Routing Calls from the IMS Core

The calls coming from the core will have the Oracle Communications Session Border Controller’s Contact-URI (which is sent in the REGISTER request) as the Request-URI. The Oracle Communications Session Border Controller looks for a registration entry that corresponds to this URI. After finding the registration entry and the corresponding surrogate agent, the Oracle Communications Session Border Controller looks for the routing mechanism it should use to route this INVITE to the IP-PBX. It uses the customer-next-hop configuration parameter to determine if it routes this call to the session agent, the session agent group, or directly to a particular IP address.