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Re: [rtcweb] Minimal SDP negotiation mechanism

Christer Holmberg <christer.holmberg@ericsson.com> Tue, 20 September 2011 13:13 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "Olle E. Johansson" <oej@edvina.net>, Harald Alvestrand <harald@alvestrand.no>
Date: Tue, 20 Sep 2011 15:15:56 +0200
Thread-Topic: [rtcweb] Minimal SDP negotiation mechanism
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Minimal SDP negotiation mechanism
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Hi, 

>> Once we start requiring that the PeerConnection know the 
>> difference between "early" media and "late" media, it seems 
>> to me we're slipping down a slippery slope.
> 
>The difference between early and late media is purely a 
>billing decision in PSTN. I don't think we should separate 
>these on the rtcweb side. It's a PSTN gateway issue, not 
>something to be bothered with in rtcweb.

It's not about knowing the difference between "early" and "late" media - it's about whether the API and browser need to support multiple SIMULTANOUS SDP answers - or whether we assume that the JS SIP app will always, at any given time, only provide ONE SDP answer to the API and browser.

Regards,

Christer

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