When using CUBE, which two statements describe how media flow-through differs from media flow-around? (Choose two.)
A.
Media flow-around provides address hiding by terminating both signaling and RTP streams.
B.
Media flow-through terminates the signaling channel and the RTP streams flow directly between endpoints.
C.
Media flow-around and media flow-through function in a similar manner, but media flow-around supports NAT traversal.
D.
Media flow-through terminates the RTP streams but allows signaling to flow directly between endpoints.
E.
Media flow-around terminates the signaling stream and allows RTP streams to flow directly between endpoints.
F.
Media flow-through provides address hiding by terminating both signaling and RTP streams.
Explanation:
Media flow through and media flow around mode is supported on the Cisco Unified Border Element (CUBE). The CUBE is always involved in the call setup (signaling) portion of the call, but the media (RTP bearer stream) may flow through the CUBE or be routed around the platform.Media flow around allows the CUBE greater scalability in the number of calls that can be processed by one CUBE router.
For Media flow through option, the media packets are passed through the CUBE, they will get terminated and re-originates with CUBEs IP address and port number, so here we cannot find the original gateways ip address. This is one of the security feature in the CUBE. The default option is media flow-through.