new(client:Client, counterpart:JID, sid:String)
read onlychatId:String
read onlysid:String
accept():Void
addMedia(streams:Array<MediaStream>):Void
audioTracks():Array<MediaStreamTrack>
dtmf():Null<DTMFSender>
hangup():Void
supplyMedia(streams:Array<MediaStream>):Void
videoTracks():Array<MediaStreamTrack>