METHOD OF OPERATING A FIRST COMMUNICATION DEVICE FOR RECEIVING A MEDIA DATA STREAM FROM AT LEAST ONE SECOND COMMUNICATION DEVICE, INCLUDING A COMMUNICATION DEVICE, A TELECOMMUNICATIONS SERVER AND A TELECOMMUNICATIONS SYSTEM

摘要

A method of operating a first communication device (3) for receiving a media data stream (64) from at least one second communication device (5) in a telecommunications system. The first communication device (3) exchanging with the at least one second communication device (5) Session Initiation Protocol, SIP, messages (60, 62, 63, 64, 67, 70) during a SIP dialogue. The SIP messages (67, 70) including a late media indicator (68, 71) that includes an indication that the media stream (64) continues (72) after the SIP dialogue has terminated, or an indication (75) of support of receiving media stream after the SIP dialogue has terminated. The SIP dialogue controls the media data stream (64, 72). The first communication device (3) receives the media data stream (64, 72) from the second communication device (5). The first communication device (3) continues to receive the media data stream (72) after the SIP dialogue has ended.