IT1134634B - Disposizione di alimentazione di linea per una linea di abbonato telefonico - Google Patents

Disposizione di alimentazione di linea per una linea di abbonato telefonico

Info

Publication number
IT1134634B
IT1134634B IT26509/80A IT2650980A IT1134634B IT 1134634 B IT1134634 B IT 1134634B IT 26509/80 A IT26509/80 A IT 26509/80A IT 2650980 A IT2650980 A IT 2650980A IT 1134634 B IT1134634 B IT 1134634B
Authority
IT
Italy
Prior art keywords
line
power supply
telephone subscription
line power
telephone
Prior art date
Application number
IT26509/80A
Other languages
English (en)
Other versions
IT8026509A0 (it
Inventor
Anthony William Sweet
Original Assignee
Standard Telephones Cables 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 Standard Telephones Cables Ltd filed Critical Standard Telephones Cables Ltd
Publication of IT8026509A0 publication Critical patent/IT8026509A0/it
Application granted granted Critical
Publication of IT1134634B publication Critical patent/IT1134634B/it

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
IT26509/80A 1979-12-06 1980-12-09 Disposizione di alimentazione di linea per una linea di abbonato telefonico IT1134634B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7942104A GB2065418B (en) 1979-12-06 1979-12-06 Telephone line feed

Publications (2)

Publication Number Publication Date
IT8026509A0 IT8026509A0 (it) 1980-12-09
IT1134634B true IT1134634B (it) 1986-08-13

Family

ID=10509653

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26509/80A IT1134634B (it) 1979-12-06 1980-12-09 Disposizione di alimentazione di linea per una linea di abbonato telefonico

Country Status (14)

Country Link
US (1) US4431869A (it)
JP (1) JPS56100562A (it)
AU (1) AU542803B2 (it)
BE (1) BE890403R (it)
DE (1) DE3043907A1 (it)
EG (1) EG14711A (it)
FR (1) FR2471709A1 (it)
GB (1) GB2065418B (it)
IT (1) IT1134634B (it)
NL (1) NL8006572A (it)
NZ (1) NZ195746A (it)
PT (1) PT72170B (it)
SE (1) SE8008417L (it)
ZA (1) ZA807497B (it)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057009B1 (en) * 1981-01-28 1985-07-03 Hitachi, Ltd. Current supply circuit
CA1157175A (en) * 1981-02-20 1983-11-15 Mitel Corporation Power saving line circuit
SE431704B (sv) * 1982-07-06 1984-02-20 Ericsson Telefon Ab L M Forfarande vid strommatning av en abonnentapparat fran en telefonvexel
SE433284B (sv) * 1982-09-17 1984-05-14 Ericsson Telefon Ab L M Anordning for strommatning av en abonnentapparat
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
US4577064A (en) * 1983-04-29 1986-03-18 Gte Lenkurt Incorporated Auto-balance circuit for battery feed in a telephone circuit
US4532381A (en) * 1984-02-13 1985-07-30 Northern Telecom Limited Active impedance line feed circuit
US4602130A (en) * 1984-10-15 1986-07-22 Itt Corporation Dual voltage source feed circuit configuration for a telephone line circuit
CA1231480A (en) * 1985-03-15 1988-01-12 John A. Barsellotti Constant current line circuit
CA1233583A (en) * 1985-06-18 1988-03-01 Francis Y. Hung Protection arrangement for a telephone subscriber line interface circuit
US4953160A (en) * 1988-02-24 1990-08-28 Integrated Network Corporation Digital data over voice communication
US5050210A (en) * 1989-03-10 1991-09-17 Reliance Comm/Tec Corporation Metallic current limiter
EP0450884B1 (en) * 1990-04-04 1996-06-12 Seiscor Technologies, Inc. A subscriber line interface circuit providing regulated current
US5103387A (en) * 1991-01-31 1992-04-07 Northern Telecom Limited High voltage converter
US5461671A (en) * 1992-06-05 1995-10-24 Murata Mfg. Co., Ltd. Telephone line power utility circuit
US5515433A (en) * 1994-08-30 1996-05-07 Reltec Corporation Resistance forward telephone line feed circuit
EP0876726A2 (en) * 1996-09-26 1998-11-11 Koninklijke Philips Electronics N.V. Power supply circuit, telecommunication device and method for multiple dc slope power management
WO1998049782A2 (en) * 1997-04-29 1998-11-05 Koninklijke Philips Electronics N.V. A wire bound telecommunications device and a power supply circuit
US6480510B1 (en) * 1998-07-28 2002-11-12 Serconet Ltd. Local area network of serial intelligent cells
US6956826B1 (en) 1999-07-07 2005-10-18 Serconet Ltd. Local area network for distributing data communication, sensing and control signals
US6690677B1 (en) 1999-07-20 2004-02-10 Serconet Ltd. Network for telephony and data communication
US6549616B1 (en) * 2000-03-20 2003-04-15 Serconet Ltd. Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets
FR2819364B1 (fr) * 2001-01-08 2003-04-11 Cit Alcatel Dispositif de telealementation d'uin terminal dans un reseau de telecommunication, concentrateur, et repeteur comportant un tel dispositif
IL154234A (en) * 2003-01-30 2010-12-30 Mosaid Technologies Inc Method and system for providing dc power on local telephone lines
IL159838A0 (en) 2004-01-13 2004-06-20 Yehuda Binder Information device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098212A (it) * 1973-12-26 1975-08-05
NL7402575A (nl) * 1974-02-26 1975-08-28 Philips Nv Elektronisch telefoontoestel.
CH586983A5 (it) * 1974-12-23 1977-04-15 Ibm
US4037066A (en) * 1975-03-20 1977-07-19 Lorain Products Corporation Repeater for transmission lines
US4048552A (en) * 1976-02-12 1977-09-13 Bell Telephone Laboratories, Incorporated Digitally regulated inverter
FR2377286A1 (fr) * 1977-01-18 1978-08-11 Kleber Colombes Pneumatique
FR2404976A1 (fr) * 1977-09-30 1979-04-27 Materiel Telephonique Circuit d'alimentation de ligne
NL7802423A (nl) * 1978-03-06 1979-09-10 Philips Nv Voedingsinrichting voor een lijnstroomloop.
US4241239A (en) * 1978-02-24 1980-12-23 International Telephone And Telegraph Corporation Fluxbucking line transformer with electronic equivalent line terminating impedance
DE2850905C2 (de) * 1978-11-24 1985-11-14 Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Schaltungsanordnung zur Speisung einer Teilnehmerendeinrichtung
US4268723A (en) * 1979-09-04 1981-05-19 Western Electric Company Circuits and methods for initializing the loop current of a telephone set

Also Published As

Publication number Publication date
BE890403R (fr) 1982-01-18
NZ195746A (en) 1984-10-19
DE3043907A1 (de) 1981-06-11
GB2065418A (en) 1981-06-24
NL8006572A (nl) 1981-07-01
FR2471709A1 (fr) 1981-06-19
PT72170B (en) 1982-01-05
ZA807497B (en) 1981-11-25
GB2065418B (en) 1984-02-15
AU6501680A (en) 1981-06-11
AU542803B2 (en) 1985-03-14
IT8026509A0 (it) 1980-12-09
US4431869A (en) 1984-02-14
JPS56100562A (en) 1981-08-12
SE8008417L (sv) 1981-06-07
PT72170A (en) 1981-01-01
EG14711A (en) 1985-03-31
FR2471709B1 (it) 1984-12-28

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