Dear Sasha and other NAT/firewall traversal experts,
When I reported the Q.5 progress at the recent Japan national meeting for the coming SG16 meeting, Mr. Hideaki Yamada, KDDI, pointed out that G.769/Y.1242 (Circuit multiplication equipment optimized for IP-based networks) uses the following RTP multiplexing:
1/ Ordinary RTP header is used with a particular payload type. 2/ Inside the RTP payload, multiple voice, facsimile and voice band data channels are multiplexed with the "short packet" structure.
A relevant part excerpt of G.769 is attached.
Since G.769 is under the responsibility of WP1/16, we should at least be aware of this method of media signal multiplexing. I do not have a particular reason to make alignment between H.ma and G.769 due to their different requirements. But if there is anything good for our NAT/firewall traversal solution, please take that into account.