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Multichannel DS3 PIC (M40e Router)

Image g001817.gif

Software release

  • JUNOS 5.2 and later


  • Two DS3 ports
  • Power requirement: 0.31 A @ 48 V (14.9 W)
  • Supports up to 128 logical customer channels per DS3 port

Hardware features

  • Support for NxT1 by interoperating with the Link Services and Multilink Services PICs, using MLPPP and MLFR protocols
  • Onboard DSU functionality

Software features

  • Support for four data-link connection identifiers (DLCIs) per logical customer channel
  • DS3 alarm and event counting
  • DS3 alarm and event detection
  • DS3 diagnostics and loopback control
  • DS3 framing: M13, C-bit
  • T1 framing: super frame (SF) and extended super frame (ESF)
  • Encapsulations:
    • High-Level Data Link Control (HDLC)
    • Frame Relay
    • Circuit cross-connect (CCC)
    • Point-to-Point Protocol (PPP)

Cables and connectors

  • Custom 10 ft/3.05 m posilock to BNC male cable, separate Rx and Tx


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

  • Far-end block error (FEBE)
  • Parity bit (P-bit) disagreements
  • Path priority error
  • Alarm indication signal (AIS)
  • Loss of signal (LOS)
  • Out of frame (OOF)
  • Yellow alarm
  • AIS received
  • Simultaneous BERT functionality
  • Idle received
  • Local and remote loopback

Related Topics

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