Immediately remove the conference as media session listener when a
client reconnect to a conference following a network problem. Under such circumstances, the conference server already has an active session for the device but as there was an issue on the device side, the latter created a new one. The conference server therefore has to detach the old session from the mixer session, remove the old participant device as many informations may have changed (for example callID, from and to tags, stream SSRC and labels) and terminate the session. Nonetheless, the server conference call state changed should not be called on the session termination as there is no need to check if the conference is terminated and kick off this process if needed
Edited by Andrea Gianarda