Panasonic KX-TDA30 User Manual page 223

Problem
I want to distinguish the tones.
The MESSAGE button light lit.
An SDN button on my extension does not work.
Remedy
•
( To distinguish the ringing tones for each
CO, ICD Group, PDN, SDN, or INTERCOM but-
ton (Digital proprietary telephone only),
3.1.3 Customising the Buttons)
•
Another extension left you a message wait-
ing indication while you were on the phone or
away from your desk.
•
A PDN button is not assigned on the exten-
sion corresponding to your SDN button.
Create a PDN button on the desired exten-
sion. ( 3.1.3 Customising the Buttons)
4.1.1 Troubleshooting
User Manual 223