Ninety-eight users share an E1 connection to the PSTN in your IP telephony service. They all require voice mail. Which three hardware components can be used? (Choose three.)

A.
2821 Integrated Services Router

B.
3725 Router

C.
NM-CUE-EC

D.
AIM-CUE

E.
AIM-VOICE with VWIC2-1MFT-T1/E1

F.
NM-2V with VWIC-MFT-E1