MEDIA CHANNEL MANAGEMENT

摘要

A method of managing a unicast-based media session is disclosed. A user terminal ( 100 ) having access to channel identifiers of media channels ( 400, 410 ) available at a media server compiles a SIP-based channel request comprising a channel identifier of one of the available media channels ( 400, 410 ) and a port identifier of at least one media input port of the terminal ( 100 ). This message is sent to a network node ( 200, 300 ) for initiating delivery of media data of selected media channel to the announced media input port ( 115 ). The SIP-based data signaling also allows switching between unicast-based media channels and switching between unicast-based and multicast/broadcast-based media channels during the ongoing media session.