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
Answer: CE
Which two SCCP call signaling messages are sent by an IP phone to Cisco Unified
Communications Manager? (Choose two.)
A. SoftKeyEvent
B. OpenReceiveChannelAck
C. StartMediaTransmission
D. SelectSoftKeys
E. CloseReceiveChannel
F. StopTone
Answer: AB
