3 Definitions and abbreviations

23.0183GPPBasic call handlingRelease 17Technical realizationTS

3.1 Definitions

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

A subscriber: the calling mobile subscriber

B subscriber: the mobile subscriber originally called by the A subscriber

C subscriber: the subscriber to whom the B subscriber has requested that calls be forwarded
The C subscriber may be fixed or mobile.

Location Information: information to define the whereabouts of the MS, and the age of the information defining the whereabouts

PLMN Bearer Capability: information transferred over the UMTS or GSM access interface to define the information transfer capabilities to be used between the MS and the network for a circuit-switched connection

3.2 Abbreviations

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

A&O Active & Operative

ACM Address Complete Message

ANM ANswer Message

AoC Advice of Charge

BC Bearer Capability

BOIC-exHC&BOIZC Barring of Outgoing International Calls except those directed to the HPLMN Country & Barring of Outgoing InterZonal Calls

BOIZC Barring of Outgoing InterZonal Calls

BOIZC-exHC Barring of Outgoing InterZonal Calls except those directed to the HPLMN Country

CCBS Completion of Calls to Busy Subscriber

CFB Call Forwarding on Busy

CFNRc Call Forwarding on mobile subscriber Not Reachable

CFNRy Call Forwarding on No Reply

CFU Call Forwarding Unconditional

CLIP Calling Line Identity Presentation

CLIR Calling Line Identity Restriction

COLP COnnected Line identity Presentation

COLR COnnected Line identity Restriction

CSG Closed Subscriber Group

CUG Closed User Group

CW Call Waiting

FTN Forwarded-To Number

FTNW Forwarded-To NetWork

GMSCB Gateway MSC of the B subscriber

GPRS General Packet Radio Service

HLC Higher Layer Compatibility

HLRB The HLR of the B subscriber

HPLMNB The HPLMN of the B subscriber

IAM Initial Address Message

IPLMN Interrogating PLMN – the PLMN containing GMSCB

IWU Inter Working Unit

LLC Lower Layer Compatibility

MO Mobile Originated

MPTY MultiParTY

MT Mobile Terminated

NDUB Network Determined User Busy

NRCT No Reply Call Timer

PgA Paging Area

PLMN BC (GSM or UMTS) PLMN Bearer Capability

PRN Provide Roaming Number

PUESBINE Provision of User Equipment Specific Behaviour Information to Network Entities

SCUDIF Service Change and UDI/RDI Fallback

SGSN Serving GPRS support node

SIFIC Send Information For Incoming Call

SIFOC Send Information For Outgoing Call

SRI Send Routeing Information

TO Trunk Originated

UDUB User Determined User Busy

UESBI-Iu User Equipment Specific Behaviour Information over the Iu interface

VLRA The VLR of the A subscriber

VLRB The VLR of the B subscriber

VMSCA The Visited MSC of the A subscriber

VMSCB The Visited MSC of the B subscriber

VPLMNA The Visited PLMN of the A subscriber

VPLMNB The Visited PLMN of the B subscriber