To set (for both extension and CO line)
PT/SLT/PS
While hearing a busy tone
6
C.Tone
Enter 6 .
To answer the callback ringing from an idle extension
PT/SLT/PS
While hearing a callback ringing
R.B.Tone
Off-hook.
To answer the callback ringing from an idle CO line
PT/SLT/PS
While hearing a callback ringing
Off-hook.
•
If you do not answer the callback ringing within 10 seconds, this feature will be
canceled.
Automatic Callback Busy Cancel
PT/SLT/PS
Off-hook.
On-hook.
Talk.
outside
phone no.
Dial outside
phone number .
4
6
C.Tone
Enter
46 .
Talk.
On-hook.
1.2 Making Calls
User Manual
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