3 Definitions, symbols and abbreviations

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

3.1 Definitions

For the purposes of the present document, the following terms and definitions apply:

Basic Call State Model (BCSM): The BCSM provides a high-level model of GMSC- or MSC/VLR-activities required to establish and maintain communication paths for users. As such, it identifies a set of basic call activities in a GMSC or MSC/VLR and shows how these activities are joined together to process a basic call.

Call Control Function (CCF): The CCF is the Call Control Function in the network that that provides call/service processing and control (see ITU-T Q.1214 [6]).

Detection Points (DP): The points in processing at which notifications (to the service logic) can occur and transfer of control (to the gsmSCF) is possible are called Detection Points (DPs).

GSM Service Control Function (gsmSCF): A functional entity that contains the CAMEL service logic to implement OSS. It interfaces with the gsmSSF, the gsmSRF and the HLR.

GSM Service Switching Function (gsmSSF): A functional entity that interfaces the MSC/GMSC to the gsmSCF. The concept of the gsmSSF is derived from the IN SSF, but uses different triggering mechanisms because of the nature of the mobile network.

GSM Specialised Resource Function (gsmSRF): A functional entity which provides various specialized resources. It interfaces with the gsmSCF and with the MSC. This entity is defined in ITU‑T Q.1214 ([6]) with variations defined in the specification.

NA (North American): A prefix attached to certain information items used by North American PLMNs in connection with routing a call to a preferred or dialled long distance carrier.

Location Information: Indicates the location of the served subscriber. The provision of location information is independent of the MS status. As part of the location information, an indication of the age of this information may be delivered.

Originating Basic Call State Model (O-BCSM): The originating half of the BCSM. The O-BCSM corresponds to that portion of the BCSM associated with the originating party.

Originating CAMEL Subscription Information (O-CSI): The O-CSI identifies the subscriber as having originating CAMEL services.

Point In Call (PIC): PICs identify MSC/VLR (GMSC) activities associated with one or more basic call/connection states of interest to OSS service logic instances.

Service Key: The Service Key can identify to the gsmSCF the service logic that it should apply. The Service Key is administered by the HPLMN, and is passed transparently by the VPLMN/IPLMN to the gsmSCF. The Service Key is a part of the T/O-CSI.

Subscriber State: See 3GPP TS 02.78 [2].

Supplementary Service Notification CAMEL Subscription Information (SS-CSI): The SS-CSI identifies the subscriber as having supplementary service invocation notification CAMEL services.

Terminating Basic Call State Model (T-BCSM): The terminating half of the BCSM. The T-BCSM corresponds to that portion of the BCSM associated with the terminating party.

Terminating CAMEL Subscription Information (T-CSI): The T-CSI identifies the subscriber as having terminating CAMEL services.

Translation Information Flag (TIF-CSI) : The TIF-CSI is a flag in the CAMEL subscriber data which indicates that when the subscriber registers a forwarded-to number, that the HLR shall not attempt to perform any translation, number format checks, prohibited FTN checks, call barring checks.

USSD CAMEL Subscription Information (U-CSI) : The U-CSI identifies a set of subscriber specific mappings from a USSD service code to a gsmSCF address.

USSD General CAMEL Service Information (UG-CSI) : The UG-CSI globally identifies a set of mappings from a USSD service code to a gsmSCF address. The global mapping applies to all HPLMN subscribers. If, for a particular service code, both U‑CSI and UG-CSI are applicable then the U-CSI shall take precedence.

3.2 Abbreviations

Abbreviations used in the present document are listed in 3GPP TS 01.04 [1].

For the purposes of the present document, the following abbreviations apply:

BCSM Basic Call State Model

CAMEL Customized Applications for Mobile network Enhanced Logic

DP Detection Point

EDP Event Detection Point

GMSC Gateway MSC

gsmSCF GSM Service Control Function

gsmSRF GSM Specialised Resource Function

gsmSSF GSM Service Switching Function

HLR Home Location Register

HPLMN Home PLMN

IE Information Element

IF Information Flow

IP Intelligent Peripheral

IPLMN Interrogating PLMN

MSC Mobile service Switching Centre

NA North American

O-BCSM Originating Basic Call State Model

O-CSI Originating CAMEL Subscription Information

ODB Operator Determined Barring

OSS Operator Specific Service

PIC Point In Call

PLMN Public Land Mobile Network

SLPI Service Logic Program Instance

SMF Service Management Function

SS-CSI Supplementary Service Notification CAMEL Subscription Information

T-BCSM Terminating Basic Call State Model

T-CSI Terminating CAMEL Subscription Information

TDP Trigger Detection Point

TIF-CSI Translation Information Flag

U-CSI USSD CAMEL Subscription Information

UG-CSI USSD General CAMEL Service Information

VLR Visitor Location Register

VPLMN Visited PLMN