Registrar Routing

When the routing precedence parameter is set to registrar, the Oracle Communications Unified Session Manager is using the ENUM server as a resource within the context of its routing decisions.

When an INVITE arrives, the Oracle Communications Unified Session Manager issues an query to the ENUM server. If the query’s reply includes a match, the Oracle Communications Unified Session Manager proceeds by forwarding the message via the information in the reply.

Note that you can configure the Oracle Communications Unified Session Manager to fallback to a local policy lookup if the lookup via the registrar fails. Configure this by adding the fallback-to-localpolicy option to the sip-registrar configuration element.

For situations where the database routing decision needs to be done in lieu of the default, you can set routing precedence to local-policy. Note that you can configure a routing entry that points to an HSS by setting a policy attribute with a next-hop of enum:<server-name> within the local-policy.