive Data Using HDLC Framing Used for FAX class 1 only 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. Parameter modulation mode <mod> 3 V21 Chbps

CONNECT/ERROR

2.3.11.22 AT+FRM AT+FRM

AT+FRM=?

Receive Data Used for FAX class 1 only 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
<mod> V.29 V.29 V.27ter V.27ter 9600 bps 7200 bps 4800 bps 2400 bps
(List of supported modulation modes <mod>s) OK

AT+FRM=<mod>

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2.3.11.23 AT+FRS AT+FRS Receive Silence Used for FAX class 1 only Write command AT+FRS=<time> This command 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.

<time>

0. 255
number of 10 millisecond intervals
2.3.11.24 AT+FTH AT+FTH Transmit Data Using HDLC Framing Write command Used for FAX class 1 only AT+FTH=<mod> 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. Parameter 3 V.21 Chbps <mod>
2.3.11.25 AT+FTM AT+FTM Test command AT+FTM=? Transmit Data Used for FAX class 1 only 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. Parameter modulation mode <mod> 96 V.bps 72 V.bps Write command Parameter AT+FTM=<mod> <mod>

AT command set for S45 Siemens mobile phones and modems _________________________________________________________________________________________ AT+CGREG Telephone number of caller For an explanation of parameters see AT+CLIP Direct output of the short message For an explanation of parameters see AT+CNMI Indication that a new message has arrived For an explanation of parameters see AT+CNMI Telephone number of called line For an explanation of parameters see AT+COLP Network registration For an explanation of parameters see AT+CREG Supplementary service intermediate/unsolicited result code For an explanation of parameters see AT+CSSN Message indicating if ACM has reached the maximum value ACMmax For an explanation of parameters see AT^SACM Message indicating whether card has been removed or inserted For an explanation of parameters see AT^SCKS SMS overflow indicator For an explanation of parameters see AT^SMGO The user has selected a menu entry from a menu created by means of AT^SSTK
+CLIP: <num>,<type>,,,,<CLI validity>
+CMT: <length><CR><LF<>pdu>
+CMTI: <mem>,<index>
+COLP: <num>,<type>

+CREG: <stat>

+CSSI: <code1> +CSSU: <code2>

^SACM: <m>

^SCKS: <m>

^SMGO: <mode>

^SSTK:<data> Table 2-9: List of unexpected commands
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2.5 Appendix A

2.5.1 Factory settings made by AT&F
ATE1 (only in case of RCCP mode) ATQ0 ATV1 AT+CCWA=0 AT+CREG=0 AT+CLIP=0 AT+COLP=0 AT+CRC=0 AT+CAOC=0 AT+CMEE=0 AT+CPBS=SM (if available) AT+COPS=0 AT+VTS=1 AT+CSCS="GSM" AT+CSSN=0,0 AT^SCKS=0 Reset pending locks (Phone Pin/Puk, Pin2/Puk2.) which are given as answer to AT+CPIN? AT+CSMS=0 AT+CNMI=0,0,0,0,1 AT^SMGO=0 AT+CSCB=0
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Features of the Telephone book memory
Table 2-10 lists the features supported by the telephone book memory. Name FD SM Description Category Access Write allowed ? How to delete completely
Fix-dialing number GSM 07.07 (SIM fix-dialing telephone book) Abbreviate dialing number GSM 07.07 (SIM telephone book)

DC (MD) ON (OW) LD

Mobile last dialing number (last number redial memory; only if LD is not available) Own Numbers (SIM own telephone numbers) SIM last dialing number (last number redial memory on SIM) Mobile-equipment telephone book (ME dialing numbers) Barred dialing numbers (blocked numbers) Service dialing numbers (Service numbers) Missed dialing numbers (unanswered calls) Callback dialing numbers (answered calls) Blacklist of dialing numbers (numbers that are blocked for a certain time in order to prevent continuous accesses from remote control) Mailbox dialing numbers (network-operator mailbox) Common sortable numbers (sorted combination of SM, ME, FD) Red book numbers (CS entries with ! at the end of the name portion)

