Content for  TS 27.007  Word version:  18.5.0

This command allows control of the Closed User Group supplementary service (refer TS 22.085). Set command enables the served subscriber to select a CUG index, to suppress the Outgoing Access (OA), and to suppress the preferential CUG. Set command with <n>=1 enables to control the CUG information on the air interface as a default adjustment for all following outgoing calls. The interaction of this command with other commands based on other supplementary services is described in the specification of the relevant supplementary service. Read command returns the current settings.

<n> <index> <info>

Optional. This command is superfluous when the command +CECUG is supported.

This command allows control of the call forwarding supplementary service according to TS 22.082. Registration, erasure, activation, deactivation, and status query are supported. When querying the status of a network service (<mode>=2) the response line for 'not active' case (<status>=0) should be returned only if service is not active for any <class>. Refer to clause 9.2 for possible <err> values. Test command returns reason values supported as a compound value.

<reason> <mode> <number> <type> <subaddr> <satype> <classx> <time> <status>

Mandatory for MT supporting AT commands only and not supporting the control through dial command D.

This command allows control of the supplementary service Call Waiting according to TS 22.083 and Communication Waiting according to TS 24.607. Activation, deactivation and status query are supported. When querying the status of a network service (<mode>=2) the response line for 'not active' case (<status>=0) should be returned only if service is not active for any <class>. Refer to clause 9.2 for possible <err> values. Parameter <n> is used to disable/enable the presentation of an unsolicited result code +CCWA: <number>,<type>,<class>,[<alpha>][,<CLI_validity>[,<subaddr>,<satype>[,<priority>]]] to the TE when call waiting service is enabled. The unsolicited result code +CCWA does not support numbers of the SIP URI format. The call waiting information can also be reported in unsolicited result codes +CMCCSS<x> / +CMCCSSEND, enabled with +CMCCS=3 (see AT command monitor of current calls +CMCCS). The unsolicited result codes +CMCCSS<x> / +CMCCSSEND support numbers of the SIP URI format. Command should be abortable when network is interrogated. Read command returns the current value of <n>. Test command returns values supported as a compound value.

<n> <mode> <classx> <status> <number> <type> <alpha> <CLI_validity> <subaddr> <satype> <priority>

Optional.

This command allows the control of the following call related services:

• a call can be temporarily disconnected from the MT but the connection is retained by the network;
• multiparty conversation (conference calls);
• the served subscriber who has two calls (one held and the other either active or alerting) can connect the other parties and release the served subscriber's own connection.

Calls can be put on hold, recovered, released, added to conversation, and transferred similarly as defined in TS 22.030. Refer to clause 9.2 for possible <err> values. This is based on the supplementary services HOLD (Call Hold; refer to clause 2 of TS 22.083 and TS 24.610), MPTY / CONF (MultiParty; refer TS 22.084 and Conference; refer TS 24.605) and ECT (Explicit Call Transfer; refer TS 22.091 and TS 24.629). Test command returns a list of operations which are supported. The call number required by some operations shall be denoted by "x" (e.g. +CHLD: (0,1,1x,2,2x,3)).

<n>

Optional.

This refers to a service that causes an incoming alerting call to be forwarded to a specified number. Action command does this. Refer to clause 9.2 for possible <err> values. This is based on the supplementary service CD (Call Deflection; refer TS 22.072). The interaction of this command with other commands based on other supplementary services is described in the specification of the relevant supplementary service.

<number> <type> <subaddr> <satype>

Optional.

This command allows control of the Unstructured Supplementary Service Data (USSD) according to TS 22.090, TS 24.090 and TS 24.390. Both network and mobile initiated operations are supported. Parameter <n> is used to disable/enable the presentation of an unsolicited result code. The value <n>=2 is used to cancel an ongoing USSD session. For an USSD response from the network, or a network initiated operation, the format is: +CUSD: <m>[,<str>,<dcs>]. When <str> is given, a mobile initiated USSD-string or a response USSD-string to a network initiated operation is sent to the network. The response USSD-string from the network is returned in a subsequent unsolicited +CUSD result code. Refer to clause 9.2 for possible <err> values. The interaction of this command with other commands based on other supplementary services is described in the specification of the relevant supplementary service. Read command returns the current value of <n>. Test command returns values supported as a compound value.

