Which protocol does the Cisco Unified ICM use to interface with the Cisco Unified Communications Manager in the Cisco Unified Contact Center Enterprise solution?

Which protocol does the Cisco Unified ICM use to interface with the Cisco Unified Communications Manager in the Cisco Unified Contact Center Enterprise solution?

A.
AXL

B.
SIP

C.
H.323

D.
JTAPI

E.
SOAP