FR2239828A1 - - Google Patents

Info

Publication number
FR2239828A1
FR2239828A1 FR7426888A FR7426888A FR2239828A1 FR 2239828 A1 FR2239828 A1 FR 2239828A1 FR 7426888 A FR7426888 A FR 7426888A FR 7426888 A FR7426888 A FR 7426888A FR 2239828 A1 FR2239828 A1 FR 2239828A1
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
FR7426888A
Other languages
French (fr)
Other versions
FR2239828B1 (enrdf_load_html_response
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 FR2239828A1 publication Critical patent/FR2239828A1/fr
Application granted granted Critical
Publication of FR2239828B1 publication Critical patent/FR2239828B1/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
    • 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)
FR7426888A 1973-08-03 1974-08-02 Expired FR2239828B1 (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES417537A ES417537A1 (es) 1973-08-03 1973-08-03 Mejoras en los circuitos de llamada por pulsador para apa- ratos telefonicos.

Publications (2)

Publication Number Publication Date
FR2239828A1 true FR2239828A1 (enrdf_load_html_response) 1975-02-28
FR2239828B1 FR2239828B1 (enrdf_load_html_response) 1978-02-17

Family

ID=8464781

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7426888A Expired FR2239828B1 (enrdf_load_html_response) 1973-08-03 1974-08-02

Country Status (3)

Country Link
ES (1) ES417537A1 (enrdf_load_html_response)
FR (1) FR2239828B1 (enrdf_load_html_response)
GB (1) GB1440542A (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027302A1 (en) * 1979-10-10 1981-04-22 Suchi Chiou Interface circuits for touch-pulse telephones
FR2505586A1 (fr) * 1981-05-05 1982-11-12 Thomson Csf Mat Tel Poste telephonique a clavier
FR2508744A1 (fr) * 1981-06-26 1982-12-31 Thomson Csf Mat Tel Poste telephonique a clavier et a ecoute amplifiee

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541903C3 (de) * 1975-09-19 1979-09-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für über ihre AnschluBleitiuigen gespeiste Teilnehmerstationen mit Impulstastwahl in Fernmelde-, insbesondere Fernsprechanlagen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027302A1 (en) * 1979-10-10 1981-04-22 Suchi Chiou Interface circuits for touch-pulse telephones
FR2505586A1 (fr) * 1981-05-05 1982-11-12 Thomson Csf Mat Tel Poste telephonique a clavier
FR2508744A1 (fr) * 1981-06-26 1982-12-31 Thomson Csf Mat Tel Poste telephonique a clavier et a ecoute amplifiee

Also Published As

Publication number Publication date
FR2239828B1 (enrdf_load_html_response) 1978-02-17
GB1440542A (en) 1976-06-23
ES417537A1 (es) 1976-03-01
AU7177074A (en) 1976-01-29

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Legal Events

Date Code Title Description
ST Notification of lapse