ES2137989T3 - Circuito de telefono de baja atenuacion. - Google Patents

Circuito de telefono de baja atenuacion.

Info

Publication number
ES2137989T3
ES2137989T3 ES93910253T ES93910253T ES2137989T3 ES 2137989 T3 ES2137989 T3 ES 2137989T3 ES 93910253 T ES93910253 T ES 93910253T ES 93910253 T ES93910253 T ES 93910253T ES 2137989 T3 ES2137989 T3 ES 2137989T3
Authority
ES
Spain
Prior art keywords
pct
circuit
low loss
sub
date dec
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 - Lifetime
Application number
ES93910253T
Other languages
English (en)
Inventor
John Handford
John Nelson
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.)
Marconi Communications Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconi Communications Ltd
Marconi Co Ltd
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 Marconi Communications Ltd, Marconi Co Ltd filed Critical Marconi Communications Ltd
Application granted granted Critical
Publication of ES2137989T3 publication Critical patent/ES2137989T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance
    • 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)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Dc-Dc Converters (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Telephone Function (AREA)

Abstract

UN CIRCUITO DESNUDO DE POTENCIA DE LINEA TELEFONICA INCLUYE UN SUBCIRCUITO DE PROTECCION DE POLARIDAD DE BAJA PERDIDA (3, 4), UN SUBCIRCUITO DE TOMA DE LINEA DE BAJA PERDIDA (5), UN SUBCIRCUITO TRANSFORMADOR DE VOZ DE BAJA PERDIDA (7) Y UNA FUENTE DE ALIMENTACION DE MODO CONMUTADO DE ALTA EFICIENCIA (13) QUE TIENE UNA TENSION DE SALIDA MENOR QUE LA TENSION DE ENTRADA, DISPUESTA PARA RECUPERAR APROXIMADAMENTE UN 80% DE LA POTENCIA QUE SE PRESENTA EN LOS TERMINALES DEL RECEPTOR TELEFONICO.
ES93910253T 1992-05-22 1993-05-21 Circuito de telefono de baja atenuacion. Expired - Lifetime ES2137989T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB929211031A GB9211031D0 (en) 1992-05-22 1992-05-22 Telephone circuit

Publications (1)

Publication Number Publication Date
ES2137989T3 true ES2137989T3 (es) 2000-01-01

Family

ID=10715955

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93910253T Expired - Lifetime ES2137989T3 (es) 1992-05-22 1993-05-21 Circuito de telefono de baja atenuacion.

Country Status (8)

Country Link
US (1) US5633925A (es)
EP (1) EP0788708B1 (es)
AT (1) ATE186808T1 (es)
DE (1) DE69327064T2 (es)
DK (1) DK0788708T3 (es)
ES (1) ES2137989T3 (es)
GB (1) GB9211031D0 (es)
WO (1) WO1993025037A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5740241A (en) * 1995-05-12 1998-04-14 Carrier Access Corporation T1 channel bank control process and apparatus
US6252957B1 (en) 1998-10-07 2001-06-26 Teledex Corporation Low power line selection circuit for a telephone
US6668060B1 (en) 1999-10-26 2003-12-23 Adtran, Inc. Tracking switchmode power converter for telephony interface circuit
US7139391B2 (en) * 2001-10-30 2006-11-21 Integration Associates, Inc. DAA hook switch
US7092500B2 (en) * 2002-12-20 2006-08-15 International Business Machines Corporation Remote telephony receiver

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA954644A (en) * 1972-11-28 1974-09-10 Arthur D. Moore Polarity guard
US4306119A (en) * 1980-07-03 1981-12-15 Bell Telephone Laboratories, Incorporated Telephone outpulsing circuit
DE3244240C1 (de) * 1982-11-08 1984-03-15 Sodeco-Saia AG, 1211 Genève Fernsprechstelle mit niedrigem Speiseleistungsverbrauch
US5038375A (en) * 1989-06-23 1991-08-06 Aptek Technologies, Inc. Circuit arrangement for preventing gain from responding to frequency variation despite the presence of an isolation transformer

Also Published As

Publication number Publication date
US5633925A (en) 1997-05-27
WO1993025037A1 (en) 1993-12-09
DE69327064T2 (de) 2000-04-06
EP0788708A1 (en) 1997-08-13
DE69327064D1 (de) 1999-12-23
GB9211031D0 (en) 1992-07-08
DK0788708T3 (da) 2000-04-25
EP0788708B1 (en) 1999-11-17
ATE186808T1 (de) 1999-12-15

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