################
Extra components
################

*****
G.729
*****

.. attention:: G.729 codec is offered by default for outgoing external calls. If you
   don't install it using following instructions, it must be removed from pjsip.conf
   configuration file. Otherwise, application servers will be offering a not available codec.

.. important:: In some countries, you might have to pay royalty fees in order to
   use G.729 codec to their patent holders. We're not legal advisers regarding
   active or withdrawn world patents.

You can use G.729 with IvozProvider, but installation must be done manually.
G.729 codec is optimized for each CPU type and version of asterisk, so each
installation may require a different codec module.

You can download codec from `here <http://asterisk.hosting.lv/>`_ under the
section Asterisk 18.

Once downloaded, move the `.so` file to **/usr/lib/asterisk/modules/** and rename
it to **codec_g729.so**

You can check the codec is valid by loading the module in asterisk and printing the
available codec translations using:

.. code-block:: console

    asterisk -rx 'module load codec_g729.so'
    asterisk -rx 'core show translation' | grep 729