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E3 PIC (M320 Router)

Image g001384.gif

Software release

  • JUNOS 6.3 and later (Type 1)


  • Four E3 ports
  • Power requirement: 0.47 A @ 48 V (22.5 W)
  • Integrated DSU interoperability

Hardware features

  • High-density E3 (34.368-Mbps) connectivity
  • High-performance throughput on each port at speeds up to 34.368 Mbps, full duplex
  • Scrambling support
  • Subrate clocking support
  • Rate policing on input
  • Rate shaping on output
  • Packet buffering, Layer 2 parsing
  • Large MTUs, up to 9192 bytes
  • Local and remote loopback

Software features

  • Supports G-751 framing
  • E3 diagnostics and loopback control
  • E3 alarm and event counting and detection
  • DS3 diagnostics and loopback control
  • Bit error rate test (BERT); you can configure one port in BERT mode and configure the remaining channels to transmit and receive normal traffic
  • Encapsulations:
    • High-level Data Link Control (HDLC)
    • Frame Relay
    • Multiprotocol Label Switching (MPLS) circuit cross-connect (CCC)
    • Point-to-Point Protocol (PPP)

Cables and connectors

  • Custom 10 ft (3.05 m) posilock to BNC male cable, separate RX and TX


One tricolor per port:

  • Off—Not enabled
  • Green—Online with no alarms or failures
  • Amber—Online with alarms for remote failures
  • Red—Active with a local alarm; router has detected a failure

Alarms, errors, and events

  • Alarm indication signal (AIS)
  • Equipment failure (does not affect service)
  • Frame error
  • Line code violation
  • Loss of signal (LOS)
  • Out of frame (OOF)
  • Yellow alarm bit (A-bit) disagreements

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