FR2404975A1 - TELEPHONE TAX PULSE RECEIVER - Google Patents

TELEPHONE TAX PULSE RECEIVER

Info

Publication number
FR2404975A1
FR2404975A1 FR7825445A FR7825445A FR2404975A1 FR 2404975 A1 FR2404975 A1 FR 2404975A1 FR 7825445 A FR7825445 A FR 7825445A FR 7825445 A FR7825445 A FR 7825445A FR 2404975 A1 FR2404975 A1 FR 2404975A1
Authority
FR
France
Prior art keywords
receiver
reception
telephone
subscriber
circuit
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.)
Granted
Application number
FR7825445A
Other languages
French (fr)
Other versions
FR2404975B1 (en
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.)
Sodeco Saia AG
Societe des Compteurs de Geneve SODECO
Original Assignee
Sodeco Saia AG
Societe des Compteurs de Geneve SODECO
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 Sodeco Saia AG, Societe des Compteurs de Geneve SODECO filed Critical Sodeco Saia AG
Publication of FR2404975A1 publication Critical patent/FR2404975A1/en
Application granted granted Critical
Publication of FR2404975B1 publication Critical patent/FR2404975B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • H04M17/023—Circuit arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Meter Arrangements (AREA)
  • Prepayment Telephone Systems (AREA)

Abstract

Récepteur d'impulsions de taxation téléphoniques pour station d'abonné ou station à pré-paiement. Le récepteur comprend un circuit de dérivation 2 pour la réception des impulsions à haute fréquence et un circuit récepteur 1, 17, 5, 6 pour la réception d'impulsions de taxation à basse fréquence, ce circuit comprenant un filtre 1 reliant symétriquement les fils de la ligne d'abonné à la terre Les fils de ligne sont couplés inductivement par un transformateur de symétrie 4 associé à un redresseur 43 et un amplificateur 44 assurant la réception des impulsions basse fréquence même lorsque l'un des fils de ligne est mis à la terre. Le récepteur est destiné aux stations téléphoniques d'abonné et aux stations à pré-paiement.Receiver of telephone charging pulses for subscriber station or prepayment station. The receiver comprises a branch circuit 2 for the reception of the high frequency pulses and a receiver circuit 1, 17, 5, 6 for the reception of low frequency charging pulses, this circuit comprising a filter 1 symmetrically connecting the wires of the subscriber line to earth The line wires are inductively coupled by a symmetry transformer 4 associated with a rectifier 43 and an amplifier 44 ensuring the reception of low frequency pulses even when one of the line wires is put to the ground. Earth. The receiver is intended for subscriber telephone stations and prepayment stations.

FR7825445A 1977-09-30 1978-08-30 TELEPHONE TAX PULSE RECEIVER Granted FR2404975A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1197177A CH622654A5 (en) 1977-09-30 1977-09-30

Publications (2)

Publication Number Publication Date
FR2404975A1 true FR2404975A1 (en) 1979-04-27
FR2404975B1 FR2404975B1 (en) 1982-06-25

Family

ID=4378612

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7825445A Granted FR2404975A1 (en) 1977-09-30 1978-08-30 TELEPHONE TAX PULSE RECEIVER

Country Status (9)

Country Link
AT (1) AT364392B (en)
BE (1) BE870158A (en)
CH (1) CH622654A5 (en)
DE (1) DE2833322A1 (en)
DK (1) DK432578A (en)
FR (1) FR2404975A1 (en)
GB (1) GB2005111A (en)
NL (1) NL7809721A (en)
NO (1) NO783303L (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551604B1 (en) * 1983-09-06 1985-10-25 Thomson Csf Mat Tel TELEXING DEVICE FOR ELECTRONIC TELEPHONE TERMINAL
JPS62220054A (en) * 1986-03-20 1987-09-28 Fujitsu Ltd Receiver for charging signal of central office line trunk circuit
GB8703066D0 (en) * 1987-02-11 1987-03-18 Gen Electric Co Plc Signal converter unit
FR2648655B1 (en) * 1989-06-19 1995-08-18 Alcatel Business Systems SIGNAL DETECTOR, OF TELEPHONE TAX TYPE, PARTICULARLY FOR TELEPHONE TRUNK
NL8902617A (en) * 1989-10-23 1991-05-16 Nederland Ptt METHOD AND APPARATUS FOR CONNECTING ON THE ONE PART A DEVICE CONNECTED WITH AN EARTHED SYSTEM WITH AN EXTENSION OF A SINGLE OR MULTIPHASE ELECTRICITY NETWORK WITH RESPECT TO THE OTHER CONNECTION. CONNECTIONS THE SMALLEST IMPEDANCE TO EARTH.
GB2266819A (en) * 1992-05-07 1993-11-10 British Telecomm Pulse detection
DE19502448C2 (en) * 1995-01-26 1998-07-30 Gramespacher Max H Third-party use detector for connection to a telephone line

