Interfaces - Lucent Technologies LambdaXtreme Alarm Messages And Trouble Clearing Manual

Office Alarm Interface

Interfaces

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Overview
CR/Prompt, MJ/Prompt,
MN/Deferred Alarms
Contact Closures
CR/Prompt, MJ/Prompt,
and MN/Deferred Fail Safe
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365-575-783R1.1
Issue 1, June 2002
™
LambdaXtreme Transport provides the capability to export Office
Alarm indicators to a central office location. This interface is located
on the SIO circuit pack.
There is a set of contact closures for CR/Prompt, MJ/Deferred, and
MN alarms, for both audible and visual alarms. When multiple
conditions with two or more different alarm attributes are active, only
the highest level alarm with be active (both audible and visual). When
the highest severity alarm has been cleared, the next highest alarm, if
any, will be activated (both audible and visual).
Alarm relays are in a closed state when the corresponding alarms are
activated, and are open when the alarm is cleared.
The CR/Prompt and MN/Deferred alarm relays have normally closed
contacts so that in the event of a total power failure to the controller
shelf, the relays will open and result in dual local office alarms.
The MN alarm relay has normally open contacts.
Lucent Technologies - Proprietary
See notice on first page
Alarms and Indicators
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