Which of the following is a supported legacy voice mail integration method with Cisco CME 3.0?

Which of the following is a supported legacy voice mail integration method with Cisco CME 3.0?

A.
DTMF using ATA ports.

B.
DTMF using FXS ports.

C.
SMDI integration using VG248.

D.
SCCP integration using DPA 7910.