Panasonic KX-TDE100 User Manual page 47

1.2 Making Calls
To an Extension Refusing the Call (DND Override)
The preprogrammed extension can call someone who has set the DND feature.
PT/SLT/PS
extension no. 1
DND Tone R.B.Tone
Off-hook. Dial extension Enter 1. Talk.
number.
User Manual 47