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WO1998001990A3 - Power supply system for telephone line wires - Google Patents

Power supply system for telephone line wires Download PDF

Info

Publication number
WO1998001990A3
WO1998001990A3 PCT/GB1997/001844 GB9701844W WO9801990A3 WO 1998001990 A3 WO1998001990 A3 WO 1998001990A3 GB 9701844 W GB9701844 W GB 9701844W WO 9801990 A3 WO9801990 A3 WO 9801990A3
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
vicinity
load
supply system
telephone line
Prior art date
Application number
PCT/GB1997/001844
Other languages
French (fr)
Other versions
WO1998001990A2 (en
Inventor
Francis Charles Hackett-Jones
Philip Rushton
Original Assignee
Telspec Plc
Hackett Jones Francis Charles
Philip Rushton
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 Telspec Plc, Hackett Jones Francis Charles, Philip Rushton filed Critical Telspec Plc
Priority to AU34532/97A priority Critical patent/AU3453297A/en
Publication of WO1998001990A2 publication Critical patent/WO1998001990A2/en
Publication of WO1998001990A3 publication Critical patent/WO1998001990A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0435—Details
    • 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
    • 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
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1308—Power supply
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13216—Code signals, frame structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13302—Magnetic elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

A power supply system, more particularly for telephone lines, comprises a load coupled to the power supply by a line, for example a telephone line, the resistance of which is significant in relation to the resistance of the load. Monitoring means are provided in the vicinity of the power supply and in the vicinity of the load for monitoring the voltage and/or current in the line circuit. Telemetry means is provided for transmitting output signals from the monitoring means in the vicinity of the load to receiving means in the vicinity of the power supply. Means associated with the power supply is arranged to receive signals from the respective monitoring means and to control the power delivered by the power supply.
PCT/GB1997/001844 1996-07-09 1997-07-09 Power supply system for telephone line wires WO1998001990A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU34532/97A AU3453297A (en) 1996-07-09 1997-07-09 Power supply system for telephone line wires

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9614401A GB2315188B (en) 1996-07-09 1996-07-09 Power supply system for telephone line wires
GB9614401.9 1996-07-09

Publications (2)

Publication Number Publication Date
WO1998001990A2 WO1998001990A2 (en) 1998-01-15
WO1998001990A3 true WO1998001990A3 (en) 1998-03-05

Family

ID=10796610

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/001844 WO1998001990A2 (en) 1996-07-09 1997-07-09 Power supply system for telephone line wires

Country Status (4)

Country Link
AU (1) AU3453297A (en)
GB (1) GB2315188B (en)
WO (1) WO1998001990A2 (en)
ZA (1) ZA966101B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7535966B2 (en) * 2004-08-17 2009-05-19 Adaptive Spectrum And Signal Alignment, Inc. DSL data collection system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4808905A (en) * 1986-08-05 1989-02-28 Advanced Micro Devices, Inc. Current-limiting circuit
JPH0372753A (en) * 1989-08-11 1991-03-27 Nec Eng Ltd Power source voltage control circuit
EP0450884A2 (en) * 1990-04-04 1991-10-09 Seiscor Technologies, Inc. A subscriber line interface circuit providing regulated current
JPH04157996A (en) * 1990-10-22 1992-05-29 Nec Corp Feeding system for key service unit
JPH05252286A (en) * 1992-03-03 1993-09-28 Matsushita Electric Ind Co Ltd Line terminal equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2071461B (en) * 1980-02-14 1984-01-25 Standard Telephones Cables Ltd Telephone line feed
SE431704B (en) * 1982-07-06 1984-02-20 Ericsson Telefon Ab L M PROCEDURE FOR POWER SUPPLY OF A SUBSCRIBER DEVICE FROM A TELEPHONE SWITCH
IT1197917B (en) * 1986-10-24 1988-12-21 Sgs Microelettronica Spa CONTROL CIRCUIT FOR A VOLTAGE REGULATOR OF A CIRCUIT INTERFACE CONNECTION USER TELEPHONE LINE (SLIC)
AU7354291A (en) * 1990-03-16 1991-11-14 Fujitsu Limited Feed circuit in exchanger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4808905A (en) * 1986-08-05 1989-02-28 Advanced Micro Devices, Inc. Current-limiting circuit
JPH0372753A (en) * 1989-08-11 1991-03-27 Nec Eng Ltd Power source voltage control circuit
EP0450884A2 (en) * 1990-04-04 1991-10-09 Seiscor Technologies, Inc. A subscriber line interface circuit providing regulated current
JPH04157996A (en) * 1990-10-22 1992-05-29 Nec Corp Feeding system for key service unit
JPH05252286A (en) * 1992-03-03 1993-09-28 Matsushita Electric Ind Co Ltd Line terminal equipment

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 240 (E - 1079) 20 June 1991 (1991-06-20) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 447 (E - 1266) 17 September 1992 (1992-09-17) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 010 (E - 1487) 10 January 1994 (1994-01-10) *
SHIZUO NAKANO ET AL: "DESIGN AND ELECTRICAL CHARACTERISTIC EVALUATION FOR INTERFACE CIRCUIT IN ISDN BUS WIRING SYSTEM", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART I - COMMUNICATIONS, vol. 73, no. 12, 1 December 1990 (1990-12-01), pages 9 - 20, XP000229977 *

Also Published As

Publication number Publication date
AU3453297A (en) 1998-02-02
GB9614401D0 (en) 1996-09-04
GB2315188A (en) 1998-01-21
WO1998001990A2 (en) 1998-01-15
ZA966101B (en) 1998-03-03
GB2315188B (en) 1999-04-14

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