This TS introduces the required protocols for packet switched conversational multimedia applications within 3GPP IP Multimedia Subsystem. Visual and sound communications are specifically addressed. The intended applications are assumed to require low-delay, real-time functionality.
This TS describes the required protocol related elements for 3G PS multimedia terminal:
required SDP signalling regarding the media type bit rate, packet size, packet transport frequency;
usage of RTP payload for media types;
This TS is applicable, but not limited, to packet switched video telephony. The applicability of this TS to GERAN is for further study.