ES8202221A1 - Perfeccionamientos en las disposiciones circuitales capaces de medir las caracteristicas electricas de lineas telefoni- cas de los usuarios - Google Patents

Perfeccionamientos en las disposiciones circuitales capaces de medir las caracteristicas electricas de lineas telefoni- cas de los usuarios

Info

Publication number
ES8202221A1
ES8202221A1 ES499528A ES499528A ES8202221A1 ES 8202221 A1 ES8202221 A1 ES 8202221A1 ES 499528 A ES499528 A ES 499528A ES 499528 A ES499528 A ES 499528A ES 8202221 A1 ES8202221 A1 ES 8202221A1
Authority
ES
Spain
Prior art keywords
measuring
circuit arrangement
telephone lines
phase
user telephone
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
ES499528A
Other languages
English (en)
Other versions
ES499528A0 (es
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.)
Italtel SpA
Original Assignee
Italtel SpA
Italtel Societa Italiana Telecomunicazioni SpA
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 SpA, Italtel Societa Italiana Telecomunicazioni SpA filed Critical Italtel SpA
Publication of ES8202221A1 publication Critical patent/ES8202221A1/es
Publication of ES499528A0 publication Critical patent/ES499528A0/es
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

DISPOSICION CIRCUITAL CAPAZ DE MEDIR LA CARACTERISTICAS ELECTRICAS DE LAS LINEAS TELEFONICAS DE LOS USUARIOS. COMPRENDE PRIMEROS MEDIOS (PM) CAPACES DE GENERAR UNA PRIMERA SEÑAL (FO), CUYA FRECUENCIA SEA UNA FRACCION DE LA FRECUENCIA DE LA RED; SEGUNDOS MEDIOS (SM) ALIMENTADOS POR LA PRIMERA SEÑAL (FO), CAPACES DE PROPORCIONAR UA SEGUNDA SEÑAL DE FASE (SM), CUYO NIVEL ES PROPORCIONAL A LA CORRIENTE QUE CIRCULA EN LA LINEA TELEFONICA DEL USUARIO; UN PRIMER DISPOSITIVO DE INTERCAMBIO (DS1) CAPAZ DE CONECTAR LA SALIDA DE LOS SEGUNDOS MEDIOS (SM) A LOS CONDUCTORES (A, B), DE LA LINEA DEL USUARIO.
ES499528A 1980-01-31 1981-01-30 Perfeccionamientos en las disposiciones circuitales capaces de medir las caracteristicas electricas de lineas telefoni- cas de los usuarios Granted ES499528A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8019584A IT1212405B (it) 1980-01-31 1980-01-31 Disposizione circuitale atta a misurare le caratteristiche elettriche delle linee telefoniche d'utente.

Publications (2)

Publication Number Publication Date
ES8202221A1 true ES8202221A1 (es) 1982-02-01
ES499528A0 ES499528A0 (es) 1982-02-01

Family

ID=11159237

Family Applications (1)

Application Number Title Priority Date Filing Date
ES499528A Granted ES499528A0 (es) 1980-01-31 1981-01-30 Perfeccionamientos en las disposiciones circuitales capaces de medir las caracteristicas electricas de lineas telefoni- cas de los usuarios

Country Status (6)

Country Link
EP (1) EP0033858A1 (es)
BR (1) BR8100533A (es)
ES (1) ES499528A0 (es)
IE (1) IE810184L (es)
IT (1) IT1212405B (es)
PT (1) PT72412B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0744604B2 (ja) * 1985-05-17 1995-05-15 日本電気株式会社 加入者線監視回路
GB2195512A (en) * 1986-09-10 1988-04-07 Emp Systems Limited Telephone line tester
FR2616228B1 (fr) * 1987-06-04 1989-09-08 Merlin Gerin Dispositif de controle et de mesure de l'isolement d'un reseau electrique
ATE166724T1 (de) * 1992-03-31 1998-06-15 Siemens Ag Verfahren zum ermitteln einer elektrischen kenngrösse

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113998A (en) * 1975-10-14 1978-09-12 Teradyne, Inc. Testing electrically conductive lines to determine electrical characteristics thereof

Also Published As

Publication number Publication date
IT8019584A0 (it) 1980-01-31
IE810184L (en) 1981-07-31
PT72412B (en) 1982-03-12
ES499528A0 (es) 1982-02-01
EP0033858A1 (en) 1981-08-19
IT1212405B (it) 1989-11-22
BR8100533A (pt) 1981-08-18
PT72412A (en) 1981-02-01

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