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Optical telecommunication apparatus for use in an optical ring network

  • US 5,909,298 A
  • Filed: 02/24/1997
  • Issued: 06/01/1999
  • Est. Priority Date: 06/18/1996
  • Status: Expired due to Term
First Claim
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1. An optical telecommunication unit, comprising:

  • a shielded case having a front opening, said shielded case having a size such that two of said shielded cases can be accommodated with a vertical alignment in a standard open-rack frame having a height of about 2100 mm, a width of about 660 mm and a depth of about 305 mm;

    a rear panel closing a rear opening of said shielded case;

    an interconnection pattern provided on said rear panel;

    a plurality of plug-in connectors provided on said rear panel at an inner side thereof in electrical connection with said interconnection pattern;

    an optical telecommunication apparatus carrying a plurality of plug-in connectors, said optical telecommunication apparatuses being provided such on said rear panel such that said plug-in connectors of said optical telecommunication apparatus establish a removal engagement with corresponding plug-in connectors on said rear panel;

    a plurality of interface connectors provided on said rear panel, each of said interface connectors including a plurality of interconnection pins studded on said rear panel in electrical contact to said interconnection pattern and a protective shroud provided on an outer side of said rear panel so as to surround said interconnection pins, said interconnection pins extending outwardly from said rear panel in each of said interface connectors for accepting an external connector, said protective shroud being adapted for guiding said external connector for insertion to and removal away from said interface connector; and

    a rear cover provided on said shielded case so as to cover said rear panel, said rear cover carrying a plurality of openings for exposing said interface connectors;

    said rear cover being adapted for carrying a shield cover plate at an outer side thereof for shielding one or more of said openings.

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