Which two SIP trunk settings resolve this issue?

An engineer configures a SIP trunk for MWI between a Cisco UCM cluster and Cisco Unity Connection. The Cisco UCM cluster fails to receive the SIP notify messages.

Which two SIP trunk settings resolve this issue? (Choose two.)
A . accept unsolicited notification
B. accept out-of-dialog refer
C. allow changing header
D. accept out-of-band notification
E. transmit security status

View Answer

Answer: AB