GB1322995A - Telephone exchange switching circuits - Google Patents

Telephone exchange switching circuits

Info

Publication number
GB1322995A
GB1322995A GB2417471*A GB2417471A GB1322995A GB 1322995 A GB1322995 A GB 1322995A GB 2417471 A GB2417471 A GB 2417471A GB 1322995 A GB1322995 A GB 1322995A
Authority
GB
United Kingdom
Prior art keywords
crosspoint
crosspoints
speech
scr
diode
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
GB2417471*A
Other languages
English (en)
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.)
Telettra Laboratori di Telefonia Elettronica e Radio SpA
Original Assignee
Telettra Laboratori di Telefonia Elettronica e Radio SpA
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 Telettra Laboratori di Telefonia Elettronica e Radio SpA filed Critical Telettra Laboratori di Telefonia Elettronica e Radio SpA
Publication of GB1322995A publication Critical patent/GB1322995A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Electronic Switches (AREA)
GB2417471*A 1970-03-13 1971-04-19 Telephone exchange switching circuits Expired GB1322995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2188170 1970-03-13

Publications (1)

Publication Number Publication Date
GB1322995A true GB1322995A (en) 1973-07-11

Family

ID=11188157

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2417471*A Expired GB1322995A (en) 1970-03-13 1971-04-19 Telephone exchange switching circuits

Country Status (8)

Country Link
US (1) US3720792A (enExample)
AU (1) AU2587971A (enExample)
CA (1) CA963565A (enExample)
DE (1) DE2112050A1 (enExample)
ES (1) ES389110A1 (enExample)
FR (1) FR2084484A5 (enExample)
GB (1) GB1322995A (enExample)
NL (1) NL7103169A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123652A (en) * 1982-07-01 1984-02-01 Bhg Hiradastech Vallalat Stored programme controlled switching devices

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789151A (en) * 1972-03-06 1974-01-29 Stromberg Carlson Corp Solid state crosspoint switch
US3865979A (en) * 1973-06-21 1975-02-11 Alfred Hestad Matrix control circuit
GB1489577A (en) * 1973-10-02 1977-10-19 Plessey Co Ltd Solid state circuits
JPS5327087B2 (enExample) * 1973-10-27 1978-08-05
US3912877A (en) * 1974-03-20 1975-10-14 Bell Telephone Labor Inc Electrical communication switching network providing far-end crosstalk reduction
DE2419286C2 (de) * 1974-04-22 1984-02-16 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zum Entdämpfen von elektrischen Schaltern mit unterschiedlichem Gleichstrom- und Wechselstromwiderstand, insbesondere von Koppelelementen einer Fernsprechvermittlungsanlage
JPS5759716B2 (enExample) * 1974-07-17 1982-12-16 Hitachi Ltd
JPS5759717B2 (enExample) * 1974-12-27 1982-12-16 Hitachi Ltd
JPS55102989A (en) * 1979-01-30 1980-08-06 Nec Corp Crosstalk reduction circuit
FR2462006A1 (fr) * 1979-07-20 1981-02-06 Ibm France Dispositif pour augmenter l'inductance parallele d'un transformateur
JPS5648185U (enExample) * 1980-08-15 1981-04-28
US4779065A (en) * 1987-04-28 1988-10-18 General Electric Company Microwave signal routing matrix

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123652A (en) * 1982-07-01 1984-02-01 Bhg Hiradastech Vallalat Stored programme controlled switching devices

Also Published As

Publication number Publication date
NL7103169A (enExample) 1971-09-15
US3720792A (en) 1973-03-13
CA963565A (en) 1975-02-25
AU2587971A (en) 1972-08-31
ES389110A1 (es) 1974-04-01
DE2112050A1 (de) 1971-09-30
FR2084484A5 (enExample) 1971-12-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee