Telit Communications S p A TRIZIUM Tri-band GSM/GPRS PCS Data Terminal Module User Manual 80264ST10007a r3
Telit Communications S.p.A. Tri-band GSM/GPRS PCS Data Terminal Module 80264ST10007a r3
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![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 33 of 2025 AT CommandThe Telit TRIZIUM module can be driven via the serial interface using the standard AT commands1. The Telit TRIZIUMmodule is compliant with:1. Hayes standard AT command set, in order to maintain the compatibility with existing SW programs.2. ETSI GSM 07.07 specific AT command and GPRS specific commands.3. ETSI GSM 07.05 specific AT commands for SMS (Short Message Service) and CBS (Cell Broadcast Service)4. FAX Class 1 compatible commandsMoreover the Telit TRIZIUM module supports also Telit proprietary AT commands for special purposes.In the following the dedicated description of how to use the AT commands with the Telit TRIZIUM module.5.1 DefinitionsThe following syntactical definitions apply:<CR> Carriage return character, is the command line and result code terminator character, which value, in decimalASCII between 0 and 255,is specified within parameter S3.The default value is 13.<LF> Linefeed character, is the character recognised as line feed character. Its value, in decimal ASCII between 0and 255, is specified within parameter S4. The default value is 10.The line feed character is output after carriage return character if verbose result codes are used (V1 option used )otherwise, if numeric format result codes are used (V0 option used) it will not appear in the result codes.<...> Name enclosed in angle brackets is a syntactical element. They do not appear in the command line.[...] Optional subparameter of a command or an optional part of TA information response is enclosed in squarebrackets. Brackets themselves do not appear in the command line. When subparameter is not given in AT commandswhich have a read command, new value equals to its previous value. In AT commands which do not store the values ofany of their subparameters, and so have not a read command, which are called action type commands, action should bedone on the basis of the recommended default setting of the subparameter.5.2 AT Command SyntaxGSM commands use syntax rules of extended commands.Every extended command has a test command (trailing =?) to test the existence of the command and to giveinformation about the type of its subparameters. There are two types of extended command:- Parameter type commands which also have a read command (trailing ?) to check the current values ofsubparameters.- Action type commands do not store the values of any of their possible subparameters, and therefore do not have aread command.5.2.1 Command linesThe basic structure of the command lines are:• ATCMD1<CR> where AT is the command line prefix, CMD1 is a basic command (i.e. it have not + prefix) andCR is the command line terminator character• ATCMD2=10<CR> where 10 is a subparameter• AT+CMD1;+CMD2=, ,10<CR> These are two examples of extended commands (which have a + prefix). They aredelimited with semicolon. In the second command the subparameter is omitted• +CMD1?<CR> This is a read command for checking current subparameter values 1 The AT is an ATTENTION command and is used as a prefix to other parameters in a string. The AT commandcombined with other parameters can be set up in the communications package or typed in manually as a command lineinstruction.](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-33.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 55 of 2025.3.2.14 +ICF - DTE - modem character format+ICF – DTE-modem character formatExecute commandRead commandAT+ICF? Returns current value of the character format.Write commandAT+ICF = <format>[,<parity>] Defines the asynchronous character format to be used when autobauding isdisabled.Parameter:<format> = 0..5, < parity> = 0/1AT+ICF = 0 - auto detectAT+ICF = 1 - 8N2AT+ICF = 2,0 - 8O1AT+ICF = 2,1 - 8E1AT+ICF = 3 - 8N1AT+ICF = 5,0 - 7O1AT+ICF = 5,1 - 7E1Note: the character format is defined as: number of bit per char, parity bitand stop bit; where parity can be None, Odd and Even. E.g. 8E1 means 8 bitper char with the even parity bit and 1 stop bit.Test commandAT+ICF=? Returns all supported values of the parameters <format> and <parity>ExampleReference V25terSW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-55.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 56 of 2025.3.3 Call Control5.3.3.1 D - dialD – dialExecute commandATD <number> Starts a call to the phone number given as parameter.Parameter: <number> - phone number to be dialledNote: The call is a data call or voice call depending on +FCLASS setting. If AT+FCLASS=8command was issued before calling then the call will be done as a voice call, instead ifAT+FCLASS=0 command was issued the call will be a data one. The default value of+FCLASS is 0 hence calls are by default data ones.The numbers accepted are 0-9 and *,#,”A”, ”B”, ”C”, ”D”,”+”.For backwards compatibility with landline modems modifiers “T”, ”P”, ”R”, ”,”, ”W”, “!”,“@” are accepted but have no effect.ATD <number> ; Issues a VOICE call to the number given regardless of the current value of the parameter+FCLASS, which remains unaffected.Parameter: <number> - phone number to be dialled.ATD <n> [;] Issues a call (VOICE if ";" modifier is added to the end of the command) to the numberstored in the TRIZIUM internal phonebook position number <n>.Parameter: <n> - internal phonebook position to be calledATD> <n> [;] Issues a call (VOICE if ";" modifier is added to the end of the command) to the numberstored in the SIM phonebook in the record number <n>.Parameter: <n> - SIM phonebook position to be calledATDL Issues a call to the last number dialled.ATDS=<nr> Issues a call to the internally stored number at the position <nr>. ( Seecommands &N and &Z)ATD<n> I [;] Issues a call [voice if ; is added] overwriting the CLIR setting in order to hide the CLI to thecalled party for the current call only.ATD<n> i [;] Issues a call [voice if ; is added] overwriting the CLIR setting in order to showthe CLI to the called party for the current call only.ATD<n> G[;]ATD<n>g[;] Issues a call [voice if ; is added] checking the CUG supplementary service forthe current call. Refer to +CCUG command.ATD*<gprs_sc>[*<addr>][*[<L2P>][*[<cid>]]]]#This command is specific of GPRS functionality and causes the MT toperform whatever actions are necessary to establish communication betweenthe TE and the external PDN.Parameters:<GPRS_SC> - (GPRS Service Code) a digit string (value 99) which identifiesa request to use the GPRS<addr> - string that identifies the called party in the address space applicableto the PDP.