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

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
>>
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> 
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