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120-ohm RJ-48CCables and connectors
One bicolor per E1 port:
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Off—Port not enabled
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Green—Physical E1 link is up; individual subchannels can be down
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Red—Physical E1 link is down
LEDs
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Alarm indication signal (AIS)
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Loss of frame (LOF)
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Out of frame (OOF)
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Failed signal rate (FSR)
Alarms, errors, and
events
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Layer 2 per-queue and per-channel packet and byte countersInstrumentation
(counters)
36 ■ Channelized E1 IQ PIC
M120 Internet Router PIC Guide