We are evaluating to buy the g729 codec from digium, but for test, we need to buy a few licenses (no problem with that, we buy 2 for each country).
Here is the situation,
6 countries each one with its own elastix server and cisco 7940 phones.
1 country acting as a central node; this means that each of the other 6 have an IAX trunk to this central PBX.
when a user wants to call from one country to another they first need to dial 8 that takes the call to the central PBX, from there they need to mark 2 for one country and then the extension, for example if one user from Miami wants to call a user in spain from miami he dial 8 (central PBX) 2 (internal country code) and 5600 (extension in spain).
All this is working but the audio quality is really poor.
the question is i just bought 2 license for each country for g729 but none for the central PBX, do i need to install licensed codecs there to? how many?
maybe this is not the best config but it is what it is.
Thank you very much for the help!!