[Asterisk-Users] G.729 variants and Asterisk

[Adam Hart]

Carlos Chavez wrote:

>     I see that I can purchase G.729 licenses for my Asterisk server, but I
>have seen that many phones support a G.729 variant like A or B.  Are these
>suppoted by the same G.729 codec in Asterisk?
>  
>
B is just the fixed point version of A (from memory) - so it works the 
same as A.

A is a reduced complexity version of G.729 - although they both work 
with each other. A is just slack when looking for the best 
representation of your voice.

FYI, Digium's codec is G.729A, although it makes little difference