1.2 Making Calls
User Manual 33

To set (for both extension and CO line)

To answer the callback ringing from an idle extension

To answer the callback ringing from an idle CO line

Automatic Callback Busy Cancel

•If you do not answer the callback ringing within 10 seconds, this feature will be canceled.
PT/SLT/PS
While hearing a busy tone
Enter
6
.
6
On-hook.
C.Tone
Off-hook.
PT/SLT/PS
Talk.

While hearing a callback ringing

R.B.Tone
Off-hook.
PT/SLT/PS
Talk.
Dial
outside
phone number
.
outside
phone no.

While hearing a callback ringing

Off-hook.
PT/SLT/PS
On-hook.
4 6
Enter
46
.
C.Tone