FR2195130A1 - - Google Patents

Info

Publication number
FR2195130A1
FR2195130A1 FR7327354A FR7327354A FR2195130A1 FR 2195130 A1 FR2195130 A1 FR 2195130A1 FR 7327354 A FR7327354 A FR 7327354A FR 7327354 A FR7327354 A FR 7327354A FR 2195130 A1 FR2195130 A1 FR 2195130A1
Authority
FR
France
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
FR7327354A
Other languages
French (fr)
Other versions
FR2195130B1 (ja
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2195130A1 publication Critical patent/FR2195130A1/fr
Application granted granted Critical
Publication of FR2195130B1 publication Critical patent/FR2195130B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
FR7327354A 1972-08-03 1973-07-26 Expired FR2195130B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722238225 DE2238225A1 (de) 1972-08-03 1972-08-03 Betriebsschaltung eines telefonapparates

Publications (2)

Publication Number Publication Date
FR2195130A1 true FR2195130A1 (ja) 1974-03-01
FR2195130B1 FR2195130B1 (ja) 1976-11-12

Family

ID=5852576

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7327354A Expired FR2195130B1 (ja) 1972-08-03 1973-07-26

Country Status (4)

Country Link
DE (1) DE2238225A1 (ja)
ES (1) ES417510A1 (ja)
FR (1) FR2195130B1 (ja)
GB (1) GB1398860A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291656A1 (fr) * 1974-11-14 1976-06-11 Telic Clavier d'appel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1110111B (it) * 1979-01-12 1985-12-23 Acet Srl Impianto citofonico a portiere elettrico a due fili,suscettibile di utilizzare un pressistente impianto a campanello,senza necessita' di ulteriori linee di alimentazione
DE3408146A1 (de) * 1984-03-06 1985-09-12 Hagenuk GmbH, 2300 Kiel Schaltungsanordnung fuer eine fernsprechteilnehmerstation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849539A (en) * 1956-12-13 1958-08-26 Bell Telephone Labor Inc Magnetic core circuits
DE1145233B (de) * 1960-10-04 1963-03-14 Arnstadt Fernmeldewerk Stromstosssender, insbesondere Nummern-schalter fuer Fernsprechapparate
DE1229154B (de) * 1965-04-30 1966-11-24 Maack Elmewe Schaltungsanordnung fuer Gebuehrenzaehler in Fernsprechteilnehmerstationen
US3488450A (en) * 1966-12-02 1970-01-06 American Telephone & Telegraph Sender for transmitting trains of pulses
CH491562A (de) * 1969-10-14 1970-05-31 Autophon Ag Schaltungsanordnung für Telephonteilnehmerstationen mit einer Einrichtung zur Abgabe von Tonfrequenz-Wahlsignalen
DE2043611A1 (de) * 1970-09-03 1972-03-09 Tn Ladeschaltung für Kondensatoren am Ende einer, nur geringe Leistung über tragenden Leitung in Fernmeldeanlagen
FR2153982A5 (ja) * 1971-09-13 1973-05-04 Int Standard Electric Corp
FR2158926A5 (ja) * 1971-10-29 1973-06-15 Sodeco Compteurs De Geneve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849539A (en) * 1956-12-13 1958-08-26 Bell Telephone Labor Inc Magnetic core circuits
DE1145233B (de) * 1960-10-04 1963-03-14 Arnstadt Fernmeldewerk Stromstosssender, insbesondere Nummern-schalter fuer Fernsprechapparate
DE1229154B (de) * 1965-04-30 1966-11-24 Maack Elmewe Schaltungsanordnung fuer Gebuehrenzaehler in Fernsprechteilnehmerstationen
US3488450A (en) * 1966-12-02 1970-01-06 American Telephone & Telegraph Sender for transmitting trains of pulses
CH491562A (de) * 1969-10-14 1970-05-31 Autophon Ag Schaltungsanordnung für Telephonteilnehmerstationen mit einer Einrichtung zur Abgabe von Tonfrequenz-Wahlsignalen
DE2043611A1 (de) * 1970-09-03 1972-03-09 Tn Ladeschaltung für Kondensatoren am Ende einer, nur geringe Leistung über tragenden Leitung in Fernmeldeanlagen
FR2153982A5 (ja) * 1971-09-13 1973-05-04 Int Standard Electric Corp
FR2158926A5 (ja) * 1971-10-29 1973-06-15 Sodeco Compteurs De Geneve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291656A1 (fr) * 1974-11-14 1976-06-11 Telic Clavier d'appel

Also Published As

Publication number Publication date
DE2238225A1 (de) 1974-02-14
FR2195130B1 (ja) 1976-11-12
GB1398860A (en) 1975-06-26
ES417510A1 (es) 1976-03-01

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Legal Events

Date Code Title Description
ST Notification of lapse