SIP over TCP

[usa2k]

I believe TCP has too much overhead for practical real-time conversation - or at least that was true as VoIP was developed.
It used to be code had to be small because memory and processing power was limited. Now code can be ponderous, but
fast to build the app. Still, I don't think voice technology is ready for bloat.

[claganga]

I believe TCP has too much overhead for practical real-time conversation - or at least that was true as VoIP was developed.
It used to be code had to be small because memory and processing power was limited. Now code can be ponderous, but
fast to build the app. Still, I don't think voice technology is ready for bloat.

Well TCP would be just for signalling, not RTP. SCCP/SKINNY uses only TCP or TLS for signalling never supported UDP, as far as I know.

TCP could be an advantage esp over wireless networks, not counting 802.11, since the invite could be lost esp in a ring group scenario.