Which SIP request type is used by Cisco Unity Connection to inform Cisco Unified Communications manager that the Message Waiting Indicator must be turned on or off for a specific line?
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A. B. C. D.A.
The SIP request type used by Cisco Unity Connection to inform Cisco Unified Communications Manager (CUCM) that the Message Waiting Indicator (MWI) must be turned on or off for a specific line is the NOTIFY request.
The MWI feature is used to notify users of new voicemail messages waiting for them. When a new message is left in a user's mailbox, Cisco Unity Connection sends a NOTIFY message to CUCM, which in turn sends a notification to the user's phone to turn on the MWI.
The NOTIFY request is a SIP message used to notify a user agent (in this case, CUCM) of a particular event that has occurred on the server (in this case, a new voicemail message). The NOTIFY message contains information about the event, such as the event type and the server's URI.
The UPDATE request is used to modify an existing session, while the SUBSCRIBE request is used to request notifications of events from another user agent. The PUBLISH request is used to publish information to another user agent.
Therefore, the correct answer to the question is A. NOTIFY.