<L2P>: a string which indicates the layer 2 protocol to be used (see+CGDATA command). For communications software that does not supportarbitrary characters in the dial string, the following numeric equivalents shallbe used:1 - PPP](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-56.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 76 of 2025.4.2.3 +CR - service reporting control+CR – service reporting controlExecute commandRead commandAT+CR? Returns current intermediate report settingWrite commandAT+CR = <mode> Controls whether or not intermediate result code +CR: <serv> is returned from the TAto the TE. If enabled, the intermediate result code is transmitted at the point duringconnect negotiation at which the TA has determined which speed and quality of servicewill be used, before any error control or data compression reports are transmitted, andbefore the intermediate result code CONNECT is transmitted.Parameter: <mode><mode> = 0 - disables intermediate result code report<mode> = 1 - enables intermediate result code reportThis command replaces V.25ter [14] command Modulation Reporting Control +MR,which is not appropriate for use with a GSM terminal.The result code parameter <serv> has the meaning:ASYNC - asynchronous transparentSYNC - synchronous transparentREL ASYNC - asynchronous non-transparentREL SYNC - synchronous non-transparent.Test commandAT+CR=? Returns the supported range of values of the parameter <mode>.ExampleReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-76.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 79 of 2025.4.3 Network service handling5.4.3.1 +CNUM - subscriber number+CNUM – subscriber numberExecute commandAT+CNUM Returns the subscriber number i.e. the phone number of the device that is stored in the SIMcard.Note: the returned number format is:+CNUM: [<alpha>] , <number> , <type><alpha> - optional alphanumeric string associated to <number><number> - string containing the phone number in the format <type><type> - type of number:<type> = 145 - international numbering scheme (contains the character "+")<type> = 129 - national numbering schemeRead commandWrite commandTest commandExampleReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-79.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 80 of 2025.4.3.2 +CREG - network registration report+CREG – network registration reportExecute commandRead commandWrite commandAT+CREG = <mode> Enables/disables network registration reports depending on the parameter mode.Parameter:<mode> 0 – disable network registration unsolicited result code 1 - enable network registration unsolicited result code 2 - enable network registration unsolicited result code with network Cell identification dataIf mode=1, network registration result code reports:+CREG: <stat><stat> = 0 - not registered, ME is not currently searching a new operator to registerto<stat> = 1 – registered, home network<stat> = 2 - not registered, but ME is currently searching a new operator to register to<stat> = 3 - registration denied<stat> = 4 -unknown<stat> = 5 - registered, roamingIf mode=2, network registration result code reports:+CREG: <stat>[,<Lac>,<Ci>]where:<Lac> is the Local Area Code for the currently registered on cell<Ci> is the Cell Id for the currently registered on cellNote: <Lac> and <Ci> are reported only if mode=2 and the mobile is registered onsome network cell.Test commandAT+CREG? Reports the <mode> and <stat> parameter values in the format:+CREG: <mode>,<stat>[,<Lac>,<Ci>]Note: <Lac> and <Ci> are reported only if mode=2 and the mobile is registered onsome network cell.Example ATOKat+creg?+CREG: 0,2 (the TRIZIUM is in network searching state)OKat+creg?+CREG: 0,2OKat+creg?+CREG: 0,2OK](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-80.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 82 of 2025.4.3.3 +COPS - operator selection+COPS – operator selectionExecute commandRead commandAT+COPS? Returns current value of <mode>,<format> and <oper>Write commandAT+COPS =[<mode>[,<format>[,<oper>]]] Forces an attempt to register the GSM network operator, <mode> parameterdefines whether the operator selection is done automatically or it is forced with<oper> parameter.Parameters:<mode> = 0 - automatic choice (the parameter <oper> will be ignored)<mode> = 1 - manual choice<mode> = 3 - set only <format> parameter (the parameter <oper> will beignored)<format> = 0 - alphanumeric max length 16 digits<format> = 1 – alphanumeric short form<format> = 2 - Numeric 5 digits [country code (3) + network code(2)]<oper>: network operator in the <format> parameter defined format.Note: if manual choice selection operator is not available no other operators willbe chosen for registration.Test commandAT+COPS=? Returns the list of network operators in the format:+COPS: ( <stat> ,<oper (in format=0)>,””,<oper (in format=2)> )where the new parameter stat defines the status of the operator:<stat> = 0 – unknown<stat> = 1 – available<stat> = 2 – current<stat> = 3 – forbiddenNote: since with this command a network scan is done, this command mayrequire some seconds before the output is given.ExampleReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-82.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 83 of 2025.4.3.4 +CLCK - facility lock/ unlock+CLCK – facility lock/unlockExecute commandAT+CLCK =<fac>, <mode>[,<passwd>[,<class>]]It is used to lock or unlock a ME o a network facility.Parameters: <fac>:"SC" - SIM (PIN request) (device asks SIM password at power-up and when this lockcommand issued)"AO"- BAOC (Barr All Outgoing Calls)"OI" - BOIC (Barr Outgoing International Calls)"OX"- BOIC-exHC (Barr Outgoing International Calls except to Home Country)"AI" - BAIC (Barr All Incoming Calls)"IR" - BIC-Roam (Barr 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)"FD" - SIM fixed dialling memory feature (if PIN2 authentication has not been doneduring the current session, PIN2 is required as <passwd>)"PN" - network Personalisation"PU" - network subset Personalisation<mode>: defines the operation to be done on the facility<mode> = 0 - unlock facility<mode> = 1 - lock facility<mode> = 2 - query status ( see below )<passwd>: shall be the same as password specified for the facility from the DTE userinterface or with command Change Password +CPWD<class>: represents the class of information of the facility ( sum of bits )<class> = 1- voice (telephony)<class> = 2 - data (refers to all bearer services)<class> = 4 - fax (facsimile services) ()Read commandAT+CLCK=<fac>,2 query the status of the facility <fac>; returns+CLCK:<status>where <status> defines the current status of thefacility:0 - not active ( locked )1 - active ( unlocked )Note: For some facility the status is requested to the network, hence if no network isavailable the command returns the ERROR message.Write commandTest commandAT+CLCK=? Reports all the facility supported by the device.ExampleReference GSM 07.07SW release Version A5.4.3.5 +CPWD - change facility password+CPWD – change facility passwordExecute commandAT+CPWD = <fac>,<oldpwd>, <newpwd> Changes the password for the facility lock function of the facility fac.Parameter: <fac>, <oldpwd>, <newpwd>Note: parameter <oldpwd> is the old password while <newpwd> is the new one.Read commandWrite commandTest command](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-83.