Re: [AVTCORE] draft-ietf-avtcore-multi-party-rtt-mix Issue 1: transport

Bernard Aboba <bernard.aboba@gmail.com> Mon, 18 May 2020 15:25 UTC

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From: Bernard Aboba <bernard.aboba@gmail.com>
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Date: Mon, 18 May 2020 08:24:46 -0700
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References: <46CB285F-C49A-4910-B9B1-667AB1AE4538@brianrosen.net>
Cc: Gunnar Hellström <gunnar.hellstrom@ghaccess.se>, avt@ietf.org
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To: Brian Rosen <br@brianrosen.net>
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Subject: Re: [AVTCORE] draft-ietf-avtcore-multi-party-rtt-mix Issue 1: transport
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lOn May 18, 2020, at 8:09 AM, Brian Rosen <br@brianrosen.net> wrote:
> 
> It occurs to me that the SBC may not pass text/red.  Depends on how picky they are.  Text/red is basic T.140.

[BA] Legacy SBCs are indeed an issue, and a basic obstacle to deployment of RTT. I am not aware of any SIP trunk providers that support text/red, because they would need to upgrade their SBCs to do so, which would be a large cost, with no corresponding revenue source.