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH324913A (en) * 1955-09-20 1957-10-15 Sodeco Compteurs De Geneve Amplifier device for telephone system
CH472816A (en) * 1967-06-07 1969-05-15 Siemens Ag Circuit arrangement for charge meters at stations in telecommunications, in particular telephone systems
DE1563825A1 (en) * 1966-08-10 1970-05-14 Stotz Kontakt Gmbh Residual current circuit breaker
CH532873A (en) * 1971-06-21 1973-01-15 Sodeco Compteurs De Geneve Billing meters for telephone systems with automatic billing
CH540616A (en) * 1972-01-10 1973-08-15 Sodeco Compteurs De Geneve Circuit arrangement for a telephone charge indicator
DE2337107B1 (en) * 1973-07-20 1974-12-05 Siemens Ag Receiving device for AC voltage pulses transmitted via telecommunications, especially telephone lines, e.g. 16 kHz counting pulses
DE2508849A1 (en) * 1974-03-01 1975-09-04 Ite Imperial Corp Earth-fault sensor with sync. detector - has oper. amplif. coupled to diff. transformer making cut-out point independ. of line capacitance
DE2558680A1 (en) * 1975-05-09 1976-11-18 Ind Politecnica Meridionale I DEVICE FOR SAVING AND PRINTING THE CALLED TELEPHONE CONNECTION AND THE NUMBER OF CHARGE UNITS

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH324913A (en) * 1955-09-20 1957-10-15 Sodeco Compteurs De Geneve Amplifier device for telephone system
DE1563825A1 (en) * 1966-08-10 1970-05-14 Stotz Kontakt Gmbh Residual current circuit breaker
CH472816A (en) * 1967-06-07 1969-05-15 Siemens Ag Circuit arrangement for charge meters at stations in telecommunications, in particular telephone systems
CH532873A (en) * 1971-06-21 1973-01-15 Sodeco Compteurs De Geneve Billing meters for telephone systems with automatic billing
CH540616A (en) * 1972-01-10 1973-08-15 Sodeco Compteurs De Geneve Circuit arrangement for a telephone charge indicator
DE2337107B1 (en) * 1973-07-20 1974-12-05 Siemens Ag Receiving device for AC voltage pulses transmitted via telecommunications, especially telephone lines, e.g. 16 kHz counting pulses
DE2508849A1 (en) * 1974-03-01 1975-09-04 Ite Imperial Corp Earth-fault sensor with sync. detector - has oper. amplif. coupled to diff. transformer making cut-out point independ. of line capacitance
DE2558680A1 (en) * 1975-05-09 1976-11-18 Ind Politecnica Meridionale I DEVICE FOR SAVING AND PRINTING THE CALLED TELEPHONE CONNECTION AND THE NUMBER OF CHARGE UNITS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/75 *

Also Published As

Publication number Publication date
NL7809721A (en) 1979-04-03
DK432578A (en) 1979-03-31
FR2404975B1 (en) 1982-06-25
CH622654A5 (en) 1981-04-15
GB2005111A (en) 1979-04-11
AT364392B (en) 1981-10-12
ATA532078A (en) 1981-03-15
NO783303L (en) 1979-04-02
BE870158A (en) 1979-01-02
DE2833322A1 (en) 1979-04-12

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Legal Events

Date Code Title Description
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