When I set the SIP_CODEC variable to force g729:
Jun 24 12:30:01 NOTICE[1226062640]: chan_sip.c:1313 sip_answer: Changing
codec to 'g729' for this call because of ${SIP_CODEC) variable
-- Attempting native bridge of SIP/8011-86fe and SIP/8008-c2b9
Jun 24 12:30:02 NOTICE[1234455344]: channel.c:1508 ast_set_read_format:
Unable to find a path from G729A to ULAW
Jun 24 12:30:02 NOTICE[1234455344]: channel.c:1478 ast_set_write_format:
Unable to find a path from ULAW to G729A
Jun 24 12:30:02 WARNING[1226062640]: chan_sip.c:1332 sip_write: Asked to
transmit frame type 256, while native formats is 4 (read/write = 4/4)
== Spawn extension (sip, 8041, 2) exited non-zero on 'SIP/8011-86fe'
-- Got SIP response 481 "Call Leg/Transaction Does Not Exist" back
from 217.117.xxx.xxx
Though I get a short 'hello' (voice) from the otherside, but after that
line dies.
Stefan
On Thu, 24 Jun 2004, Manuel Wenger wrote:
> >Try to configure in sip.conf your extensions context like this:
> >
> >[XXX]
> >....
> >disallow=all
> >allow=g729
> >....
>
>
> Done that already: but then, the "incoming channel" (from the user to Asterisk) is
> G729, and the "outgoing channel" (from Asterisk to the PSTN gateway) still remains
> ULAW, so Asterisk has to do transcoding (ULAW to G729), which I don't want,
> obviously.
>
> For some reason, the outgoing channel doesn't follow the setvar(SIP_CODEC=g729) rule.
>
> -Manuel
>
>
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