Routing Using the TO Header

For the Oracle® Enterprise Session Border Controller’s global SIP configuration, you can enable the use of an ENUM query to return the SIP URI of the Registrar for a SIP REGISTER message. Without this feature enabled, the Oracle® Enterprise Session Border Controller uses the REQUEST URI. This ability can be helpful because REGISTER messages only have the domain in the REQUEST URI, whereas the SIP URI in the To header contains the user’s identity.

There are two parts to enabling this feature. First, you must enable the register-use-to-for-lp parameter in the global SIP configuration. Then you can set the next-hop in the applicable local policy attributes set to ENUM.

To enable your global SIP configuration for routing using the TO header:

1. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal
   ORACLE(configure)#

2. Type session-router and press Enter.

   ORACLE(configure)# session-router
   ORACLE(session-router)#

3. Type sip-config and press Enter. If you are adding this feature to a pre-existing SIP configuration, you will need to select and edit it.

   ORACLE(session-router)# sip-config
   ORACLE(sip-config)#

4. register-use-to-for-lp—Set this parameter to enabled if you want the Oracle® Enterprise Session Border Controller to use, for routing purposes, an ENUM query to return the SIP URI of the Registrar for a SIP REGISTER message. This parameters defaults to disabled.

   To set up your local policy attributes for routing using the TO header:

5. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal
   ORACLE(configure)#

6. Type session-router and press Enter.

   ORACLE(configure)# session-router
   ORACLE(session-router)#

7. Type local-policy and press Enter. If you are adding this feature to a pre-existing local policy configuration, you will need to select and edit your local policy.

   ORACLE(session-router)# local-policy
   ORACLE(local-policy)#

8. Type policy-attributes and press Enter. If you are adding this feature to a pre-existing local policy configuration, you will need to select and edit your local policy.

   ORACLE(local-policy))# policy-attributes
   ORACLE(policy-attributes)#

9. next-hop—This is the next signaling host. Set this parameter to ENUM if you want to use SIP methods in local policy attribute information for routing purposes.
10. Save and activate your configuration.