Content for TS 23.078 Word version: 19.0.0
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4.6.2 gsmSCF to gsmSSF information flows
4.6.2.1 Activity Test
4.6.2.2 Apply Charging
4.6.2.3 Call Gap
4.6.2.4 Call Information Request
4.6.2.5 Cancel
4.6.2.5A Collect Information
4.6.2.6 Connect
4.6.2.7 Connect To Resource
4.6.2.8 Continue
4.6.2.9 Continue With Argument
4.6.2.10 Disconnect Forward Connection
4.6.2.11 Disconnect Forward Connection With Argument
4.6.2.12 Disconnect Leg
4.6.2.13 Establish Temporary Connection
4.6.2.14 Furnish Charging Information
4.6.2.15 Initiate Call Attempt
4.6.2.16 Move Leg
4.6.2.17 Play Tone
4.6.2.18 Release Call
4.6.2.19 Request Report BCSM Event
4.6.2.20 Reset Timer
4.6.2.21 Send Charging Information
4.6.2.22 Split Leg
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4.6.2 gsmSCF to gsmSSF information flows p. 488
4.6.2.1 Activity Test p. 488
4.6.2.1.1 Description p. 488
This IF is used to check for the continued existence of a relationship between the gsmSCF and gsmSSF. If the relationship is still in existence, then the gsmSSF will respond. If no reply is received, then the gsmSCF will assume that the gsmSSF has failed in some way and will take appropriate action.
4.6.2.1.2 Information Elements p. 488
This IF contains no information elements.
4.6.2.2 Apply Charging p. 488
4.6.2.2.1 Description p. 488
This IF is used to instruct the gsmSSF to apply charging mechanisms to control the call duration.
4.6.2.2.2 Information Elements p. 489
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| ACh Billing Charging Characteristics | M | M | M | M | M | M | M | This IE specifies the charging related information to be provided by the gsmSSF and the conditions on which this information has to be provided back to the gsmSCF. |
| Party To Charge | M | M | M | M | M | M | M | This IE shall be reflected in the corresponding IE of the Apply Charging Report IF. This IE has no effect on the charging procedures in the MSC. |
| ACh Charging Address | M | M | M | M | M | M | M | This IE identifies the call party to which the Apply Charging IF applies. This IE is described in a Table below. |
ACh Billing Charging Characteristics contains the following information element:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Time Duration Charging | M | M | M | M | M | M | M | This IE is described in a Table below. |
Time Duration Charging contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Max Call Period Duration | M | M | M | M | M | M | M | This IE indicates the maximum call period duration timer. |
| Tariff Switch Interval | O | O | O | O | O | O | O | This IE indicates the tariff switch time until the next tariff switch applies for this call leg. |
| Release If Duration Exceeded | O | O | O | O | O | O | O | This IE indicates that the call leg, SRF connection or Temporary connection shall be released when the Max call Period Duration expires. The cause used in the Release IF shall be "normal unspecified". The default handling is to continue the call. |
| Audible Indicator | O | - | O | O | O | O | O | This IE is described in a Table below. |
Audible Indicator IE contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Tone | E | - | E | E | E | E | E | This IE indicates that a fixed sequence of tones shall be played to the CAMEL subscriber. In the NC case, the first party created will receive the warning tone. In the TO case the calling party will receive the warning tone. If present, this IE indicates that 30 seconds before the Max Call Period Duration timer expires, a fixed sequence of tones consisting of 3 tones of 900 Hz, with a 200 milliseconds tone duration and a 200 milliseconds intertone duration shall be played. |
| Burstlist | E | - | E | E | E | E | E | This IE is described in the Table below. This IE indicates a variable sequence of bursts that shall be played during the call period to the CAMEL subscriber. In the NC case, the first party created will receive the warning tone. In the TO case the calling party will receive the warning tone. |
Burstlist IE contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Warning Period | M | This IE indicates the time, before the Max Call Period Duration timer expires, when the Play Burst List IE shall start. |
| Number Of Bursts | M | This IE indicates the number of bursts to be played. There may be up to three bursts. |
| Burst Interval | M | This IE indicates the time interval between successive bursts. |
| Number Of Tones In Burst | M | This IE indicates the number of tones to be played in each burst. There may be up to three tones per burst. The tone is fixed to 900 Hz. |
| Tone Duration | M | This IE indicates the duration of a tone in a burst. |
| Tone Interval | M | This IE indicates the time interval between successive tones in a burst. |
ACh Charging Address contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Leg ID | E | E | E | E | E | E | E | This IE indicates that the Apply Charging IF applies to the specified leg. |
| SRF Connection | E | E | E | E | E | E | E | This IE indicates that the Apply Charging IF applies to the Temporary Connection or SRF Connection |
4.6.2.3 Call Gap p. 490
4.6.2.3.1 Description p. 490
This IF is used to activate/modify/remove a call gap mechanism in the gsmSSF. The call gap mechanism is used to reduce the rate at which specific service requests are sent to a gsmSCF.
A Call Gap IF can only be sent on an opened dialogue between a gsmSCF and a gsmSSF.
It is possible to have several call gapping conditions applicable to the same gsmSSF (i.e. each conditions was activated for a defined Service (identified by the service Key) by a defined gsmSCF (identified by the gsmSCF address).
