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Desired Feature
Operation
To set
While hearing a busy tone
To call
If you hear callback ringing
Automatic
Callback Busy
When the Dialed Extension is Busy/No Answer
Receiver
Sender
To leave a notification
To cancel a notification
To call back
To clear all notifications
Message
Waiting
receiver's extension no.
– 3 –
Call Waiting
Set
Cancel
For outside calls
Set
Cancel
For intercom calls
Receiver
Sender
While hearing a busy tone
Wait for an answer.
To talk to the new party
Terminating a current status
While hearing the Call Waiting tone
Holding a current status