To be able, however, to enter quotation marks (and some other special characters) in string parameters you will have to use the Escape character (hex value 0x5c). While 0x5c denotes the backslash (`\`) in the ASCII character set (Ascii=Windows=0x5C), in the GSM character set 0x5C denotes the `` character. The escape sequence thus has the following structure: - The sequence begins with the escape character 0x5C (ASCII=Windows=`\', GSM=``) - The special character follows and is entered as a 2 Byte representation of the GSM chacter set value. e.g. the 2 Byte representation of the `@` (GSM=0x00) is `00` Table 2-11 lists the special characters that should be entered using the escape sequence: GSM Char " @ GSM hex value 0x5C 0x22 0x08 0x00 ASCII char. \ BSP NULL 3 byte esc. seq.(hex) 0x5C 0x35 0x43 0x5C 0x32 0x32 0x5C 0x30 0x38 0x5C 0x30 0x30 Note Backslash String delimiter Backspace GSM NULL
Table 2-11: Using escape characters in commands Examples of using escape characters in GSM commands are listed in Table 2-12: Desired phonebook entry lhndler Eddi" Kurz Oo @Adr. <text> in AT+CPBW command (hex) 0x22 0x5C 0x35 0x43 0x6C 0x68 0x7B 0x6E 0x64 0x6C 0x65 0x72 0x22 0x22 0x5C 0x32 0x32 0x45 0x64 0x64 0x69 0x5C 0x32 0x32 0x20 0x4B 0x75 0x72 0x7A 0x22 0x22 0x4F 0x5C 0x30 0x38 0x6F 0x22 0x22 0x5C 0x30 0x30 0x41 0x64 0x72 0x2E 0x22 [no problems with strlen()] 72 2E 22 (may cause problems with strlen() in application)
Table 2-12: Using escape characters in GSM commands Note: When reading phonebook records, there is NO replacement. Every character will appear in normal GSM character set notation (like the left column in the example above).
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2.6 S Registers

This section provides the meanings of S registers used in the modem: S Register S0 S3 S4 S5 S6 S7 S8+S9 S 10 S 11. S17 S 18 Function (default values in bold type) The number of rings before the call is answered default: 0 (i. e. does not answer) Command termination character and first character of response trailer (CR) Second character of response trailer (LF) Editing character; erases the previous character (BS) Escape character Wait for carrier after dialing (in seconds). default: 60 No action Delay between Lost Carrier and Hang up in 0.1 sec. (Default 2 = 200ms) No action Bit 1 Bit 1 S 19. S99 No action No SMS indication +C With incoming SMS indication +C No GSM exit cause With GSM exit cause
Table 2-13: S-Registers Only the following S registers can be modified by means of the corresponding ATSn=x command (where n denotes the number of the register): S0, S3, S5, S6, S7, S8, S10; S18. All the other S registers are used internally and thus read-only. The contents of a single S register can be displayed via the ATSn? command (where n denotes the number of the register). It is not possible to have the contents of multiple registers displayed at the same time.

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AT command set for S45 Siemens mobile phones and modems -interrogation of the current <type>,<subtype>,<actNumber>,<maxNumber> at^sbnw?<CR> <CR><LF>^SBNW: "vcs",20,2,3<CR><LF> <CR><LF>OK<CR><LF> description: The current object which is uploaded is an VCS object. It has to be stored on record 20. 2 of 3 packets have already been uploaded.
-deleting of record 20 at^sbnw="vcs",20,0<CR> <CR><LF>OK<CR><LF> -download entry from record 20 at^sbnr="vcs",20<CR> <CR><LF>^SBNR:<space>"vcs",20,1,1<CR><LF> 424547494E3A5643414C454E4441520D0A56455253494F4E3A312E300D0A424547494E3A564556454E540 D0A43415445474F524945533A414E4E49564552534152590D0A445453544152543A31393939313231335431 30303030300D0A4445534352495054494F4E3A572E20766F6E205369656D656E730D0A454E443A56455645 4E540D0A454E443A5643414C454E4441520D0A<CR><LF> <CR><LF>OK<CR><LF> The mobile divides the record entry into packets of 176 byte (=176*2 characters). -Download of an empty record 20 at^sbnr="vcs",20<CR> <CR><LF>OK<CR><LF> -Test command of AT^SBNW at^sbnw=?<CR> <CR><LF>^SBNW:<space>("bmp",(0)),(mid,(0)),(vcs,(1-30)) <CR><LF> <CR><LF>OK<CR><LF> description: The mobile supports bitmaps of subtype 0, midi obects of subtype 0 and vcs objects of the subtypes 1 to 30.
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Examples and hints for using GPRS commands
2.8.2.1 Defining and using a Context Definition Id (CID): Every time a CID is used as a parameter for a GPRS command the CID has to be defined first via the AT+CGDCONT command. To retrieve the parameter of a CID the AT+CGDCONT read option must be used. If the response of AT+CGDCONT? is OK only, no CID is defined. AT+CGDCONT? OK

// no CID defined

All parameters of the CID are initiated by NULL or non-existing values, and the CID itself is set to undefined. To define a CID use the AT+CGDCONT command with at least one CID parameter. The present version of the mobile software supports CID 1 and CID 2 by using the AT+CGDCONT command. e.g. AT+CGDCONT=1,IP OK
// defines CID 1 and sets the PDP type to IP // access point name and IP address arent set
AT+CGDCONT=2,IP, "internet.t-d1.gprs", 111.222.123.234 OK // defines CID 2 and sets PDP type, APN and IP addr A subsequent read command will return AT+CGDCONT? +CGDCONT:1,IP +CGDCONT:2,IP," internet.t-d1.gprs",111.222.123.234 OK AT+CGDCONT=1 OK