4.6.2.3.2 Information Elements p. 490
| Information element name | Status | Description |
|---|---|---|
| Gap Criteria | M | This IE specifies the criteria for a call to be subject to call gapping. |
| Gap Indicators | M | This IE indicates the gapping characteristics. |
| Control Type | O | This IE indicates the reason for activating call gapping. The value "gsmSCF Overloaded" indicates that an automatic congestion detection and control mechanism in the gsmSCF has detected a congestion situation. The value "Manually Initiated" indicates that the service and/or network/service management centre has detected a congestion situation, or any other situation that requires manually initiated controls. The Control Type "Manually Initiated" will have priority over a "gsmSCF Overloaded" call gap. Note that Non-IN controlled traffic control mechanism can also apply to an exchange with the gsmSSF functionality. As the non-IN controlled traffic control is within the MSC, this traffic control has implicit priority over the IN controlled traffic control. The non-IN controlled traffic control may also have some influence on the IN call. Therefore it is recommended to take measures to coordinate several traffic control mechanisms. The non-IN controlled traffic control and co-ordination of several traffic control mechanisms are out of the scope of the present document. |
| Gap Treatment | O | This IE indicates how calls that were rejected due to the call gapping condition and have Default Call Handling as "Release Call" shall be treated. |
Gap Criteria contains one of the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Basic Gap Criteria | O,E | This IE is a choice of various basic criteria. |
| Compound Gap Criteria | O,E | This IE is a choice of various criteria including a gsmSCF ID. |
Compound Gap Criteria contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Basic Gap Criteria | M | This IE is a choice of various criteria. |
| gsmSCF ID | O | This IE contains the address of the gsmSCF which initiated the Call Gapping. |
Basic Gap Criteria contains one of the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Called Address | O,E | This IE contains a string of digits. For each call attempt where the leading digits of the dialled number match this specific value, the call gapping treatment shall be applied to the call. |
| Service | O,E | This IE contains a service key value. For each call attempt where the service key match this specific value, the call gapping treatment shall be applied to the call. |
| Called Address And Service | O,E | This IE contains a specific string of digits and a service key value. For each call attempt where the leading digits of the dialled number and the service key of a call match these specific values, the call gapping treatment shall be applied to the call. |
| Calling Address And Service | O,E | This IE contains a specific string of digits and a service key value. For each call attempt where the leading digits of the calling party number and the service key match these specific values, the call gapping treatment shall be applied to the call. |
Gap Indicators contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Duration | M | This IE specifies the total time interval during which call gapping for the specified gap criteria will be active. A duration of 0 indicates that gapping is to be removed. A duration of -2 indicates a network specific duration. Other values indicate the duration in seconds. |
| Interval | M | This IE specifies the minimum time between calls being allowed through. An interval of 0 indicates that calls meeting the gap criteria are not to be rejected. An interval of -1 indicates that all calls meeting the gap criteria are to be rejected. Other values indicate the interval in milliseconds. |
Gap Treatment contains one of the following elements:
| Information element name | Status | Description |
|---|---|---|
| Information To Send | O,E | This IE indicates an announcement or a tone to be sent to the calling party. At the tone or announcement, the call shall be released. |
| Release Cause | O,E | If the call is to be released, this IE indicates the specific cause value to be sent in the Release IF. See ETSI EN 300 356-1 [40] for the coding. |
Information To Send contains one of the following elements:
| Information element name | Status | Description |
|---|---|---|
| In-band Info | O,E | This IE specifies the in-band information to be sent. |
| Tone | O,E | This IE specifies a tone to be sent to the end-user. |
In-band Info contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Message ID | M | This IE is described in a Table below. This IE indicates the message(s) to be sent. |
| Message Duration | O | This parameter indicates the maximum time in seconds that the message shall be played/repeated. ZERO indicates endless repetition. |
Message Id contains the following element:
| Information element name | Status | Description |
|---|---|---|
| Elementary Message ID | O | This IE indicates a single announcement. |
4.6.2.4 Call Information Request p. 492
4.6.2.4.1 Description p. 492
This IF is used to request the gsmSSF to record specific information about a single call party and report it to the gsmSCF (with a Call Information Report IF).
4.6.2.4.2 Information Elements p. 492
| Information element name | Status | Description |
|---|---|---|
| Requested Information Type List | M | This IE is described in a Table below. This IE specifies a list of specific items of information which are requested.|
| Leg ID | M | This IE indicates the party in the call for which the information shall be collected. |
Requested Information Type List contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Call Attempt Elapsed Time | O | This IE indicates that the Call Attempt Elapsed Time is requested in the Call Information Report. Call Attempt Elapsed Time is the duration between the end of the CAMEL processing initiating call setup (Connect, Continue or Continue With Argument IF) and the received answer indication from the called party side. For the Calling Party, the value of Call Attempt Elapsed Time in the Call Information Report shall be set to 0. |
| Call Stop Time | O | This IE indicates that the Call Stop Time is requested in the Call Information Report. Call Stop Time is the time stamp when the connection is released. |
| Call Connected Elapsed Time | O | This IE indicates that the Call Connected Elapsed Time is requested in the Call Information Report. Call Connected Elapsed Time is the duration between the received answer indication from the called party side and the release of the connection. For a Calling Party, it indicates the duration between the sending of the Initial DP IF and the release of that party. |
| Release Cause | O | This IE indicates that the Release Cause for the call party is requested in the Call Information Report. |
4.6.2.5 Cancel p. 492
4.6.2.5.1 Description p. 492
This IF is used by the gsmSCF to request the gsmSSF to cancel all EDPs and reports.
4.6.2.5.2 Information Elements p. 492
| Information element name | Status | Description |
|---|---|---|
| All Requests | M | This IE indicates that all active requests for the Event Report BCSM, Apply Charging Report and Call Information Report IFs shall be cancelled. |
4.6.2.5A Collect Information |R7| p. 493
4.6.2.5A.1 Description p. 493
This IF is used to instruct the gsmSSF to collect additional dialled digits from the calling party and report them to the gsmSCF. The use of this operation is only appropriate for a call which has not yet left the set-up phase.
4.6.2.5A.2 Information Elements p. 493
This IF contains no information elements.
4.6.2.6 Connect p. 493
4.6.2.6.1 Description p. 493
This IF is used to request the gsmSSF to perform the call processing actions to route a call to a specific destination. To do so, the gsmSSF may use destination information from the calling party and existing call set-up information depending on the information provided by the gsmSCF.
