Avaya Contact Center – Extended Capacity supports G.729 and G.729b codecs to handle voice signals on contact center calls. G.729b is a superset of G.729 that activates silence suppression to save network bandwidth when no voice activity is detected on a call.

You can configure codec settings on the Network Locations page of Configuration Server. For more information about network configuration, see the network configuration section in Administering Avaya Contact Center – Extended Capacity.