The port number used by the remote end of the tcp connection
for the circuit. the initiator of a connection will
dynamically assign a port number. the other end of the
connection will have a well-known port number applicable to
the encapsulation used by the connection - e.g. the value of
alpsPeerLocalAtpPort for ATP connections.
If this connection was initiated by the local router,
a port number will be dynamically selected. Otherwise the value of
alpsPeerLocalAtpPort will be used (for ATP connections)