The gsmSCF shall not send this IF when there is a CSA with a single call segment which includes only leg 1.
4.6.2.6.2 Information Elements p. 493
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Alerting Pattern | - | - | O | O | - | - | - | This IE indicates the kind of Alerting Pattern to be applied. |
| Calling Partys Category | O | O | O | O | O | O | O | This IE indicates the type of calling party (e.g., operator, pay phone, ordinary subscriber). |
| Destination Routing Address | M | M | M | M | M | M | M | This IE contains the called party number towards which the call is to be routed. The NatureOfAddress indicator may contain a national-specific value. For some national-specific NatureOfAddress indicator values the length of the digit part of the destination address may be zero. The gsmSCF may use national-specific NatureOfAddress indicator values of the gsmSSF country. |
| Generic Number | O | O | O | O | O | O | O | This IE contains the generic number. Its used to convey the additional calling party number, which e.g. could be used to modify the calling line ID presented to the called user. |
| Carrier | O | O | O | O | O | O | O | This IE is described in a Table below. |
| NA Originating Line Information | O | O | O | O | O | O | O | This IE identifies the type of number in the Charge Number (e.g. subscriber versus PLMN operator number). |
| Charge Number | O | O | O | O | O | O | O | This IE identifies the chargeable number for the usage of a North American carrier. |
| O-CSI Applicable | - | - | O | O | - | - | - | This IE indicates that the O-CSI, if present shall be applied on the outgoing leg. |
| Suppress N-CSI | - | - | - | - | - | - | O | This IE indicates that N-CSI, if present, shall be suppressed for the trunk originated call. |
| Original Called Party ID | O | O | O | O | O | O | O | This IE carries the dialled digits if the call has met call forwarding on route to the gsmSSF or is forwarded by the gsmSCF. |
| Leg To Be Connected | S | S | S | S | S | S | S | This IE indicates the leg to which the Connect IF applies.
The gsmSCF shall include this IE if:
|
| Redirecting Party ID | O | O | O | O | O | O | O | This IE indicates the directory number the call was redirected from. |
| Redirection Information | O | O | O | O | O | O | O | This IE contains forwarding related information, such as redirecting counter. |
| Suppression Of Announcements | - | - | O | O | O | O | - | This IE indicates that announcements or tones generated as a result of unsuccessful call establishment shall be suppressed. |
| Service Interaction Indicators Two | O | O | O | O | O | O | O | This IE is described in a Table below. |
| CUG Interlock Code | O | O | O | O | O | O | O | See TS 23.085 for details of this IE. |
| Outgoing Access Indicator | O | O | O | O | O | O | O | See TS 23.085 for details of this IE. |
| Basic OR interrogation requested | O | O | - | - | O | O | O | This IE indicates that a Basic Optimal Routeing interrogation is requested for the call. If Basic Optimal Routeing is successful, this will be reported to the gsmSCF in the Answer event report. This IE shall be ignored if the VMSC associated with the gsmSSF does not support Basic Optimal Routeing. This IE shall be ignored if it is received in a gsmSSF which is handling the MF call case in the GMSC function of the forwarding subscriber. |
Carrier contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Carrier Identification Code | M | M | M | M | M | M | M | This IE uniquely identifies a North American long distance carrier. |
| Carrier Selection Information | M | M | M | M | M | M | M | This IE indicates the way the carrier was selected e.g.:
|
Service Interaction Indicators Two contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Forward Service Interaction Indicator | O | O | O | O | O | O | O | This IE is described in a Table below. |
| Backward Service Interaction Indicator | O | O | O | O | - | - | O | This IE is described in a Table below. |
| HOLD Treatment Indicator | O | - | - | O | - | - | - | This IE allows the gsmSCF to disallow the invocation of HOLD by the CAMEL subscriber. |
| CW Treatment Indicator | O | - | - | O | - | - | - | This IE allows the gsmSCF to disallow the invocation of CW for a call to the CAMEL subscriber whilst this call is ongoing. |
| ECT Treatment Indicator | O | - | - | O | - | - | - | This IE allows the gsmSCF to disallow the call leg to become part of an ECT call initiated by the CAMEL subscriber. |
| Connected number treatment indicator | O | O | O | O | - | - | O | This IE indicates the treatment of the connected number at the originating side. |
| Non-CUG Call | O | O | O | O | O | O | O | This IE indicates that no parameters for CUG should be used for the call (i.e. the call should be a non-CUG call). Shall be absent if one or more of CUG Interlock Code and Outgoing Access Indicator is present in the IF. |
Forward Service Interaction Indicator contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Conference Treatment Indicator | O | O | O | O | O | - | O | This IE allows the gsmSCF to disallow the call leg to become part of a MPTY call initiated by the CAMEL subscriber. |
| Call Diversion Treatment Indicator | O | O | O | O | O | - | O | This IE allows the gsmSCF to disallow the Call Forwarding or Call Deflection supplementary services for this call. |
| Calling Party Restriction Indicator | O | O | O | O | O | O | O | This IE allows the gsmSCF to mark the CLI as Restricted for the call. |
Backward Service Interaction Indicator contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Conference Treatment Indicator | O | O | O | O | - | O | O | This IE allows the gsmSCF to disallow the call leg to become part of a MPTY call initiated by the calling subscriber. |
| Call Completion Treatment Indicator | O | O | O | O | - | O | O | This IE allows the gsmSCF to disallow a CCBS request to be made for the call. See also TS 23.093 for description. |
4.6.2.7 Connect To Resource p. 495
4.6.2.7.1 Description p. 495
This IF is used to connect a call from the gsmSSF to a gsmSRF.
