Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Navigation
Guide That Contains This Content
[+] Expand All
[-] Collapse All

    E1/T1 Circuit Emulation PIC (M40e Router)

    Image g002614.gif

    Software release

    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)
    • Pseudowire emulation edge-to-edge (PWE3) for ATM (RFC 4717) (Junos OS Release 9.6 and later)
    • ATM Pseudowire emulation edge-to-edge via dynamic labels (LDP, RSVP-TE) (Junos OS Release 9.6 and later)
    • Inverse mulitplexing (IMA) for ATM (Junos OS Release 10.0 and later)
    • Simple Network Management Protocol (SNMP): ATM MIB for the Junos OS Release 10.2 and later
    • ATM QoS for the Junos OS Release 10.2 and later:
      • Per-virtual circuit (VC) and per-virtual path (VP) traffic shaping
      • Unspecified bit rate (UBR) traffic shaping
      • Fine-grained real-time variable bit rate (rtVBR) and real-time variable bit rate (nrtVBR) traffic shaping
      • Port-level egress shaping
      • Constant bit rate (CBR)
      • Policing on a per virtual circuit basis
      • Independent peak cell rate (PCR) and sustained cell rate (SCR) policing
      • Counting, tagging, or discard policing actions

    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)

    Published: 2010-10-28