IT1168284B - Metodo ed apparecchiatura per l'alimentazione di corrente di un apparecchio d'abbonato da una centrale - Google Patents

Metodo ed apparecchiatura per l'alimentazione di corrente di un apparecchio d'abbonato da una centrale

Info

Publication number
IT1168284B
IT1168284B IT22958/83A IT2295883A IT1168284B IT 1168284 B IT1168284 B IT 1168284B IT 22958/83 A IT22958/83 A IT 22958/83A IT 2295883 A IT2295883 A IT 2295883A IT 1168284 B IT1168284 B IT 1168284B
Authority
IT
Italy
Prior art keywords
unit
equipment
current supply
subscription
central unit
Prior art date
Application number
IT22958/83A
Other languages
English (en)
Other versions
IT8322958A0 (it
Inventor
Nils Jackie Sundvall
Jan Hjalmar Johansson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of IT8322958A0 publication Critical patent/IT8322958A0/it
Application granted granted Critical
Publication of IT1168284B publication Critical patent/IT1168284B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/06—Current supply arrangements for telephone systems in which current supply sources at subordinate switching centres are charged from the main exchange
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
IT22958/83A 1982-09-22 1983-09-22 Metodo ed apparecchiatura per l'alimentazione di corrente di un apparecchio d'abbonato da una centrale IT1168284B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8205437A SE433285B (sv) 1982-09-22 1982-09-22 Anordning for strommatning av en abonnentapparat

Publications (2)

Publication Number Publication Date
IT8322958A0 IT8322958A0 (it) 1983-09-22
IT1168284B true IT1168284B (it) 1987-05-20

Family

ID=20347960

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22958/83A IT1168284B (it) 1982-09-22 1983-09-22 Metodo ed apparecchiatura per l'alimentazione di corrente di un apparecchio d'abbonato da una centrale

Country Status (10)

Country Link
US (1) US4631359A (it)
EP (1) EP0119245B1 (it)
JP (1) JPS59501651A (it)
KR (1) KR870000078B1 (it)
AU (1) AU563113B2 (it)
BR (1) BR8307526A (it)
DE (1) DE3365314D1 (it)
IT (1) IT1168284B (it)
SE (1) SE433285B (it)
WO (1) WO1984001250A1 (it)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1233580A (en) * 1984-05-26 1988-03-01 Kenji Takato Battery feed circuit for subscriber line
DE3428106A1 (de) * 1984-07-30 1986-02-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Teilnehmeranschlussschaltung
IT1214603B (it) * 1985-04-30 1990-01-18 Ates Componenti Elettron Circuito telefonico, integrabile monoliticamente, perl'alimentazione di una linea telefonica d'utente.
US4866768A (en) * 1985-06-26 1989-09-12 Siemens Corporate Research & Support, Inc. Station line interface circuit for a telecommunication network
US4727574A (en) * 1985-09-24 1988-02-23 Northern Telecom Limited Subscriber line interface circuit with improved d.c. balance
SE453626B (sv) * 1986-06-27 1988-02-15 Ericsson Telefon Ab L M Sett och anordning att strommata en telefonlinje for att vid begrensad batterispenning kunna overfora en odistorderad talsignal
SE465547B (sv) * 1990-02-01 1991-09-23 Ericsson Telefon Ab L M Saett och krets foer likstroemsmatning till en telefonlinje
SE465799B (sv) * 1990-03-15 1991-10-28 Ericsson Telefon Ab L M Anordning foer reducerad effektmatning till en abonnentlinje
EP0455894B1 (en) * 1990-05-11 1996-01-17 BELL TELEPHONE MANUFACTURING COMPANY Naamloze Vennootschap Impedance synthesis multiple loop using filtering means
US5511118A (en) * 1991-01-31 1996-04-23 Northern Telecom Limited Method of providing d.c. feed to a telephone line
EP0637161B1 (en) * 1993-07-29 1998-05-13 STMicroelectronics S.r.l. Integrated subscriber line interface circuit with smooth polarity-reversal
SE501975C2 (sv) * 1993-11-09 1995-07-03 Ericsson Telefon Ab L M Gränssnittskrets mellan fyrtrådsledning och tvåtrådsledning
SE9400186D0 (sv) * 1994-01-21 1994-01-21 Ericsson Telefon Ab L M Förfarande i ett telekommunikationssystem
SE507920C2 (sv) * 1996-11-08 1998-07-27 Ericsson Telefon Ab L M Linjekrets
US6700975B1 (en) 1996-11-08 2004-03-02 Telefonaktiebolaget Lm Ericsson (Publ) Subscriber line interface circuit
US7957522B2 (en) * 2006-03-06 2011-06-07 Winbond Electronics Corporation Programmable plain old telephone line impedance matching circuits

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7903665A (nl) * 1979-05-10 1980-11-12 Philips Nv Aansluitschakeling voor een telefoonlijn.
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
GB2064915B (en) * 1979-11-29 1984-03-21 Standard Telephones Cables Ltd Telephone line feed circuit
GB2065418B (en) * 1979-12-06 1984-02-15 Standard Telephones Cables Ltd Telephone line feed
US4315207A (en) * 1980-06-20 1982-02-09 Advanced Micro Devices, Inc. Current controlled battery feed circuit
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

Also Published As

Publication number Publication date
SE8205437L (sv) 1984-03-23
US4631359A (en) 1986-12-23
KR840006273A (ko) 1984-11-22
BR8307526A (pt) 1984-08-21
SE433285B (sv) 1984-05-14
SE8205437D0 (sv) 1982-09-22
AU563113B2 (en) 1987-06-25
EP0119245A1 (en) 1984-09-26
KR870000078B1 (ko) 1987-02-09
EP0119245B1 (en) 1986-08-13
AU2034583A (en) 1984-04-04
JPS59501651A (ja) 1984-09-13
IT8322958A0 (it) 1983-09-22
DE3365314D1 (en) 1986-09-18
WO1984001250A1 (en) 1984-03-29

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970918