A.When Expressway Core works with VMN clusters, Expressway Core decides which VMN is used for signaling/media connection.

B.Cloud-registered devices choose a VMN cluster based on the lowest STUN round trip delay.

C.The cascading traffic between VMN must bypass the firewall.

D.When Cisco Unified Communications Manager works with multiple VMNs, Cisco Unified CM decides which VMN is used for signaling connection.

E.A VMN can terminate a media connection while operating in maintenance mode.