Re: [rtcweb] DTMF resolution proposal

Would the text be crafted so that it pertains *only* to the RFC4733 digit packets emitted by a browser?

Information about gap between retransmission of the final packet could be useful as well and I suggest 20ms for that one.

Thanks,
Tolga

From: rtcweb [mailto:rtcweb-bounces@ietf.org] On Behalf Of Ted Hardie
Sent: Monday, March 07, 2016 5:19 PM
To: Jean-Marc Valin <jmvalin@mozilla.com>
Cc: Cullen Jennings <fluffy@cisco.com>; rtcweb@ietf.org
Subject: Re: [rtcweb] DTMF resolution proposal

On Mon, Mar 7, 2016 at 1:23 PM, Jean-Marc Valin <jmvalin@mozilla.com<mailto:jmvalin@mozilla.com>> wrote:
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As proposed by Roman, I think we should also include the "minimum gap
of 30 ms". Otherwise, I support the proposal.

Thank you Jean-Marc; I had not thought to include that in my note, but I agree.
regards,
Ted

        Jean-Marc

On 03/07/2016 03:35 PM, Ted Hardie wrote:
> We've had about 60 or so messages on this topic, and the rough
> consensus seems to be align this document with the limits set out
> in the W3C work here:
>
> https://www.w3.org/TR/webrtc/#rtcdtmfsender
>
> However, there was also a proposal to slightly modify those limits.
>  They are currently:
>
> "The duration cannot be more than 6000 ms or less than 40 ms. The
> default duration is 100 ms for each tone."
>
> Based on Roman's note, a minimum of 40ms and a maximum 8000 ms to
> align with the ITU and RFC2833.
>
> To resolve this, I propose that we ask the WebRTC group to raise
> their max to 8000 and, on receiving a positive response, publish
> this document with 40/8000 as the min and max.  If they give a
> negative response, we retain 40/6000.  This values alignment
> between the two documents higher than the reference 2833, but that
> seems sensible in this context.
>
> If you have an objection to this way forward, please send your
> reasoning to the list by March 14th.
>
> thanks,
>
> Ted
>
>
>
> _______________________________________________ rtcweb mailing
> list rtcweb@ietf.org<mailto:rtcweb@ietf.org> https://www.ietf.org/mailman/listinfo/rtcweb
>
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