[cisco-voip] About Voip Technology : RTP over TCP

[dave o'leary]

At 12:20 PM 5/14/2005 -0400, Jon Carnes wrote:
>On Fri, 2005-05-13 at 05:10, Atul Thosar wrote:
> > 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

I'm a little confused - the disadvantages that you list for TCP
(especially # 2 and # 3) are pretty fundamental to its design and
the objectives of the protocol.  If you have a different set of requirements,
why don't you use a different transport protocol?
What is it about TCP that you like such that you want to use it?

thanks,
                                         dave

> > 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 ?