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 87 of 2025.4.3.8 +CCFC - call forwarding number and conditions+CCFC – call forwarding number and conditionExecute commandAT+CCFC =<reason>,<cmd>[,<number>[,<type>[,<class>][,,,<time>]]]Controls the call forwarding supplementary service. Registration, erasure, activation,deactivation, and status query are supported.Parameters:<reason> = 0 – unconditional<reason> = 1 - mobile busy<reason> = 2 - no reply<reason> = 3 - not reachable<reason> = 4 - all calls (not with query command)<reason> = 5 - all conditional calls (not with query command)<cmd> = 0 – disable<cmd> = 1 - enable<cmd> = 2 - query status (see below for further explanations)<cmd> = 3 – registration<cmd> = 4 – erasure<number>: phone number of forwarding address in format specified by <type>parameter<type>: type of address byte in integer format :145 - international numbering scheme (contains the character "+")129 - national numbering scheme<class>: is a sum of integers each representing a class of information which thecommand refers; default 7 ( voice + data + fax )<class> = 1 - voice (telephony)<class> = 2 - data<class> = 4 - fax (facsimile services, from SW release C)<time>: is the time in seconds after which the call is diverted if "no reply" reason ischosen. Valid only for "no reply" reason.Read commandAT+CCFC =<reason>,2,[number>[,<type>[,dopo<time>s]]]Queries the network for forwarding service settings on a specific reason. The result isin the form:+CCFC:<status>,<class>[,<number>[,<type>[,dopo <time>s]]]where:<status> = 0 - service not active<status> = 1 - service active (calls will be forwarded)<time>: - 1...30 when "no reply" option for reason is enabled or queried, this gives thetime in seconds to wait before call is forwarded, default value is 20.The other parameters are as seen before.](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-87.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 89 of 2025.4.3.9 +CCWA - call waiting+CCWA – call waitingExecute commandAT+CCWA =[<n>[,<cmd>[,<class>]]] Controls the call waiting indication supplementary service. Activation, deactivation,and status query are supported.Parameters:<n>: enables/disables call waiting indication reporting:<n> = 0 – disable<n> = 1 - enable<cmd> enables/disables or queries the service at network level:<cmd> = 0 - disable<cmd> = 1 – enable<cmd> = 2 - query status<class>: is a sum of integers each representing a class of information which thecommand refers; default 7 ( voice + data + fax )<class> = 1 - voice (telephony)<class> = 2 - data<class> = 4 - fax (facsimile services)The response to the query command is in the form:+CCWA=<status>,<class>Where<status> represents the status of the service:<status> = 0 - inactive<status> = 1 - active<class> is the class of calls the service status refers to.Note: if parameter <cmd> is omitted then network is not interrogated.Note2: In the query command the class parameter must not be issued.Note3: The difference between call waiting report disabling (AT+CCWA = 0,1,7)and call waiting service disabling (AT+CCWA = 0,0,7) is that in the first case thecall waiting indication is sent to the device by network but this last one does notreport it to the DTE; instead in the second case the call waiting indication is notgenerated by the network. Hence the device results busy to the third party in the 2ndcase while in the 1st case a ringing indication is sent to the third party.Note4: The command AT+CCWA=1,0 is a non sense and must not be issued.Read commandAT+CCWA? Reports the current value of the parameter <n>.Write commandTest commandAT+CCWA=? Reports the supported values for the parameter <n>.ExampleReference GSM 07.07SW release Version A5.4.3.10 +CHLD - call holding services+CHLD – call holding servicesExecute commandAT+CHLD = <n> Controls the network call hold service. With this service it is possible to disconnecttemporarily a call and keep it suspended while it is retained by the network,contemporary it is possible to connect another party or make a multipartyconnection.The action of the command depends on the value of the parameter](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-89.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 91 of 2025.4.3.11 +CUSD - unstructured supplementary service data+CUSD – unstructured supplementary service dataExecute commandAT+CUSD = <n>,[<str>] Enables /disables the unstructured service data reporting.Parameters:<n>: is used to disable/enable the presentation of an unsolicited result code:+CUSD: <m>[,<str>,<dcs>] to the TE.<n>:<n> = 0 - disable the result code presentation in the DTA<n> = 1 - enable the result code presentation in the DTA<dcs> indicates which alphabet is used (Data Coding Scheme),refer to commandSelect TE Character Set +CSCS<str> - USSD-string (when <str> parameter is not given, network is notinterrogated):- if TE character set other than "HEX": ME/TA converts GSM alphabet into currentTE character set according to rules of GSM 07.05- if TE character set is "HEX": ME/TA converts each 7-bit character of GSMalphabet into two IRA character long hexadecimal number (e.g. character ? (GSM23) is presented as 17 (IRA 49 and 55))-if<dcs> indicates that 8-bit data coding scheme is used: ME/TA converts each 8-bitoctet into two IRA character long hexadecimal number (e.g. octet with integer value42 is presented to TE as two characters 2A (IRA 50 and 65))<m>:<m> = 0 - no further user action required, hence network initiated USSD-Notify, orno further information needed after mobile initiated operation.