Solution for warning Asked to transmit frame type ulaw, while native formats is (g729) read/write = ulaw/ulaw

Once a user made a call and Asterisk began to display a lot of warnings, and there was also no sound:

WARNING[948][C-000000c7]: chan_sip.c:7296 sip_write: Asked to transmit frame type ulaw, while native formats is (g729) read/write = ulaw/ulaw

I looked at the installed codecs and it turned out that it was not installed:

asterisk -rvv
core show translation
exit

Since the problem needed to be solved urgently, I did not install the codec, but simply commented it out so that it would not be used:

nano /etc/asterisk/users.conf
[ukrtelecom1]
...
disallow=all
allow=alaw
allow=ulaw
;allow=g729
...

Rebooted asterisk to apply the changes:

service asterisk restart

After that, the problem was resolved.

See my other articles about Asterisk

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