350-801 · Question #315
350-801 Question #315: Real Exam Question with Answer & Explanation
The correct answer is B: accept unsolicited notification. To resolve issues with Cisco UCM not receiving MWI SIP notify messages from Cisco Unity Connection, the SIP trunk must be configured to accept these types of incoming messages.
Question
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.)
Options
- Atransmit security status
- Baccept unsolicited notification
- Callow charging header
- Daccept out-of-band notification
- Eaccept out-of-dialog refer
Explanation
To resolve issues with Cisco UCM not receiving MWI SIP notify messages from Cisco Unity Connection, the SIP trunk must be configured to accept these types of incoming messages.
Common mistakes.
- A. "Transmit security status" is related to sending security information from UCM, not receiving MWI notifications.
- C. "Allow charging header" relates to billing information and is irrelevant to MWI functionality.
- D. MWI uses in-band SIP NOTIFY messages; "accept out-of-band notification" refers to other signaling mechanisms, not standard SIP MWI.
Concept tested. Cisco UCM SIP trunk MWI configuration
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