<m> = 1 - further user action required, hence network initiated USSD-Request, orfurther information needed after mobile initiated operation<m> = 2 - USSD terminated by the network<m> = 3 - other local client has responded<m> = 4 - operation not supported<m> = 5 - network time outNote: only mobile initiated operations are supported.Warning: In case of successful mobile initiated operation, DTA waits the USSDresponse from the network and sends it to the DTE before the final result code. Thiswill block the AT command interface for the period of the operation.Read commandAT+CUSD? Reports the current value of the parameter <n>Write commandTest commandAT+CUSD=? Reports the supported values for the parameter <n>:<n> = 0 - result code presentation in the TA disabled<n> = 1 - result code presentation in the TA enabledExampleReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-91.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 93 of 2025.4.3.13 +CLCC - list current calls+CLCC – list current callsExecute commandAT+CLCC Reports the list of current calls active and their characteristics by sending the report+CLCC:<id>,<dir>,<stat>,<mode>,<mpty>[,<number>,<type>]for each active call,where:<id> - call identification number<dir> - call direction 0 - mobile originated call 1 - mobile terminated 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> - call type 0 – voice 1 – data 2 – fax 9 - unknown<mpty> - multiparty call flag 0 - call is not one of multiparty (conference) call parties 1 - NOT SUPPORTED<number>: phone number in format specified by <type><type>: type of phone number byte in integer format 145 - international numbering scheme (contains the character "+") 129 - national numbering schemeNote: If no call is active then only OK message is sent. This command is useful inconjunction with command +CHLD to know the various call status for call holding.Read commandWrite commandTest commandExampleReference GSM 07.07SW release Version A5.4.3.14 +CSSN – SS Notification+CSSN – SS notificationExecute commandRead commandWrite commandAT+CSSN = <n>, <m> Enable/disable the supplementary service related network initiated notifications,during the origin of outgoing calls (+CSSI) and incoming calls (+CSSU)Parameters:<n>: sets the +CSSI result code presentation status 0 disable 1 enable<m>: sets the +CSSU result code presentation status 0 disable 1 enable](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-93.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 95 of 2025.4.3.15 +CCUG – Closed User Group supplementary service control+CCUG – Closed User Group supplementary service controlExecute commandRead commandAT+CCUG? Reports the current value of the parameters in the format:+CCUG: <n>,<index>,<info>Write commandAT+CCUG=<n>[,<index>[,<info>]] Enable/disable the CUG supplementary serviceParameters:<n> 0 - disables the temporary CUG settings for all the successive calls 1 - enables the temporary CUG settings for all the successive calls<index> 0...9 - CUG index 10 - no index (preferential CUG taken from subscriber data)<info> 0 - no information 1 - suppress Outgoing Access (OA) 2 - suppress preferential CUG 3 - suppress OA and preferential CUGTest commandAT+CCUG=? Reports the supported range of values for the parameters <n>,<index>, <info>ExampleReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-95.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 98 of 2025.4.4.3 +CPIN - enter PIN+CPIN – enter PINExecute commandRead commandAT+CPIN? Reports the PIN/PUK/PUK2 request status of the device in the form:+CPIN:<code>where <code> is the PIN/PUK/PUK2 request status code: READY - device is not pending for any password SIM PIN - device is waiting SIM PIN to be given SIM PUK - device is waiting SIM PUK to be given SIM PIN2 - device is waiting SIM PIN2 to be given; this <code> is returnedonly when the last executed command resulted in PIN2 authentication failure (i.e.+CME ERROR: 17) SIM PUK2 - device is waiting SIM PUK2 to be given; this <code> is returnedonly when the last executed command resulted in PUK2 authentication failure (i.e.+CME ERROR: 18) PH-NET PIN - device is waiting network personalization password tobe given PH-NETSUB PIN - device is waiting network subset personalizationpassword to be givenNote: Pin pending status at startup depends on PIN facility setting, to change or querythe default power up setting use the AT+CLCK=SC,<mode>, <pin> command.Write command AT+CPIN =<pin>[,<newpin>] Sends to the device a password (SIM PIN, SIM PUK, PH-SIM PIN, etc.) whichmay be required to further operate the device.If the PIN required is SIM PUK or SIM PUK2, the <newpin> is required. Thissecond pin, <newpin>,will replace the old pin in the SIM.The command may be used to change the SIM PIN by sending it withboth parameters <pin> and <newpin> when if PIN request is pending;if no PIN request is pending the command will return an error code andto change the PIN the command +CPWD must be used instead.Parameters: <pin>, <newpin>Note: the only commands which are accepted when device is pending SIM PIN, SIMPUK, or PH-SIM are: +CGMI, +CGMM, +CGMR, +CGSN, D112; (emergency call),+CPAS, +CPIN.To check the status of the PIN request use the command AT+CPIN?Test commandExample AT+CMEE=1OKAT+CPIN?+CME ERROR: 10 (error because you have to insert the SIM)AT+CPIN?+CPIN: READY (this response is after you have inserted the SIM)OKReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-98.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 101 of 2025.4.4.6 +CPBR - read phonebook entries+CPBR – read phonebook entriesExecute commandRead commandWrite commandAT+CPBR =<index>[,<index2>] returns phonebook entries in locations number from <index1> to <index2> from thecurrent phonebook memory storage selected with +CPBS. If<index2> is omitted,only location <index1> is returned.Parameters: <index>, <index2>The response format is:+CPBR: <index>,<number>,<type>,<name>where<index> - the current position number of the PB index (to see the range of valuesuse +CPBR=?)<number> - the phone number stored in the format <type><type> - type of phone number byte in integer format 145 - international numbering scheme (contains the character "+") 129 - national numbering scheme<name> - the alphanumeric text associated to the number (e.g. name of address)Note: If all queried locations are empty (but available), no information text lines willbe returned, while if listing fails in an ME error, +CME ERROR: <err> is returned.Test command AT+CPBR=? Returns the supported range of values of the parameters in the form+CPBR: (<minIndex> - <maxIndex>),<nlength>,<tlength>where<minIndex> - the minimum index number<maxIndex>- the maximum index number<nlength> - maximum number field length<tlength> - maximum name field lengthNote: remember to select the PB storage with +CPBS command before issuing PBcommands.ExampleReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-101.