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
Answer: AB
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