<n> <str> <dcs> <m>

Optional.

This refers to Advice of Charge supplementary service (TS 22.024 and TS 22.086) that enables subscriber to get information about the cost of calls. With <mode>=0, the execute command returns the current call meter value from the MT. The command also includes the possibility to enable/disable reporting of the CCM information with unsolicited result code +CCCM: <ccm>. When enabled, this unsolicited result code is sent when the CCM value changes, but not more frequently than at every 10 seconds. Refer to clause 9.2 for possible <err> values. Read command indicates whether the unsolicited reporting is activated or not. Test command returns the supported mode values as a compound value.

<mode> <ccm>

Optional.

This command refers to supplementary service related network initiated notifications. The set command enables/disables the presentation of notification result codes from TA to TE. When <n>=1 and a supplementary service notification is received after a mobile originated call setup, intermediate result code +CSSI: <code1>[,[<index>][,<SS_code>]] is sent to TE before any other MO call setup result codes presented in the present document or in ITU-T Recommendation V.250 [14]. When several different <code1>s are received from the network, each of them shall have its own +CSSI result code. When <m>=1 and a supplementary service notification is received during a mobile terminated call setup or during a call, or when a forward check supplementary service notification is received, unsolicited result code +CSSU: <code2>[,<index>[,[<number>],[<type>][,[<subaddr>],[<satype>]][,<SS_code>]]] is sent to TE. In case of MT call setup, result code is sent after every +CLIP result code (refer command Calling line identification presentation +CLIP) and when several different <code2>s are received from the network, each of them shall have its own +CSSU result code. <code2>=5 does not reflect any supplementary service, and the parameter <SS_code> will not be provided. The supplementary service notification can also be reported in unsolicited result codes +CMCCSS<x> / +CMCCSSEND, enabled with +CMCCS=3 (see AT command monitor of current calls +CMCCS). The unsolicited result codes +CMCCSS<x> / +CMCCSSEND support numbers of the SIP URI format. Read command returns the current settings. Test command returns values supported as a compound value.

<n> <m> <code1> <index> <SS_code> <code2> <number> <type> <subaddr> <satype>

Optional.

Returns list of current calls of MT. If command succeeds but no calls are available, no information response is sent to TE. Refer to clause 9.2 for possible <err> values. See also AT command +CLCCS.

<ccidx> <dir> <stat> <mode> <mpty> <number> <type> <alpha> <priority> <CLI validity>

Optional. Recommended when +CHLD command is implemented. When +CDU is supported and SIP URIs are used in the MT, the AT command +CLCC is fully replaced by +CLCCS.

This command is used to edit the PLMN selector with Access Technology lists in the SIM card or active application in the UICC (GSM or USIM). Execute command writes an entry in the SIM/USIM list of preferred PLMNs, previously selected by the command +CPLS. If no list has been previously selected, the User controlled PLMN selector with Access Technology, EFPLMNwAcT, is the one accessed by default. If <index> is given but <oper> is left out, entry is deleted. If <oper> is given but <index> is left out, <oper> is put in the next free location. If only <format> is given, the format of the <oper> in the read command is changed. The Access Technology selection parameters, <GSM_AcT>, <GSM_Compact_AcT>, <UTRAN_AcT>, <E-UTRAN_AcT> and <NG-RAN_AcT> are required when writing User controlled PLMN selector with Access Technology, EFPLMNwAcT, Operator controlled PLMN selector with Access Technology EFOPLMNwAcT and HPLMN selector with Access Technology EFHPLMNwAcT, see TS 31.102. Refer to clause 9.2 for possible <err> values. Read command returns all used entries from the SIM/USIM list of preferred PLMNs, previously selected by the command +CPLS, with the Access Technologies for each PLMN in the list. Test command returns the whole index range supported by the SIM as compound values.

<indexn> <format> <opern> <GSM_AcTn> <GSM_Compact_AcTn> <UTRAN_AcTn> <E-UTRAN_AcTn> <NG-RAN_AcTn>

Optional.