Required Configuration

• Registration caching is enabled.
• For the realm from which registrations come, the options list must include sip-connect-pbx-reg; this is new configuration introduced to support this feature. The presence of this option instructs the Oracle® Enterprise Session Border Controller to skip matching the Contact header in the INVITE request with the registered Contact of the registration entry. The Oracle® Enterprise Session Border Controller finds a registration using only the INVITE’s source address.

  Alternatively, you can configure the sip-connect-pbx-reg option in the options list for a session agent. When the realm where an INVITE comes from does not have this option set, the Oracle® Enterprise Session Border Controller determines whether or not the INVITE came from a session agent. You might choose to configure session agents with this option if you do not want it applied to an entire realm. If the PBX is behind a NAT device, the session agent’s IP address for the PBX (if statically configured) must be the IP address of the NAT device. And if DNS is use, the session agent’s hostname must resolve to the NAT device’s IP address.