Re: [rtcweb] Friday Agenda: Re: Friday Call details for signaling discussion

Iñaki Baz Castillo <ibc@aliax.net> Thu, 20 October 2011 13:32 UTC

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Date: Thu, 20 Oct 2011 15:31:52 +0200
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From: =?UTF-8?Q?I=C3=B1aki_Baz_Castillo?= <ibc@aliax.net>
To: Harald Alvestrand <harald@alvestrand.no>
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Subject: Re: [rtcweb] Friday Agenda: Re: Friday Call details for signaling discussion
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2011/10/20 Harald Alvestrand <harald@alvestrand.no>;:
> In his category of "info signalling", I would quibble a bit in that I see
> "channel-related signalling" (a term I just invented, describing which media
> is sent on which SSRC on which port) as distinct from "identity-related
> signalling", where the whole question of "who am I talking to" is relevant.
>
> I believe "channel-related signalling" needs to be treated together with
> "media signalling".

Hi Harald, after re-reading this mail from you I've realized that I
don't fully understand it.

For example, a SIP INVITE has:

1) Request URI and headers, which contain the identity information,
the destination of the request, and so. This is what I called
"JS-Server Information Signaling".

2) An SDP, which contains media description. This is what I've called
"JS-Server Media Signaling".

Of course both are carried together (the "JS-Server Information
Signaling" carries the "JS-Server Media Signaling").

Initially I understood that your "channel-related signalling" is the
same concept as my "JS-Server Information Signaling" (bullet 1), but
then you said:

> "channel-related signalling" (a term I just invented, describing which media
> is sent on which SSRC on which port) as distinct from "identity-related
> signalling", where the whole question of "who am I talking to" is relevant.

What do you mean with "channel-related signalling"?

Thanks a lot.


-- 
Iñaki Baz Castillo
<ibc@aliax.net>;