I have a CallManager 4.2(3) with h323 gateway. When I call from IP Phone through h323 gateway to PSTN, the codec is g729 I dont have configure any region only the default which use g711.
But when I call backwards from PSTN>h323gateway>IP phone the codec is g711 which is correct.
The IP Phones are on the LAN so I dont need to use the codec g729.
How can I force the calls from IP PHONE>H323GATEWAY>PSTN to use codec g711??