Using G729 codec on Asterisk 13 with FreePBX 13 (on a x64 modern kernel)

We started using FreePBX instead of Lync recently and after a while we ran into the following error:

WARNING[30830][C-00001548] channel.c: Unable to find a codec translation path: (slin) -> (g729)

Turns out that even though G729 is by default shown in the GUI of FreePBX it is not turned on by default since it requires a commercial license.

Since we use Unifi UVP end-points and Zoiper with the licencing for the codecs I went ahead and found some hints in the internet how to get this codec working on Asterisk so that there is translation towards the end-point. After finding a helpfull article I discovered that it was a bit out-dated as it lacked two crucial steps to get this working on FreePBX.

cd /usr/lib/asterisk/modules
chmod 755
chown asterisk:asterisk
/etc/init.d/asterisk restart
asterisk -rx "core show codecs"
asterisk -rx "core show translation"

Although the hints where good the last step was to change permissions on the file and also to change the owner and group. This allowed asterisk to start using the codec.


  1. I’m quite shocked that this is the only article I could find on the net on this topic, relating to FreePBX… In any case, I am eternally grateful to you as this was exactly the solution I needed. I’m just surprised that there isn’t more people battling with this issue? Surely the majority of people out there use the g729 codec?

  2. i love you. i was trying for hours to make my indound calls to work. and then i saw your post. now everything works fine. thank you :))))

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