Dave Howe DaveHowe at
Thu Nov 20 06:46:45 PST 2003

Neil Johnson wrote:
> On Wednesday 19 November 2003 05:33 pm, Dave Howe wrote:
> SIP is just the part of the VoIP protocols that handling signaling
> (off-hook, dialing digits, ringing the phone, etc.). The voice data
> is handled by Real-Time Streaming Protocol (RTSP), one stream for
> each direction.
*nods* and it is normally UDP, which is good for latency and lousy for NAT
traversal. Partysip supports rtsp over tcp I believe - as a proxy, which
adds yet another layer of latency *sigh*

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