DE68920459D1 - Umschaltungseinrichtung für Übertragungsleitungen. - Google Patents

Umschaltungseinrichtung für Übertragungsleitungen.

Info

Publication number
DE68920459D1
DE68920459D1 DE68920459T DE68920459T DE68920459D1 DE 68920459 D1 DE68920459 D1 DE 68920459D1 DE 68920459 T DE68920459 T DE 68920459T DE 68920459 T DE68920459 T DE 68920459T DE 68920459 D1 DE68920459 D1 DE 68920459D1
Authority
DE
Germany
Prior art keywords
switching device
transmission lines
lines
transmission
switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE68920459T
Other languages
English (en)
Other versions
DE68920459T2 (de
Inventor
Takeo Fukushima
Kohichi Nishimura
Masumi Kurokawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE68920459D1 publication Critical patent/DE68920459D1/de
Publication of DE68920459T2 publication Critical patent/DE68920459T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
    • H04B1/745—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus using by-passing or self-healing methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Small-Scale Networks (AREA)
DE68920459T 1988-03-09 1989-03-09 Umschaltungseinrichtung für Übertragungsleitungen. Expired - Fee Related DE68920459T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63055325A JPH01228328A (ja) 1988-03-09 1988-03-09 伝送路の回線切替方式

Publications (2)

Publication Number Publication Date
DE68920459D1 true DE68920459D1 (de) 1995-02-23
DE68920459T2 DE68920459T2 (de) 1995-06-14

Family

ID=12995390

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68920459T Expired - Fee Related DE68920459T2 (de) 1988-03-09 1989-03-09 Umschaltungseinrichtung für Übertragungsleitungen.

Country Status (5)

Country Link
US (1) US5109296A (de)
EP (1) EP0332199B1 (de)
JP (1) JPH01228328A (de)
CA (1) CA1338357C (de)
DE (1) DE68920459T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5313456A (en) * 1989-03-03 1994-05-17 Fujitsu Limited Data link protecting system
JP2558012B2 (ja) * 1990-11-27 1996-11-27 富士通株式会社 通信回線バックアップ方式
JPH04286230A (ja) * 1991-03-14 1992-10-12 Fujitsu Ltd 現用／予備用回線切替方式
JP2528225B2 (ja) * 1991-09-18 1996-08-28 富士通株式会社 伝送路切替方式
US5365359A (en) * 1993-05-14 1994-11-15 Catamount Scientific, Inc. Method for electrically passive self-routing optical multiplexing
US5365512A (en) * 1993-07-02 1994-11-15 Ericsson Ge Mobile Communications Inc. Multisite trunked RF communication system with reliable control messaging network
US5408462A (en) * 1993-10-07 1995-04-18 Adc Telecommunications, Inc. Protection switching apparatus and method
US5771274A (en) * 1996-06-21 1998-06-23 Mci Communications Corporation Topology-based fault analysis in telecommunications networks
US5946373A (en) * 1996-06-21 1999-08-31 Mci Communications Corporation Topology-based fault analysis in telecommunications networks
JP3854372B2 (ja) * 1997-07-03 2006-12-06 株式会社日立コミュニケーションテクノロジー 光クロスコネクト装置
US6362905B1 (en) * 1997-02-24 2002-03-26 Hitachi, Ltd. Optical crossconnect apparatus and optical transmission system
US5887050A (en) * 1997-05-09 1999-03-23 Siemens Building Technologies, Inc. Repeater apparatus having isolation circuit
US6282169B1 (en) * 1999-06-11 2001-08-28 Amplify.Net Inc. Serial redundant bypass control mechanism for maintaining network bandwidth management service
DE10041567A1 (de) * 2000-08-24 2002-03-21 Eichhoff Gmbh Stromversorgungsnetz und Vorrichtung zum Einsatz in eine Koppelstelle eines Stromversorgungsnetzes
JP3671868B2 (ja) * 2001-06-07 2005-07-13 住友金属工業株式会社 高Ｃｒ含有鋼の鋳造方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882456A (en) * 1972-01-26 1975-05-06 Nippon Electric Co Fault-detecting system for a multi-channel relay system
US3876983A (en) * 1974-04-29 1975-04-08 Ibm Synchronous disconnection and rearrangement
US3864533A (en) * 1973-06-01 1975-02-04 Vidar Corp Automatic line transfer system and method for a communications system
JPS56149851A (en) * 1980-04-23 1981-11-19 Mitsubishi Electric Corp Looplike data transmission equipment
US4347607A (en) * 1980-05-09 1982-08-31 Harris Corporation Voice alarm signalling system
US4449247A (en) * 1980-07-30 1984-05-15 Harris Corporation Local orderwire facility for fiber optic communication system
JPH0614643B2 (ja) * 1983-12-05 1994-02-23 株式会社日立製作所 ル−プ式デ−タ伝送システムの障害回復検出方法
US4630268A (en) * 1984-08-30 1986-12-16 Rockwell International Corporation Communication circuit loopback test apparatus
US4688260A (en) * 1985-10-09 1987-08-18 Westinghouse Electric Corp. High-reliability fiber optic repeater
JPS62219720A (ja) * 1986-03-20 1987-09-28 Nec Corp 伝送路切替方式

Also Published As

Publication number Publication date
EP0332199A3 (de) 1991-03-20
DE68920459T2 (de) 1995-06-14
US5109296A (en) 1992-04-28
EP0332199A2 (de) 1989-09-13
EP0332199B1 (de) 1995-01-11
CA1338357C (en) 1996-05-28
JPH0559617B2 (de) 1993-08-31
JPH01228328A (ja) 1989-09-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee