GB2172174B - Switching systems - Google Patents

Switching systems

Info

Publication number
GB2172174B
GB2172174B GB8605574A GB8605574A GB2172174B GB 2172174 B GB2172174 B GB 2172174B GB 8605574 A GB8605574 A GB 8605574A GB 8605574 A GB8605574 A GB 8605574A GB 2172174 B GB2172174 B GB 2172174B
Authority
GB
United Kingdom
Prior art keywords
switching systems
switching
systems
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
Application number
GB8605574A
Other versions
GB8605574D0 (en
GB2172174A (en
Inventor
Dr Alan Michael Hill
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of GB8605574D0 publication Critical patent/GB8605574D0/en
Publication of GB2172174A publication Critical patent/GB2172174A/en
Application granted granted Critical
Publication of GB2172174B publication Critical patent/GB2172174B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0052—Interconnection of switches

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
GB8605574A 1985-03-07 1986-03-06 Switching systems Expired GB2172174B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858505942A GB8505942D0 (en) 1985-03-07 1985-03-07 Switching systems

Publications (3)

Publication Number Publication Date
GB8605574D0 GB8605574D0 (en) 1986-04-09
GB2172174A GB2172174A (en) 1986-09-10
GB2172174B true GB2172174B (en) 1989-06-14

Family

ID=10575616

Family Applications (2)

Application Number Title Priority Date Filing Date
GB858505942A Pending GB8505942D0 (en) 1985-03-07 1985-03-07 Switching systems
GB8605574A Expired GB2172174B (en) 1985-03-07 1986-03-06 Switching systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB858505942A Pending GB8505942D0 (en) 1985-03-07 1985-03-07 Switching systems

Country Status (1)

Country Link
GB (2) GB8505942D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5363228A (en) * 1993-03-05 1994-11-08 General Electric Company Optical device with spatial light modulators for switching arbitrarily polarized light
US6366713B1 (en) 1998-09-04 2002-04-02 Tellabs Operations, Inc. Strictly non-blocking optical switch core having optimized switching architecture based on reciprocity conditions
CA2354446A1 (en) * 2000-11-22 2002-05-22 Blaine Hobson An optical switch and method of switching optical signals

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB966716A (en) * 1959-08-26 1964-08-12 Arnstadt Fernmeldewerk Electronic switch
GB1324174A (en) * 1969-10-21 1973-07-18 Western Electric Co Switching networks
GB2093304A (en) * 1981-02-13 1982-08-25 France Etat Matrix-type Optical Concentrator-distributor
GB2154091A (en) * 1984-01-27 1985-08-29 Yokogawa Hokushin Electric Optical data way

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB966716A (en) * 1959-08-26 1964-08-12 Arnstadt Fernmeldewerk Electronic switch
GB1324174A (en) * 1969-10-21 1973-07-18 Western Electric Co Switching networks
GB2093304A (en) * 1981-02-13 1982-08-25 France Etat Matrix-type Optical Concentrator-distributor
GB2154091A (en) * 1984-01-27 1985-08-29 Yokogawa Hokushin Electric Optical data way

Also Published As

Publication number Publication date
GB8505942D0 (en) 1985-04-11
GB8605574D0 (en) 1986-04-09
GB2172174A (en) 1986-09-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950306