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Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Chapter Core Module Overview
BNM-155 LED Indicators
The BNM-155 LED indicators are described in Table2-3. All LEDs are located on the faceplate of the
front card.
Push Buttons
The BNM-155 has two push-buttons located on the faceplate of the front card.
•ACO
The ACO button is a momentary switch and is p ressed during a major or minor alarm to d eactivate
the audible alarm relays and to t urn th e ACO LED on. Any new alarm causes the re lay s t o be
reactivated.
•HIST
The HIST button is a mo mentary switch and is pr essed to extinguish the history LED if there is n o
active alarm at the time.
Table2-3 BNM-155 LED Indicators
Type of LED Color Meaning
ACT Green On indicates the card set is in act ive mode.
STBY Yellow On indicates the card set is in s ta nd by m o de .
FAIL Red On indicates the BNM-155 card set has failed or the line module is
missing.
PORT Green Green indicates the port is a ctive.
Yellow Yellow indicates a remote alarm on the por t.
Red •Red indicates a local alarm on th e p o rt .
•Off indicates the port has not been activated (brought up).
MIN Red On indicates a minor alarm in the node.
MAJ Red On indicates a major alarm in the node.
DC-A Green •On indicates “A” power is OK.
•Off indicates “A” power module is missing or present but at
0volts.
DC-B Green •On indicates “B” power is OK.
•Off indicates “B” power module is missing or present but at
0volts.
ACO Y ello w On indicate s the A CO (audi ble cut -of f) but ton has bee n presse d durin g
a major or minor alarm. This LE D is extinguished when the alarm is
cleared.
HIST Green ON indicates a major or minor alarm has occurred since the last ti me
the HIST button was pressed.