FR2406358A1 - Circuit d'interface pour poste telephonique - Google Patents

Circuit d'interface pour poste telephonique

Info

Publication number
FR2406358A1
FR2406358A1 FR7828846A FR7828846A FR2406358A1 FR 2406358 A1 FR2406358 A1 FR 2406358A1 FR 7828846 A FR7828846 A FR 7828846A FR 7828846 A FR7828846 A FR 7828846A FR 2406358 A1 FR2406358 A1 FR 2406358A1
Authority
FR
France
Prior art keywords
interface circuit
telephone set
telephone station
telephone
power
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.)
Granted
Application number
FR7828846A
Other languages
English (en)
Other versions
FR2406358B1 (fr
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.)
Burr Brown Research Corp
Original Assignee
Burr Brown Research Corp
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 Burr Brown Research Corp filed Critical Burr Brown Research Corp
Publication of FR2406358A1 publication Critical patent/FR2406358A1/fr
Application granted granted Critical
Publication of FR2406358B1 publication Critical patent/FR2406358B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/587—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using opto-couplers

Abstract

L'invention concerne la téléphonie. Un circuit d'interface pour poste téléphonique utilise des sources de courant 43 et 44 pour assurer l'alimentation continue du poste téléphonique 12'. La configuration utilisée permet d'appliquer une tension continue stable au poste téléphonique, entre les noeuds 42 et 47, et réduit la dissipation dans le poste téléphonique comme dans les circuits d'alimentation. Application aux installations téléphoniques privées.
FR7828846A 1977-10-11 1978-10-10 Circuit d'interface pour poste telephonique Expired FR2406358B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/841,009 US4142075A (en) 1977-10-11 1977-10-11 Interface circuit and method for telephone extension lines

Publications (2)

Publication Number Publication Date
FR2406358A1 true FR2406358A1 (fr) 1979-05-11
FR2406358B1 FR2406358B1 (fr) 1986-06-20

Family

ID=25283787

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7828846A Expired FR2406358B1 (fr) 1977-10-11 1978-10-10 Circuit d'interface pour poste telephonique

Country Status (5)

Country Link
US (1) US4142075A (fr)
JP (3) JPS593915B2 (fr)
DE (1) DE2844304A1 (fr)
FR (1) FR2406358B1 (fr)
GB (2) GB2060315B (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1159706B (it) * 1978-06-02 1987-03-04 Cselt Centro Studi Lab Telecom Circuito telefonico elettronico di linea d'utente
FR2437757A2 (fr) * 1978-06-26 1980-04-25 Trt Telecom Radio Electr Joncteur d'abonne destine a assurer un couplage en deux fils ou quatre fils avec un central telephonique
US4278847A (en) * 1979-02-26 1981-07-14 Tii Corporation Transformerless hybrid circuits
US4272656A (en) * 1979-04-05 1981-06-09 Precision Monolithics, Inc. Quasi-resistive battery feed for telephone circuits
NL7903664A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
US4300023A (en) * 1979-08-13 1981-11-10 Motorola, Inc. Hybrid circuit
DE2933847C2 (de) * 1979-08-21 1981-12-03 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum Empfang von Gleichstromzeichen in Fernschreib- und Datenübertragungsanlagen
GB2064915B (en) * 1979-11-29 1984-03-21 Standard Telephones Cables Ltd Telephone line feed circuit
US4387273A (en) * 1980-08-25 1983-06-07 International Telephone And Telegraph Corporation Subscriber line interface circuit with impedance synthesizer
US4406929A (en) * 1981-02-26 1983-09-27 Motorola Inc. Hook status detector for a subscriber loop interface circuit
AT384337B (de) * 1982-07-22 1987-10-27 Alcatel Austria Ag Schnittstellenschaltung mit zweidraht-vierdraht- umsetzung fuer fernsprechvermittlungsanlagen
US4759059A (en) * 1984-06-01 1988-07-19 Christensen Larry B Analog telephone circuit for digital telephone system
US4602130A (en) * 1984-10-15 1986-07-22 Itt Corporation Dual voltage source feed circuit configuration for a telephone line circuit
US4598173A (en) * 1984-10-15 1986-07-01 Itt Corporation Interface circuit for a subscriber line circuit
HU193107B (en) * 1985-03-29 1987-08-28 Bhg Hiradastech Vallalat Circuit arrangement for making circuit of main route, in particular to digital sub-exchanges
US5280526C1 (en) * 1992-05-26 2001-05-01 Paradyne Corp Transformer-less hybrid circuit
WO1994003990A1 (fr) * 1992-08-07 1994-02-17 Pascom Technologies Pty. Ltd. Dispositif d'interface et d'isolation
GB9219112D0 (en) * 1992-09-09 1992-10-21 Roberts Michael J Completely automatic telecommunicator
US5912964A (en) * 1996-03-27 1999-06-15 Hello Direct, Inc. Adaptive telephone handset interface
US6343126B1 (en) 1996-03-27 2002-01-29 Hello Direct, Inc. Method and apparatus for interfacing analog telephone apparatus to a digital, analog or hybrid telephone switching system
US5892823A (en) 1996-03-27 1999-04-06 Hello Direct, Inc. Smart interface technology
US5790658A (en) * 1996-10-28 1998-08-04 Advanced Micro Devices, Inc. High performance echo canceller for high speed modem
US6337906B1 (en) * 1997-05-23 2002-01-08 Microlog Corporation Apparatus and method for coupling an automated attendant to a telecommunications system
US7031454B1 (en) 1997-11-06 2006-04-18 Hello Direct, Inc. Method and apparatus for interfacing telephone apparatus to a digital, analog or hybrid telephone switching system
WO2005104249A1 (fr) * 2004-04-21 2005-11-03 Matsushita Electric Industrial Co., Ltd. Puce a semiconducteur pour attaquer un element emetteur de lumiere, dispositif emetteur de lumiere et equipement d’eclairage
US8246384B1 (en) * 2008-07-25 2012-08-21 Wallace Henry B Variable capacitance audio cable
CN108429568B (zh) * 2018-05-14 2024-01-30 河北豪沃尔智能科技有限责任公司 一种二线四线转换电路及转换方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987257A (en) * 1975-05-29 1976-10-19 International Telephone And Telegraph Corporation Optically coupled two-wire to four-wire hybrid lines
US4041252A (en) * 1976-06-07 1977-08-09 North Electric Company Transformerless two-wire/four-wire hybrid with DC sourcing capability
FR2343378A1 (fr) * 1976-03-02 1977-09-30 Ibm Circuit de ligne pour relier une ligne a deux fils a un systeme de commutation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5642148B2 (fr) * 1975-01-24 1981-10-02
FR2305080A1 (fr) * 1975-03-20 1976-10-15 Jeumont Schneider Termineur electronique
US4037065A (en) * 1976-10-04 1977-07-19 The United States Of America As Represented By The Secretary Of The Navy 20 Hz Ringdown solid state two-wire/four-wire converter
US4056691A (en) * 1977-01-05 1977-11-01 Bell Telephone Laboratories, Incorporated Telephone subscriber line circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987257A (en) * 1975-05-29 1976-10-19 International Telephone And Telegraph Corporation Optically coupled two-wire to four-wire hybrid lines
FR2343378A1 (fr) * 1976-03-02 1977-09-30 Ibm Circuit de ligne pour relier une ligne a deux fils a un systeme de commutation
US4041252A (en) * 1976-06-07 1977-08-09 North Electric Company Transformerless two-wire/four-wire hybrid with DC sourcing capability

Also Published As

Publication number Publication date
US4142075A (en) 1979-02-27
JPS5464912A (en) 1979-05-25
GB2060315B (en) 1982-09-08
JPS57118466A (en) 1982-07-23
DE2844304A1 (de) 1979-04-12
JPS593915B2 (ja) 1984-01-26
GB2060315A (en) 1981-04-29
FR2406358B1 (fr) 1986-06-20
GB2005963A (en) 1979-04-25
JPS57118465A (en) 1982-07-23
GB2005963B (en) 1982-03-24
JPS6219105B2 (fr) 1987-04-27

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse