IT8025213A0 - Disposizione circuitale per utenti duplex in centrali di commutazione telefonica di tipo elettronico. - Google Patents

Disposizione circuitale per utenti duplex in centrali di commutazione telefonica di tipo elettronico.

Info

Publication number
IT8025213A0
IT8025213A0 IT8025213A IT2521380A IT8025213A0 IT 8025213 A0 IT8025213 A0 IT 8025213A0 IT 8025213 A IT8025213 A IT 8025213A IT 2521380 A IT2521380 A IT 2521380A IT 8025213 A0 IT8025213 A0 IT 8025213A0
Authority
IT
Italy
Prior art keywords
circuit arrangement
telephone switching
electronic telephone
switching panels
duplex users
Prior art date
Application number
IT8025213A
Other languages
English (en)
Other versions
IT1149225B (it
Inventor
Ennio Bonaparte
Virgilio Mosca
Original Assignee
Italtel 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 Italtel Spa filed Critical Italtel Spa
Priority to IT25213/80A priority Critical patent/IT1149225B/it
Publication of IT8025213A0 publication Critical patent/IT8025213A0/it
Priority to US06/309,479 priority patent/US4435619A/en
Priority to FR8119022A priority patent/FR2492206A1/fr
Priority to DE19813140182 priority patent/DE3140182A1/de
Priority to BR8106570A priority patent/BR8106570A/pt
Application granted granted Critical
Publication of IT1149225B publication Critical patent/IT1149225B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
IT25213/80A 1980-10-09 1980-10-09 Disposizione circuitale per utenti duplex in centrali di commutazione telefonica di tipo elettronico IT1149225B (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT25213/80A IT1149225B (it) 1980-10-09 1980-10-09 Disposizione circuitale per utenti duplex in centrali di commutazione telefonica di tipo elettronico
US06/309,479 US4435619A (en) 1980-10-09 1981-10-07 Switching network interfacing telephone-exchange equipment with two-subscriber party line
FR8119022A FR2492206A1 (fr) 1980-10-09 1981-10-09 Disposition de circuit pour usagers duplex dans des centres de commutation telephonique du type electronique
DE19813140182 DE3140182A1 (de) 1980-10-09 1981-10-09 "schaltungsanordnung fuer ueber eine zweieranschlusseinrichtung an eine fernsprechvermittlungsstelle angeschlossene teilnehmer"
BR8106570A BR8106570A (pt) 1980-10-09 1981-10-09 Disposicao de circuito

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT25213/80A IT1149225B (it) 1980-10-09 1980-10-09 Disposizione circuitale per utenti duplex in centrali di commutazione telefonica di tipo elettronico

Publications (2)

Publication Number Publication Date
IT8025213A0 true IT8025213A0 (it) 1980-10-09
IT1149225B IT1149225B (it) 1986-12-03

Family

ID=11216022

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25213/80A IT1149225B (it) 1980-10-09 1980-10-09 Disposizione circuitale per utenti duplex in centrali di commutazione telefonica di tipo elettronico

Country Status (5)

Country Link
US (1) US4435619A (it)
BR (1) BR8106570A (it)
DE (1) DE3140182A1 (it)
FR (1) FR2492206A1 (it)
IT (1) IT1149225B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3517088C1 (de) * 1985-05-11 1986-09-04 Neumann Elektronik GmbH, 4330 Mülheim Einrichtung an einem Fernsprech-Teilnehmeranschluss zur Abschaltung einer von zwei wechselweise automatisch anschaltbaren Sprechstellen von der Vermittlungsstelle aus bei ungewolltem Schleifenanschluss in dieser Sprechstelle
DE3532960C1 (de) * 1985-09-16 1987-02-05 Neumann Elektronik Gmbh Einrichtung an einem Fernsprech-Teilnehmeranschluss mit zwei wechselweise automatisch anschaltbaren Sprechstellen zur Abschaltung einer,einen ungewollten Schleifenschluss aufweisenden Sprechstelle von der Vermittlungsstelle aus
US5245654A (en) * 1991-10-10 1993-09-14 Cermetek Microelectronics, Inc. Solid state isolation device using opto-isolators

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE756800A (fr) * 1969-09-29 1971-03-29 Siemens Ag Montage pour installations de telecommunications a commande centrale, plus particulierement pour installations telephoniques a branchement double
DE1950427B2 (de) * 1969-10-07 1976-12-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung fuer zweieranschluesse in fernmelde-, insbesondere fernsprechanlagen
DE2147732C3 (de) * 1971-09-24 1978-10-05 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zum Prüfen der Teilnehmeranschlußleitungen in Fernmelde- insbesondere Fernsprechanlagen mit jeweils zwei über eine gemeinsame Anschlußleitung angeschlossenen Teilnehmerstellen
AT336090B (de) * 1974-09-20 1977-04-12 Kapsch Telephon Telegraph Gesellschaftsanschluss

Also Published As

Publication number Publication date
FR2492206B3 (it) 1983-07-29
FR2492206A1 (fr) 1982-04-16
IT1149225B (it) 1986-12-03
US4435619A (en) 1984-03-06
BR8106570A (pt) 1982-06-29
DE3140182A1 (de) 1982-06-09

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