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Re: [rtcweb] Identity and PSTN gateways

Harald Alvestrand <harald@alvestrand.no> Tue, 03 April 2012 13:48 UTC

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Date: Tue, 03 Apr 2012 15:50:43 +0200
From: Harald Alvestrand <harald@alvestrand.no>
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To: Iñaki Baz Castillo <ibc@aliax.net>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Identity and PSTN gateways
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On 04/03/2012 03:31 PM, Iñaki Baz Castillo wrote:
> 2012/4/3 Harald Alvestrand<harald@alvestrand.no>:
>> Thus - if you call a telephone number via a gateway, you would perform a
>> DTLS key exchange with the gateway
> A super gateway like in in this figure:
>
>    http://public.aliax.net/WebRTC/WebRTC_SIP_Interop_DTLS-EKT-SRTP.png
>
> Taking into account that SIP-PSTN gateways into most of the SIP PSTN
> providers don't support SRTP or ICE, how long will take the scenario
> you mean to become real and widely adopted/implemented? IMHO 10 years.
>
Real: 1 year.

Widely adopted: Just in time to see the PSTN shut down because nobody 
uses it any more :-)

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