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Re: [rtcweb] #1: RFC 4734 citation

Harald Alvestrand <harald@alvestrand.no> Wed, 31 October 2012 15:23 UTC

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Date: Wed, 31 Oct 2012 16:23:28 +0100
From: Harald Alvestrand <harald@alvestrand.no>
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Subject: Re: [rtcweb] #1: RFC 4734 citation
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On 10/30/2012 02:06 PM, Iñaki Baz Castillo wrote:
> 2012/10/23 rtcweb issue tracker <trac+rtcweb@trac.tools.ietf.org>:
>>   Telephone Event - [RFC4734]
> Could somebody give some points about why DTMFs over media are
> required in WWW? Isn't DTMF mechanism OLD enough to incorporate it
> into WebRTC?
>
> Autoanswer: interoperability with legacy telephony world.
>
Autoanswer (and you should know this by heart now, it's been said so 
many times):

Use case 4.3.2 from draft-ietf-rtcweb-use-cases-and-requirements-09:

4.3.2.  Fedex Call

4.3.2.1.  Description

    Alice uses her web browser with a service something like Skype to be
    able to phone PSTN numbers.  Alice calls 1-800-gofedex.  Alice should
    be able to hear the initial prompts from the fedex IVR and when the
    IVR says press 1, there should be a way for Alice to navigate the
    IVR.

If you want to argue for having that use case deleted from the 
requirements, start a debate on that topic. If you have an alternative 
solution, state that in the positive as what should go into the -audio- 
draft instead of RFC 4734.

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