FR2272551A1 - Telephone communication duration switching device - has delay circuit, power circuit and switch giving preset call time - Google Patents

Telephone communication duration switching device - has delay circuit, power circuit and switch giving preset call time

Info

Publication number
FR2272551A1
FR2272551A1 FR7418096A FR7418096A FR2272551A1 FR 2272551 A1 FR2272551 A1 FR 2272551A1 FR 7418096 A FR7418096 A FR 7418096A FR 7418096 A FR7418096 A FR 7418096A FR 2272551 A1 FR2272551 A1 FR 2272551A1
Authority
FR
France
Prior art keywords
circuit
power circuit
switch
delay circuit
switching device
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
FR7418096A
Other languages
English (en)
French (fr)
Other versions
FR2272551B1 (OSRAM
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.)
SAFAA
Original Assignee
SAFAA
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 SAFAA filed Critical SAFAA
Priority to FR7418096A priority Critical patent/FR2272551A1/fr
Publication of FR2272551A1 publication Critical patent/FR2272551A1/fr
Application granted granted Critical
Publication of FR2272551B1 publication Critical patent/FR2272551B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04M15/30—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 the meter or calculation of charges not being controlled from an exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Transceivers (AREA)
FR7418096A 1974-05-24 1974-05-24 Telephone communication duration switching device - has delay circuit, power circuit and switch giving preset call time Granted FR2272551A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7418096A FR2272551A1 (en) 1974-05-24 1974-05-24 Telephone communication duration switching device - has delay circuit, power circuit and switch giving preset call time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7418096A FR2272551A1 (en) 1974-05-24 1974-05-24 Telephone communication duration switching device - has delay circuit, power circuit and switch giving preset call time

Publications (2)

Publication Number Publication Date
FR2272551A1 true FR2272551A1 (en) 1975-12-19
FR2272551B1 FR2272551B1 (OSRAM) 1976-10-15

Family

ID=9139230

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7418096A Granted FR2272551A1 (en) 1974-05-24 1974-05-24 Telephone communication duration switching device - has delay circuit, power circuit and switch giving preset call time

Country Status (1)

Country Link
FR (1) FR2272551A1 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2136117C1 (ru) * 1998-09-29 1999-08-27 Спиридонов Александр Егорович Устройство защиты телефонной линии от короткого замыкания (варианты)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2136117C1 (ru) * 1998-09-29 1999-08-27 Спиридонов Александр Егорович Устройство защиты телефонной линии от короткого замыкания (варианты)

Also Published As

Publication number Publication date
FR2272551B1 (OSRAM) 1976-10-15

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse