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Which SIP request is used by Cisco Unified Communications Manager to signal DND status changes to a Cisco 9971 IP Phone?

Posted: Sat Jul 23, 2022 6:59 pm
by answerhappygod
Which SIP request is used by Cisco Unified Communications Manager to signal DND status changes to a Cisco 9971 IP Phone?

A. OPTIONS
B. NOTIFY
C. INFO
D. REFER
E. UPDATE