4.6.2.7.2 Information Elements p. 495
| Information element name | Status | Description |
|---|---|---|
| Resource Address | M | This IE indicates the address of the gsmSRF to which the connection shall be established. It is described in a Table below. |
| Service Interaction Indicators Two | O | This IE indicates whether or not a bothway through connection is required between the call segment and the calling party. When there is no calling party connected to the call segment, then the gsmSSF shall ignore this IE, if received. The handling when this IE is not present is defined in ETSI EN 301 070-1 ([41]). |
| Call Segment ID | M | This IE indicates the call segment to be connected to the resource. The subsequent user interaction shall apply to all parties connected to the call segment. |
Resource Address contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| IP Routing Address | E | This IE indicates the routeing address to set up a connection between the call segment and the gsmSRF. |
| None | E | This IE indicates that the call segment shall be connected to a predefined gsmSRF. |
4.6.2.8 Continue p. 496
4.6.2.8.1 Description p. 496
This IF requests the gsmSSF to proceed with call processing at the DP at which it previously suspended call processing to await gsmSCF instructions. The gsmSSF completes DP processing, and continues basic call processing (i.e. proceeds to the next point in call in the BCSM) without substituting new data from the gsmSCF.
The gsmSCF may send this operation only when there is a CSA with a single call segment which includes:
- only leg 1, or
- only leg 2, or
- leg 1 and leg 2 but no other legs.
4.6.2.8.2 Information Elements p. 496
This IF contains no information elements.
4.6.2.9 Continue With Argument p. 496
4.6.2.9.1 Description p. 496
This IF requests the gsmSSF to continue the call processing with modified information at the DP at which it previously suspended call processing to await gsmSCF instructions or to continue call processing after a Call Party Handling IF was received. The gsmSSF completes DP processing if necessary, and continues basic call processing (i.e. proceeds to the next point in call in the BCSM) with the modified call setup information as received from the gsmSCF.
This IF may also be used to continue call processing after an Initiate Call Attempt IF and Call Party Handling IF.
The gsmSCF can send modified call information at DP Collected_Info and at DP Analysed_Info, as listed in the MO and MF columns in subclause 4.6.2.9.2.
The gsmSCF can send modified call information at DP Termination_Attempt_Authorised, as listed in the MT and VT columns in subclause 4.6.2.9.2.
The gsmSCF can send modified call information immediately after sending an Initiate Call Attempt IF, as listed in the NC and NP columns in subclause 4.6.2.9.2.
The gsmSCF can send modified call information at DP Collected_Info and at DP_Analysed_Info, as listed in the TO column in subclause 4.6.2.9.2.
In all other cases, Continue With Argument shall contain no other IE than Leg ID or Call Segment ID.
When this IF is used to resume the processing of an Initiate Call Attempt IF, then a Leg ID shall be included and Call Segment ID shall be absent.
When this IF is used to resume the processing of a Call Party Handling IF, then a Call Segment ID shall be included and Leg ID shall be absent.
When this IF is used to resume processing after an EDP-R or TDP-R, then a Leg ID shall be included and Call Segment ID shall be absent. The following exception exists: if this IF is used to resume processing after an EDP-R or TDP-R in one of the following scenarios:
- the CSA has one Call Segment only, which includes leg 1 only;
- the CSA has one Call Segment only, which includes leg 2 only;
- the CSA has one Call Segment only, which includes leg 1 and leg 2, but no other legs;
4.6.2.9.2 Information Elements p. 497
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Alerting Pattern | - | - | O | O | O | - | - | This IE indicates the kind of Alerting Pattern to be applied. |
| Calling Partys Category | O | O | O | O | O | O | O | This IE indicates the type of calling party (e.g., operator, pay phone, ordinary subscriber). |
| Generic Number | O | O | O | O | O | O | O | This IE contains the generic number. It is used to convey the additional calling party number, which e.g. could be used to modify the calling line ID presented to the called user. |
| Carrier | O | O | O | O | O | O | O | This IE is described in a Table below. |
| NA Originating Line Information | O | O | O | O | O | O | O | This IE identifies the type of number in the Charge Number (e.g. subscriber versus PLMN operator number). |
| Charge Number | O | O | O | O | O | O | O | This IE identifies the chargeable number for the usage of a North American carrier. |
| Suppression Of Announcements | - | - | O | O | O | O | - | This IE indicates that announcements or tones generated as a result of unsuccessful call establishment shall be suppressed. |
| Service Interaction Indicators Two | O | O | O | O | O | O | O | This IE is described in a Table below. |
| CUG Interlock Code | O | O | - | - | O | O | O | See TS 23.085 for details of this IE. |
| Outgoing Access Indicator | O | O | - | - | O | O | O | See TS 23.085 for details of this IE. |
| Basic OR Interrogation Requested | O | O | - | - | O | O,S | O | This IE indicates that a Basic Optimal Routeing interrogation is requested for the call. If Basic Optimal Routeing is successful, this will be reported to the gsmSCF in the Answer event report. This IE shall be ignored if the VMSC associated with the gsmSSF does not support Basic Optimal Routeing. This IE shall be ignored if it is received in a gsmSSF which is handling the MF call case in the GMSC function of the forwarding subscriber. For an NP call leg, this IE can only be included if the original call was an MO or NC call. |
