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Channelized E1/T1 Enhanced IQ (IQE) PIC (M7i Router)


Software release

  • Junos OS Release 10.2 and later (Type 1)


  • Ten E1 or T1 ports

  • DS1 and E1 interfaces are selectable on a per-port granularity

  • E1 channelization per PIC:

    • 10 E1 channels

    • 310 DS0 channels

  • T1 channelization per PIC:

    • 10 T1 channels

    • 240 DS0 channels

  • Power requirement: 0.52 A @ 48 V (24.73 W)

  • Model number: PB-10CHE1-T1-IQE-RJ48

Hardware features

  • Top row: 1, 3, 5, 7, and 9 from left to right

  • Bottom row: 0, 2, 4, 6, and 8 from left to right

Software features

  • 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 Class of Service Feature Guide for Routing Devices and EX9200 Switches for more information about class of service features.

  • Support sending and receiving in-band loopback codes in both framed and unframed mode:

    • Framed in-band loopback at CSU

    • Framed in-band loopback at Smartjack (ANSI)

    • Unframed in-band loopback at CSU

    • Unframed in-band loopback at Smartjack (ANSI)

  • You can configure the following framing modes using the CLI:

    • T1—SF (D4/superframe), ESF (extended superframe)

    • E1—G704, G704–no-crc4, unframed

  • Packet buffering, Layer 2 parsing

  • Local line, remote line, and remote payload loopback testing; each channel can be looped individually and independently of other channels (DS1/E1 channels)

  • Simple Network Management Protocol (SNMP): T1 MIB (RFC 1406)

  • Dynamic, arbitrary channel configuration

  • Full bit error rate test (BERT)

  • Clocking: internal and loop (clock recovered from network and use for transmit). Internal timing is the default for channelized T1 ports. The external master clock can be a multiple of 2.048 MHz or 1.544 MHz for E1 or T1 operation.

  • Line coding:

    • T1—CLI configurable as AMI or B8ZS

    • E1—HDB3

  • 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

    • Point-to-Point Protocol (PPP)

    • PPP for CCC

    • PPP for TCC

  • Encapsulations available only for DS0 and DS1:

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

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

    • Multilink PPP (MLPPP)

  • Encapsulations available only for DS1:

    • PPP over Frame Relay

Cables and connectors

  • 120-ohm RJ-48C connector (female)


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

  • DS1 alarms:

    • Alarm indication signal (AIS)

    • Loss of frame (LOF)

    • Remote alarm indication signal (RAIS)

    • 24-hour alarm reporting history maintained for error statistics and failure counts, 15-minute intervals on all errors

  • 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 (LOSS)

    • Severely errored seconds (SES)

    • Severely errored framing seconds (SEFS)

    • Unavailable seconds (UAS)

Instrumentation (counters)

  • Layer 2 per-queue and per-channel packet and byte counters

  • Layer 2 per-queue and per-channel packet and byte drop counters