3 Definitions and abbreviations

03.183GPPBasic call handlingRelease 1998TS

3.1 Definitions

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

A subscriber: calling mobile subscriber.

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

C subscriber: 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.

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

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

PRN Provide Roaming Number

SGSN Serving GPRS support node

SIFIC Send Information For Incoming Call

SIFOC Send Information For Outgoing Call

SIWF Shared Inter Working Function

SIWFS SIWF Server. SIWFS is the entity where the used IWU is located.

SRI Send Routeing Information

UDUB User Determined User Busy

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