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Channelized E1 IQ EOL PIC (M320 Router)


Software release

  • Junos OS Release 6.2 and later


  • Ten E1 ports

  • Power requirement: 0.15 A @ 48 V (7.2 W)

  • Fine-grained queuing per logical interface

  • Channelization: E1, DS0

Hardware features

  • Data service unit (DSU) functionality

  • Ports configurable as clear channel E1 interfaces with 2.048-Mbps connectivity

  • Supports unframed E1 G.703 and G.704 framing modes

  • Supports HDB3 line coding

  • CRC4 configurable

  • Local and remote loopback testing

Software features

  • Quality of service (QoS) per channel: weighted round-robin (WRR), random early detection (RED), weighted random early detection (WRED)

  • Simple Network Management Protocol (SNMP): E1 MIB, DS0 MIB

  • Dynamic, arbitrary channel configuration

  • Full bit error rate test (BERT)

  • Encapsulations:

    • Circuit cross-connect (CCC)

    • Translational cross-connect (TCC)

    • Frame Relay

    • High-Level Data Link Control (HDLC)

    • Point-to-Point Protocol (PPP)

Cables and connectors

  • 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

Alarms, errors, and events

  • Alarm indication signal (AIS)

  • Loss of frame (LOF)

  • Out of frame (OOF)

  • Failed signal rate (FSR)

Instrumentation (counters)

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