About Latching

Latching is when the Oracle Communications Session Border Controller listens for the first RTP packet from any source address/port for the destination address/port of the Oracle Communications Session Border Controller. The destination address/port is allocated dynamically and sent in the SDP. After it receives a RTP packet for that allocated destination address/port, the Oracle Communications Session Border Controller only allows subsequent RTP packets from that same source address/port for that particular Oracle Communications Session Border Controller destination address/port. Latching does not imply that the latched source address/port is used for the destination of the reverse direction RTP packet flow (it does not imply the Oracle Communications Session Border Controller will perform symmetric RTP).