The g729 codecs are the most popular codes for VoIP particularly when using a VoIP trunk for a distance calling and you don’t have enough bandwidth to make a crystal clear and high definition audio call.
I will be showing you for the simple way to install the g729 code as free for you Asterisk box but before we proceed please take a note for the following.
for the complete tutorial with screen please visit the following url
Step by Step Tutorial for Installing g729 codec in pass-thru mode
Courtesy:
Expert Voice
Dubai UAE