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 103 of 2025.4.4.8 +CPBW - write phonebook entry+CPBW – write phonebook entryExecute commandRead commandWrite commandAT+CPBW =[<index>][,<number>[,<type>[,<name>]]]Stores at the position <index> a Phonebook record defined by <number>,<type> and<name> parametersParameters: <index>, <number>, <type>, <name><number> - the phone number in the format <type><type> - the type of number 145 - international numbering scheme (contains the character "+") 129 - national numbering scheme<name> - the text associated to the number.Note: If record number <index> already exists, it will be overwritten.If only <index> is given, the record number <index> is deleted.If <index> is omitted, the number <number> is stored in the first free phonebooklocation.Text in the <name> field and number in the <number> field may or may not beincluded in double brackets.Test command AT+CPBW=? Reports the maximum lengths of fields <number> and <name> in the PB entry in theform:+CPBW: <max_number_length>,<max_name_length>ExampleReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-103.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 105 of 2025.4.4.10 +CALA - Alarm Management+CALA – Alarm ManagementExecute commandRead commandAT+CALA? Reports the current alarm time stored in the internal Real Time Clock, if present, inthe format:+CALA: <time>,<n>,<type>[,<text>]Write commandAT+CALA = [<time>[,<n>[,<type>[,<text>]]]] Stores in the internal Real Time Clock the current alarm time and settings defined bythe parameters <time>, <n>,<type>,<text>.When the RTC time reaches the alarm time then the alarm starts, the behaviour of theTRIZIUM depends upon the setting <type> and if the device was already ON at themoment when the alarm time had come.Parameter:<time> - current alarm time in the format : "yy/MM/dd,hh:mm:ss±zz" as defined for +CCLK command.<type> - alarm behaviour type 0 - reserved for other equipment use. 1 - the TRIZIUM simply wakes up fully operative as if the ON/OFF pin had beenpressed. If the device is already ON at the alarm time, then it does nothing. 2 - the TRIZIUM wakes up in "alarm mode" if at the alarm time it was off,otherwise it remains fully operative. In both cases the TRIZIUM issues anunsolicited code every 3s:+ALARM: <text>Where <text> is the other +CALA parameter previously set.The device keeps on sending the unsolicited code every 3s until a #WAKE or#SHDN command is received or a 90s timeout occurs. If the device is in"alarm mode" and it does not receive the #WAKE command within 90s then itshuts down. (default) 3 - the TRIZIUM wakes up in "alarm mode" if at the alarm time it was off,otherwise it remains fully operative. In both cases the TRIZIUM starts playingthe alarm tone on the selected path for the ringer (see command #SRP)The device keeps on playing the alarm tone until a #WAKE or #SHDNcommand is received or a 90s timeout occurs. If the device is in "alarm mode"and it does not receive the #WAKE command within 90s then it shuts down. 4 - the TRIZIUM wakes up in "alarm mode" if at the alarm time it was off,otherwise it remains fully operative. In both cases the TRIZIUM brings the pinGPIO6 high, provided its <direction> has been set to alarm output, and keeps itin this state until a #WAKE or #SHDN command is received or a 90s timeoutoccurs. If the device is in "alarm mode" and it does not receive the #WAKEcommand within 90s then it shuts down. 5 - the TRIZIUM will make both the actions as for type=2 and type=3. 6 - the TRIZIUM will make both the actions as for type=2 and type=4. 7 - the TRIZIUM will make both the actions as for type=3 and type=4.<n> = 0 - index of the alarm The only value supported for <n> is 0.<text> - unsolicited alarm code text string In the case that <type> is equal to 2 or 5 or 6, then the unsolicited text parameter<text> can be set by this parameter.Note: The "alarm mode" is indicated by hardware pin CTS to the ON status and DSRto the OFF status, while the "power saving" status is indicated by a CTS - OFF andDSR - OFF status. The normal operating status is indicated by DSR - ON.](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-105.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 114 of 2025.4.7 Commands For GPRS5.4.7.1 +CGACT - PDP context activate or deactivate+ CGACT – PDP context activate or deactivateExecute commandRead commandAT+CGACT? Returns the current activation states for all the defined PDP contexts.Write commandAT+CGACT = <state>[,<cid>[, <cid>[,…]]]]The command is used to activate or deactivate the specified PDP context (s)Parameters:<state> - indicates the state of PDP context activation 0 - deactivated 1 - activated<cid> - a numeric parameter which specifies a particular PDP context definition(see +CGDCONT command)Test commandAT+CGACT=? Reports information on the supported PDP context activation states parameters in theformat: +CGACT: (0,1)Example AT+CGACT?+CGACT: 1,1OKAT+CGACT=1,1OKReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-114.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 116 of 2025.4.7.3 +CGDATA - Enter data state+ CGDATA – Enter data stateExecute commandAT+CGDATA = [<L2P>,[<cid> [,<cid> [,…]]]]The command causes to perform whatever actions are necessary to establishcommunication with the network using one or more GPRS PDP types.Parameters:<L2P> - string parameter that indicates the layer 2 protocol to be used "PPP" - PPP Point-to-point protocolIf the value is omitted, the layer 2 protocol is unspecified<cid> - numeric parameter which specifies a particular PDP context definition (see+CGDCONT command).Read commandWrite commandTest commandAT+CGDATA=? Requests information on the supported layer 2 protocols.Reports the supported <L2P> parameters valuesExample AT+CGDATA=?+CGDATA: (”PPP”)OKAT+CGDATA=”PPP”,1OKReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-116.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 117 of 2025.4.7.4 +CGDCONT - define PDP context+ CGDCONT – define PDP contextExecute commandRead commandAT+CGDCONT? Returns the current settings for each defined context in the format:+CGDCONT : <cid>,<PDP_type>,<APN>,<PDP_addr>,<d_comp>,<h_comp>,<pd1> [,…[,pdN]]]]]]]]]Write commandAT+CGDCONT = [<cid>[,<PDP_type>[,<APN>[,<PDP_addr>,<d_comp>[,<h_comp>[,<pd1>[,…[,pdN]]]]]]]]]The command specifies PDP context parameter values for a PDP context identifiedby the (local) context identification parameter, <cid>Parameters:<cid> (PDP Context Identifier) : a numeric parameter which specifies a particularPDP context definition. The range of permitted values (minimum value = 1) isreturned by the test form of the command.<PDP_type> (Packet Data Protocol type) : a string parameter which specifies thetype of packet data protocol "IP" - Internet Protocol "PPP" - Point to Point Protocol<APN> (Access Point Name) : a string parameter which is a logical name that is usedto select the GGSN or the external packet data network.If the value is null or omitted, then the subscription value will be requested.