Which three features does Cisco Unified Border Element provide when Cisco Unified CCE and Cisco Unified Customer Voice Portal are used? (Choose three.)
A . Silent Monitor inbound voice calls
B . secure communication using flow around mode
C . NAT for address hiding
D . normalize SIP messages using SIP profiles
E . record calls by forking the media using build-in-bridge
F . demarcation point between networks
Answer: CDF