ES504913A0 - Un circuito de interfaz para linea de abonado con sintetiza-dor de impedancia - Google Patents

Un circuito de interfaz para linea de abonado con sintetiza-dor de impedancia

Info

Publication number
ES504913A0
ES504913A0 ES504913A ES504913A ES504913A0 ES 504913 A0 ES504913 A0 ES 504913A0 ES 504913 A ES504913 A ES 504913A ES 504913 A ES504913 A ES 504913A ES 504913 A0 ES504913 A0 ES 504913A0
Authority
ES
Spain
Prior art keywords
transverse
circuit
subscriber line
interface circuit
impedance
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
ES504913A
Other languages
English (en)
Other versions
ES8301404A1 (es
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES504913A0 publication Critical patent/ES504913A0/es
Publication of ES8301404A1 publication Critical patent/ES8301404A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Networks Using Active Elements (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Selective Calling Equipment (AREA)
ES504913A 1980-08-25 1981-08-24 Un circuito de interfaz para linea de abonado con sintetiza-dor de impedancia Expired ES8301404A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/180,751 US4387273A (en) 1980-08-25 1980-08-25 Subscriber line interface circuit with impedance synthesizer

Publications (2)

Publication Number Publication Date
ES504913A0 true ES504913A0 (es) 1982-12-01
ES8301404A1 ES8301404A1 (es) 1982-12-01

Family

ID=22661636

Family Applications (1)

Application Number Title Priority Date Filing Date
ES504913A Expired ES8301404A1 (es) 1980-08-25 1981-08-24 Un circuito de interfaz para linea de abonado con sintetiza-dor de impedancia

Country Status (12)