<PDP_address>: a string parameter that identifies the terminal in the addressspace applicable to the PDP. The allocated address may be read using the+CGPADDR command.<d_comp>: a numeric parameter that controls PDP data compression 0 - off (default if value is omitted) 1 - on<h_comp>: a numeric parameter that controls PDP header compression 0 - off (default if value is omitted) 1 - on<pd1>, … <pdN>: zero to N string parameters whose meanings are specific to the<PDP_type>Test commandAT+CGDCONT=? Returns values supported as a compound valueExample AT+CGDCONT?+CGDCONT: 1, ”IP”, ”uni.tim.it”, ”10.10.10.10”,0,0OKAT+CGDCONT=?+CGDCONT: (1-3),”IP”,,,(0-1),(0-1)OKAT+CGDCONT=1, ”IP”, ”uni.tim.it”, ”10.10.10.10”,0,0OKReference GSM 07.07SW release Version A5.4.7.5 +CGPADDR - show PDP address+ CGPADDR – show PDP addressExecute commandRead commandWrite commandAT+CGPADDR = [<cid>[,<cid> [,…]]]Returns a list of PDP addresses for the specified context identifiers in the format:+CGPADDR: <cid>,<PDP_addr>[<CR><LF>+CGPADDR: <cid>,<PDP_addr>]Parameters:](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-117.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 119 of 2025.4.7.6 +CGREG - GPRS network registration status+ CGREG – GPRS network registration statusExecute commandRead commandAT+CGREG? Returns the status of result code presentation mode <n> and the integer <stat> whichshows whether the network has currently indicated the registration of the terminal inthe format: +CGREG:<n>,<stat>.Write commandAT+CGREG = <n> The command controls the presentation of an unsolicited result code +CGREG:<stat>when <n>=1 and there is a change in the terminal GPRS network registration status,or an unsolicited code+CGREG: <stat>[,<lac>,<ci>]when <n>=2 and there is a change of the network cell.Parameter:<n> - result code presentation mode 0 - disable network registration unsolicited result code 1 - enable network registration unsolicited result code +CGREG: <stat> 2 - enable network registration and location information unsolicited result code +CGREG:<stat>[,<lac>,<ci>]where:<lac> - location area code in hexadecimal format (e.g. "00C3" equals 195 in decimal)<ci> - cell ID in hexadecimal format<stat> - registration status 0 - not registered, terminal is not currently searching a new operator to register to 1 - registered, home network 2 - not registered, but terminal is currently searching a new operator to register to 3 - registration denied 4 - unknown 5 - registered, roamingTest commandAT+CGREG=? Returns supported values for parameter <n>ExampleReference GSM 07.07SW release Future Software Release5.4.7.7 +CGQMIN - quality of service profile (minimum acceptable)+ CGQMIN – quality of service profile (minimum acceptable)Execute commandRead commandAT+CGQMIN? Returns the current settings for each defined context in the format:+CGQMIN: <cid>,<precedence>,<delay>,<reliability>,<peak>,<mean>ExampleWrite commandAT+CGQMIN = [<cid>[,<precedence > [,<delay>[,<reliability> [,<peak>[,<mean>]]]]]]This command allows to specify a minimum acceptable profile which is checked bythe terminal against the negotiated profile returned in the Activate PDP ContextAccept messageParameters:<cid> - PDP context identification (see +CGDCONT command).The following parameters are defined according to GSM 03.60:<precedence> - precedence class<delay> - delay class<reliability> - reliability class<peak> - peak throughput class](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-119.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 121 of 2025.4.7.8 +CGQREQ - quality of service profile (requested)+ CGQREQ – quality of service profile (requested)Execute commandRead commandAT+CGQREQ? Returns the current settings for each defined context in the format:+CGQREQ: <cid>,<precedence>,<delay>,<reliability>,<peak>,<mean>Write commandAT+CGQREQ = [<cid>[,<precedence > [,<delay>[,<reliability> [,<peak>[,<mean>]]]]]]The command allows to specify a Quality of Service Profile that is used when theterminal sends an Activate PDP Context Request message to the network. It specifiesa profile for the context identified by the (local) context identification parameter,<cid>.Parameters:<cid> - PDP context identification (see +CGDCONT command).The following parameters are defined according to GSM 03.60:<precedence> - precedence class<delay> - delay class<reliability> - reliability class<peak> - peak throughput class<mean> - mean throughput classIf a value is omitted for a particular class then this class is not checked.Test commandAT+CGQREQ=? Returns parameter values supported as a compound value.Example AT+CGQREQ?+CGQREQ: 1,0,0,3,0,0OKAT+CGQREQ=1,0,0,3,0,0OKAT+CGQREQ=?+CGQREQ: (0-3),(0-3),(0-5),(0-9),(0-19,31)OKReference GSM 07.07SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-121.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 127 of 2025.5.1.8 +CSCB – Select Cell Broadcast Message types+CSCB –select Cell Broadcast Message typesExecute commandRead commandAT+CSCB? Reports the current value of the parameters <mode>,<misd> and <dcss> in theformat:+CSCB: <mode>,<mids>,<dcss>Write commandAT+CSCB=<mode>[,<mids>[,<dcss>]] Selects the Cell Broadcast message types to be received by the device.Parameter:<mode> 0 - the message types defined by <mids> and <dcss> are accepted 1 - the message types defined by <mids> and <dcss> are rejected<mids> : all the possible combinations of the CBM identifiers<dcss> : all the possible combinations of CBM data coding schemes.Test commandAT+CSCB=? Return the possible range of values for the parameter <mode>.Example AT+CSCB?+CSCB: 1,"","" (all CBMs are accepted, none is rejected)OKAT+CSCB=0,"0,1,300-315,450","0-3"OKReference GSM 07.05SW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-127.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 130 of 2025.5.3 Message receiving and reading5.5.3.1 +CNMI - new message indications to Terminal Equipment+CNMI – new message indications to terminal equipmentRead command AT+CNMI? Returns the current parameter settings for +CNMI command in the form:AT+CNMI:<mode>,<mt>,<bm>,<ds>,<bfr>Write commandAT+CNMI=<mode>[,<mt>[,<bm>[,<ds>[,<bfr>]]]] Selects the behavior of the device on how the receiving of new messages from thenetwork is indicated to the DTE.Parameter:<mode>- unsolicited result codes buffering option 0 - Buffer unsolicited result codes in the TA. If TA result code buffer is full,indications can be buffered in some other place or the oldest indications may bediscarded and replaced with the new received indications. 