Operation Manual

Configuring ISDN Interfaces 105
of the thresholds is reached, the interface is barred for incoming
and outgoing calls until the bar is removed. For the initial phase,
you may take the given default values. For more information
and an explanation of how the default values have been calcu-
lated, refer to Chapter 18, section "ISDN Connection Monitor".
Later, to find out the appropriate threshold values for your
situation, watch the number of ISDN call set-ups, the physical
up-time and the charge units accruing daily for three or four
weeks. The threshold values then should be slightly higher than
the average to allow for deviations at peak times.
To view or modify the thresholds, press <Enter> on the parame-
ter to display the following window:
Important
Figure 6-5:
Thresholds Configuration
To avoid unnecessary charges, you should adapt the defaults on all
ISDN interfaces to your situation.
10a. Physical Up-Time Threshold .
Default: 40 min
Enter the Physical Up-Time Threshold in hours, minutes
and seconds.
10b. Outgoing Calls Threshold .
Default: 200
Enter the Outgoing Calls Threshold.
10c. Chargings Threshold .
Default: 200
Enter the Chargings Threshold.
11. Check the Time Restrictions .
Press <Enter> on this parameter to display the following win-
dow: