The port number on the intercepting device to which the
Mediation Devices directs RTCP Receiver Reports and Nacks.
This object is only relevant when the value of
cTapMediationTransport is 'rtpNack'.
This port is assigned by the intercepting device, rather than
by the Mediation Device or manager application. The value of
this MIB object has no effect before activating the
cTapMediationEntry.