Restricted Latching

The Oracle Communications Session Border Controller restricts latching of RTP/RTCP media for all calls within a realm. It latches to media based on one of the following:

• SDP: the IP address and address range based on the received SDP c= connect address line in the offer and answer.
• Layer 3: the IP address and address range based on the received L3 IP address of the offer or answer. This option is for access registered HNT endpoints. If the L3 IP address is locally known and cached by the Oracle Communications Session Border Controller as the public SIP contact address, that information could be used instead of waiting for a response. The Oracle Communications Session Border Controller might use the L3 IP address restriction method for all calls regardless of whether the endpoint is behind a NAT or not, for the same realms.