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Channelized OC3 IQ PIC (M320 Router)

Image g002197.gif

Software release

  • JUNOS 7.1 and later (Type 1)


  • One OC3 port
  • Power requirement: 0.39 A @ 48 V (18.6 W)
  • Fine-grained queuing per logical interface
  • Channelization: DS3, DS1, DS0

Hardware features

  • Subrate and scrambling:
    • Digital Link/Quick Eagle
    • Kentrox
    • Larscom
    • ADTRAN
    • Verilink
  • Packet buffering, Layer 2 parsing
  • M13/C-bit parity encoding
  • DS3 far-end alarm and control (FEAC) channel support
  • Local and remote loopback testing

Software features

  • Quality of service (QoS) per channel: weighted round-robin (WRR), random early detection (RED), weighted random early detection (WRED)
  • Simple Network Management Protocol (SNMP): OC3 MIB, DS3 MIB, T1 MIB
  • Dynamic, arbitrary channel configuration
  • Full bit error rate test (BERT)
  • Encapsulations:
    • Circuit cross-connect (CCC)
    • Translational cross-connect (TCC)
    • Frame Relay
    • High-Level Data Link Control (HDLC)
    • Point-to-Point Protocol (PPP)

Cables and connectors

  • Duplex SC/PC connector (Rx and Tx); single-mode fiber intermediate-reach fiber


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—line (AIS-L)
  • Alarm indication signal—path (AIS-P)
  • Bit error rate signal degrade (BERR-SD)
  • Bit error rate signal fail (BERR-SF)
  • Idle code, idle received
  • Loss of frame (LOF)
  • Loss of pointer (LOP-P)
  • Loss of signal (LOS)
  • Out of frame (OOF)
  • Payload mismatch (PLM-P)
  • Payload unequipped (unequipped STS at path level) (UNEQ-P)
  • Parity bit (P-bit) disagreements
  • Path parity error
  • Remote defect indication—line (RDI-L)
  • Remote defect indication—path (RDI-P)
  • Yellow alarm bit (X-bit) disagreements

Error detection:

  • Bit interleaved parity errors B1, B2, B3 (CV-S, CV-L, CV-P)
  • Errored seconds (ES-S, ES-L, ES-P)
  • Far-end bit errors, remote error indication—line (REI-L), far-end line coding violations (CV-LFE)
  • Far-end bit errors, remote error indication—path (REI-P), far-end path coding violations (CV-PFE)
  • Far-end block error (FEBE)
  • Far-end errored seconds (ES-LFE, ES-PFE)
  • Far-end severely errored seconds (SES-LFE, SES-PFE)
  • Far-end unavailable seconds (UAS-LFE, UAS-PFE)
  • Frame error
  • Severely errored frames (SEF)
  • Severely errored framing seconds (SEFS-S)
  • Severely errored seconds (SES-S, SES-L, SES-P)
  • Unavailable seconds (UAS-L, UAS-P)

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