ON
OFF
DISPLAY
SCHEDULE <hh:mm:ss>
This command allows you to schedule a one hour time slot during which the system will automatically transfer a resilient T1/E1 trunk back from the secondary controller to the primary controller. You issue this command on the primary controller. The T1/E1 trunk will only fail back if there are no calls on the trunk circuits. Therefore, you should schedule the failback to occur during a period of low traffic.
Note: Refer to the Resiliency Guide for instructions on how to install, configure, troubleshoot and maintain T1/E1 trunk resiliency.
ON qualifier enables programmed failback.
OFF qualifier disables programmed failback.
DISPLAY qualifier shows whether programmed failback is enabled or disabled and the failback start time.
SCHEDULE <hh:mm:ss> qualifier sets the programmed failback start time.
The trunk will only fail back if there are no active calls on the resilient T1/E1 trunk.
By default, Programmed Failback is disabled. If you do not enter a failback start time, the default failback start time is used. The default start time is 02:15:00 (2:15 AM).
If you specify a start time, you must enter it in 24-hour format. Enter a time that will correspond with a period of low call traffic (for example, after business hours)
This command only applies to the T1/E1 Combo MMC in the primary controller. If you have programmed one T1/E1 Combo card as the primary link and another T1/E1 Combo card in the same controller as a secondary link, the command information only applies to the card that functions as the primary link.
The Programmed Failback command is ignored if you enter it on the secondary controller.
The system checks call activity on the T1/E1 trunk approximately every minute for one hour starting from the programmed time that you entered. If a call is active on the T1/E1 trunk for the entire duration of the scheduled hour, the T1/E1 trunk will not fail back from the secondary. The primary system will generate a maintenance log to indicate that failback did not occur.
The DISPLAY qualifier shows the programmed failback time and the status (ON or OFF) of the feature.
You can also issue this command from the telnet maintenance terminal (port 23) of the secondary controller.
The following examples show how to display and set the programmed failback schedule:
System Response:
PROGRAMMED FAILBACK IS ON
PROGRAMMED FAILBACK SCHEDULE 10:00:00
System Response:
PROGRAMMED FAILBACK IS OFF
PROGRAMMED FAILBACK SCHEDULE 10:00:00
System Response:
PROGRAMMED FAILBACK IS OFF
PROGRAMMED FAILBACK SCHEDULE 13:00:00
System Response:
PROGRAMMED FAILBACK IS ON
PROGRAMMED FAILBACK SCHEDULE 13:00:00