| Leg ID | O,E | O,E | O,E | O,E | O,E | O,E | O,E | This IE indicates the party for which call processing is to be resumed. |
| Call Segment ID | O,E | O,E | O,E | O,E | O,E | O,E | O,E | This IE indicates the call segment for which call processing is to be resumed. |
| Suppress O-CSI | - | - | O | O | - | - | - | This IE indicates that O-CSI shall be suppressed for the forwarding leg or deflecting leg. |
| Suppress D-CSI | - | - | - | - | - | O | - | This IE indicates that D-CSI shall be suppressed for the new call leg. This IE can only be included if this IE is sent to the VMSC or GMSC of the CAMEL subscriber. |
| Suppress N-CSI | - | - | - | - | O | O | O | This IE indicates that N-CSI shall be suppressed for the new call leg or trunk originated call. |
| Suppress Outgoing Call Barring | - | - | - | - | - | O | - | This IE indicates that Outgoing Call Barrings for the created leg shall be suppressed. This IE can only be included if the Initiate Call Attempt IF is sent to the VMSC of the CAMEL subscriber. |
Carrier contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Carrier Identification Code | M | M | M | M | M | M | M | This IE uniquely identifies a North American long distance carrier. |
| Carrier Selection Information | M | M | M | M | M | M | M | This IE indicates the way the carrier was selected, i.e.:
|
Service Interaction Indicators Two contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Forward Service Interaction Indicator | O | O | O | O | O | O | O | This IE is described in a Table below. |
| Backward Service Interaction Indicator | O | O | O | O | - | - | O | This IE is described in a Table below. |
| HOLD Treatment Indicator | O | - | - | O | - | - | - | This IE allows the gsmSCF to disallow the invocation of HOLD by the CAMEL subscriber. |
| CW Treatment Indicator | O | - | - | O | - | - | - | This IE allows the gsmSCF to disallow the invocation of CW for a call to the CAMEL subscriber whilst this call is ongoing. |
| ECT Treatment Indicator | O | - | - | O | - | - | - | This IE allows the gsmSCF to disallow the call leg to become part of an ECT call initiated by the CAMEL subscriber. |
| Connected Number Treatment Indicator | O | O | O | O | - | - | - | This IE indicates the treatment of the connected number at the originating side. |
| Non-CUG Call | O | O | - | - | - | O | O | This IE indicates that no parameters for CUG should be used for the call (i.e. the call should be a non-CUG call). This IE shall be absent if one or more of CUG Interlock Code and Outgoing Access Indicator are present in the IF. |
Forward Service Interaction Indicator contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Conference Treatment Indicator | O | O | O | O | O | O | O | This IE indicates whether the call leg can become part of a MPTY call initiated by the called subscriber. |
| Call Diversion Treatment Indicator | O | O | O | O | O | O | O | This IE indicates whether the call can be forwarded using the Call Forwarding or Call Deflection supplementary services. |
| Calling Party Restriction Indicator | O | O | O | O | O | O | O | This IE allows the gsmSCF to mark the CLI as Restricted for the call. |
Backward Service Interaction Indicator contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Conference Treatment Indicator | O | O | O | O | - | - | O | This IE indicates if the call leg can become part of a MPTY call initiated by the calling subscriber. |
| Call Completion Treatment Indicator | O | O | O | O | - | - | O | This IE indicates whether a CCBS request can be made for the call. See also TS 23.093 for description. |
4.6.2.10 Disconnect Forward Connection p. 498
4.6.2.10.1 Description p. 498
This IF is used:
- to disconnect a connection with a gsmSRF previously established with a Connect To Resource IF;
- to disconnect an initiating gsmSSF from an assisting gsmSSF and its associated gsmSRF. The IF is sent to the initiating gsmSSF.
4.6.2.10.2 Information Elements p. 498
This IF contains no information elements.
4.6.2.11 Disconnect Forward Connection With Argument p. 499
4.6.2.11.1 Description p. 499
This IF is used in the following two cases:
- To clear a connection to a gsmSRF: This IF is used to explicitly disconnect a connection to a resource (gsmSRF) established previously with a Connect To Resource or an Establish Temporary Connection IF. It is used for a forward disconnection from the gsmSSF.
- To clear a connection to an assisting SSF: This IF is sent to the non-assisting SSF of a pair of SSFs involved in an assist procedure. It is used to disconnect the temporary connection between the initiating SSF and the assisting SSF.
4.6.2.11.2 Information Elements p. 499
| Information element name | Status | Description |
|---|---|---|
| Call Segment ID | M | This IE indicates the call segment in the call to be disconnected from the resource or the temporary connection. |
4.6.2.12 Disconnect Leg p. 499
4.6.2.12.1 Description p. 499
This IF is used to request the gsmSSF to release a specific leg associated with the call at any phase. All other legs in this call are retained. If the last leg of the call segment is disconnected, then the call segment is deleted.
4.6.2.12.2 Information Elements p. 499
| Information element name | Status | Description |
|---|---|---|
| Leg To Be Released | M | This IE indicates the party in the call to be released. |
| Release Cause | O | This IE indicates to the gsmSSF the reason for releasing the identified party. This may be used by the MSC or GMSC for generating specific tones to the party to be released or to fill in the "cause" IE in the Release IF. |
4.6.2.13 Establish Temporary Connection p. 499
4.6.2.13.1 Description p. 499
This IF is used to create a connection between an initiating gsmSSF and an assisting gsmSSF as a part of the assist procedure. It can also be used to create a connection between a gsmSSF and a gsmSRF.
