You are working with a customer to deploy a pilot network to test how Cisco CallManager interoperates with SIP. Which two components need to be deployed for Cisco CallManager to interoperate with the SIP portion of the network? (Choose two.)

A.
Registrar server

B.
SIP trunk

C.
SIP to H.323 trunk

D.
Redirect server

E.
Proxy server

F.
Location database