Seamless operation of IP telephony requires the ability to initiate, redirect and reconfigure media connections in a fast and efficient manner. The reduction of "dead time" and quick response to user actions both demand that media operations be carried out as quickly as possible. For example, a caller might be redirected from an endpoint that does not answer to a voice messaging endpoint that answers automatically. A call may suspend media transfer when a user invokes "hold", then should re-establish media transfer quickly when the user re-joins the call. Similarly, media connections should be quickly reconfigured when a user activates a conference or is switched to an automatic announcement. Such capabilities are available to the simple endpoint type (SET) as described in Annex F of [ITU-T H.323].
ITU-T H.460.6-2013 Referenced Document
ITU-T H.225.0-2009 Call signalling protocols and media stream packetization for packet-based multimedia communication systems (Study Group 16)*， 2024-04-20 Update
ITU-T H.245-2011 Control protocol for multimedia communication (Study Group 16)
ITU-T H.323-2009 Packet-based multimedia communications systems (Study Group 16)
ITU-T H.460.1-2013 Guidelines for the use of the generic extensible framework (Study Group 16)
2002ITU-T H.460.6-2002 Extended Quick Connection Features - H Series: Multimedia Infrastructure and Audiovisual Services Systems - Multimedia Supplementary Services Research Group 16