DE3377968D1 - Battery feed circuit for a telephone subscriber line - Google Patents

Battery feed circuit for a telephone subscriber line

Info

Publication number
DE3377968D1
DE3377968D1 DE8383307671T DE3377968T DE3377968D1 DE 3377968 D1 DE3377968 D1 DE 3377968D1 DE 8383307671 T DE8383307671 T DE 8383307671T DE 3377968 T DE3377968 T DE 3377968T DE 3377968 D1 DE3377968 D1 DE 3377968D1
Authority
DE
Germany
Prior art keywords
subscriber line
feed circuit
telephone subscriber
battery feed
battery
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
Application number
DE8383307671T
Other languages
English (en)
Inventor
Mitsutoshi C O Fujitsu L Ayano
Kiyoshi C O Fujitsu Li Shibuya
Shin-Ichi C O Fujitsu Lim Itou
Kenji C O Fujitsu Limi Takatou
Toshiro C O Fujitsu Limit Tojo
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE3377968D1 publication Critical patent/DE3377968D1/de
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
    • H04M19/008—Using DC/DC converters
    • 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
    • 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)
  • Interface Circuits In Exchanges (AREA)
DE8383307671T 1982-12-30 1983-12-16 Battery feed circuit for a telephone subscriber line Expired DE3377968D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57233825A JPS59125157A (ja) 1982-12-30 1982-12-30 給電回路

Publications (1)

Publication Number Publication Date
DE3377968D1 true DE3377968D1 (en) 1988-10-13

Family

ID=16961148

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383307671T Expired DE3377968D1 (en) 1982-12-30 1983-12-16 Battery feed circuit for a telephone subscriber line

Country Status (5)

Country Link
US (1) US4588860A (de)
EP (1) EP0116767B1 (de)
JP (1) JPS59125157A (de)
CA (1) CA1208385A (de)
DE (1) DE3377968D1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE433284B (sv) * 1982-09-17 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat
JPS61154347A (ja) * 1984-12-27 1986-07-14 Fujitsu Ltd 交換機の給電回路
EP0303091A3 (de) * 1987-08-13 1991-05-29 Siemens Aktiengesellschaft Schaltungsanordnung für eine als Baueinheit vorliegende Teilnehmeranschlussschaltung eines digitalen Zeitmultiplex-Fernmeldenetzes
US5329585A (en) * 1992-11-30 1994-07-12 Motorola, Inc. Subscriber line interface circuit for controlling AC and DC output impedance
US5528688A (en) * 1994-09-28 1996-06-18 At&T Corp. Telephone battery feed circuit including noise reduction circuit
DE19636954B4 (de) * 1996-09-11 2005-08-18 Infineon Technologies Ag Teilnehmerschaltung
US6157716A (en) * 1998-05-08 2000-12-05 Bell Atlantic Corporation Power feed circuit providing both on-hook and off-hook power for telephone subscriber loop

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1563802A (en) * 1975-11-10 1980-04-02 Post Office Electronic current feed circuit
US4007335A (en) * 1975-11-12 1977-02-08 Bell Telephone Laboratories, Incorporated Telephone line battery feed circuit
US4130735A (en) * 1977-04-11 1978-12-19 Lorain Products Corporation Loop extender
US4272656A (en) * 1979-04-05 1981-06-09 Precision Monolithics, Inc. Quasi-resistive battery feed for telephone circuits
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
US4292478A (en) * 1979-05-25 1981-09-29 Plessey Canada Limited Interface circuits
US4283604A (en) * 1979-06-04 1981-08-11 Tellabs, Inc. Current source circuits with common mode noise rejection
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
GB2071461B (en) * 1980-02-14 1984-01-25 Standard Telephones Cables Ltd Telephone line feed
US4315207A (en) * 1980-06-20 1982-02-09 Advanced Micro Devices, Inc. Current controlled battery feed circuit
US4359609A (en) * 1980-06-20 1982-11-16 Advanced Micro Devices, Inc. Circuit with feedback for controlling the impedance thereof
US4387273A (en) * 1980-08-25 1983-06-07 International Telephone And Telegraph Corporation Subscriber line interface circuit with impedance synthesizer
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
US4465967A (en) * 1981-01-28 1984-08-14 Hitachi, Ltd. Current supply circuit
US4476350A (en) * 1981-02-17 1984-10-09 Bell Telephone Laboratories, Incorporated Battery feed circuit
US4388500A (en) * 1981-02-27 1983-06-14 Wescom, Inc. Electronic hybrid
US4431868A (en) * 1981-07-09 1984-02-14 International Telephone And Telegraph Corporation Solid state telephone line interface circuit with ringing capability

Also Published As

Publication number Publication date
EP0116767A3 (en) 1986-05-14
JPH0468818B2 (de) 1992-11-04
EP0116767A2 (de) 1984-08-29
CA1208385A (en) 1986-07-22
US4588860A (en) 1986-05-13
EP0116767B1 (de) 1988-09-07
JPS59125157A (ja) 1984-07-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee