9 Description of information flows

03.783GPPCcustomized Applications for Mobile network Enhanced Logic (CAMEL) Phase 2Release 1998Stage 2TS

This clause contains the detailed description of the information flows used by CAMEL.

Each Information Element, IE is marked as Mandatory, Conditional, Optional or Not applicable for each different traffic case, Mobile Originating call (MO), Mobile Forwarded call (MF) and Mobile Terminating call (MT). This categorisation is a functional classification, i.e., stage 2 information and not a stage 3 classification to be used for the ASN.1 syntax of the protocol.

The following principles apply for the handling of the IEs by the receiving entity:

– The gsmSSF shall functionally support all IEs which can be sent to it.

– The gsmSCF may silently discard any IE which it does not functionally support

– The gsmSRF shall return an error if it does not functionally support a IE which it receives.

– The HLR may silently discard any IE which it does not functionally support.

Details of errors and exceptions to these rules are specified in are specified in 3GPP TS 09.78 [5].

9.1 gsmSSF to gsmSCF information flows

9.1.1 Activity Test ack

9.1.1.1 Description

This IF is the response to the Activity Test.

9.1.1.2 Information Elements

This IF contains no information elements.

9.1.2 Apply Charging Report

9.1.2.1 Description

This IF is used by the gsmSSF to report to the gsmSCF the information requested in the Apply Charging IF.

9.1.2.2 Information Elements

Information element name

MO

MF

MT

Description

Call Result

M

M

M

This IE contains the charging information to be provided by the gsmSSF.

M Mandatory (The IE shall always be sent)

Call Result contains the following information:

Information element name

MO

MF

MT

Description

Time Duration Charging Result

M

M

M

This IE is a list defined in the next table.

M Mandatory (The IE shall always be sent)

Time Duration Charging Result contains the following information:

Information element name

MO

MF

MT

Description

Time Information

M

M

M

This IE is a choice between Time if No Tariff Switch and Time if Tariff Switch.

Party To Charge

M

M

M

This IE is received in the related ApplyCharging operation to correlate the result to the request. This IE shall be a copy of the corresponding IE received in the Apply Charging operation.

Call Active

M

M

M

This IE indicates whether the call is active or not.

M Mandatory (The IE shall always be sent)

C Conditional (The IE shall be sent, if available)

Time Information contains one of the following information:

Information element name

MO

MF

MT

Description

Time If No Tariff Switch

C

C

C

This IE will be present if no tariff switch has occurred since the detection of Answer for the connection to the Called Party, the Temporary Connection, or the SRF connection, otherwise it will be absent.

Time If Tariff Switch

C

C

C

This IE will be present if a tariff switch has occurred since the detection of Answer for the connection to the Called Party, the Temporary Connection, or the SRF connection, otherwise it will be absent.

C Conditional (The IE shall be sent, if available)

9.1.3 Call Information Report

9.1.3.1 Description

This IF is used to send specific call information for a single call to the gsmSCF as requested from the gsmSCF in a previous Call Information Request.

9.1.3.2 Information Elements

Information element name

MO

MF

MT

Description

Requested Information List

M

M

M

This IE specifies a list of Requested information Values which are requested.

Leg ID

M

M

M

This IE indicates the party in the call for which information shall be collected. When absent, it indicates the ‘outgoing’ leg created with Connect or Continue.

M Mandatory (The IE shall always be sent)

9.1.4 Event Report BCSM

9.1.4.1 Description

This IF is used to notify the gsmSCF of a call-related event (i.e., BCSM events as answer and disconnect) previously requested by the gsmSCF in a Request Report BCSM Event IF.

9.1.4.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Event type BCSM

M

M

M

This IE specifies the type of event that is reported.

Event Specific Information BCSM

C

C

C

This IE indicates the call related information specific to the event.

Leg ID

M

M

M

This IE indicates the party in the call for which the event is reported.

Misc Call Info

M

M

M

This IE indicates the DP type.

M Mandatory (The IE shall always be sent)

C Conditional (The IE shall be sent, if available)

9.1.5 Initial DP

9.1.5.1 Description

This IF is generated by the gsmSSF when a trigger is detected at a DP in the BCSM, to request instructions from the gsmSCF.

9.1.5.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Additional Calling Party Number

C

C

The calling party number provided by the access signalling system of the calling user.

Bearer Capability

M

C

C

This IE indicates the type of the bearer capability connection to the user.

Called Party Number

M

M

This IE contains the number used to identify the called party in the forward direction.

Called Party BCD Number

M

This IE contains the number used to identify the called party in the forward direction. The number contained in this IE shall be identical to the number received over the access network. It may e.g. include service selection information, such as  and # digits, or carrier selection information dialled by the subscriber.

Calling Party Number

M

C

C

This IE carries the calling party number to identify the calling party or the origin of the call.

Calling Partys Category

M

C

C

Indicates the type of calling party (e.g., operator, pay phone, ordinary subscriber).

(continued)

(concluded)

Information element name

MO

MF

MT

Description

Call Reference Number

M

M

M

This IE may be used by the gsmSCF for inclusion in a network optional gsmSCF call record. It has to be coupled with the identity of the MSC which allocated it in order to define unambiguously the identity of the call.

For MO calls, the call reference number is set by the serving VMSC and included in the MO call record.

For MT calls, the call reference number is set by the GMSC and included in the RCF call record in the GMSC and in the MT call record in the terminating MSC.

For CF calls, the call reference number is set by the GMSC and included in the CF record in the forwarding MSC.

Event Type BCSM

M

M

M

This IE indicates the armed BCSM DP event (i.e., Collected_Info and Terminating_Attempt_Authorised), resulting in the Initial DP IF.

Ext-Basic Service Code

C

C

C

This IE indicates the type of basic service i.e., teleservice or bearer service.

High Layer Compatibility

C

C

C

This IE indicates the type of the high layer compatibility, which will be used to determine the ISDN-teleservice of a connected ISDN terminal.

IMSI

M

M

M

This IE identifies the mobile subscriber.

IP SSP Capabilities

C

C

C

This IE indicates which SRF resources are supported within the gsmSSF and are available. If this IE is absent, this indicates that no gsmSRF is attached and available.

Location Information

M

C

This IE is described in the next table.

Location Number

M

C

C

For mobile originated calls this IE represents the location of the calling party. For all other call scenarios this IE contains the location number received in incoming ISUP signalling.

MSC Address

M

M

M

For MO calls, the MSC Address carries the international E.164 address of the serving VMSC.

For MT calls, the MSC Address Address carries the international E.164 address of the GMSC.

For CF calls, the MSC Address carries the international E.164 address of the forwarding MSC.

GMSC Address

M

For CF calls, the GMSC Address carries the international E.164 address of the GMSC.

(continued)

(concluded)

Information element name

MO

MF

MT

Description

NA Carrier Information

C

C

C

The content of this IE is described in the next table.

The IE may normally be sent when the VPLMN and the HPLMN of the subscriber are both North American.

For MO calls, this IE shall contain any carrier that was dialed by the calling subscriber. If no carrier was dialed, the IE shall contain the calling subscriber’s subscribed carrier.

For MT calls, the IE shall contain the carrier subscribed to by the called subscriber.For MF calls, the IE shall contain the carrier subscribed to by the forwarding subscriber.

Original Called Party ID

C

C

This IE carries the dialled digits if the call has met call forwarding on the route to the gsmSSF.

Redirecting Party ID

M

C

This IE indicates the directory number the call was redirected from.

The service designer shall note that this parameter may not be available if the MF case is initiated with the Connect operation to a T-BCSM without Redirecting Party ID.

Redirection Information

M

C

It contains forwarding related information, such as redirection counter.

The service designer shall note that this parameter may not be available if the MF case is initiated with the Connect operation to a T-BCSM without Redirection Information.

Service Key

M

M

M

This IE identifies for the gsmSCF the requested set of one or more CAMEL services. It is used to address the correct application/SLP within the gsmSCF.

Subscriber State

C

This IE indicates the status of the MS. The states are:

– CAMELBusy: The MS is engaged on a transaction for a mobile originating or terminated circuit-switched call.

– NetworkDeterminedNotReachable: The network can determine from its internal data that the MS is not reachable.

– AssumedIdle: The state of the MS is neither "CAMELBusy" nor "NetworkDeterminedNotReachable".

– Not provided from VLR.

Time And Timezone

M

M

M

This IE contains the time that the gsmSSF was triggered, and the time zone the gsmSSF resides in.

GSM Forwarding Pending

C

This parameter indicates that a forwarded-to-number was received and the call will be forwarded due to GSM supplementary service call forwarding in the GMSC.

M Mandatory (The IE shall always be sent)

C Conditional (The IE shall be sent, if available)

– Not applicable

Location Information contains the following information:

Information element name

MO

MF

MT

Description

Location Number

C

See 3GPP TS 03.18 [3].

CellIdOrLAI

M

C

See 3GPP TS 03.18 [3].

Geographical Information

C

C

See 3GPP TS 03.18 [3].

Age Of Location Information

M

C

See 3GPP TS 03.18 [3].

VLR number

M

C

See 3GPP TS 03.18 [3].

M Mandatory (The IE shall always be sent)

C Conditional (The IE shall be sent, if available)

– Not applicable

NA Carrier Information contains the following information:

Information element name

MO

MF

MT

Description

NA Carrier Identification Code

M

M

M

This IE uniquely identifies a North American long distance carrier.

NA Carrier Selection Information

M

M

M

This IE indicates the way the carrier was selected e.g.:
– dialled
– subscribed

M Mandatory (The IE shall always be sent)

9.2 gsmSCF to gsmSSF information flows

9.2.1 Activity Test

9.2.1.1 Description

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 the appropriate action.

9.2.1.2 Information Elements

This IF contains no information elements.

9.2.2 Apply Charging

9.2.2.1 Description

This IF is used for interacting from the gsmSCF with the gsmSSF charging mechanisms to control the call duration.

9.2.2.2 Information Elements

Information element name

MO

MF

MT

Description

ACh Billing Charging Characteristics

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

This IE shall be reflected in the corresponding IE of the Apply Charging Report operation. This IE has no effect on the charging procedures in the MSC.

M Mandatory (The IE shall always be sent)

ACh Billing Charging Characteristics contains the following information:

Information element name

MO

MF

MT

Description

Time Duration Charging

M

M

M

This IE is described in the next table.

M Mandatory (The IE shall always be sent)

Time Duration Charging contains the following information:

Information element name

MO

MF

MT

Description

Max Call Period Duration

M

M

M

This IE indicates the maximum call period duration timer.

Tariff Switch Interval

O

O

O

This IE indicates the tariff switch time until the next tariff switch applies.

Release If Duration Exceeded

O

O

O

This IE indicates that the call shall be released when the Max call Period Duration expires, with a warning tone if the Play Tone IE is present. The cause used in the release message shall be "normal unspecified".

Default is to continue the call.

M Mandatory (The IE shall always be sent)

O Optional (Service logic dependent)

Release If Duration Exceeded contains the following IE :

Information element name

MO

MF

MT

Description

Play Tone

O

O

This IE is set if a tone has to be played to the party for whom the BCSM is operating. If present, this IE indicates that 30 seconds before the Max Call Period Duration timer expires,

a triple tone of 900 Hz (200 milliseconds tone, 200 milliseconds pause) shall be played.

This IE shall be absent if the call is not to be released.

O Optional (Service logic dependant)

– Not applicable

9.2.3 Call Information Request

9.2.3.1 Description

This IF is used to request the gsmSSF to record specific information about a single call and report it to the gsmSCF (with a CallInformationReport)

9.2.3.2 Information Elements

Information element name

MO

MF

MT

Description

Requested Information Type List

M

M

M

This IE specifies a list of specific items of information which are requested.

Leg ID

M

M

M

This IE indicates the party in the call for which information shall be collected. When absent, it indicates the ‘outgoing’ leg created with Connect or Continue.

M Mandatory (The IE shall always be sent)

Requested Information Type List contains the following information:

Information element name

MO

MF

MT

Description

Call Attempt Elapsed Time

O

O

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 or Continue 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

O

O

This parameter indicates that the Call Stop Time is requested in the Call Information Report.

Call Connected Elapsed Time is the time stamp when the connection is released.

Call Connected Elapsed Time

O

O

O

This parameter 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 InitialDP and the release of that party.

Release Cause

O

O

O

This parameter indicates the Release Cause is requested in the Call Information Report.
Release Cause is the release cause for the call.

O Optional (Service logic dependent)

9.2.4 Cancel

9.2.4.1 Description

This IF is used by the gsmSCF to request the gsmSSF to cancel all EDPs and reports.

9.2.4.2 Information Elements

The following information elements are used:

Information element name

MO

MF

MT

Description

All Requests

M

M

M

This IE indicates that all active requests for EventReportBCSM, ApplyChargingReport and CallInformationReport shall be cancelled.

M Mandatory (The IE shall always be sent)

9.2.5 Connect

9.2.5.1 Description

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.

9.2.5.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Alerting Pattern

O

This parameter indicates the kind of Alerting Pattern to be applied.

Calling Partys Category

O

O

O

This IE indicates the type of calling party (e.g., operator, pay phone, ordinary subscriber).

Destination Routing Address

M

M

M

This IE contains the called party number towards which the call is to be routed.

Generic Number

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.

NA Carrier Information

O

O

O

This IE is described in the next table.

NA Originating Line Information

O

O

O

This IE identifies the type of number in the NA Charge Number (e.g. subscriber versus PLMN operator number).

NA Charge Number

O

O

O

This IE identifies the chargeable number for the usage of a North American carrier.

O-CSI Applicable

O

This IE indicates that the O-CSI, if present shall be applied on the outgoing leg.

Original Called Party ID

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.

Redirecting Party ID

O

O

O

This IE indicates the directory number the call was redirected from.

Redirection Information

O

O

O

This IE contains forwarding related information, such as redirecting counter.

Suppression Of Announcements

O

This IE indicates that announcements or tones generated as a result of unsuccessful call setup shall be suppressed.

O Optional (Service logic dependent)

– Not applicable

NA Carrier Information contains the following information:

Information element name

MO

MF

MT

Description

NA Carrier Identification Code

M

M

M

This IE uniquely identifies a North American long distance carrier.

NA Carrier Selection Information

M

M

M

This IE indicates the way the carrier was selected e.g.:
– dialled
– subscribed

M Mandatory (The IE shall always be sent)

9.2.6 Connect To Resource

9.2.6.1 Description

This IF is used to connect a call from the gsmSSF to a gsmSRF.

9.2.6.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Service Interaction Indicators Two

O

O

O

This parameter indicates whether or not a bothway through connection is required between the Calling party and the gsmSRF. The handling when this IE is not present is defined in EN 301 070-1 ([7]).

Resource Address

O

O

O

This IE indicates the physical location of the gsmSRF.

O Optional (Service logic dependent)

Resource Address contains the following information:

Information element name

MO

MF

MT

Description

IP Routing Address

O

O

O

This IE indicates the routeing address to set up a connection towards the gsmSRF.

None

O

O

O

This parameter indicates that the call party is to be connected to a predefined gsmSRF.

O Optional (Service logic dependent)

9.2.7 Continue

9.2.7.1 Description

This information flow 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.

9.2.7.2 Information Elements

This IF contains no information elements.

9.2.8 Disconnect Forward Connection

9.2.8.1 Description

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 send to the initiating gsmSSF

9.2.8.2 Information Elements

This IF contains no information elements.

9.2.9 Establish Temporary Connection

9.2.9.1 Description

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.

9.2.9.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Assisting SSP IP Routing Address

M

M

M

This parameter indicates the destination address of the gsmSRF or assisting gsmSSF for the assist procedure. As a network operator option, the Assisting SSP IP Routing Address may contain embedded within it, a "Correlation ID" and " Scf ID", but only if "Correlation ID" and "Scf ID" are not specified separately.

Correlation ID

O

O

O

This parameter is used for :

– the correlation of dialogues from the initiating gsmSSF-> gsmSCF with dialogues from gsmSRF -> gsmSCF

– the correlation of dialogues from the initiating gsmSSF-> gsmSCF with dialogues from assisting gsmSSF -> gsmSCF.

NA Carrier Information

O

O

O

This IE is described in the next table.

NA Originating Line Information

O

O

O

This IE identifies the type of number in the NA Charge Number (e.g. subscriber versus PLMN operator number).

NA Charge Number

O

O

O

This IE identifies the chargeable number for the usage of a North American carrier.

Scf ID

O

O

O

This parameter indicates the gsmSCF identifier

Service Interaction Indicators Two

O

O

O

This parameter indicates whether or not a bothway through connection is required between the Calling party and the gsmSRF. The handling when this IE is not present is defined in EN 301 070-1 ([7]).

M Mandatory (The IE shall always be sent)

O Optional (Service logic dependent)

NA Carrier Information contains the following information:

Information element name

MO

MF

MT

Description

NA Carrier Identification Code

M

M

M

This IE uniquely identifies a North American long distance carrier.

NA Carrier Selection Information

M

M

M

This IE indicates the way the carrier was selected e.g.:
– dialled
– subscribed

M Mandatory (The IE shall always be sent)

9.2.10 Furnish Charging Information

This IF is used to request the gsmSSF to include call related information in the CAMEL specific logical call record.

9.2.10.1 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

FCI Billing Charging Characteristics

M

M

M

This IE is described in the next table.

M Mandatory (The IE shall always be sent)

FCI Billing Charging Characteristics contains the following information:

Information element name

MO

MF

MT

Description

FCIBCCCAMEL Sequence 1

M

M

M

This IE is described in the next table.

M Mandatory (The IE shall always be sent)

FCIBCCCAMEL Sequence 1 contains the following information:

Information element name

MO

MF

MT

Description

Free Format Data

M

M

M

This IE is a free format data to be inserted in the CAMEL logical call record.

Party To Charge

M

M

M

This IE indicates the party for whom a CAMEL logical call record will be created.

M Mandatory (The IE shall always be sent)

9.2.11 Release Call

9.2.11.1 Description

This IF is used to tear down by the gsmSCF an existing call at any phase of the call for all parties involved in the call.

9.2.11.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Cause

M

M

M

A number giving an indication to the gsmSSF about the reason of releasing this specific call. This may be used by MSC/GMSC for generating specific tones to the different parties in the call or to fill in the "cause" in the release message.

M Mandatory (The IE shall always be sent)

9.2.12 Request Report BCSM Event

9.2.12.1 Description

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).

9.2.12.2 Information Elements

The following information elements are used:

Information element name

MO

MF

MT

Description

BCSM Event

M

M

M

This IE specifies the event or events of which a report is requested.

M Mandatory (The IE shall always be sent)

BCSM Event contains the following information:

Information element name

MO

MF

MT

Description

Event type

M

M

M

This IE specifies the type of event of which a report is requested.

Leg ID

C

C

C

This IE indicates the party in the call for which the event shall be reported.

Monitor Mode

M

M

M

This IE indicates how the event shall be reported.

DP Specific Criteria

O

O

O

This IE is described in the next table.

M Mandatory (The IE shall always be sent)

C Conditional

O Optional (Service logic dependent)

DP Specific Criteria is defined as:

Information element name

MO

MF

MT

Description

Application Timer

O

O

O

This IE carries additional timer duration information (timer values for No Answer event) required for arming No_Answer EDPs in the gsmSSF. The TNRy timer (value defined between 10s and 40s) shall be shorter than the network no answer timer.

O Optional (Service logic dependent)

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.

9.2.13 Reset Timer

9.2.13.1 Description

This IF is used to refresh a timer.

9.2.13.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Timer Value

M

M

M

This IE specifies the value to which the timer Tssf shall be set.

Timer ID

O

O

O

This IE has a default value indicating the Tssf value.

M Mandatory (The IE shall always be sent)

O Optional (Service logic dependent)

9.2.14 Send Charging Information

9.2.14.1 Description

This IF is used to send e-parameters from the gsmSCF to the gsmSSF. If charge advice information is received from the gsmSCF, it shall replace the charge advice information which would be generated by the MSC and inhibit any further generation of CAI by the MSC. Further processing of the charge advice information by the MSC shall be in accordance with the GSM Advice of Charge Supplementary Service.

NOTE 1: If charge advice information is received from the gsmSCF after charge information has been generated by the MSC and sent to the MS, the behaviour of the service may be unpredictable or incorrect ; the service designer should therefore ensure that the first set of charge advice information is sent to the gsmSSF before charge information is sent to the to the MS.

NOTE 2: There are various interpretations of how the gsmSSF should behave if the subscriber is not provisioned with the GSM Advice of Charge supplementary service or if the VPLMN does not support this service.

9.2.14.2 Information Elements

The following information elements are only used for the MO case :

Information element name

MO

Description

SCI Billing Charging
Characteristics

M

This IE defines the Advice Of Charge related information to be provided to the Mobile Station

Leg ID

M

This IE indicates where the charging information shall be sent.

M Mandatory (The IE shall always be sent)

SCI Billing Charging Characteristics is defined as:

Information element name

MO

Description

AOC After Answer

C

This IE is sent after an Answer from event has been detected from the called party, the current connected SRF or the temporary connection.

AOC Before Answer

C

This IE is sent before an Answer event has been detected from the called party, the current connected SRF or the temporary connection.

C Conditional (only one of these IEs may be sent)

AOC Before Answer is defined as:

Information element name

MO

Description

AOC Initial

M

This IE contains CAI elements as defined in 3GPP TS 02.24 [14].

AOC Subsequent

O

See definition in the next table.

M Mandatory (The IE shall always be sent)

O Optional (Service logic dependent)

AOCSubsequent is defined as:

Information element name

MO

Description

CAI Elements

M

This IE contains CAI elements as defined in 3GPP TS 02.24 [14].

Tariff Switch Interval

O

This IE indicates the tariff switch time until the next tariff switch applies.

M Mandatory (The IE shall always be sent)

O Optional (Service logic dependent)

AOCAfterAnswer is defined as:

Information element name

MO

Description

CAI Elements

M

This IE contains CAI elements as defined in 3GPP TS 02.24 [14].

Tariff Switch Interval

O

This IE indicates the tariff switch time until the next tariff switch applies.

M Mandatory (The IE shall always be sent)

9.3 Optional (Service logic dependent) gsmSCF to gsmSRF information flows

9.3.1 Cancel

9.3.1.1 Description

This IF is used by the gsmSCF to request the gsmSRF to cancel a correlated previous operation.

9.3.1.2 Information Elements

The following information elements are used:

Information element name

MO

MF

MT

Description

Invoke ID

M

M

M

This IE specifies the operation to be cancelled.

M Mandatory (The IE shall always be sent)

9.3.2 Play Announcement

9.3.2.1 Description

This IF is used for inband interaction.

9.3.2.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Information To Send

M

M

M

This IE indicates an announcement or a tone to be sent to the end user by the gsmSRF.

Disconnect From IP Forbidden

M

M

M

This IE indicates whether or not the gsmSRF may be disconnected from the user when all information has been sent.

Request Announcement Complete

M

M

M

This IE indicates whether or not a SpecializedResourceReport shall be sent to the gsmSCF when all information has been sent.

M Mandatory (The IE shall always be sent)

O Optional (Service logic dependent)

Information To Send contains the following information:

Information element name

MO

MF

MT

Description

Inband Info

O

O

O

This IE indicates the inband information to be sent.

Tone

O

O

O

This IE indicates the tone to be sent. The mapping from the code points of this IE to tones is a matter for agreement between the gsmSCF operator and the gsmSRF operator.

O Optional (Service logic dependent)

Inband Info contains the following information:

Information element name

MO

MF

MT

Description

Message ID

M

M

M

This IE is described in the next table.

Number Of Repetitions

M

M

M

This IE indicates the maximum number of times the message shall be sent to the end-user.

Duration

O

O

O

This IE indicates the maximum duration time in seconds that the message shall be played/repeated. Zero indicates endless repetition.

Interval

O

O

O

This IE indicates the time interval in seconds between two repetitions.

M Mandatory (The IE shall always be sent)

O Optional (Service logic dependent)

Message ID contains the following information:

Information element name

MO

MF

MT

Description

Elementary Message ID

O

O

O

This IE indicates a single announcement

Text

O

O

O

This IE indicates a text to be sent. The text shall be transformed to inband information (speech) by the gsmSRF.

Elementary Message IDs

O

O

O

This IE indicates a sequence of announcements

Variable Message

O

O

O

This IE indicates an announcement with one or more variable parts.

O Optional (Service logic dependent)

Tone contains the following information:

Information element name

MO

MF

MT

Description

Tone ID

M

M

M

This IE indicates the tone to be sent.

Duration

O

O

O

This IE indicates the maximum duration time in seconds that the message shall be played/repeated. Zero indicates endless repetition.

M Mandatory (The IE shall always be sent)

O Optional (Service logic dependent)

9.3.3 Prompt And Collect User Information (received information)

9.3.3.1 Description

This IF is used to interact with a call party in order to collect information.

9.3.3.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Collected Info

M

M

M

This IE is described in the next table.

Information To Send

O

O

O

This IE indicates an announcement or a tone to be sent to the end user by the gsmSRF.

Disconnect From IP Forbidden

O

O

O

This IE indicates whether the gsmSRF should be disconnected from the user when all information has been sent.

O Optional (Service logic dependent)

Collected Info contains the following information:

Information element name

MO

MF

MT

Description

Collected Digits

M

M

M

This IE is described in the next table.

O Optional (Service logic dependent)

Collected Digits contains the following information:

Information element name

MO

MF

MT

Description

Minimum Number Of Digits

M

M

M

This IE indicates the minimum number of valid digits to be collected.

Maximum Number Of Digits

O

O

O

This IE specifies the maximum number of valid digits to be collected

End Of Reply Digit

O

O

O

This IE indicates the digit(s) used to signal the end of input.

Cancel Digit

O

O

O

If this IE is present, the cancel digit can be entered by the user to request a possible retry

Start Digit

O

O

O

If this IE is present, the start digit(s) indicates the start of the valid digits to be collected.

First Digit Time Out

O

O

O

If this IE is present, the first digit shall be received before the expiration of the first digit timer expiration

Inter Digit Time Out

O

O

O

If this IE is present, any subsequent valid or invalid digit shall be received by the gsmSRF before the inter digit timer expires.

Error Treatment

O

O

O

This IE indicates what specific action shall be taken by the gsmSRF in the event of error conditions occurring.

Interruptable Ann Ind

O

O

O

If this IE is set to TRUE (default value) the announcement is interrupted after the first valid or invalid digit received by the gsmSRF. If this IE is present and explicitly set to FALSE, the announcement will not be interrupted after the first digit is received by the gsmSRF

Voice Information

O

O

O

This IE is optional, where the default value is specified being FALSE. If the VoiceInformation IE is set to FALSE, all valid or invalid digits are entered by DTMF If this IE is present and explicitly set to TRUE, calling user is required to provide all valid or invalid information by speech

Voice Back

O

O

O

This IE is optional, where the default value is specified being FALSE. If the VoiceBack IE is set to FALSE, no voice back information is given by the gsmSRF If this IE is present and explicitly set to TRUE, the valid input digits received by the gsmSRF will be announced back to the calling user immediately after the end of input is received

O Optional (Service logic dependent)

InformationToSend is defined in subclause 9.3.3.

9.3.4 Activity Test

9.3.4.1 Description

This IF is used to check for the continued existence of a relationship between the gsmSCF and gsmSRF. If the relationship is still in existence, then the gsmSRF will respond. If no reply is received, then the gsmSCF will assume that the gsmSRF has failed in some way and will take the appropriate action.

9.3.4.2 Information Elements

This IF contains no information elements.

9.4 gsmSRF to gsmSCF information flows

9.4.1 Assist Request Instructions

9.4.1.1 Description

This IF is sent to the gsmSCF by a gsmSSF which is acting as the assisting gsmSSF or by a gsmSRF

9.4.1.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

CorrelationID

M

M

M

This IE is used to associate the AssistRequestInstructions IF from an assisting gsmSSF or by a gsmSRF with the InitialDP from the initiating gsmSSF.

IP SSP Capabilities

M

M

M

This IE indicates which SRF resources are attached, available and supported within the MSC where the gsmSSF resides or the IP in which the gsmSRF resides.

M Mandatory (The IE shall always be sent)

9.4.2 Prompt And Collect User Information ack (received information)

9.4.2.1 Description

This IF is used by the gsmSRF to indicate the result a Prompt And Collect User Information IF.

9.4.2.2 Information Elements

The following information elements are required:

Information element name

MO

MF

MT

Description

Digits Response

C

C

C

This IE indicates the digit sequence received from the end user

C Conditional (The IE shall be sent, if available)

9.4.3 Specialized Resource Report

9.4.3.1 Description

This IF is used to response to a PlayAnnouncement IF when the announcement complete indication is set.

9.4.3.2 Information Elements

This IF contains no information elements.

9.4.4 Activity Test ack

9.4.4.1 Description

This IF is the response to the Activity Test.

9.4.4.2 Information Elements

This IF contains no information elements.

9.5 gsmSCF to Assisting SSF information flows

9.5.1 Cancel

9.5.1.1 Description

This IF is described in section 9.3.

9.5.2 Connect To Resource

9.5.2.1 Description

This IF is described in section 9.2.

9.5.3 Play Announcement

9.5.3.1 Description

This IF is described in section 9.3..

9.5.4 Prompt And Collect User Information

9.5.4.1 Description

This IF is described in section 9.3.

9.5.5 Reset Timer

9.5.5.1 Description

This IF is described in section 9.2.

9.5.6 Activity Test

9.5.6.1 Description

This IF is used to check for the continued existence of a relationship between the gsmSCF and assistSSF. If the relationship is still in existence, then the assistSSF will respond. If no reply is received, then the gsmSCF will assume that the assistSSF has failed in some way and will take the appropriate action.

9.5.6.2 Information Elements

This IF contains no information elements.

9.6 Assisting SSF to gsmSCF information flows

9.6.1 Assist Request Instructions

9.6.1.1 Description

This IF is defined in subclause 9.4.

9.6.2 Prompt And Collect User Information ack (received information)

9.6.2.1 Description

This IF is described in section 9.4.

9.6.3 Specialized Resource Report

9.6.3.1 Description

This IF is described in section 9.4.

9.6.4 Activity Test ack

9.6.4.1 Description

This IF is the response to the Activity Test.

9.6.4.2 Information Elements

This IF contains no information elements.

9.7 gsmSCF to HLR information flows

9.7.1 Any Time Interrogation Request

9.7.1.1 Description

This IF is used to request information (subscriber state and location) from the HLR at any time.

9.7.1.2 Information Elements

The following information elements are required:

Information element name

Required

Description

gsmSCF Address

M

This IE indicates the address of the interrogating gsmSCF.

Requested Info

M

This IE indicates the type of subscriber information being requested:

– subscriber location

– subscriber state

Subscriber Identity

M

This IE identifies the subscriber for which the information is requested. The identity can be one of:

– IMSI

– MSISDN

M Mandatory (The IE shall always be sent)

9.7.2 Unstructured SS Request

9.7.2.1 Description

This interface is used for the gsmSCF to request data from the MS via the HLR.

9.7.2.2 Information Elements

The following information elements are required:

Information element name

Required

Description

USSD String

M

This IE contains the string that will be sent to the MS.

Data Coding Scheme

M

This IE indicates the characteristics of the USSD string

IMSI

C

This IE identifies the subscriber for which the information is requested

Alerting Pattern

O

This IE indicates an alerting pattern to be sent to the MS.

M Mandatory (The IE shall always be sent)

C Conditional (This IE shall be sent if this IF is the first IF in a USSD dialogue)

O Optional (Service Logic dependent)

9.7.3 Unstructured SS Notify

9.7.3.1 Description

This interface is used for the gsmSCF to send data to the MS via the HLR.

9.7.3.2 Information Elements

The following information elements are required:

Information element name

Required

Description

USSD String

M

This IE contains the string that will be sent to the MS.

Data Coding Scheme

M

This IE indicates the characteristics of the USSD string

IMSI

C

This IE identifies the subscriber for which the information is requested.

Alerting Pattern

O

This IE indicates an alerting pattern to be sent to the MS.

M Mandatory (The IE shall always be sent)

C Conditional (This IE shall be sent if this IF is the first IF in a USSD dialogue)

O Optional (Service Logic dependent)

9.7.4 Process Unstructured SS Data ack

9.7.4.1 Description

This interface is used for the gsmSCF to send the response to the MS via the HLR for the MS initiated operation.

9.7.4.2 Information Elements

The following information element is required:

Information element name

Required

Description

SS User Data

C

This IE contains the string that will be sent to the MS.

C Conditional (The IE shall be sent, if requested and available)

9.7.5 Process Unstructured SS Request ack

9.7.5.1 Description

This interface is used for the gsmSCF to send the response to the MS via the HLR for the MS initiated operation.

9.7.5.2 Information Elements

The following information elements are required:

Information element name

Required

Description

USSD String

C

This IE contains the string that will be sent to the MS.

Data Coding Scheme

C

This IE indicates the characteristics of the USSD string

C Conditional (the presence of the IE depends on the application. Both IEs shall be sent.)

9.8 HLR to gsmSCF information flows

9.8.1 Any Time Interrogation ack

9.8.1.1 Description

This IF is used by the HLR to provide the requested information to the gsmSCF.

9.8.1.2 Information Elements

The following information elements are required:

Information element name

Required

Description

Location Information

C

This IE indicates the location of the served subscriber.

Subscriber State

C

This IE indicates the status of the MS. The possible values of the IE are:

– CAMELBusy: The VLR has indicated that the MS is engaged on a transaction for a mobile originating or terminated circuit-switched call.

– NetworkDeterminedNotReachable: The VLR has indicated that the network can determine from its internal data that the MS is not reachable.

– AssumedIdle: The VLR has indicated that the state of the MS is neither "CAMELBusy" nor "NetworkDeterminedNotReachable".

– NotProvidedFromVLR: The VLR did not provide any information on subscriber state even though it was requested.

C Conditional (The IE shall be sent, if requested and available)

Location Information contains the following information:

Information element name

Required

Description

Location Number

C

See 3GPP TS 03.18 [3].

CellIdOrLAI

C

See 3GPP TS 03.18 [3].

Geographical Information

C

See 3GPP TS 03.18 [3].

Age Of Location Information

C

See 3GPP TS 03.18 [3].

VLR number

C

See 3GPP TS 03.18 [3].

C Conditional (The IE shall be sent, if available)

9.8.2 Unstructured SS Request ack

9.8.2.1 Description

This interface is used for the MS to via the HLR send the response to the gsmSCF for the gsmSCF initiated operation.

9.8.2.2 Information Elements

The following information elements are required:

Information element name

Required

Description

USSD String

C

This IE contains the string that will be sent to the gsmSCF.

Data Coding Scheme

C

This IE indicates the characteristics of the USSD string

C Conditional (The presence of the IE depends on the application. Both IEs shall be sent.)

9.8.3 Unstructured SS Notify ack

This IE contains no information element.

9.8.3.1 Description

This interface is used for the MS to via the HLR acknowledge to the gsmSCF that the notification was received.

9.8.4 Process Unstructured SS Data

9.8.4.1 Description

This interface is used for the gsmSCF to request data from the MS via the HLR.

9.8.4.2 Information Elements

The following information elements are required:

Information element name

Required

Description

SS User Data

M

This IE contains the string that will be sent to the MS.

M Mandatory (The IE shall always be sent)

9.8.5 Process Unstructured SS Request

9.8.5.1 Description

This interface is used for the MS to request data from the gsmSCF via the HLR.

9.8.5.2 Information Elements

The following information elements are required:

Information element name

Required

Description

USSD String

M

This IE contains the string that will be sent to the gsmSCF, including the Service Code.

Data Coding Scheme

M

This IE indicates the characteristics of the USSD string

IMSI

M

This IE identifies the subscriber.

MSISDN

O

This IE contains the basic MSISDN of the subscriber who has requested the USSD operation. This IE is used as an operator option.

Originating Entity Number

M

This IE identifies the functional entity initiating the information flow.
In this case, this shall be the address of the HLR.

M Mandatory (The IE shall always be sent)

O Optional (Operator option)

9.8.6 Begin Subscriber Activity

9.8.6.1 Description

This Information Flow is used by the HLR to start subscriber activity towards the gsmSCF for USSD purposes.

9.8.6.2 Information Elements

The following information elements are required:

Information element name

Required

Description

IMSI

M

This IE identifies the subscriber.

Originating Entity Number

M

This IE identifies the functional entity initiating the subscriber activity.
In this case, this shall be the address of the HLR.

M Mandatory (The IE shall always be sent)

9.9 HLR to VLR information flows

9.9.1 Delete Subscriber Data

9.9.1.1 Description

This IF is specified in 3GPP TS 09.02 [4] and is used by the HLR to delete subscriber data in the VLR.

9.9.1.2 Information Elements

The Delete Subscriber Data contains the following CAMEL specific IE:

Information element name

Required

Description

CAMEL Subscription Info Withdraw

C

This IE identifies that all CSIs shall be deleted from the subscriber data in VLR.

C Conditional (The IE shall be sent when deletion is requested)

9.9.2 Insert Subscriber Data

9.9.2.1 Description

This IF is specified in 3GPP TS 09.02 [4] and used by the HLR to insert subscriber data in the VLR.

9.9.2.2 Information Elements

Insert Subscriber Data contains the following CAMEL specific IE:

Information element name

Required

Description

O-CSI

C

This IE identifies the subscriber as having originating CAMEL services.

SS-CSI

C

This IE identifies the subscriber as having supplementary service invocation notification services. It contains the Notification Criteria and gsmSCFAddress.

C Conditional (The IE shall be sent, if required)

O-CSI contains the following information:

Information element name

Required

Description

gsmSCF Address

M

This IE is described in section 6.1

Service Key

M

This IE is described in section 6.1.

Default Call Handling

M

This IE is described in section 6.1.

TDP List

M

This IE is described in section 6.1.

DP Criteria

O

This IE is described in section 6.1.

CAMEL Capability Handling

C

This IE is described in section 6.1. If this IE is absent, this indicates that CAMEL phase 1 is asked.

M Mandatory

C Conditional

O Optional (service logic dependant)

9.9.3 Provide Subscriber Info

9.9.3.1 Description

This IF is used by the HLR to request information (subscriber state and location) from the VLR at any time.

9.9.3.2 Information Elements

Provide Subscriber Info contains the following CAMEL specific IE:

Information element name

Required

Description

Requested Info

M

This IE indicates the type of subscriber information to the gsmSCF.

– subscriber location

– subscriber state

Subscriber Identity

M

This IE identifies the subscriber for which the information is requested. The identity can be:

– IMSI: The IMSI shall be accompanied by a LMSI if one was provided by the VLR.

M Mandatory (The IE shall always be sent)

9.9.4 Provide Roaming Number

9.9.4.1 Description

This IF is specified in 3GPP TS 03.18 [3] and used by the HLR to request a roaming number from the VLR.

9.9.4.2 Information Elements

Provide Roaming Number contains the following CAMEL specific IE:

Information element name

Required

Description

Suppression Of Announcements

C

This IE indicates that announcements or tones generated as a result of unsuccessful call setup shall be suppressed.

