You are deploying a Cisco Unified Communications Manager solution with MGCP gateways at multiple locations. Which firewall and ACL configuration must you
perform to allow the MCGP gateways to function correctly?
A.
Allow access to TCP port 2428.
B.
Block TCP port 1720.
C.
Open access to all TCP and UDP ports.
D.
Allow access to TCP port 1720.
E.
Block access to TCP ports 2427 and 2428.