[Asterisk-Dev] IAX codec negociation (again...)

Goldenear goldenear at free.fr
Mon Jun 20 06:35:55 MST 2005

I'm not a programmer, but I begin to know pretty well asterisk 
internals. Moreover, I didn't say it IS easy, I just said it COULD be ;) 
When I see how codec négociation works with sip/ser, I just guess it 
could be as easy with * :)

I'm wondering, couldn't * ask both sides of a call their codecs 
capabilities before "bridging" them and so force them to use  the same 
codec if there is a common one ?

Also, I've done some test using IAXcomm:

user A (alaw/ulaw/gsm - gsm as prefered codec)
user B (ulaw only)
user A (IAXcomm softphone) calls user B using its IP address (direct 
connection by dialing, not using any * server)

In this way, it works :) A switch from gsm to ulaw during the call.
So, I wonder why having asterisk in the path would break codecs nogociation.

Kevin P. Fleming a écrit :

> Goldenear wrote:
>> I'm not a programmer, but I guess this problem could be solved very 
>> easily. This would make asterisk better and could save many cpu and 
>> bandwidth :)
> Uhh.. no, the solution is not 'very easy'. Given that you say you are 
> not a programmer, why would you think so? If the solution was 'very 
> easy', it would already have been done by now :-)
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