5B Data framing and securing

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

5B.1 General

Data framing RTP and other data formats that serve as containers, and their functions for data confidentiality and integrity.

5B.2 UE

A UE supporting WebRTC shall support the WebRTC endpoint functionality as specified in RFC 8825 [30] clause 5, excluding requirements, if any, relating to specific audio and video codecs that are indirectly referenced within the RFC 8825 [30] clause 5.

5B.3 WWSF (WebRTC Web Server Function)

There are no data framing requirements for the WWSF.

NOTE: Any application downloaded from the WWSF that requires data framing is expected to use it in accordance with WebRTC non-browser support of data framing.

5B.4 eP-CSCF (P-CSCF enhanced for WebRTC)

The eP-CSCF and eIMS-AGW in conjunction shall support the WebRTC gateway functionality as specified in RFC 8825 [30] clause 5 excluding requirements, if any, relating to specific audio and video codecs that are indirectly referenced within the RFC 8825 [30] clause 5.

The eP-CSCF and eIMS-AGW in conjunction do not need to not support Bundle (specified in RFC 8843 [25]) and RTCP multiplexing (specified in RFC 5761 [38]) and any of the related RTP/ RTCP extensions.

The eP-CSCF and eIMS-AGW in conjunction may choose to not support the Datachannel (specified in rfc 8831 [16]).