1 - Discard indication and reject new received message unsolicited result codeswhen TA-TE link is reserved, otherwise forward them to the TE. 2 - Buffer unsolicited result codes in the TA in case the DTE is busy and flushthem to the TE after reservation. Otherwise forward them directly to the TE.<mt> result code indication reporting for SMS-DELIVER 0 - No SMS-DELIVER indications are reported to the TE. 1 - If SMS-DELIVER is stored into ME/TA, indication of the memory locationis reported to the TE using unsolicited result code: +CMTI: <memr>,<index> where: <memr> - memory storage where the new message is stored ("SM" or "ME") <index> - location on the memory where SMS is stored 2 - SMS-DELIVERs (except class 2 messages and messages in the messagewaiting indication group) are reported to the TE using unsolicited result code: +CMT: [<alpha>],<length><CR><LF><pdu>(PDU mode) where: <alpha> - alphanumeric representation of originator/destination number corresponding to the entry found in MT phonebook. <length> - PDU length <pdu> - PDU message or +CMT:<oa>,[<alpha>],<scts>[,<tooa>,<fo>,<pid>,<dsc>,<sca>,<tosca>,<length>]<CR><LF><data> (text mode enabled; aboutparameters in italic, refer command +CSDH) where: <oa> - originator address number <alpha> - alphanumeric representation of <oa> or <da> <scts> - arrival time of the message to the SC <tooa>, <tosca> - type of number <oa> or <sca> 145 - number in international format (contains the "+") 129 - number in national format <fo> - first octet of GSM 03.40 <pid> - Protocol Identifier <dsc> - Data Coding Scheme <sca> - Service Centre number <length> - text length <data>- text mode](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-130.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 133 of 2025.5.3.2 +CMGL - list messages+CMGL – list messagesExecute commandRead commandWrite commandAT+CMGL = <stat> Reports the list of all the messages stored into <memr> (see command +CPMS )memory storage having the status equal to <stat> parameter.Parameter (PDU Mode):<stat> 0 - new message 1 - read message 2 - stored message not yet sent 3 - store message already sent 4 - all messages (applies only to +CMGL command)A report is sent for each message that has to be listed in the format:+CMGL: <index>,<stat>,<length><CR><LF><pdu>where<index> - message position in the memory storage list.<stat> - status of the message<length> - length of the PDU in bytes<pdu> - message in PDU format according to GSM 3.40Note: OK message is sent only at the end of the listing.Parameter (Text Mode):<stat> "REC UNREAD" - new message "REC READ" - read message "STO UNSENT" - stored message not yet sent "STO SENT" - store message already sent "ALL" - all messages (applies only to +CMGL command)A report is sent for each message that has to be listed in the format:+CMGL: <index>,<stat>,<oa/da>[,,,<tooa/toda>,<length>]<CR><LF><text>where<index> - message position in the storage<stat> - message status<oa/da> - originator/destination number< tooa/toda > - type of number <oa/da> 145 - number in international format (contains the "+") 129 - number in national format<length> - text length<text> - message textFor each message delivery confirm a result code is reported in the format:+CMGL: <index>,<stat>,<fo>,<mr>,,,<scts>,<dt>,<st>Where<index> - message position in the storage<stat> - message status<fo> - first octet of the message PDU<mr> - message reference number<scts> - arrival time of the message to the SC<dt> - sending time of the message<st> - message status as coded in the PDU](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-133.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 135 of 2025.5.3.3 +CMGR - read message+CMGR – read messageExecute command AT+CMGR =<index> Reports the message with location value <index> from preferred message storage<memr> (see +CPMS) in the format:(PDU Mode)+CMGR: <stat>,<length><CR><LF><pdu>where<stat> - status of the message 0 - new message 1 - read message 2 - stored message not yet sent 3 - store message already sent<length> - length of the PDU in bytes.<pdu> - message in PDU format according to GSM 3.40.(Text Mode)For the sent messages:+CMGR: <stat>,<oa>,,<scts> [,<tooa>,<fo>,<pid>,<dcs>,<sca>,<tosca>,<length>]<CR><LF><text>For the received messages:+CMGR: <stat>,<da>[,,<toda>,<fo>,<pid>,<dcs>,,<sca>,<tosca>,<length>]<CR><LF><testo>For the message delivery confirm:+CMGR: <stat>,<fo>,<mr>,,,<scts>,<dt>,<st>Where:<stat> - status of the message "REC UNREAD" - new received message unread "REC READ" - received message read "STO UNSENT" - message stored not yet sent "STO SENT" - message stored already sent<fo> - first octet of the message PDU<mr> - message reference number<scts> - arrival time of the message to the SC<dt> - sending time of the message<st> - message status as coded in the PDU<pid> - Protocol Identifier<dcs> - Data Coding Scheme<oa> - Originator address number<da> - Destination address number<sca> - Service Centre number< tooa>,<toda >,<tosca> - type of number <oa>,<da>,<sca> 145 - number in international format (contains the "+") 129 - number in national format<length> - text length<text> - message textThe status of the message and entire message data unit <pdu> is returned. If statusof the message is 'received unread', status in the storage changes to 'receivedread'.Parameter: <index>Note: if record number <index> on message storage memory is empty, then an](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-135.png)
Writes in the <memw> memory storage a new SMS message input as a PDU.Parameter:<length> - represents the length of the PDU to be written in bytes.The device responds to the command with the prompt '>' and awaits for the numberof bytes of PDU specified.To complete the operation send Ctrl-Z char (0x1A hexadecimal) , to exit withoutwriting the message send ESC char (0x1B hexadecimal).If message is successfully written in the memory, then the result is sent in theformat:+CMGW: <index>where <index> is the message location index in the memory <memw>("SM").If message storing fails for some reason, an error code is reported(Text Mode)Writes in the <memw> memory storage a new SMS message input as Text.Parameter:<da> - destination address numberThe device responds to the command with the prompt '>' and awaits for the messagetext ( max 160 characters).To complete the operation send Ctrl-Z char (0x1A hexadecimal) , to exit withoutwriting the message send ESC char (0x1B hexadecimal).If message is successfully written in the memory, then the result is sent in theformat:+CMGW: <index>where <index> is the message location index in the memory <memw>("SM").If message storing fails for some reason, an error code is reportedNote: Care must be taken to ensure that during the command execution, no otherSIM interacting commands are issued.To avoid malfunctions is suggested to wait for the +CMGS:<mr> or +CMSERROR:<err> response before issuing further commands.Read commandWrite commandTest commandExampleReference GSM 07.05SW release Version A5.5.4.4 +CMGD - delete message+CMGD – delete messageExecute commandAT+CMGD =<index>[,<delflag>] Deletes from memory the message/messagesNote: if the location to be deleted is empty, an error message is reported.Parameter:<index> - message position index in the selected storage <memr><delflag> - delete mode selection flag 0 (or not present) - delete message at position <index> 1 - delete all received read messages 2 - delete all received read and all sent messages](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-139.