[Asterisk-Users] select codec based on extension

[Simone Cittadini]

Leandro Rzezak ha scritto:

> I'm having same problem. Were you able to solve it?

No, codecs became a secondary problem later in our project so we ended 
up with 711 on all servers and more bandwidth,  anyway the post refers 
to asterisk 1.0.something and I never investigated the problem in more 
detail... I think it's possible, usually when you receive no answers (as 
the case of that post) you have made a really silly question :)

>
> On 10/18/05, *Simone Cittadini* <mymailforlists at gmail.com 
> <mailto:mymailforlists at gmail.com>> wrote:
>
>     I've the following installation :
>
>     |asterisk client| --- > |asterisk server| --- > |other asterisk
>     server|
>
>     all the connections are made in IAX, the client and first server
>     allows
>     711 and 729
>     the other server only allows 729 since it has low bandwidth at
>     disposal
>
>     all the numbers but a few are routed to a digium card in the first
>     server, the others are routed to the other server, this way :
>
>     [default]
>
>     exten => _123X.,1,Dial(IAX2/otherserver/${EXTEN})
>     exten => _123X.,2,Hangup
>
>     exten => _X.,1,Dial(Zap/g1/${EXTEN})
>     exten => _X.,2,Hangup
>
>     when I call 123456 from the client box ...
>
>     on the client :
>     Call accepted by asterisk server (format alaw)
>
>     on the server :
>     Call accepted by other asterisk server (format g729)
>
>     on the other server :
>     Called 123456 at something
>
>     and then on the server in the middle :
>     Oct 18 18:00:37 NOTICE[2846]: channel.c:1724 ast_set_write_format:
>     Unable to find a path from alaw to g729
>     Oct 18 18:00:37 NOTICE[2846]: channel.c:1757 ast_set_read_format:
>     Unable
>     to find a path from g729 to alaw
>
>     since that "something" at the end of the call and the paps which sits
>     before the first asterisk server both have g729, I don't like too
>     much
>     having to pay to translate something which need not translation.
>     Is there a clever combination of sip.conf, iax.conf and
>     extensions.conf
>     I'm missing to solve my problem ?
>     _______________________________________________
>