Panasonic KX-TVM50 Installation Manual page 169

[Example Settings (3)]
Program the PBX to direct incoming trunk calls to an Incoming Call Distribution (ICD) group, and
to then direct those calls to the VPS when they are not answered.
a)
Program the PBX so that incoming trunk calls are directed to an ICD group (DIL feature).
1)
Go to the "CO & Incoming Call-DIL Table & Port Setting" screen.
2)
Assign "DIL Destination Day/Night/Lunch/Break" for each trunk to a specific
extension number (floating extension number of the ICD group).
3)
Click "Apply" to save the changed data.
5.3 KX-TDA Series PBX Programming for Inband Integration
Installation Manual 169