[Asterisk-Users] Most common CODEC

[Andrew Kohlsmith]

>      I am not trying to start a codec war or find out which is the best
> protocol.  What I need to know is when I buy a Grandstream phone, a Cisco
> phone, a Sippura adaptor or any other hard phone, what codec is usually
> supported by all of them.  All of them obviously support G.711 but that
> is not the best for use when connecting through the Internet.  Is it
> worthwhile to buy G.729 licenses for Asterisk, or is there another codec
> that is wildly supported buy most phones?

G.711 is more or less the universal protocol.  No, you have no bandwidth 
savings but if you're going for lowest-common-denominator, there it is.

Regards,
Andrew