Which of the following is provided by the Cisco CallManager Express? (Choose all that apply.)

A.
A head-end Enterprises PBX voice solution in IOS.

B.
An enterprise class traditional PBX system.

C.
Integrated Call Processing in IOS providing Key System and Hybrid Feature Set functionality for < 120 station market.

D.
A cost effective IP telephony solution for a small business supported across all Cisco (two)

E.
All of the above.