4.6.2.13.2 Information Elements p. 499
| Information element name | Status | Description |
|---|---|---|
| Assisting SSP IP Routing Address | M | This IE indicates the destination address of the gsmSRF or assisting gsmSSF for the assist procedure. As a network operator option, the Assisting gsmSSF IP Routing Address may contain embedded within it, a "Correlation ID" and "gsmSCF ID", but only if "Correlation ID" and "gsmSCF ID" are not specified separately. |
| Correlation ID | O | This IE is used for:
|
| Carrier | O | This IE is described in a Table below. |
| NA Originating Line Information | O | This IE identifies the type of number in the Charge Number (e.g. subscriber versus PLMN operator number). |
| Charge Number | O | This IE identifies the chargeable number for the usage of a North American carrier. |
| gsmSCF ID | O | This IE indicates the gsmSCF identifier. |
| Service Interaction Indicators Two | O | This IE indicates whether or not a bothway through connection is required between the call segment and the calling party. When there is no calling party connected to the call segment, then the gsmSSF shall ignore this IE, if received. The handling when this IE is not present is defined in ETSI EN 301 070-1 [41]. |
| Call Segment ID | M | This IE indicates the call segment to be connected to the resource. The subsequent user interaction shall apply to all parties connected to the call segment. |
| Original Called Party ID | O | This IE may be used to identify the original called party. If present, it shall be included in the ISUP IAM for the Temporary Connection. Support of this IE in the gsmSSF is an implementation option. |
| Calling Party Number | O | This IE may be used to identify the calling party. If present, it shall be included in the ISUP IAM for the Temporary Connection. Support of this IE in the gsmSSF is an implementation option. |
Carrier contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Carrier Identification Code | M | This IE uniquely identifies a North American long distance carrier. |
| Carrier Selection Information | M | This IE indicates the way the carrier was selected, i.e.:
|
4.6.2.14 Furnish Charging Information p. 500
4.6.2.14.1 Description p. 500
This IF is used to request the gsmSSF to include call related information in the CAMEL specific logical call record. The logical call record is created when the Furnish Charging Information IF is received and a logical call record for that leg does not exist. For modelling purposes the logical call record is buffered in the gsmSSF. The gsmSSF completes logical call records as defined in the SDLs. Once the logical call record is completed, then the free format data are moved to the corresponding CDR and the logical call record is deleted.
The gsmSCF can send multiple concatenated Furnish Charging Information IFs per leg for completion. The total maximum of free format data is 160 octets per leg. The 160 octets may be sent in one or more FCI IFs. If there are incomplete free format data and new Furnish Charging Information IF(s) is/are received to overwrite the non-completed data, then the non-complete data are discarded and the gsmSCF can send another 160 octets per leg. The SDLs of the present document define when logical call records are completed. After the completion the gsmSCF can send another 160 octets of the free format data in one or more Furnish Charging Information IFs for the called leg.
4.6.2.14.2 Information Elements p. 500
| Information element name | Status | Description |
|---|---|---|
| FCI Billing Charging Characteristics | M | This IE is described in a Table below. |
FCI Billing Charging Characteristics contains the following information element:
| Information element name | Status | Description |
|---|---|---|
| FCIBCCCAMEL Sequence 1 | M | This IE is described in a Table below. |
FCIBCCCAMEL Sequence 1 contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Free Format Data | M | This IE contains the free format data to be inserted in the CAMEL logical call record. |
| Party To Charge | M | This IE indicates the party for whom a CAMEL logical call record will be created. |
| Append Free Format Data | O | This IE indicates that the gsmSSF shall append the free format data to the logical call record.
|
4.6.2.15 Initiate Call Attempt p. 501
4.6.2.15.1 Description p. 501
This IF is used to request the gsmSSF to create a new party in an existing call (NP), or to create a completely new call (NC). The created leg is an originating call. The address information provided by the gsmSCF is used.
4.6.2.15.2 Information Elements p. 501
| Information element name | NC | NP | Description |
|---|---|---|---|
| Destination Routeing Address | M | M | This IE contains the called party number towards which the call is to be routed. For calls to an MS this can e.g. be (but shall not be limited to) the MSISDN (for routeing via a GMSC) or the MSRN received from the HLR (for routeing direct to the VMSC). |
| Calling Party Number | M | - | This IE identifies which number shall be regarded as the calling party for the created call. |
| Leg To Be Created | M | M | This IE indicates the legID to be assigned to the newly created party. The leg ID shall be 3 or higher. |
| New Call Segment | M | M | This IE indicates the CS ID to be assigned to the newly created call segment. |
| Call Reference Number | M | - | This IE may be used by the gsmSCF for inclusion in a network optional gsmSCF call record. The call reference number is included by the MSC in the call record. |
| gsmSCF Address | M | - | This IE contains the address of the gsmSCF which initiated the new call. This IE is required for a unique Call Reference. |
| Suppress T-CSI | O | O | This IE indicates that T-CSI shall be suppressed on the terminating leg. |
4.6.2.16 Move Leg p. 501
4.6.2.16.1 Description p. 501
This IF requests the gsmSSF to move a leg to CSID1. After the move the source call segment is deleted.
In moving the specified leg, the conditions of the leg: the armed EDPs, the Stored e-parameters, the Non-completed CAMEL logical call records, and the Call Information Report pending, are also applied for the same leg after the move.
4.6.2.16.2 Information Elements p. 501
| Information element name | Status | Description |
|---|---|---|
| Leg ID To Move | M | This IE indicates the leg that shall be moved. |
4.6.2.17 Play Tone |R5| p. 502
4.6.2.17.1 Description p. 502
This IF is used to play a variable sequence of tones to a particular leg or call segment using the MSC's tone generator. Refer to subclause 4.5.7.1.2 for a graphical representation of the variable sequence of tones.
In order to avoid tone bursts being played in close succession to the same party or group of parties, the gsmSCF is responsible for careful use of this IF especially when warning tones have been scheduled using the Apply Charging IF.
4.6.2.17.2 Information Elements |R12| p. 502
| Information element name | Status | Description |
|---|---|---|
| Leg or Call Segment | M | This IE is described in a Table below. This IE indicates the leg or call segment. |
| Burst List | M | This IE is described in a Table below. This IE indicates a variable sequence of bursts. |
Leg or Call Segment contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Call Segment ID | E | This IE indicates the call segment to which tones shall be played. |
| Leg ID | E | This IE indicates the leg to which tones shall be played. |
Burst List contains the following information elements:
| Information element name | Status | Description |
|---|---|---|
| Number of bursts | M | This IE indicates the number of bursts to be played. There may be up to three bursts. |
| Burst interval | M | This IE indicates the time interval between successive bursts. |
| Number of tones in burst | M | This IE indicates the number of tones to be played in each burst. There may be up to three tones per burst. The tone is fixed to 900 Hz. |
| Tone Duration | M | This IE indicates the duration of each tone in a burst. |
| Tone Interval | M | This IE indicates the time interval between successive tones in a burst. |
4.6.2.18 Release Call |R5| p. 502
4.6.2.18.1 Description p. 502
This IF is used by the gsmSCF to tear down an existing call at any phase of the call for all parties involved in the call.
