Re: Freedomphone (fwd from [email protected])

Eugen Leitl <[email protected]> Thu, 20 Nov 2003 16:26:09 +0100

Newsgroups	gmane.comp.audio.speak-freely.general
Message-ID	<[email protected]>

----- Forwarded message from Dave Howe <[email protected]> -----

From: "Dave Howe" <[email protected]>
Date: Thu, 20 Nov 2003 14:46:45 -0000
To: "Email List: Cypherpunks" <[email protected]>
Subject: Re: Freedomphone
X-Mailer: Microsoft Outlook Express 6.00.2800.1158

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*

----- End forwarded message -----
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