[asterisk-dev] The Asterisk bug tracker :: please thinktwicebeforeopening a report!

[Brian Jones]

Why not?  How do you handle faxing from an IAD when handing off to
another SIP provider such as Level3?  ulaw passthrough should work under
these circumstances. In most cases, I would want 729 for voice calls,
but this breaks it for faxes.

Brian

> -----Original Message-----
> From: asterisk-dev-bounces at lists.digium.com 
> [mailto:asterisk-dev-bounces at lists.digium.com] On Behalf Of Wai Wu
> Sent: Wednesday, April 05, 2006 2:46 PM
> To: Asterisk Developers Mailing List
> Subject: RE: [asterisk-dev] The Asterisk bug tracker :: 
> please thinktwicebeforeopening a report!
> 
> I don't really think * should handle this. However, an option 
> in the dial command that allows you to specify a list of 
> codec would be helpful. 
> 
> -----Original Message-----
> From: asterisk-dev-bounces at lists.digium.com
> [mailto:asterisk-dev-bounces at lists.digium.com] On Behalf Of 
> Brian Jones
> Sent: Wednesday, April 05, 2006 2:46 PM
> To: Asterisk Developers Mailing List
> Subject: RE: [asterisk-dev] The Asterisk bug tracker :: 
> please thinktwicebefore opening a report!
> 
> I have a feature request, but I don't want to put it in bug 
> tracker unless someone here tells me it's OK.
> 
> I've already asked about this in #asterisk and on the forum, 
> but never received any help.  At least I don't believe this 
> is a -users question.
> 
> I would like a way to do transparant codec negotiation.  For 
> example, I have one peer (peer A) that supports both ulaw and 
> 729, and another peer (peer B) that only supports ulaw.  As 
> far as I can tell, there is no way to force peer A to setup a 
> call from peer B with ulaw instead of 729, since that is the 
> preferred codec for peer A.
> 
> What happens is this:
> 
> Call comes in from peer B and the SDP only offers ulaw.  
> Asterisk invites peer A, and offers both 729 and ulaw.  It 
> then reports a combined capability of ulaw, but then proceed 
> to try to bridge the calls and transcode to 729.  This then 
> fails, because I don't have 729 licensing on this particular 
> server (and don't need it, because I actually don't want to 
> transcode). At this point, instead of falling back to 711, 
> the call fails.
> 
> Would a way to either fall back to other codecs or a way to 
> force "transparent" codec negotiation be a legitimate feature 
> request for the bug tracker?
> 
> Thanks,
> Brian
> 
> ----------------------------
> Brian Jones
> Director, Technical Services
> http://www.kanchalra.com
> ----------------------------
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