Panasonic KX-TDA30 User Manual page 36

1.2 Making Calls
Monitoring Another Extension (Call Monitor)
The preprogrammed extension can monitor another extension.
To monitor
PT/SLT/PS
extension no.
Dial extension
number .
To an Extension Refusing the Call (DND Override)
The preprogrammed extension can call someone who has set the DND feature.
PT/SLT/PS
While hearing the DND tone
1
R.B.Tone
Enter 1 .
36 User Manual
5
B.Tone
Enter 5 .
Talk.