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Channelized OC3/STM1 Enhanced IQ (IQE) PIC with SFP (M7i Router)


Software release

  • Junos 10.2 and later (Type 1)


  • Two OC3 or STM1 ports

  • SONET or SDH is configurable on a per-port granularity

  • SONET channelization:

    • 2 OC3 channels

    • 6 DS3 channels

    • 168 DS1 channels

    • 1011 DS0 channels

  • SDH channelization:

    • 2 STM1 channels (non-concatenated)

    • 6 E3 channels

    • 126 E1 channels

    • 1011 DS0 channels

  • Power requirement: 0.56 A @ 48 V (27.1 W)

Hardware features

  • Ports are numbered 1 and 0 top to bottom

Software features

  • Dynamic, arbitrary channel configuration

  • Quality of service (QoS) per channel: weighted round-robin (WRR), random early detection (RED), weighted random early detection (WRED)

  • Enhanced fine-grained queuing per logical interface. See the JUNOS Class of Service Configuration Guide for more information about class of service 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 line, remote line, and remote payload loopback testing

  • Simple Network Management Protocol (SNMP): OC3 MIB, DS3 MIB, T1 MIB

  • Full bit error rate test (BERT)

    Note: BERT is not applicable for SONET/SDH channels.

  • Encapsulations:

    • Circuit cross-connect (CCC)

    • Translational cross-connect (TCC)

    • Extended Frame Relay for CCC and TCC

    • Flexible Frame Relay

    • Frame Relay

    • Frame Relay for CCC

    • Frame Relay for TCC

    • Frame Relay port CCC

    • High-Level Data Link Control (HDLC)

    • HDLC framing for CCC

    • HDLC framing for TCC

    • MPLS CCC

    • MPLS TCC

    • Multilink Frame Relay (MLFR) UNI NNI (MFR FRF.16)

    • Point-to-Point Protocol (PPP)

    • PPP for CCC

    • PPP for TCC

  • Encapsulations available only for DS1:

    • Multilink Frame Relay end-to-end (MLFR FRF.15)

    • Multilink PPP (MLPPP)

    • PPP over Frame Relay

Cables and connectors

  • Duplex LC/PC connector (Rx and Tx)


    • Multimode (model number: SFP-OC3-SR)

    • Intermediate Reach (IR-1) (model number: SFP-OC3-IR)

    • Long reach (LR-1) (model number: SFP-OC3-LR)

    Optical interface support—See SONET/SDH OC3/STM1 Optical Interface Specifications


One tricolor Status LED 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

SONET alarms:

  • 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)

  • Loss of clock (LOC)

  • Loss of frame (LOF)

  • Loss of light (LOL)

  • Loss of pointer (LOP)

  • Loss of signal (LOS)

  • Payload label mismatch (PLM-P)

  • Remote defect indication—line (RDI-L)

  • Remote defect indication—path (RDI-P)

  • Remote error indication (REI)

  • Payload unequipped (unequipped STS at path level) (UNEQ-P)

  • Virtual container—alarm indication signal (VAIS)

  • Virtual container—loss of clock (VLOC)

  • Virtual container—loss of pointer (VLOP)

  • Virtual container—mismatch (VMIS)

  • Virtual container—remote defect indication (VRD1)

  • Virtual container—unequipped (VUNEQ)


SDH alarms:

  • Administrative unit alarm indication signal (AU-AIS)

  • Bit error rate signal degrade (BERR-SD)

  • Bit error rate signal fail (BERR-SF)

  • Bit interleaved parity (BIP) error B1, B2, B3

  • Higher order path—alarm indication signal (HP-AIS)

  • Higher order path—far-end receiver error (HP-FERF)

  • Higher order path—payload label mismatch (HP-PLM)

  • Higher order path—loss of pointer (HP-LOP)

  • Higher order path—remote defect indication (HP-RDI)

  • Higher order path—unequipped (HP-UNEQ)

  • Loss of clock (LOC)

  • Loss of frame (LOF)

  • Loss of light (LOL)

  • Loss of signal (LOS)

  • Multiplex section—alarm indication signal (MS-AIS)

  • Multiplex section—far-end receive error (MS-FERF)

  • Multiplex section—remote defect indication (MS-RDI)

  • Multiplex section—remote error indication (MS-REI)

  • Phase lock loop (PLL)

  • Remote error indication (REI)

  • Severely errored frame (SEF)

  • Tributary unit—alarm indication signal (TU-AIS)

  • Tributary unit—loss of clock (TU-LOC)

  • Tributary unit—loss of pointer (TU-LOP)

  • Tributary unit—mismatch (TU-MIS)

  • Tributary unit—remote defect indication (TU-RD1)

  • Tributary unit—unequipped (TU-UNEQ)

  • DS1 alarms:

    • Alarm indication signal (AIS)

    • Loss of frame (LOF)

    • Remote alarm indication signal (RAIS)

  • DS1 error detection:

    • Bursty errored seconds (BES)

    • CRC errors

    • Errored seconds (ES)

    • Line errored seconds (LES)

    • Loss of framing seconds (LOFS)

    • Loss of signal seconds (LOS)

    • Severely errored seconds (SES)

    • Severely errored framing seconds (SEFS)

    • Unavailable seconds (UAS)

  • DS3 alarms:

    • Alarm indication signal (AIS)

    • Loss of frame (LOF)

    • Loss of signal (LOS)

    • Phase lock loop (PLL)

  • DS3 error detection:

    • C-bit code violations (CCV)

    • C-bit errored seconds (CES)

    • C-bit severely errored framing seconds (CEFS)

    • CRC errors

    • Excessive zeros (EXZ)

    • Far-end block error (FEBE)

    • Far-end receive failure (FERF)

    • Line errored seconds (LES)

    • Parity bit (P-bit) code violations (PCV)

    • Parity bit (P-bit) errored seconds (PES)

    • Parity bit (P-bit) severely errored framing seconds (PSES)

    • Severely errored framing seconds (SEFS)

    • Unavailable seconds (UAS)