Call Reference Number

M

This IE carries the Call Reference Number provided by the GMSC in the Send Routeing Info IF.

GMSC Address

M

This IE is the E.164 address of the GMSC

Alerting Pattern

C

This IE indicates the kind of Alerting Pattern to be applied.

GMSC CAMEL Phases

C

This IE indicates the CAMEL Phases supported in the GMSC.

M Mandatory (The IE shall always be sent)

C Conditional (The IE shall be sent, if received from the GMSC in the Send Routeing Info)

9.10 VLR to HLR information flows

9.10.1 Insert Subscriber Data ack

9.10.1.1 Description

This IF is specified in 3GPP TS 09.02 [4] and used by the VLR to indicate to the HLR the result of the Insert Subscriber Data IF.

9.10.1.2 Information Elements

Insert Subscriber Data ack contains the following CAMEL specific IE:

Information element name

Required

Description

Supported CAMEL Phases

C

This IE identifies which CAMEL phases are supported by the MSC/VLR.

C Conditional (The IE shall always be sent when a CSI has been included in the ISD)

9.10.2 Provide Subscriber Info ack

9.10.2.1 Description

This IF is used by the VLR to provide the requested information to the HLR.

9.10.2.2 Information Elements

Provide Subscriber Info ack contains the following CAMEL specific IE:

Information element name

Required

Description

Location Information

C

This IE indicates the location of the served subscriber. The elements contained in this IE are specified in 3GPP TS 03.18 [3].

Subscriber State

C

This IE indicates the status of the MS. The states are:

– CAMELBusy: The MS is engaged on a transaction for a mobile originating or terminated circuit-switched call.

– NetworkDeterminedNotReachable: The network can determine from its internal data that the MS is not reachable.

– AssumedIdle: The state of the MS is neither "CAMELBusy" nor "NetworkDeterminedNotReachable".

C Conditional (The IE shall be sent, if requested and available)

9.10.3 Update Location

9.10.3.1 Description

This IF is used by the VLR to provide the information about supported CAMEL phases to the HLR.

9.10.3.2 Information Elements

Update Location contains the following CAMEL specific IE:

Information element name

Required

Description

Supported CAMEL phases

C

This IE indicates which phases of CAMEL are supported. It shall be present if a CAMEL phase different from phase 1 is supported. Otherwise may be absent.

9.10.4 Restore Data

9.10.4.1 Description

This IF is used by the VLR to provide the information about supported CAMEL phases to the HLR.

9.10.4.2 Information Elements

Restore Data contains the following CAMEL specific IE:

Information element name

Required

Description

Supported CAMEL phases

C

This IE indicates which phases of CAMEL are supported. It shall be present if a CAMEL phase different from phase 1 is supported. Otherwise may be absent.

9.11 HLR to GMSC information flows

9.11.1 Send Routeing Info ack

9.11.1.1 Description

This IF is specified in 3GPP TS 03.18 [3] and is used by the HLR to transfer the requested routeing information to the GMSC.

9.11.1.2 Information Elements

Send Routeing Info ack contains the following CAMEL specific IE:

Information element name

Required

Description

Location Information

C

This IE indicates the location of the served subscriber.

O-CSI

C

This IE identifies the subscriber as having originating CAMEL services.

Shall be sent if O-CSI is active, and CFU or CFNRc has been invoked, or if both O-CSI and T-CSI are active.

Subscriber State

C

This IE indicates the status of the MS. The possible values of the IE are:

– CAMELBusy: The VLR has indicated that the MS is engaged on a transaction for a mobile originating or terminated circuit-switched call.

– NetworkDeterminedNotReachable: The VLR has indicated that the network can determine from its internal data that the MS is not reachable.

– AssumedIdle: The VLR has indicated that the state of the MS is neither "CAMELBusy" nor "NetworkDeterminedNotReachable".

– NotProvidedFromVLR: The VLR did not provide any information on subscriber state even though it was requested.

T-CSI

C

This IE identifies the subscriber as having terminating CAMEL services.

Shall be sent if T-CSI is active and no Suppress T‑CSI indicator is present in the SRI.

Basic Service Code

C

This IE indicates the type of basic service i.e., teleservice or bearer service.

CUG Subscription Flag

C

This IE indicates if the called party has a CUG subscription. It shall only be sent if the T-CSI is active and included in the Send Routing Information ack.

C Conditional (The IE shall be sent, if available)

C’ Conditional (The IE shall be sent, if available and indicated by Subscriber Information in Send Routeing Information ack indicator.)

Location Information contains the following information:

Information element name

Required

Description

Location Number

C’

See 3GPP TS 03.18 [3].

CellIdOrLAI

C’

See 3GPP TS 03.18 [3].

Geographical Information

C’

See 3GPP TS 03.18 [3].

Age Of Location Information

C’

See 3GPP TS 03.18 [3].

VLR number

C

See 3GPP TS 03.18 [3].

C Conditional (The IE shall be sent, if available)

C’ Conditional (The IE shall be sent, if available and indicated by Subscriber Information in Send Routeing Information ack indicator.)

O-CSI is defined in section .

T-CSI contains the following information:

Information element name

Required

Description

gsmSCF Address

M

This IE is described in section 6.1.

Service Key

M

This IE is described in section 6.1.

Default Call Handling

M

This IE is described in section 6.1.

TDP List

M

This IE is described in section 6.1.

CAMEL Capability Handling

C

This IE is described in section 6.1. If this IE is absent, this indicates that CAMEL phase 1 is asked.

M Mandatory

C Conditional

9.12 GMSC to HLR information flows

9.12.1 Send Routeing Info

9.12.1.1 Description

This IF is described in 3GPP TS 03.18 [3] and is used to request information from the HLR to route an MT call.

9.12.1.2 Information Elements

Send Routeing Info contains the following CAMEL specific IE:

Information element name

Required

Description

Alerting Pattern

C

This IE indicates the kind of Alerting Pattern to be applied.

Suppression Of Announcement

C

This IE indicates that announcements or tones generated as a result of unsuccessful call setup shall be suppressed.
Shall be sent in the interrogation if available, i.e., when it has been received from the gsmSCF.

Suppress T-CSI

C

This IE indicates that T-CSI shall be suppressed.
Shall always be sent in the second interrogation

Supported CAMEL Phases

M

This IE lists the supported CAMEL phases.

Call Reference Number

M

This IE carries the Call Reference Number allocated for the call by the GMSC.

Shall be allocated once per call and sent in both first and second interrogations.

GMSC Address

M

This IE is the E.164 address of the GMSC

C Conditional (The IE shall be sent, if received from the gsmSCF or set by the gsmSSF)

M Mandatory (The IE shall always be sent when the GMSC supports CAMEL)

9.13 MSC to gsmSCF information flows

9.13.1 SS Invocation Notification

9.13.1.1 Description

This IF is generated by the MSC when it shall notify the gsmSCF of a supplementary service invocation.

9.13.1.2 Information Elements

The following information elements are required:

Information element name

Required

Description

Notification Event

M

This IE indicates the supplementary service invocation, resulting in the SS Invocation Notification IF.

Only the following Supplementary Services are allowed : Explicit Call Transfer, Call Deflection, Multi Party.

Notification Event Specific Information

C

In the case of ECT, the sending entity shall include the called party for each call originated by the subscriber and relevant to the ECT invocation. Note : the subscriber may have originated zero, one or two calls relevant to the ECT service.

In the case of CD, the deflected to number shall be included in this information element.

In the case of MPTY, this IE shall be omitted.

IMSI

M

This IE identifies the mobile subscriber who has invoked the supplementary service to be notified.

MSISDN

M

This IE identifies the mobile subscriber who has invoked the supplementary service to be notified.

M Mandatory (The IE shall always be sent)

C Conditional (The IE shall be sent if applicable)

9.14 VMSC to GMSC information flows

9.14.1 Resume Call Handling

9.14.1.1 Description

This IF is described in 3GPP TS 03.79 [15] and is used to request the GMSC to take over handling the call so that it can be forwarded from the GMSC.

9.14.1.2 Information Elements

Resume Call Handling contains the following CAMEL specific IE:

Information element name

Required

Description

O-CSI

C

This IE contains O-CSI without triggering criteria. It indicates that CAMEL handling applies for a forwarded call.
Shall be present if CAMEL handling applies; otherwise shall be absent.

C Conditional (The IE shall be sent if applicable)

9.15 MSC to VLR information flows

9.15.1 Send Info For Outgoing Call

9.15.1.1 Description

This IF is described in 3GPP TS 03.18 [3] and is used to request the VLR to provide information to handle an outgoing call.

9.15.1.2 Information Elements

Send Info For Outgoing Call contains the following CAMEL specific IE

Information element name

Required

Description

Suppress O-CSI

C

This IE indicates that O-CSI shall be suppressed.
Shall always be sent in the second interrogation.

C Conditional (The IE shall be sent if applicable)

9.15.2 Send Info For Reconnected Call

9.15.2.1 Description

This IF is used to request the VLR to provide information to handle a reconnected call.

9.15.2.2 Information Elements

Send Info For Reconnected Call contains the following IE

Information element name

Required

Description

Called number

M

E.164 number of the call destination.

Bearer service

C

Bearer service required for the MO call, derived from the GSM bearer capability information received in the setup request from the MS. One of bearer service or teleservice shall be present.

Teleservice

C

Teleservice required for the MO call, derived from the GSM bearer capability information received in the setup request from the MS or from the emergency setup request from the MS. One of bearer service or teleservice shall be present.

CUG index

C

For the definition of this IE, see ETS 300 546 [9]. Shall be present if it was received in the setup request from the MS.

Suppress preferential CUG

C

For the definition of this IE, see ETS 300 546 [9]. Shall be present if it was received in the setup request from the MS.

Suppress CUG outgoing access

C

For the definition of this IE, see ETS 300 546 [9]. Shall be present if it was received in the setup request from the MS.

Suppress O-CSI

C

This IE indicates that O-CSI shall be suppressed.
Shall always be sent in the second interrogation.

M Mandatory (The IE shall always be sent)

C Conditional (The IE shall be sent if applicable)

9.16 VLR to MSC information flows

9.16.1 Complete Call

9.16.1.1 Description

This IF is described in 3GPP TS 03.18 [3] and is used to instruct the MSC to continue the connection of a call.

9.16.1.2 Information Elements

Complete Call contains the following CAMEL specific IE:

Information element name

Required

Description

O-CSI

C

This IE indicates that CAMEL handling applies for an MO call.
Shall be present in the response to the first interrogation for an MO call if CAMEL handling applies; otherwise shall be absent. Shall be absent in the response to the second interrogation for an MO call and in the response to the interrogation for an MT call.

Call Reference Number

M

This IE carries the Call Reference Number provided by the HLR in the Provide Roaming Number IF.

GMSC Address

M

This IE is the E.164 address of the GMSC.

M Mandatory (The IE shall always be sent)

C Conditional (The IE shall be sent if applicable)

9.16.2 Process Call Waiting

9.16.2.1 Description

This IF is described in 3GPP TS 03.18 [3] and is used to instruct the MSC to continue the connection of a waiting call.

9.16.2.2 Information Elements

Process Call Waiting contains the following CAMEL specific IE:

Information element name

Required

Description

Call Reference Number

M

This IE carries the Call Reference Number provided by the HLR in the Provide Roaming Number IF.

GMSC Address

M

This IE is the E.164 address of the GMSC.

M Mandatory (The IE shall always be sent)

9.16.3 Send Info For Incoming Call ack

9.16.3.1 Description

This IF is described in 3GPP TS 03.18 [3] and is used to indicate that the incoming call for which the MSC requested subscription information shall be forwarded.

9.16.3.2 Information Elements

Send Info For Incoming Call ack contains the following CAMEL specific IE:

Information element name

Required

Description

O-CSI

C

This IE indicates that CAMEL handling applies for a forwarded call.
Shall be present if CAMEL handling applies; otherwise shall be absent.

Suppression Of Announcement

C

This IE indicates that announcements or tones generated when the call is forwarded shall be suppressed.
Shall be sent if it was received in the Provide Roaming Number for this call.

Call Reference Number

M

This IE carries the Call Reference Number provided by the HLR in the Provide Roaming Number IF.

GMSC Address

M

This IE is the E.164 address of the GMSC.

SS-CSI

C

This IE indicates that SS invocation notification applies for the call.

Shall be present if SS invocation notification is required if Call Deflection is invoked; otherwise shall be absent.

M Mandatory (The IE shall always be sent)

C Conditional (The IE shall be sent if applicable)

9.16.4 Send Info For Incoming Call negative response

9.16.4.1 Description

This IF is described in 3GPP TS 03.18 [3] and is used to indicate that the incoming call for which the MSC requested subscription information shall not be connected.

9.16.4.2 Information Elements

Send Info For Incoming Call negative response contains the following CAMEL specific IE which may be attached as a IE to any of the negative response values defined in 3GPP TS 03.18 [3]:

Information element name

Required

Description

Suppression Of Announcement

C

This IE indicates that announcements or tones generated as a result of unsuccessful call setup shall be suppressed.
Shall be sent if it was received in the Provide Roaming Number for this call.

C Conditional (The IE shall be sent if applicable)