Cisco 400-051 Exam

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: Option A. B.

This message indicates which soft key was pressed. Upon receipt of this message, CallManager invokes the action associated with the pressed soft key. For example, if Hold was the pressed soft key, CallManager places the active call on user hold. In some trace files you might see a soft key number without the corresponding description. The following list defines each soft key number.

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