3 Definitions, symbols and abbreviations

24.1473GPPConferencing using the IP Multimedia (IM) Core Network (CN) subsystemRelease 17Stage 3TS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP TS 21.905 [1], and the following apply:

Conferencing AS: an Application Server that supports functionality specific to a SIP conference focus

Ad-hoc conference: An unscheduled conference that is created on-the-fly by a conference participant.

The following terms and definitions given in 3GPP TS 23.228 [2] apply (unless otherwise specified):

Public Service Identity

Three-way session

For the purposes of the present document, the following terms and definitions given in 3GPP TS 23.228 [6] subclauses 4.3.3.1 and 4.6 apply:

IP-Connectivity Access Network (IP-CAN)

The following terms and definitions given in RFC 4353 [8] apply (unless otherwise specified):

Conference

Conference-Aware Participant

Conference notification service

Conference Policy

Conference-Unaware Participant

Conference URI

Focus

Mixer

Participant

Tightly Coupled Conference

The following terms and definitions given in RFC 4579 [9] apply (unless otherwise specified):

Conference Factory URI

For the purposes of the present document, the following terms and definitions given in RFC 3840 [19] apply:

Feature parameter

For the purposes of the present document, the following terms and definitions given in 3GPP TS 23.002 [2] subclauses 4.1.1.1 and 4a.7 apply:

Call Session Control Function (CSCF)

Home Subscriber Server (HSS)

Media Gateway Control Function (MGCF)

Multimedia Resource Function Controller (MRFC)

Multimedia Resource Function Processor (MRFP)

For the purposes of the present document, the following terms and definitions given in 3GPP TS 23.218 [5] subclause 3.1 apply:

Filter criteria

Initial filter criteria

Initial request

Subsequent request

For the purposes of the present document, the following terms and definitions given in 3GPP TS 23.228 [7] subclauses 4.3.3.1 and 4.6 apply:

Interrogating-CSCF (I-CSCF)

Proxy-CSCF (P-CSCF)

Public user identity

Serving-CSCF (S-CSCF)

For the purposes of the present document, the following terms and definitions given in 3GPP TR 21.905 [1] apply:

User Equipment (UE)

For the purposes of the present document, the following terms and definitions given in RFC 4582 [28] apply:

Floor

Floor chair

Floor control server

Floor participant

3.2 Abbreviations

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

AMR Adaptive Multi-Rate

AS Application Server

BFCP Binary Floor Control Protocol

CN Core Network

CSCF Call Session Control Function

FQDN Fully Qualified Domain Name

HSS Home Subscriber Server

I-CSCF Interrogating CSCF

IM IP Multimedia

IMS IP Multimedia CN subsystem

IP Internet Protocol

IP-CAN IP-Connectivity Access Network

MGCF Media Gateway Control Function

MRFC Multimedia Resource Function Controller

MRFP Multimedia Resource Function Processor

P-CSCF Proxy CSCF

PSI Public Service Identity

S-CSCF Serving CSCF

SDP Session Description Protocol

SIP Session Initiation Protocol

TLS Transport Layer Security

UE User Equipment

VBC Volume Based Charging