IOP and IOA Module Specifications
4-port ATM UNI OC-3c/STM-1 IOP Module
Beta Draft Confidential
CBX 500 Multiservice WAN Switch Hardware Installation Guide 4/5/03A-29
Port Alarm Indicators
LEDs: Yellow, Red
Figure A-6 on page A-30 shows the OC-3c/STM-1 IOP and IOA modules.
LED State Status
Yellow ON Downstream equipment sees loss of signal
Red BLINKING Downstream equipment failure
Red ON Loss of signal
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