Which two statements about how PBX architectures compare to Cisco Unified Communications are
true? (Choose two.)

A.
A PBX offers increased security.

B.
Cisco Unified Communications decreases costs of MACs

C.
Cisco Unified Communications provides historical reporting, unlike traditional PBXs

D.
Cisco Unified Communications offers advanced, integrated applications such as presence and
integrated video.

E.
A PBX architecture offers advanced, integrated applications such as presence and integrated video