[asterisk-users] problem with asterisk - calls where both sides cannot hear each other

[Eric "ManxPower" Wieling]

>> Cisco PIX501 devices, The call center in India is running 5 agents using
>> PolyCom phones, and we're using G729 to save bandwith. And yes, we
>> purchused 5 licenses of G729 codec.

What firmware version on the Polycoms?