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Multiservice Switch 7400 Hardware Installation, Maintenance, and Upgrade 6.1S2
Chapter 10
Alarm hardware installation
Install alarm hardware on Nortel Networks Multiservice Switch equipment to
monitor hardware-related alarms raised by the device, or by an external alarm.
• “Prerequisites to alarm hardware installation” (page 91)
• “Alarm hardware installation task flow” (page 91)
Prerequisites to alarm hardware installation
• Multiservice Switch 7460 shelves must not be daisy-chained for the
external alarm connection that is labeled Alarm 1.
Alarm hardware installation task flow
This task flow shows you the sequence of procedures you do to install alarm
hardware. To link to any procedure, go to
“Task flow navigation” (page 93).
CAUTION
Risk of disabling alarm system
If you have inserted a switch between the alarm cable
and your alarm system to isolate your alarm system from
the Multiservice Switch alarm connector during repairs,
set the alarm switch to ON when repairs are complete.
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