IT1259009B - Metodo e dispositivo per l'adattamento delle impedenze della terminazione di utente e dell'attacco di utente alla impedenza caratteristica della linea telefonica di utente - Google Patents

Metodo e dispositivo per l'adattamento delle impedenze della terminazione di utente e dell'attacco di utente alla impedenza caratteristica della linea telefonica di utente

Info

Publication number
IT1259009B
IT1259009B ITMI921810A ITMI921810A IT1259009B IT 1259009 B IT1259009 B IT 1259009B IT MI921810 A ITMI921810 A IT MI921810A IT MI921810 A ITMI921810 A IT MI921810A IT 1259009 B IT1259009 B IT 1259009B
Authority
IT
Italy
Prior art keywords
user
characteristic impedance
attack
telephone line
adaptation
Prior art date
Application number
ITMI921810A
Other languages
English (en)
Italian (it)
Inventor
Bello Vincenzo Del
Original Assignee
Italtel Telematica
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 Italtel Telematica filed Critical Italtel Telematica
Priority to ITMI921810A priority Critical patent/IT1259009B/it
Publication of ITMI921810A0 publication Critical patent/ITMI921810A0/it
Priority to EP93202137A priority patent/EP0580249A2/en
Publication of ITMI921810A1 publication Critical patent/ITMI921810A1/it
Application granted granted Critical
Publication of IT1259009B publication Critical patent/IT1259009B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/005—Interface circuits for subscriber lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
ITMI921810A 1992-07-24 1992-07-24 Metodo e dispositivo per l'adattamento delle impedenze della terminazione di utente e dell'attacco di utente alla impedenza caratteristica della linea telefonica di utente IT1259009B (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITMI921810A IT1259009B (it) 1992-07-24 1992-07-24 Metodo e dispositivo per l'adattamento delle impedenze della terminazione di utente e dell'attacco di utente alla impedenza caratteristica della linea telefonica di utente
EP93202137A EP0580249A2 (en) 1992-07-24 1993-07-21 Method and device for the matching of the impedances of the subscriber termination and of the subscriber access to the characteristic impedance of the subscriber telephone line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI921810A IT1259009B (it) 1992-07-24 1992-07-24 Metodo e dispositivo per l'adattamento delle impedenze della terminazione di utente e dell'attacco di utente alla impedenza caratteristica della linea telefonica di utente

Publications (3)

Publication Number Publication Date
ITMI921810A0 ITMI921810A0 (it) 1992-07-24
ITMI921810A1 ITMI921810A1 (it) 1994-01-24
IT1259009B true IT1259009B (it) 1996-03-11

Family

ID=11363742

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI921810A IT1259009B (it) 1992-07-24 1992-07-24 Metodo e dispositivo per l'adattamento delle impedenze della terminazione di utente e dell'attacco di utente alla impedenza caratteristica della linea telefonica di utente

Country Status (2)

Country Link
EP (1) EP0580249A2 (OSRAM)
IT (1) IT1259009B (OSRAM)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9308168D0 (en) * 1993-04-20 1993-06-02 Madge Network Limited Impedance matching

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE419924B (sv) * 1980-07-01 1981-08-31 Ellemtel Utvecklings Ab Anordning for instellning av ett adaptivt digitalt balansfilter ingaende i en abonnentenhet
GB2173974B (en) * 1985-04-18 1988-09-07 Stc Plc Method of testing telephone subscribers lines
GB8528843D0 (en) * 1985-11-22 1985-12-24 British Telecomm Codec
JPS63153988A (ja) * 1986-12-17 1988-06-27 Nec Corp 加入者回路
SE457923B (sv) * 1987-06-15 1989-02-06 Ellemtel Utvecklings Ab Anordning foer att aastadkomma en styrbar linjeavslutningsimpedans

Also Published As

Publication number Publication date
ITMI921810A0 (it) 1992-07-24
ITMI921810A1 (it) 1994-01-24
EP0580249A3 (OSRAM) 1994-03-16
EP0580249A2 (en) 1994-01-26

Similar Documents

Publication Publication Date Title
Miki A relation between Bernoulli numbers
JPS62107533A (ja) 伝送回路網
EP0358488A3 (en) Equipment for and methods of locating the position of a fault on a power transmission line
DE69726147D1 (de) Führungsdrahtzuführungsgerät und verfahren
SE8503442D0 (sv) Data transmission system
US5282157A (en) Input impedance derived from a transfer network
DE69527747D1 (de) Umlenkschnittstelle zwischen zwei Fernsprechleitungen und einer Fernsprechstelle
IT1259009B (it) Metodo e dispositivo per l'adattamento delle impedenze della terminazione di utente e dell'attacco di utente alla impedenza caratteristica della linea telefonica di utente
DE69433610D1 (de) Einrichtung zum Anschliessen eines Endgerätes mit einer Teilnehmerfernsprechleitung
ATE118135T1 (de) Verfahren zum ermitteln der übertragungseigenschaften einer elektrischen leitung.
DE3063730D1 (en) Subscriber line circuit with ground key activation indication and insulation fault indication
DE69614484D1 (de) Überbrückbarer leistungsteiler
ATE161986T1 (de) Signalverarbeitungsschaltung mit geschalteten spannungsstromumsetzern
JPS56158554A (en) Balancing transmission matching and terminating method
WO2001037503A3 (en) Method and system for analytically computing and using an anspcm signal
Lipow et al. How slowly can quadrature formulas converge?
Raina The weyl fractional operator of a system of polynomials
WO2000016111A1 (en) Method and apparatus for measuring
JPS53138320A (en) Electronic musical instrument
JPS56152357A (en) Offset potential applying method
McMonagle Calculation of lithium lens impedance from measured waveforms
SE9704010D0 (sv) Improvements in, or relating to, near-echo suppression
JPS54157019A (en) Two wire-four wire conversion circuit
Mihai Complex analytic projective connections
FR2381278A2 (fr) Appareil destine a mesurer la circonference d'un objet de section cylindrique ou sensiblement, ou de toute autre section

Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960715