Information about existing customer communications and collaboration solutions is an important element to define the proper value of the proposed Cisco Collaboration Architecture. Which two pieces of information about the existing infrastructure will you need to uncover? (Choose two.)
A.
existing network infrastructure vendors
B.
existing unified communications system
C.
existing video or conferencing solution or both
D.
departments that are involved in the existing communications system
E.
type of information that is exchanged between suppliers and customer