4.6.2.18.2 Information Elements p. 502
| Information element name | Status | Description |
|---|---|---|
| Release Cause | E | This IE indicates the Release Cause for the call. This may be used by the MSC or GMSC for generating specific tones to the different parties in the call or to fill in the "cause" in the Release IF. |
| Release Cause With Extensions | E | This IE indicates the Release Cause for the call. This may be used by the MSC or GMSC for generating specific tones to the different parties in the call or to fill in the "cause" in the Release IF. This IE may include additional network specific IE. It may be used by the gsmSCF only if the Initial DP IF or ICA Ack contained the 'Release Call Argument Extension Allowed' IE. |
4.6.2.19 Request Report BCSM Event |R5| p. 503
4.6.2.19.1 Description p. 503
This IF is used to request the gsmSSF to monitor for a call-related event, then send a notification back to the gsmSCF when the event is detected (see Event Report BCSM).
4.6.2.19.2 Information Elements p. 503
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| BCSM Event | M | M | M | M | M | M | M | This IE specifies the event or events for which a report is requested. |
BCSM Event contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Event type | M | M | M | M | M | M | M | This IE specifies the type of event for which a report is requested. |
| Leg ID | C | C | C | C | C | M | C | This IE indicates the party in the call for which the event shall be armed or disarmed. |
| Monitor Mode | M | M | M | M | M | M | M | If this IE is "interrupted" then the event shall be reported as a request, if this IE is "notify and continue" then the event shall be reported as a notification, if this IE is "transparent" then the event shall not be reported. |
| DP Specific Criteria | O | O | O | O | O | O | O | This IE is described in a Table below. |
| Automatic Rearm | O | O | O | O | - | - | O | This IE indicates that the detection point shall be automatically rearmed by the gsmSSF when it is encountered. This IE may be present only if the Event Type is O_Mid_Call, T_Mid_Call, O_Change_Of_Position, T_Change_Of_Position, O_Service_Change or T_Service_Change and the Monitor Mode is "notify and continue". The MF and MT cases apply for O_Service_Change or T_Service_Change DPs only. The TO case applies for O_Mid_Call and O_Service_Change DPs only. |
DP Specific Criteria contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Application Timer | O | O | O | O | O | O | O | This IE carries additional timer duration information (timer values for No_Answer event) required for arming the No_Answer EDPs in the gsmSSF. The TNRy timer (value defined between 10 seconds and 40 seconds) shall be shorter than the network no answer timer. |
| Mid Call Control Info | O | - | - | O | - | - | O | This IE is described in a Table below. This IE carries the criterion for the detection and reporting of the mid-call event. If this IE is absent, then mid-call triggering shall take place when the first digit has been entered by the user. |
| Change of Position Control Info | O | - | - | O | - | - | - | This IE is described in a Table below. It carries the list of criteria for the reporting of the change of position event. If the DP Specific Criteria IE is absent, then the criteria for any change of position shall be regarded as fulfilled. |
| Number of Digits | - | - | - | - | - | - | O | This IE indicates the number of additional digits requested by the gsmSCF to be collected by the gsmSSF before the CollectedInfo event is reported, excluding the digits reported already. It excludes the end of pulsing signal (ST) |
| Inter Digit Timeout | - | - | - | - | - | - | O | This IE carries additional timer duration information required for arming the CollectedInfo event in the gsmSSF. The IE indicates the maximum duration allowed between receipt of successive digits from the calling party. The Inter Digit timer value shall be shorter than the network inter-digit timer. The MSC/ gsmSSF shall use the network inter-digit timer duration as the default duration. If one or more CollectInformation operations are received in a call then the latest received value overwrites the previous value. If the latest CollectInformation does not include this IE then the previous value applies. |
|
NOTE:
If a Request Report BCSM Event information flow overwrites previous Request Report BCSM Event information flow which contained Application Timer IE for No_Answer DP, the behaviour of the gsmSSF is unpredictable.
