Which two SCCP call signaling messages are initiated by Cisco Unified Communications Manager to an IP phone? (Choose two.)
A. SoftKeyEvent
B. CloseReceiveChannelAck
C. CallState
D. KeypadButton
E. OpenReceiveChannel
F. Offhook
Which two SCCP call signaling messages are initiated by Cisco Unified Communications Manager to an IP phone? (Choose two
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Which two SCCP call signaling messages are initiated by Cisco Unified Communications Manager to an IP phone? (Choose two
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