IOP and IOA Module Specifications
3-port Channelized Inverse Multiplexing over ATM (IMA) Module
Beta Draft Confidential
A-484/5/03 CBX 500 Multiservice WAN Switch Hardware Installation Guide
Link Performance Monitoring
• DS3 MIB (RFC 1407) near-end statistics collection
• User-configurable thresholds for DS3 performance parameters
Module LED Status
Port Alarm Status
Figure A-10 shows the 3-port Channelized DS3/1 IMA IOP and IOA modules.
Table A-16. Module LED Status Indicators
LED State Status
Good LED lit Normal operation
Failed LED lit Module failure
Redundant LED lit Redundant module online
GoodandFailedLEDs
blinking simultaneously
Operating system software image currently being
downloaded from active switch processor (SP)
Table A-17. Port Alarm Status Indicators
LED State Status
Yellow LED lit Downstream equipment sees loss of signal (LOS)
resulting in a remote alarm identification (RAI)
Red LED lit Loss of framing (LOF) or LOS
Red LED blinking Downstream equipment failure resulting in an
alarm indication signal (AIS)
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