Re: [rtcweb] DTMF resolution proposal

On Mon, Mar 7, 2016 at 1:23 PM, Jean-Marc Valin <jmvalin@mozilla.com> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> 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 https://www.ietf.org/mailman/listinfo/rtcweb
> >
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v2
>
> iQEcBAEBCAAGBQJW3fE5AAoJEJ6/8sItn9q9KDgH/j4bSutkSjUmvt6aTtt26qF6
> FKF2JMkrZc8pjSg6IDTq9MJradJr8WSzr27VSpedWOHHPFf5z4jDn6IpVVMyTUtP
> Jj6MvAPTyf9uB7UGq8rfA9y6az9OjChsJZ3j2/yPk7i/bnVYObg0OXOItyPA2+kA
> 7KCJAIWUiIBdfifKV8W1qre5DbUVi4iXnGIzbQ5KJIpxrO3Cxrq+vlPy7Gznc1a1
> o4B50DU6p3nBILGgCXpFwAMW5PBfco/oAOzCH90gqcM8hzEROW50LTJED/OP0K/b
> S3LMG3M+BriuAaslwW/Tj0qm3VUqtFpKaE3I0zjlxUbvfsxg/JYju2ebGSslZ7I=
> =dpJA
> -----END PGP SIGNATURE-----
>