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 143 of 2025.6.1.7 #SRS - Select ringer sound#SRS – select ringer soundExecute command AT#SRS =<n>[,<timeout>] Set the ringer sound. The parameters are:<n> - ringing tone 0 - current ringing tone 1 .. 12 - ringing tone number<timeout> ringing tone playing timeout in seconds. 0 - no ringing tone playing, only tone setting 1 .. 60 - <n> tone playing for <timeout> seconds and successive tone setting.Note: When the command is issued with <timeout> >0, the <n> ringing tone isplayed for <timeout> seconds and then stored as current tone.If command is issued with <timeout> = 0, the playing of the ringing is stopped (ifpresent) and <n> ringing tone is set as default.If command is issued with <n> = 0 and <timeout> >0 then the default ringing tone isplayed.If both <n> and <timeout> are 0 then currently playing tone is set as default andringing is stopped.Read command AT#SRS?Reports current selected ringing and its status in the form:#SRS: <n>,<status>where:<n> ringing tone number 1 .. 12<status> ringing status 0 - selected but not playing 1 - currently playingWrite commandTest commandAT#SRS=? Reports the supported values for the parameters <n> and <timeout>ExampleReference Telit TRIZIUM AT Command SpecificationSW release Version A](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-143.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 154 of 2025.6.1.18 #MONI – Monitor Cells#MONI – monitor cellExecute command AT#MONI Reports the available data for cell and dedicated channel (if exists) in the format:#MONI: <netname> BSIC:<bsic> RxQual:<qual> LAC:<lac> Id:<id>ARFCN:<arfcn> PWR:<dBm> dBmor in the case the network name is not known:#MONI: Cc:<cc> Nc:<nc> BSIC:<bsic> RxQual:<qual> LAC:<lac> Id:<id>ARFCN:<arfcn> PWR:<dBm> dBmor in the case in which the data of the adjacent cell are under observation(number>0):#MONI: Adj Cell<n> [LAC:<lac> Id:<id>] ARFCN:<arfcn> PWR:<dBm> dBmwhere:netname = name of network operatorcc = country codenc = network operator coden = progressive number of adjacent cellbsic = base station identification codequal = quality of reception (0-7)lac = localization area codeid = cell identifierarfcn = assigned radio channeldBm = received signal strength in dBmRead commandWrite commandAT#MONI =<number> Set the neighbor cell to extract data of the cell number <number>Parameter: <number>Test command AT#MONI=? Reports the available neighbour cells and current cell preset in the format: #MONI:<CellNo, CellSet>where:<CellNo> - neighbour cells number<CellSet> - cell preset = 0, …, n where 0 is the serving cellExampleNote The refresh time of the measures is preset to 3 secReference Telit TRIZIUM AT Command SpecificationSW release Version A5.6.1.19 #QSS – Query SIM Status#QSS – query SIM statusExecute commandRead commandAT#QSS? Reports the query SIM status in the format:#QSS: <mode>,<status>where<mode>: type of enabled notification<mode> = 0 - query only<mode> = 1 - send unsolicited indication (#USS) every change of state<status>: current SIM status<status> = 0 - SIM NOT INSERTED<status> =1 - SIM INSERTEDWrite command](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-154.png)
![Telit TRIZIUM Product Description80264ST10007a Rev. 4– 09/09/04Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 194 of 2025.11 Jammed Detect & Report Extension5.11.1 OverviewThe Jammed Detect & Report feature allows a Telit TRIZIUM to detect the presence of adisturbing device such as a Communication Jammer and give indication to the user and/or send areport of that to the network.This feature can be very important in alarm, security and safety applications that rely on the modulefor the communications. In these applications, the presence of a Jammer device can compromise thewhole system reliability and functionality and therefore shall be recognized and reported either tothe local system for countermeasure actions or to the network providing remote actions.An example scenario could be an intrusion detection system that uses the Telit TRIZIUM forsending the alarm indication for example with an SMS to the system owner, and a thief incomesusing a Jammer to prevent any communication between the GSM module and the network.In such a case, the Telit TRIZIUM detects the Jammer presence even before the break in and cantrigger an alarm siren, other communication devices (PSTN modem) or directly report thiscondition to the network that can provide further security services for example sending SMS to theowner or police.5.11.2 Jammed Detect & Report custom AT commands5.11.2.1 #JDR - Jammed Detect & Report#JDR - Jammed Detect & ReportExecute commandRead commandAT#JDR? Reports the current settings of the command, in the format:#JDR: <mode>,<MNPL>,<DCMN>Write commandAT#JDR = <mode>[,<MNPL>,<DCMN>]This command allows to control the Jammed Detect & Report feature.The TRIZIUM can Detect if a communication Jammer is active in its range and giveindication to the user of this condition either on the serial line with an unsolicitedcode or on a dedicated GPIO by rising it.The TRIZIUM can also report to the network the Jammed status condition, even ifnormal communications are inhibited by the Jammer, by using a unique message.Parameter:<mode> - behavior mode of the Jammed Detect & Report 0 - Jammed Detect & Report DISABLED (Default) 1 - the Jammed Detect is active and the Jammed condition is reported on pinGPIO1/JDR GPIO1/JDR LOW - Normal Operating Condition GPIO1/JDR HIGH - Jammed Condition. 2 - the Jammed Detect is active and the Jammed condition is reported with a singleunsolicited code on serial line whose format is: #JDR: JAMMED - Jammed condition detected #JDR: OPERATIVE - Normal Operating condition restored. Note: the #JDR: OPERATIVE code will show only after a jammed condition](https://usermanual.wiki/Telit-Communications-S-p-A/TRIZIUM/User-Guide-530579-Page-194.png)
