Panasonic KX-TVA594 Installation Manual page 140

5.3 KX-TDA and KX-TAW Series PBX Programming for Inband Integration
b)
Program the PBX so that unanswered calls to the operator are redirected to the VPS
(Intercept Routing No Answer feature).
1)
2)
3)
140 Installation Manual
Go to the "Extension-Wired Extension-Extension Settings" screen.
Assign "Intercept Destination Day/Night/Lunch/Break" for the operator's extension
to a floating extension number (VPS Port).
Click "Apply" to save the changed data.