|
||||||||
Mid Call Control Info contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | TO | Description |
|---|---|---|---|---|---|---|---|---|
| Minimum Number Of Digits | M | - | - | M | - | - | M | This IE indicates the minimum number of digits to be collected. The value of this IE includes the length of the Start digit string, if present, and the length of the End of reply digit string, if present. |
| Maximum Number Of Digits | M | - | - | M | - | - | M | This IE indicates the maximum number of digits to be collected. The value of this IE includes the length of the Start digit string, if present, and the length of the End of reply digit string, if present. If triggering takes place due to the detection of the maximum number of digits and the End of reply digit string, if present, is partially detected, then the partially detected End of reply digit string shall be included in the digit string to be reported to the gsmSCF. |
| End of Reply Digit String | O | - | - | O | - | - | O | This IE, if present, indicates the digit string that denotes the end of the digits to be collected. If triggering takes place due to the detection of the End of reply digit string, then this string shall be included in the digit string to be reported to the gsmSCF. If the interdigit timeout expires when the Start Digit String, if present, is complete and the Minimum Number Of Digits has been detected and the End Digit String, if present, has been partially detected then triggering shall take place. The partially detected End Of Reply Digit String shall be included in the string to be reported to the gsmSCF. |
| Cancel Digit String | O | - | - | O | - | - | O | This IE, if present, indicates the digit string that indicates that the input shall be erased and that digit collection, including the start digit string, if present, shall start afresh. |
| Start Digit String | O | - | - | O | - | - | O | This IE, if present, indicates the digit string that denotes the start of the digits to be collected. If this IE is absent, then the first digit entered forms part of the digits to be collected. When triggering takes place, then the Start digit string shall be included in the digit string to be reported to the gsmSCF. |
| Inter Digit Timeout | M | - | - | M | - | - | M | This IE indicates the maximum duration allowed between receipt of successive digits from the MS. For the TO case, this IE indicates the maximum duration allowed between receipt of successive digits from the calling party. |
Change of Position Control Info contains a list of up to 10 instances of the following information element:
| Information element name | MO | MF | MT | VT | NC | NP | Description |
|---|---|---|---|---|---|---|---|
| Change Of Location | M | - | - | M | - | - | Each Change Of Location IE is one of the 6 possibilities indicated in the Table below. If multiple instances of the Change Of Location IE have the same value, this is not an error. |
Each instance of the Change Of Location IE contains one of the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | Description |
|---|---|---|---|---|---|---|---|
| Cell Global ID | O,E | - | - | O,E | - | - | This IE indicates that the criteria are fulfilled if the mobile station performs handover across the boundary of the cell specified in this IE, i.e. handover into or out of the cell. |
| Service Area ID | O,E | - | - | O,E | - | - | This IE indicates that the criteria are fulfilled if the mobile station performs handover across the boundary of the service area specified in this IE, i.e. handover into or out of the service area. |
| Location Area ID | O,E | - | - | O,E | - | - | This IE indicates that the criteria are fulfilled if the mobile station performs handover across the boundary of the location area specified in this IE, i.e. handover into or out of the location area. |
| Inter-System Handover | O,E | - | - | O,E | - | - | This IE indicates that the criteria are fulfilled if the mobile station performs inter-system handover. |
| Inter-PLMN Handover | O,E | - | - | O,E | - | - | This IE indicates that the criteria are fulfilled if the mobile station performs inter-PLMN handover. |
| Inter-MSC Handover | O,E | - | - | O,E | - | - | This IE indicates that the criteria are fulfilled if the mobile station performs inter-MSC handover. |
4.6.2.20 Reset Timer |R5| p. 505
4.6.2.20.1 Description p. 505
This IF is used to reset a timer.
4.6.2.20.2 Information Elements p. 505
| Information element name | Status | Description |
|---|---|---|
| Timer Value | M | This IE specifies the value to which the indicated timer shall be set. |
| Timer ID | O | This IE indicates which timer shall be reset. It shall be set to 'Tssf'. |
| Call Segment ID | M | This IE indicates for which Call Segment in the gsmSSF the timer shall be reset. |
4.6.2.21 Send Charging Information |R5| p. 505
4.6.2.21.1 Description p. 505
This IF is used to send e-parameters from the gsmSCF to the gsmSSF. If Charge Advice Information (CAI) is received from the gsmSCF, it shall replace the CAI which would be generated by the MSC and inhibit any further generation of CAI by the MSC. Further processing of the CAI by the MSC shall be in accordance with the Advice of Charge supplementary service. If the subscriber is not provisioned with the Advice of Charge supplementary service or if the VPLMN does not support this service, then no e-parameters shall be sent to the MS and no error due to this fact shall be sent back to the gsmSCF.
The IF is only used in the MO case or in the VT case.
4.6.2.21.2 Information Elements p. 506
| Information element name | MO | MF | MT | VT | NC | NP | Description |
|---|---|---|---|---|---|---|---|
| SCI Billing Charging Characteristics | M | - | - | M | - | - | This IE defines the Advice Of Charge related information to be provided to the Mobile Station. |
| Leg ID | M | - | - | M | - | - | This IE indicates the leg to which the charging information shall be sent. |
SCI Billing Charging Characteristics contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | Description |
|---|---|---|---|---|---|---|---|
| AoC After Answer | S,E | - | - | S,E | - | - | This IE is described in a Table below. This IE is present after an Answer event has been detected from the called party, the current connected SRF or the temporary connection. |
| AoC Before Answer | S,E | - | - | S,E | - | - | This IE is described in a Table below. This IE is present before an Answer event has been detected from the called party, the current connected SRF or the temporary connection. |
AoC Before Answer contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | Description |
|---|---|---|---|---|---|---|---|
| AoC Initial | M | - | - | M | - | - | This IE contains CAI elements as defined in TS 22.024. |
| AoC Subsequent | O | - | - | O | - | - | This IE is described in a Table below. |
AoC Subsequent contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | Description |
|---|---|---|---|---|---|---|---|
| CAI Elements | M | - | - | M | - | - | This IE contains CAI elements as defined in TS 22.024. |
| Tariff Switch Interval | O | - | - | O | - | - | This IE indicates the tariff switch time until the next tariff switch applies. |
AoC After Answer contains the following information elements:
| Information element name | MO | MF | MT | VT | NC | NP | Description |
|---|---|---|---|---|---|---|---|
| CAI Elements | M | - | - | M | - | - | This IE contains CAI elements as defined in TS 22.024. |
| Tariff Switch Interval | O | - | - | O | - | - | This IE indicates the tariff switch time until the next tariff switch applies. |
4.6.2.22 Split Leg |R5| p. 506
4.6.2.22.1 Description p. 506
This IF is used to request the gsmSSF to separate a leg from CSID1 and move it to a new call segment.
If CSID1 does not exist, then this IF is used to request the gsmSSF to move a leg into a newly created CSID1.
In splitting the specified leg, the conditions of the leg: the armed EDPs, the Stored e-parameters, the Non-completed CAMEL logical call records, and the Call Information Report pending, are also applied for the same leg after split.
4.6.2.22.2 Information Elements p. 507
| Information element name | Status | Description |
|---|---|---|
| Leg To Be Split | M | This IE indicates the leg in the call to be split. |
| New Call Segment | M | This IE indicates the Call Segment ID to be assigned to the new call segment. |
