Panasonic KX-TVP200 Installation Manual page 68

3.3 CONNECTING THE VPS WITH PANASONIC KX-T SERIES PBXs
Screen output:
c)
Assignment of IRNA (Intercept Routing No Answer) timer:
1)
2)
3)
68 Installation Manual
Go to the "2-4 System Timer 1/2" screen.
Assign "Intercept Time" parameter.
Click "Apply" to save the changed data.
Note:
This parameter tells the KX-TD500 how long to let a call ring at an extension
before forwarding (redirecting).