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E3 EOL PIC (M7i Router)


Two Ports

Four Ports

Software release

  • PE-2E3: Junos OS Release 6.0 and later

    (End-of-life, see notification PSN-2010-02-648)

  • PE-4E3: Junos OS Release 6.0 and later

    (End-of-life, see notification PSN-2003-10-018)


  • Two or 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

  • Yellow—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