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SONET/SDH OC48/STM16 Enhanced IQ (IQE) PIC with SFP

Software release

  • Junos OS Release 10.4R2 and later (Type 3)


  • Four OC48/STM16 ports

  • Clear channel functionality

  • SONET and SDH is configured on a per-port granularity

  • Power requirement: 1.06 A @ 48 V (51 W)

  • Weight: 1.6 lb (0.725 kg)

  • Model number: PC-4OC48-STM16-IQE-SFP

Hardware features

  • Ports are numbered:

    • Top row: 0 and 1 from left to right

    • Bottom row: 2 and 3 from left to right

  • Maximum transmission units (MTUs) of up to 9192 bytes

Software features

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

  • Fine-grained egress queuing per logical interface. See the Junos OS Class of Service User Guide for Routing Devices for more information about class-of-service features

  • Packet buffering

  • Local line and remote payload loopback testing

  • Optical diagnostics and monitoring

  • Clocking options: internal or external/loop mode. Each OC48 transmitter port is configured either in internal or external mode. The default clocking option is internal mode.

  • Encapsulations:

    • Extended Frame Relay for circuit cross-connect (CCC) and translational cross-connect (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

    • Point-to-Point Protocol (PPP)

    • PPP for CCC

    • PPP for TCC

Cables and connectors


You can use the Hardware Compatibility Tool to find information about the pluggable transceivers supported on your Juniper Networks device.

The list of supported transceivers for the MX Series is located at;=All&pf;=MX+Series.


To extend the life of the laser, when a PIC is not being actively used with any valid links, take the PIC offline until you are ready to establish a link to another device. For information about taking a PIC offline, see the request chassis pic offline command in the CLI Explorer.


OK LED, one tricolor:

  • Off—PIC is offline and safe to remove from the router

  • Green—PIC is operating normally

  • Yellow—PIC is initializing

  • Red—PIC has an error or failure

APP LED, one green per port:

  • Off—Service is not running

  • Green—Service is running under acceptable load

Port LEDs, 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

SONET alarms:

  • Loss of light (LOL)

  • Phase lock loop (PLL)

  • Loss of frame (LOF)

  • Loss of signal (LOS)

  • Severely errored frame (SEF)

  • Alarm indicator signal—line (AIS-L)

  • Alarm indicator signal—path (AIS-P)

  • Loss of pointer (LOP)

  • Bit error rate—signal degrade (BERR-SD)

  • Bit error rate—signal fail (BERR-SF)

  • Remote defect indicator—line (RDI-L)

  • Remote defect indicator—path (RDI-P)

  • Remote error indicator (REI)

  • Unequipped (UNEQ)

  • Payload label mismatch—path (PLM-P)

SDH alarms:

  • Loss of light (LOL)

  • Phase lock loop (PLL)

  • Loss of frame (LOF)

  • Loss of signal (LOS)

  • Severely errored frame (SEF)

  • Multiplex-section alarm indicator signal (MS-AIS)

  • H Path alarm indicator signal (HP-AIS)

  • Loss of pointer (LOP)

  • Bit error rate—signal degrade (BERR-SD)

  • Bit error rate—signal fail (BERR-SF)

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

  • High order path—far end receive failure (HP-FERF)

  • Remote error indicator (REI)

  • Unequipped (UNEQ)

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

Optical diagnostics related alarms:


Transceivers from some vendors do not support these fields.

  • Temperature high/low alarms and warnings

  • Supply voltage high/low alarms and warnings

  • Tx bias current high/low alarms and warnings

  • Tx output power high/low alarms and warnings

  • Rx received power high/low alarms and warnings