The state of the RTP connection, from the perspective of the local RTP protocol machine: rtpListening - connection open; waiting for other end to call in rtpCalling - connection opened, attempting to call out, have not yet received any data from other end rtpConnected - connection is active; responded to a call-in or received other end's TCID from a call-out attempt rtpPathSwitching - the path switch timer is running; attempting to find a new path for this connection. rtpDisconnecting - no sessions are using this connection; in process of bringing it down other - the connection is not in any of the states listed above.