The current version of ITU-T Rec. H.323 requires two completely independent transports: one for
RAS and another for H.225.0 call signalling. For several reasons, one of them is FW/NAT traversal;
it would be advantageous to be able to use the same transp
ITU-T H.460.17-2005 history
2005ITU-T H.460.17-2005 Using H.225.0 call signalling connection as transport for H.323 RAS messages Study Group 16