Software release

• Junos OS Release 9.3 and later

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 and PIC line 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 (Junos OS Release 10.2 and later)
• ATM QoS (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 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)