M120 Internet Router PIC Guide

Cables and connectors

LEDs

Alarms, errors, and events

Instrumentation (counters)

120-ohm RJ-48C

One bicolor per E1 port:

Off—Port not enabled

Green—Physical E1 link is up; individual subchannels can be down

Red—Physical E1 link is down

Alarm indication signal (AIS)

Loss of frame (LOF)

Out of frame (OOF)

Failed signal rate (FSR)

Layer 2 per-queue and per-channel packet and byte counters

36Channelized E1 IQ PIC

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Juniper Networks manual M120 Internet Router PIC Guide