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EI/T1 Circuit Emulation PIC (M40e Router)

Image g002614.gif

Software release

  • JUNOS 9.3 and later

Description

  • Configurable as either twelve E1 ports or twelve T1 ports

    Note: Mixing E1 and T1 ports on the same PIC is not supported.

  • Power requirement: 0.52 A @ 48 V (25 W)
  • Onboard DSU functionality for E1 connectivity

Hardware features

  • Maximum transmission units (MTUs) of up to 1024 bytes
  • Per-interface diagnostics and loopback control
  • Per-interface alarm and event counting and detection
  • Framing
    • 4-bit CRC for G.704 framed mode
    • G.704 without CRC4
    • Unframed
  • Balanced and unbalanced modes
  • Full bit error rate test (BERT)

Software features

  • PIC can be configured as twelve T1 ports or twelve E1 ports
  • Local and remote loopback diagnostics
  • E1 ports
    • High-performance throughput on each port at speeds up to 2048 Mbps, full duplex
    • HDB3 line encoding
    • Integrated support for G.704 framed mode with CRC; this feature is user-configurable

      Note: The G.704 implementation supports speeds slower than 2.048 Mbps; multiple channels within a single E1 interface are not supported.

    • G.704 framed without CRC4
    • Unframed
    • Framed clear channel mode
    • Unframed clear channel mode
    • Framed fractional mode
  • T1 ports
    • High-performance throughput on each port at speeds up to 1544 Mbps, full duplex
    • AMI and B8ZS line encoding
    • Framed clear channel mode
    • Fractional mode
    • Superframe (D4/SF) and extended superframe (ESF) framing
    • ESF CSU counters, WRT impairments, and CRC checking
    • Local DS1 line loopback, remote line loopback
  • Loop timing, PIC line timing, and external timing
  • Encapsulations: Structure-agnostic time-division multiplexing (TDM) over packet (SAToP) (RFC 4553)

Cables and connectors

  • RJ-21 connector
  • Cables are rated for intra-building connections only.

LEDs

OK or Status LED, one tricolor:

  • Off—PIC is offline and it is safe to remove it from the router.
  • Green—PIC is operating normally.
  • Yellow—PIC is initializing.
  • Red—PIC has an error or failure.

APP LED, one bicolor:

  • Off—Monitoring application is not running.
  • Green—Monitoring application is running under acceptable load.

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

Structure-agnostic alarms for T1:

  • Alarm indication signal (AIS)
  • Loss of signal (LOS)
  • Errored seconds (ES)
  • Line code violation (LCV)
  • Line errored seconds (LES)
  • Severely errored seconds (SES)
  • Unavailable seconds (UAS)

Structure-agnostic alarms for E1:

  • Alarm indication signal (AIS)
  • Errored seconds (ES)
  • Line code violation (LCV)
  • Line errored seconds (LES)
  • Severely errored seconds (SES)
  • Unavailable seconds (UAS)

Structure aware alarms for E1:

  • Alarm indication signal (AIS)
  • Loss of frame (LOF)
  • Loss of signal (LOS)
  • Yellow alarm (remote alarm indication (RAI) (YLW)
  • Far-end block error (FEBE)
  • Cylical Redundancy Check (CRC)
  • CRC major
  • CRC minor
  • Line code violation (LCV)
  • Path code violation (LCV)
  • Errored seconds (ES)
  • Bursty errored seconds (BES)
  • Line errored seconds (LES)
  • Severely errored seconds (SES)
  • Severely errored frame seconds (SEFS)
  • Unavailable seconds (UAS)

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