Technical Documentation

Channelized E1 PIC (M40e Router)

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Software release

  • Junos OS Release 5.4 and later


  • Ten E1 ports
  • Power requirement: 0.15 A/48 V @ 7.2 W
  • Supports up to 24 NxDS0 channels per port
  • Data Service Unit (DSU) functionality

Hardware features

  • Ports configurable as clear channel E1 interfaces with 2.048-Mbps connectivity
  • Rate limiting on input and output
  • Packet buffering, Layer 2 parsing

Software features

  • Four data-link connection identifiers (DLCIs) per logical customer channel
  • Unframed E1 G.703 and G.704 framing modes
  • HDB3 line coding
  • CRC4 configurable
  • Per-packet counts and byte counts
  • Local and remote loopback testing
  • Encapsulations:
    • High-Level Data Link Control (HDLC)
    • Frame Relay
    • Circuit cross-connect (CCC)
    • Translational cross-connect (TCC)
    • Point-to-Point Protocol (PPP)

Cables and connectors

  • 128-ohm RJ-48C


One bicolor per 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)

Published: 2010-08-14

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