Comtech EF Data CRS-311, Installation And Operation Manual

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CRS-311 1:1 Redundancy Switch Revision 7
Modem, RMI/TMI, and Switch Configuration MN/CRS311.IOM
4–19
If the CDM ‐ Qx/QxL configuration includes Carrier ‐ in ‐ Carrier
®
this holdoff time
should be no less than 8 seconds.
Follow these steps to set the
Backup Holdoff Period
:
Step Task
1 Go to the CONFIG Æ HOLDOFFS menu.
2 Change the BACKUP HOLDOFF to any number in the range of 1 to 99 seconds.
4.6.1.2.2 Set Restore Holdoff Period
The " Restore Holdoff " setting, which is also programmable from 1 to 99 seconds, determines
the ability of the Switch to automatically put the backed up Traffic Modem online again if its
fault clears.
Normally, the failed Traffic Modem taken offline remains offline indefinitely. If the fault clears,
traffic will be returned to the unit (in Auto mode) only if the Redundant Modem fails.
Follow these steps to set the
Restore Holdoff Period
:
Step Task
1 Go to the CONFIG
Æ
HOLDOFFS menu.
2 Change the RESTORE HOLDOFF to any number in the range of 1 to 99 seconds.
4.6.1.3 Set Alarm Masking
Another way to adjust the Switch's reaction in Auto mode is to mask modem faults. You may
disable modem Rx, Tx or both fault types so that the Switch does not react to them. This
masking prevents the Switch from taking automatic action and prevents the logging of the faults
in the stored events list. These masks are global to all the modems attached to the Switch.
Follow these steps to set
Alarm Masks
:
Step Task
1
Go to CONFIG
Æ
MASKS
Æ
MODEM ALARMS .
2
Set the mask parameters as desired.