About Voip Technology : RTP over TCP

Archived from groups: comp.dcom.videoconf (More info?)

hello All

I am reading information about VoIP technology
For that i am concentrating on SIP (Session Initiation Protocol) and
RTP (Real Time Transport Protocol).

I am interested in implementing RTP over TCP
I found that there are some disadvantages of TCP, some are

1) TCP doesn't support multicasting.

2) Through TCP is reliable, it heavily depends on retransmission of
lost or corrupted packets. That increases Delay. Our aim is real
time delivery of packets not reliability.

3) TCP congestion control mechanism decreases the congestion window
when packet losses are detected.


Apart from these flaws i am interested in implementing RTP over TCP

Is it possible ?
What is feasibility of implementing RTP over TCP ?

One more point is What is feasibility of implementing RTP over TCP in
case of NAT (Network Address Translation) is there ?

Need your valuable suggestion.

Thank You !

Atul