Which of the following statements are true regarding calls to VoIP destinations across the WAN? (Choose all that apply)

A.
All IP phone addresses must be routed across WAN.

B.
Voice packets are addressed directly to the Cisco IOS router.

C.
Calls between IP phones are assigned a random UDP/RTP port.

D.
Signaling from local IP phones to an Cisco CME router use UDP/RTP port 2000.

E.
Calls between the IP phone and router voice port are handled the same as calls from one voice port to another voice port within the router.

Explanation:
Not D: Wrong.sccp is used for signalling.and udp/tcp ports used.