Which type of gateway would be required?

You are CCNA VOICE associate in Certkey.com.Your company is migrating from a traditional PBX to a Cisco Unified Communications system. During migration process you need to provide common channel signaling connectivity to the PBX from the Cisco Unified Communications system. Which type of gateway would be required?

A.
voice gateway

B.
digital trunk gateway

C.
analog trunk gateway

D.
digital station gateway