I am trying to route my calls through an outside IAX provider. I am having a problem with which codec to use. The only way I have successfully been able to make an outgoing call is if i do:
disallow=all
allow=g729
in the sip.conf file (for my phones) and the iax.conf file. The second I add one more codec to that list, for instance:
disallow=all
allow=g729
allow=ulaw
I get the following error in the CLI:
Nov 23 10:56:35 NOTICE[3799]: channel.c:1703 ast_set_write_format: Unable to find a path from ulaw to g729
Nov 23 10:56:35 NOTICE[3799]: channel.c:1736 ast_set_read_format: Unable to find a path from g729 to ulaw
During this time, the number I am calling rings, however, when I pick up, the server hangs up and says this:
-- IAX2/plainvoip/3 is ringing
-- IAX2/plainvoip/3 stopped sounds
-- IAX2/plainvoip/3 answered SIP/4035-0e93
Nov 23 10:56:41 WARNING[3799]: channel.c:2127 ast_channel_make_compatible: No path to translate from SIP/4035-0e93(4) to IAX2/plainvoip/3(256)
Nov 23 10:56:41 WARNING[3799]: app_dial.c:1024 dial_exec: Had to drop call because I couldn't make SIP/4035-0e93 compatible with IAX2/plainvoip/3
-- Hungup 'IAX2/plainvoip/3'
== Spawn extension (from-sip, 13102801234, 1) exited non-zero on 'sip/4035-0e93'
I will post my configuration files if necessary. I need more codecs than just g729 because I can’t make calls to other extensions (due to an inability to negociate a codec). Thank you in advance for any help that anyone can offer.