To prevent media flow from unnecessarily crossing the WAN to a central Communication Manager media resource, you must enable the Initial IP-IP Direct Media parameter in Avaya Aura® Communication Manager. This must be done in all IP Office branch deployments with Centralized users. Enabling this parameter is especially important for the following types of calls:
Calls between Centralized users within the branch
Calls between Centralized users and local IP Office trunks
