Re: [rtcweb] Requiring ICE for RTC calls

Saúl Ibarra Corretgé <> Tue, 27 September 2011 07:32 UTC

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From: Saúl Ibarra Corretgé <>
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Date: Tue, 27 Sep 2011 09:34:52 +0200
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To: Bernard Aboba <>
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Subject: Re: [rtcweb] Requiring ICE for RTC calls
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On Sep 27, 2011, at 5:44 AM, Bernard Aboba wrote:

> > And "interoperability with SIP-PSTN providers" is only relevant if you
> > are trying to turn the browser into another phone. We have enough
> > phones. What we don't have are new real-time communication experiences
> > that can only be created within this environment.
> [BA] I think you may be on to something here.  POTS lines are dropping so rapidly
> that wireline service won't even exist in some countries within a few years.  While
> PSTN interop may have been a key scenario in the early days of SIP, I have serious
> doubts as to how much attention we should pay to this in RTCWEB.  Ability to
> make a call to an E.164 number?  Probably.  Support for every potential corner
> case?  Not necessarily. 

PSTN gateways are one example of non-ICE capable devices (usually) as of today. But it's not the only one. None of the hardware SIP phones I've used support ICE, so we'd have trouble when talking to them.

I do agree that requiring ICE is a good idea, but I don't think the currently deployed infrastructures are ready for it today. Maybe ICE support will improve across vendors and it'll be more widely adopted if RTCweb mandates it, we'll see :-)

Saúl Ibarra Corretgé
AG Projects