Panasonic KX-TVM50 Installation Manual page 100

4.2 KX-TDA Series PBX Programming for DPT Integration
c)
Set the amount of time before a call is considered "unanswered" and therefore forwarded to
the VPS (Intercept Routing No Answer timer).
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2)
3)
100 Installation Manual
Go to the "System-Timers & Counters-CO / Extension" screen.
Assign "Intercept Timer" parameter.
Click "Apply" to save the changed data.