Re: [codec] #5: Mention DTMF in requirements

["codec issue tracker" <[e-mail]>]

#5: Mention DTMF in requirements
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 Reporter:  hoene@…                 |       Owner:     
     Type:  defect                  |      Status:  new
 Priority:  major                   |   Milestone:     
Component:  requirements            |     Version:     
 Severity:  Active WG Document      |    Keywords:     
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Comment(by hoene@…):

 No consensus until now.
 I see do opinions on the mailing list:

 a) I think DTMF should be ignored entirely as far as requirements.  If
 someone wishes to perform tests, they are welcome to do so and present
 results, but there is no need to require anything.
 There are many different machine-to-machine communications systems that
 have been designed to operate over channels that also carry audio.  We
 should not attempt to support any of them.  The only purpose of this codec
 should be to carry sounds to a human ear.

 b) DTMF support is important to ensure interoperability and reliable
 operation. Thus, the codec SHOULD support the transmission DTMF at most
 transmission conditions. The DTMF transmission performance MUST be tested
 and characterized.

 Thus, I suggest to pause the decision until we found a volunteer that
 provides a DTMF testing environment.

 PS:
 It is common consensus that FAX NEED NOT to be support or tested.

-- 
Ticket URL: <http://trac.tools.ietf.org/wg/codec/trac/ticket/5#comment:2>
codec <http://tools.ietf.org/codec/>