You are the network administrator for pass4usre.com .Your company installed a Cisco Unified CallManager cluster and a Cisco Unity voice mail platform. Users complain that the red MWI light never comes on, even when there are new voice-mail messages in the voice mailboxes. What should you do to resolve the problem? (Choose two.)

A.
Using the Port Usage tool to verify that the ports dedicated to MWI on/off are not over-utilized.
Add another dedicated port if the current port is over-utilized

B.
Confirm the MWI on/off numbers are unique within the Cisco Unified CallManager cluster dial plan.

C.
Ensure that the number of ports licensed is greater than than the number of configured ports

D.
Confirm the same numbers are being used for MWI on/off in both the Cisco Unified Cal l Manager cluster and Cisco Unity server.