Re: [codec] #5: Mention in requirements, FAX?

Agreed. In-band fax carriage should not be in the scope of the codec, and
the automated switchover to mechanisms like T.38 should also be outside the
scope of our work.

Mike

On 4/2/10 7:33 AM, "Marc Petit-Huguenin" <petithug@acm.org> wrote:

> On 04/02/2010 07:21 AM, Christian Hoene wrote:
>> Hi guys,
>> 
>> just for the notes. Testing Fax (http://en.wikipedia.org/wiki/Fax#History) is
>> definitely out of scope?
> 
> And V8bis? V.21? V.25? V.32/V32bis?  V.18?  SS5?
> 
> All this stuff should be out of scope and the text should say that terminals
> that needs this MUST do it out of band, so no tests are needed.
> 
>> 
>> Christian
>> 
>> ---------------------------------------------------------------
>> Dr.-Ing. Christian Hoene
>> Interactive Communication Systems (ICS), University of Tübingen
>> Sand 13, 72076 Tübingen, Germany, Phone +49 7071 2970532
>> http://www.net.uni-tuebingen.de/
>> 
>> 
>>> -----Original Message-----
>>> From: codec-bounces@ietf.org [mailto:codec-bounces@ietf.org] On Behalf Of
>>> Brian West
>>> Sent: Friday, April 02, 2010 4:10 PM
>>> To: stephen botzko
>>> Cc: codec@ietf.org
>>> Subject: Re: [codec] #5: Mention DTMF in requirements
>>> 
>>> But Codecs themselves do not detect DTMF.  Thats the job of the DTMF
>>> detector.  NOT the codec.  In all
>>> my work with codecs I have not once seen one that knows anything about DTMF.
>>> And if the codec is too
>>> lossy inband is out of the question.
>>> 
>>> /b
>>> 
>>> On Apr 2, 2010, at 9:01 AM, stephen botzko wrote:
>>> 
>>>> I heard no decision as to DTMF tone encoding.
>>>> 
>>>> As far as I am concerned, the question of whether the codec MUST encode
>>>> DTMF tones accurately enough
>>> to be detected at the decoder output (or SHOULD or non-requirement) is still
>>> open.
>>>> 
>>>> That question clearly is in-scope, and has nothing to do with signaling.
>>>> 
>>>> Stephen Botzko
>>> 
>>> _______________________________________________
>>> codec mailing list
>>> codec@ietf.org
>>> https://www.ietf.org/mailman/listinfo/codec
>> 
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> 