Status Leds Of A Bip Alarm Module - Nortel Passport 15000 Hardware Description

346 Chapter 7 Using status indicator LEDs and sounds

Status LEDs of a BIP alarm module

241-1501-200 5.2S2
3 the CP, because although its failure triggered an automatic switchover of
the spare CP to become active and all other FP traffic continues to be
processed on that cage, losing a CP while there is no backup causes
serious service degradation but the switch continues to handle existing
traffic
4 the FP, because reduced capacity is less important than maintaining the
backups that impact greater portions of the switch or its service
performance
The BIP alarm module has LEDs on its faceplate to indicate the status of the
one or both Passport 15000 or 20000 switches, which includes:
• a red and a green for itself
• pairs of minor, major, and critical LEDs, one set above the other (under
the LED Test button), indicating the severity of the problem for either the
upper or the lower switch
• ten LEDs (under the ACO button) acting as one large follow-me indicator
See the figure "Location of the alarm module status LEDs" (page 348). To
clearly observe which LEDs are lit and their color, you must stand directly in
front of the faceplate. Unlike the other parts of a switch that have one LED
per color, each LED of the alarm module cluster shows one of the three status
colors. The colors are green, amber, and red.
In a startup mode after installation and powering up, the LEDs cycle from
solid red to solid green.
When the BIP is powered from an MFA150 system of ac rectifiers and at least
one of the rectifiers fails or is switched off, the test LEDs indicate amber if at
least one CP is connected.
After normal operation when a lit LED is not green, do "What to do when a
lit red LED is detected" (page 344) or "What to do when a lit amber LED is
detected" (page 345).