3 Definitions and abbreviations

24.3713GPPProtocol specificationRelease 17Stage 3TSWeb Real-Time Communications (WebRTC) access to the IP Multimedia (IM) Core Network (CN) subsystem (IMS)

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [1].

For the purposes of the present document, the following terms and definitions given in 3GPP TS 23.228 [4] annex U apply:

P-CSCF enhanced for WebRTC (eP-CSCF)

WebRTC Authorization Function (WAF)

WebRTC IMS Client (WIC)

WebRTC Web Server Function (WWSF)

For the purposes of the present document, the following terms and definitions given in RFC 8445 [45] apply:

ICE Lite

Full ICE

Host ICE candidates

For the purposes of the present document, the following terms and definitions given in RFC 8825 [30] apply:

WebRTC endpoint

WebRTC non-browser

3.2 Abbreviations

For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [1].

CN Core Network

CSCF Call Session Control Function

DCEP Data Channel Establishment Protocol

eP-CSCF enhanced Proxy CSCF

IM IP Multimedia

IP Internet Protocol

WAF WebRTC Authorization Function

WebRTC Web Real-Time Communication

WWSF WebRTC Web Server Function