FR2291656A1 - Clavier d'appel - Google Patents

Clavier d'appel

Info

Publication number
FR2291656A1
FR2291656A1 FR7437585A FR7437585A FR2291656A1 FR 2291656 A1 FR2291656 A1 FR 2291656A1 FR 7437585 A FR7437585 A FR 7437585A FR 7437585 A FR7437585 A FR 7437585A FR 2291656 A1 FR2291656 A1 FR 2291656A1
Authority
FR
France
Prior art keywords
circuit
telephone
keyboard
equipment
additional supply
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
FR7437585A
Other languages
English (en)
French (fr)
Other versions
FR2291656B1 (enExample
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.)
ALE International SAS
Original Assignee
Telic Alcatel SA
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 Telic Alcatel SA filed Critical Telic Alcatel SA
Priority to FR7437585A priority Critical patent/FR2291656A1/fr
Publication of FR2291656A1 publication Critical patent/FR2291656A1/fr
Application granted granted Critical
Publication of FR2291656B1 publication Critical patent/FR2291656B1/fr
Granted 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)
  • Prepayment Telephone Systems (AREA)
FR7437585A 1974-11-14 1974-11-14 Clavier d'appel Granted FR2291656A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7437585A FR2291656A1 (fr) 1974-11-14 1974-11-14 Clavier d'appel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7437585A FR2291656A1 (fr) 1974-11-14 1974-11-14 Clavier d'appel

Publications (2)

Publication Number Publication Date
FR2291656A1 true FR2291656A1 (fr) 1976-06-11
FR2291656B1 FR2291656B1 (enExample) 1977-03-25

Family

ID=9144933

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7437585A Granted FR2291656A1 (fr) 1974-11-14 1974-11-14 Clavier d'appel

Country Status (1)

Country Link
FR (1) FR2291656A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526252A1 (fr) * 1982-05-03 1983-11-04 Constr Telephoniques Circuit de commande du courant d'une ligne de transmission

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749847A (en) * 1970-10-06 1973-07-31 Siemens Spa Italiana Device for blocking toll calls from subscriber telephones
DE2210852A1 (de) * 1972-03-07 1973-09-13 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur waehlzeichenstromstossgabe in fernmeldeanlagen
DE2216099A1 (de) * 1972-04-01 1973-10-04 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur elektronischen waehlzeichenstromstossgabe in fernmeldeanlagen
FR2195130A1 (enExample) * 1972-08-03 1974-03-01 Int Standard Electric Corp
FR2212725A1 (enExample) * 1973-01-03 1974-07-26 Sits Soc It Telecom Siemens

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749847A (en) * 1970-10-06 1973-07-31 Siemens Spa Italiana Device for blocking toll calls from subscriber telephones
DE2210852A1 (de) * 1972-03-07 1973-09-13 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur waehlzeichenstromstossgabe in fernmeldeanlagen
DE2216099A1 (de) * 1972-04-01 1973-10-04 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur elektronischen waehlzeichenstromstossgabe in fernmeldeanlagen
FR2195130A1 (enExample) * 1972-08-03 1974-03-01 Int Standard Electric Corp
FR2212725A1 (enExample) * 1973-01-03 1974-07-26 Sits Soc It Telecom Siemens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PUBLICATION US "ELECTRONICS" VOL. 47, NO. 7, 4 AVRIL 1974, PAGES 10E A 11E. ARTICLE "FRANCE SEEN OPTING FOR PUSH-BUTTON PULSE-CODE PHONES". AUTEUR: SHEPHERD.) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526252A1 (fr) * 1982-05-03 1983-11-04 Constr Telephoniques Circuit de commande du courant d'une ligne de transmission

Also Published As

Publication number Publication date
FR2291656B1 (enExample) 1977-03-25

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Legal Events

Date Code Title Description
ST Notification of lapse