3.2 Summary of CMS ERRORS related to GSM 07.05
Table 3-2 lists the numbers and meaning of CMS errors related to GSM 07.05: <err> code Meaning Unassigned (unallocated) number Operator determined barring Call barred Short message transfer rejected Destination out of service Unidentified subscriber Facility rejected Unknown subscriber Network out of order Temporary failure Congestion Resources unavailable, unspecified Requested facility not subscribed Requested facility not implemented Invalid short message transfer reference value Invalid message, unspecified Invalid mandatory information Message type non-existent or not implemented Message not compatible with short message protocol state Information element non-existent or not implemented Protocol error, unspecified Interworking, unspecified Telematic interworking not supported Short message Type 0 not supported Cannot replace short message Unspecified TP-PID error Data coding scheme (alphabet) not supported Message class not supported Unspecified TP-DCS error Command cannot be actioned Command unsupported Unspecified TP-Command error TPDU not supported SC busy No SC subscription SC system failure Invalid SME address Destination SME barred SM Rejected-Duplicate SM TP-VPF not supported TP-VP not supported D0 SIM SMS storage full No SMS storage capability in SIM Error in MS Memory Capacity Exceeded SIM Application Toolkit Busy SIM data download error Unspecified error cause
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AT command set for S45 Siemens mobile phones and modems ME failure SMS service of ME reserved Operation not allowed Operation not supported Invalid PDU mode parameter Invalid text mode parameter SIM not inserted SIM PIN required PH-SIM PIN required SIM failure SIM busy SIM wrong SIM PUK required SIM PIN2 required SIM PUK2 required Memory failure Invalid memory index Memory full SMSC address unknown no network service Network timeout NO +CNMA ACK EXPECTED Unknown error User abort
Table 3-2: CMS ERRORS related to GSM 07.05
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3.3 GPRS return values issued by AT+CEER
Table 3-3 lists the GPRS return values issued by the AT+CEER command in the form <x>.<y>, where x indicates the type of the value returned and y denotes the reason why the call was terminated. Table 3-3 provides the values for the applications handled by AT+CEER (x values). For more detailed information on meaning of the y values see tables Table 3-4 through Table 3-9: Value Meaning GMM_LOC_GSM (see section 3.3.1) SM_LOC_GSM (see section 3.3.2) SM_LOC_OWN (see section 3.3.3) GAPI_LOC_OWN (see section 3.3.4) LMAN_LOC_OWN (see section 3.3.5) ENIP_LOC_OWN (see section 3.3.6)

Table 3-3 GPRS return values

3.3.1 Value 101 111

GMM-GSM return values issued by AT+CEER (GMM_LOC_GSM) Meaning IMSI is unknown in HLR MS is illegal ME is illegal GPRS services not allowed GPRS services not allowed in combination with non-GPRS services MS cannot be identified Implicit detachment PLMN not allowed Location area not allowed Roaming not allowed in current location area GPRS services not allowed in current PLMN MSC temporarily unreachable Network failure Congestion Retry upon entry into new cell low high Message semantically incorrect Mandatory information invalid Message type does not exist or is not implemented Message type incompatible with protocol state Information element does not exist or is not implemented Conditional error Message incompatible with protocol state Unspecified protocol error
Table 3-4: GMM return values issued by AT+CEER
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3.3.2 Value 101 111

SM-GSM return values issued by AT+CEER (SM_LOC_GSM) Meaning LLC or SNDCP failure Insufficient resources Missing or unknown APN PDP address or type unknown User authentication failed Activation rejected by GGSN Activation rejected for unspecified reason Service option not supported Requested service option not subscribed Service option temporarily out of order NSAPI already used Regular deactivation QoS not accepted Network failure Reactivation required Invalid transaction identifier value Message semantically incorrect Mandatory information invalid Message type does not exist or is not implemented Message type incompatible with protocol state Information element does not exist or is not implemented Conditional IE error Message incompatible with protocol state Unspecified protocol error
Table 3-5: GMM return values issued by AT+CEER

3.3.3 Value 7

SM_OWN return values issued by AT+CEER (SM_LOC_OWN) Meaning T3380 timer expired DeactAct DeactActReject DeactActStaticPDPaddressCollision Unspecified protocol error
Table 3-6: GAPI return values issued by AT+CEER
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3.3.4 Value 4 255

GAPI return values issued by AT+CEER (GAPI_LOC_OWN) Meaning Regular deactivation of the call Action temporarily not allowed Wrong connection type Specified data service profile invalid PDP type or address is unknown Undefined