Alarm Card Front Panel - General DataComm OCM-2000 Installation & Operation Manual

Alarm Card

Alarm Card Front Panel

Table 7-2 shows the Alarm Card front panel and explains the function of each switch and indicator.
You can check the operation of each unit by monitoring the front panel indicators. The colors of the
LED indicators on the modules front panels are consistent in function:
• Red and yellow are used for alarms or "service-affecting" conditions. This includes test
modes that are interfering with normal user data.
• Alarm conditions depend on the modules, but normally, red indicates a Major Alarm (a
number of problems), and yellow indicates a Minor Alarm (channel alarms).
• The green LED indicators are used for all other conditions, including data activity and
E&M signaling leads.
Table 7-2
Alarm Card Front Panel
Front Panel
ON
AUDIBLE
MIN MAJ
AUDIBLE
ACO
ENBL
DSBL
RESET
ALARM 1
7-4
Item Description
On Green LED is on when power is supplied to the Alarm Card.
Audible Green LED is on when front panel ACO switch is on.
Min Yellow LED is on when a minor alarm is active.
Maj Red LED is on when a major alarm is active.
Audible ACO Three-position switch has the following functions:
ENBL - Permanently on. Major or minor alarms do not activate the
audible alarm.
DSBL - Permanently off. All major or minor alarms do activate the
audible alarm.
RESET - Momentary on. The first alarm does not activate the alarm
relay. When the first alarm is deactivated, the ACO circuit is reset to
ACO ìOFF,î allowing the next alarm to activate the audible alarm relay.
Office Connunications Manager OCM-1000/OCM-2000
Installation & Operation
036R340-000
Issue 16