Country Link
US (1) US4387273A (es)
EP (1) EP0046588B1 (es)
JP (1) JPS5772464A (es)
AT (1) ATE14178T1 (es)
AU (1) AU544584B2 (es)
BE (1) BE890061R (es)
CA (1) CA1173578A (es)
DE (1) DE3171217D1 (es)
ES (1) ES8301404A1 (es)
HK (1) HK4186A (es)
NO (1) NO157280C (es)
NZ (1) NZ198034A (es)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317963A (en) * 1980-09-22 1982-03-02 International Telephone And Telegraph Corporation Subscriber line interface circuit utilizing impedance synthesizer and shared voltage source for loop current regulation control
GB2104330A (en) * 1981-08-19 1983-03-02 Texas Instruments Ltd Improvements in or relating to amplifiers
JPS5895488A (ja) * 1981-12-02 1983-06-07 Hitachi Ltd ライン回路
US4454477A (en) * 1982-04-28 1984-06-12 At&T Bell Laboratories Loop current detector with threshold setting impedance
CA1179078A (en) * 1982-06-04 1984-12-04 Stanley D. Rosenbaum Active impedance line feed circuit
CA1178386A (en) * 1982-06-07 1984-11-20 Stanley D. Rosenbaum Active impedance transformer assisted line feed circuit
US4514595A (en) * 1982-06-10 1985-04-30 Northern Telecom Limited Active impedance line feed circuit
DE3235085A1 (de) * 1982-09-22 1984-03-22 Siemens AG, 1000 Berlin und 8000 München Schleifenstromeinspeisung fuer einen kennzeichenumsetzer
SE433285B (sv) * 1982-09-22 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat
US4600811A (en) * 1982-12-28 1986-07-15 Nec Corporation Subscriber line interface circuit
JPS59125157A (ja) * 1982-12-30 1984-07-19 Fujitsu Ltd 給電回路
US4503289A (en) * 1983-01-17 1985-03-05 At&T Bell Laboratories Line circuit with flux compensation and active impedance termination
US4577064A (en) * 1983-04-29 1986-03-18 Gte Lenkurt Incorporated Auto-balance circuit for battery feed in a telephone circuit
US4558186A (en) * 1983-09-06 1985-12-10 Gte Automatic Electric Incorporated Single power supply battery feed circuit
JPS60141006A (ja) * 1983-12-28 1985-07-26 Nec Corp インピ−ダンス合成回路
US4532381A (en) * 1984-02-13 1985-07-30 Northern Telecom Limited Active impedance line feed circuit
US4674119A (en) * 1984-04-10 1987-06-16 Itt Corporation Wide-band high voltage amplifier for telephone exchange subscriber line interface utilizing low voltage control circuitry
US4581487A (en) * 1984-07-11 1986-04-08 Itt Corporation Universal DC feed for telephone line and trunk circuits
DE3428106A1 (de) * 1984-07-30 1986-02-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Teilnehmeranschlussschaltung
US4598173A (en) * 1984-10-15 1986-07-01 Itt Corporation Interface circuit for a subscriber line circuit
US4602130A (en) * 1984-10-15 1986-07-22 Itt Corporation Dual voltage source feed circuit configuration for a telephone line circuit
US4665547A (en) * 1984-11-02 1987-05-12 At&T Company Limiting amplifier for common mode feedback in telephone line feed circuits
FR2577737B1 (fr) * 1985-02-15 1987-04-17 Thomson Csf Circuit d'interface de ligne d'abonne telephonique avec mode de veille a puissance reduite
DE3584973D1 (de) * 1985-05-17 1992-01-30 Alcatel Nv Fernmeldeleitungsschaltung.
US4677667A (en) * 1985-08-29 1987-06-30 Gte Communication Systems Corporation Subscriber line circuit having improved AC impedance matching
US4761812A (en) * 1985-12-10 1988-08-02 U.S. Holding Company, Inc. Constant power telephone line circuit
AT386307B (de) * 1986-05-23 1988-08-10 Siemens Ag Oesterreich Fernsprechteilnehmerschaltung
CA1255026A (en) * 1986-12-24 1989-05-30 Mitel Corporation Dc control circuit
CA1257027A (en) * 1987-03-10 1989-07-04 Rolf Meier Compensation circuit for use with an integrating amplifier
CA1291836C (en) * 1987-06-17 1991-11-05 Kenji Takato Battery feed circuit
US4899382A (en) * 1988-06-15 1990-02-06 Siemens Transmission Systems, Inc. Telephone circuit using DC blocked transformer and negative impedance technique
FR2637142B1 (fr) * 1988-09-28 1994-07-22 Cit Alcatel Dispositif de raccordement de ligne d'abonne
US5258713A (en) * 1992-04-16 1993-11-02 Northern Telecom Limited Impedance generator for a telephone line interface circuit
DE4221567C2 (de) * 1992-07-01 1995-07-06 Siemens Ag Leitungsabschluß einer Telefonleitung
EP0622943B1 (en) * 1993-04-30 2001-09-12 STMicroelectronics S.r.l. Power management circuit for a subscriber line interface circuit
JPH0767149A (ja) * 1993-08-30 1995-03-10 Fujitsu Ltd 加入者回路の二線終端インピーダンス生成回路
SE501975C2 (sv) * 1993-11-09 1995-07-03 Ericsson Telefon Ab L M Gränssnittskrets mellan fyrtrådsledning och tvåtrådsledning
EP0703695B1 (en) * 1994-09-22 2004-05-06 STMicroelectronics N.V. Line impedance synthesis circuit
US5721774A (en) * 1995-12-15 1998-02-24 Lucent Technologies Inc. Longitudinally balanced, dual voltage line-feed circuit
US5815569A (en) * 1996-06-27 1998-09-29 Lucent Technologies Inc. Method for controlling power losses associated with line interface circuits in telecommunications networks
US7110531B2 (en) * 2000-02-17 2006-09-19 Analog Devices, Inc. Isolation system with analog communication across an isolation barrier
US6573729B1 (en) 2000-08-28 2003-06-03 3Com Corporation Systems and methods for impedance synthesis
US7113590B2 (en) * 2003-03-07 2006-09-26 Legerity, Inc. Method and apparatus for a differential feedback in an active impedence feedback circuit
US7254229B2 (en) * 2003-03-07 2007-08-07 Legerity, Inc. Method and apparatus for an active impedance feedback
EP1548951B1 (en) * 2003-12-26 2011-06-22 Alcatel Lucent A regulator for impedance balancing of a transmission wire pair

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2372554A1 (fr) * 1976-11-25 1978-06-23 Jeumont Schneider Equipement de ligne d'abonne pour central telephonique
US4056689A (en) * 1977-01-05 1977-11-01 Bell Telephone Laboratories, Incorporated Telephone subscriber line circuit
US4142075A (en) * 1977-10-11 1979-02-27 Burr-Brown Research Corporation Interface circuit and method for telephone extension lines
US4254305A (en) * 1979-02-07 1981-03-03 International Telephone And Telegraph Corporation Current limited subscriber line feed circuit
US4315106A (en) * 1979-11-28 1982-02-09 International Telephone And Telegraph Corporation Apparatus for regulating current supplied to a telephone line signal of the type employed in digital telephone systems

Also Published As

Publication number Publication date
NZ198034A (en) 1985-03-20
NO812718L (no) 1982-02-26
EP0046588A1 (en) 1982-03-03
NO157280C (no) 1988-02-17
EP0046588B1 (en) 1985-07-03
BE890061R (nl) 1982-02-25
AU7432281A (en) 1982-03-04
US4387273A (en) 1983-06-07
JPS5772464A (en) 1982-05-06
HK4186A (en) 1986-01-31
NO157280B (no) 1987-11-09
AU544584B2 (en) 1985-06-06
ES8301404A1 (es) 1982-12-01
ATE14178T1 (de) 1985-07-15
CA1173578A (en) 1984-08-28
DE3171217D1 (en) 1985-08-08

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