Spectracom Corporation
Model 9289
NetClock/NTP Network Time Provider Instruction Manual
7-11
Figure 7-7: System Modem Dial Out Screen (1 of 2)
To help prevent a loss of time synchronization condition from occurring, the call interval should
be configured for a value of less than the holdover period. This will prevent the holdover period
from expiring (which will cause loss of Time Sync) because the modem was configured to dial-
out after the holdover expired. For example, if the holdover period is set for two weeks, the call
interval should be set to dial-out less than every two weeks. Otherwise, holdover will expire
before the modem is scheduled for a dial-out and time synchronization will be lost.
Boot:
This
field specifies how long the modem software will wait after being powered up to check the
unit’s time synchronization status. If this time expires and the unit has not achieved time
synchronization yet, the modem software will automatically dial out with the current settings at
that time. Note that changes to this timer’s settings will not change the timeout of the current
countdown if it has already begun (e.g. If the timer is set to 1 hour and then rebooted, the unit
will countdown to 1 hour at power up. Changing the timer’s settings to 30 minutes will not affect
the current countdown. The new 30 minutes value will only be used if another power cycle
occurred). To skip the initial countdown, use the Dialout Now feature on the Modem
Configuration screen.
Summary of Contents for 9289
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