This object is used to represent the UDP port associated
with the protocol.
If the value of cmgwSignalProtocol is 'mgcp(2)' and the
value of cmgwSignalProtcolVersion is '1.0', the default
value of this object is '2727'.
If the value of cmgwSignalProtocol is 'h248(3)' and the
value of cmgwSignalProtcolVersion is '1.0', the default
value of this object is '2944'.