8 Bearer control

26.2353GPPDefault codecsPacket switched conversational multimedia applicationsTS

The media control is based on declaration of terminal media capability sets in SDP part of appropriate SIP messages.

Relation of application level SDP signalling and radio access bearer assignment is defined outside the present document. The QoS architecture and concept for WCDMA and GERAN is specified in 3GPP TS 23.107 [21]. The end-to-end QoS framework involving GPRS and UMTS is specified in 3GPP TS 23.207 [22]. The applicable general QoS mechanism and service description for the GPRS in GSM and UMTS is specified in 3GPP TS 23.060 [23].