How to fix codec issue in asterisk?

Question

Asterisk

I inherited Cent OS 5))
Elastix is ​​spinning on it. So the idea came to update it
after the update, the sound for incoming and outgoing calls to short numbers disappeared ... I
call from a short number to external numbers, there is sound, I
call through X-lite to short internal ones, it says that the melon exchange 0
I look at the logs slips:

NOTICE[16859]: pbx_spool.c:427 attempt_thread: Call completed to Local/[email protected]
== Spawn extension (tc-maint, s, 7) exited non-zero on 'Local/[email protected] ;2'
Unknown RTP codec 126 received from '173.225.225.254:5461'

Help me to understand. Thanks

Answer 1

It's not about the codecs, but the features of X-Lite and Bria
Google, chtoli, from the first time there is a solution
https://forum.asterisk.ru/viewtopic.php?f=3&t=4686

Answer 2

In the sip.conf settings, try playing around with codecs. ulaw, gsm, etc. Another option is to check NAT and port forwarding.