IOP and IOA Module Specifications
8-port Subrate Module
Beta Draft Confidential
CBX 500 Multiservice WAN Switch Hardware Installation Guide 4/5/03A-43
Port Alarm Indicators
Figure A-9 shows the 8-port Subrate DS3 FR/IP IOP and IOA modules.
Table A-15. Port Alarm Status Indicators
LED State Status
Yellow LED lit Downstream equipment sees loss of signal
resulting in a Remote Alarm Identification (RAI)
Red LED lit Loss of frame or signal
Red LED blinking Downstream equipment failure resulting in an
Alarm Indication Signal (AIS)
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