Re: [rtcweb] My Opinion: Why I think a negotiating protocol is a Good Thing

Wolfgang Beck <wolfgang.beck01@googlemail.com> Wed, 19 October 2011 05:21 UTC

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Date: Wed, 19 Oct 2011 07:21:27 +0200
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From: Wolfgang Beck <wolfgang.beck01@googlemail.com>
To: Cullen Jennings <fluffy@cisco.com>
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Subject: Re: [rtcweb] My Opinion: Why I think a negotiating protocol is a Good Thing
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On Tue, Oct 18, 2011 at 11:13 PM, Cullen Jennings <fluffy@cisco.com>; wrote:
>
> On Oct 18, 2011, at 11:29 , Wolfgang Beck wrote:
>
>> Depressingly few SIP providers do interconnection, after all those
>> years.
>
> Interesting - most the people I seem to deal with need to send SIP from one domain to another. Who are you thinking of that does not need to do
> interconnect?
There is a need that people with an account at provider A can call
people at provider B. I have several SIP accounts with various
providers and I don't know for sure which one would be usable for
communicating with you. It's not like email.

What I see is SIP providers that use the PSTN for interconnection. We
might see a lot more SIP interconnection with LTE and VoLTE, which
will
look very much like the PSTN. RCS ('Rich Communication Suite')
standardized presence, chat and file transfer for some years. When it
came to interconnection, providers could only agree on the least
common denominator, RCS-e. Even in the PSTN you lose many features
with interconnection.


Wolfgang Beck