What two network components allow external video endpoints to enter Cisco Unified MeetingPlace video meetings? (Choose two.)
Select 2 response(s).

A.
Cisco Unified Communications Manager 4.X

B.
Cisco IOS voice gateway

C.
Cisco Unified Border Element

D.
Cisco Unified Videoconferencing 3545 H.323-to-H.323 Gateway

E.
MGCP voice gateway