FR2451690A1 - Perfectionnements aux circuits de postes telephoniques a clavier - Google Patents

Perfectionnements aux circuits de postes telephoniques a clavier

Info

Publication number
FR2451690A1
FR2451690A1 FR7907701A FR7907701A FR2451690A1 FR 2451690 A1 FR2451690 A1 FR 2451690A1 FR 7907701 A FR7907701 A FR 7907701A FR 7907701 A FR7907701 A FR 7907701A FR 2451690 A1 FR2451690 A1 FR 2451690A1
Authority
FR
France
Prior art keywords
integrated circuit
telephone set
power consumption
call number
number memory
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
FR7907701A
Other languages
English (en)
Other versions
FR2451690B1 (fr
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.)
HORLOGERIE PHOTOGRAPH FSE
Original Assignee
HORLOGERIE PHOTOGRAPH FSE
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 HORLOGERIE PHOTOGRAPH FSE filed Critical HORLOGERIE PHOTOGRAPH FSE
Priority to FR7907701A priority Critical patent/FR2451690A1/fr
Publication of FR2451690A1 publication Critical patent/FR2451690A1/fr
Application granted granted Critical
Publication of FR2451690B1 publication Critical patent/FR2451690B1/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
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/272—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial
    • H04M1/2725—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial using electronic memories

Abstract

LA PRESENTE INVENTION CONCERNE UN PERFECTIONNEMENT AUX CIRCUITS DE POSTES TELEPHONIQUES A CLAVIER. SELON CE PERFECTIONNEMENT, LE CIRCUIT INTEGRE ASSURANT LES DIVERSES FONCTIONS LOGIQUES DE NUMEROTATION COMPREND UNE PREMIERE BORNE 100 ALIMENTANT SEULEMENT LA PARTIE DE MEMOIRE DU CIRCUIT ET UNE DEUXIEME BORNE 101 ALIMENTANT L'ENSEMBLE DU CIRCUIT. UN CONDENSATEUR 23 PERMET DE MAINTENIR UNE ALIMENTATION SUR LA BORNE 100 EN L'ABSENCE DE TENSION DE LIGNE. UN CIRCUIT DE TRIGGER 30 ET 31 PERMET DE COUPER UN TRANSISTOR 35 TRES PEU APRES UNE COUPURE D'ALIMENTATION DE LIGNE. APPLICATION AUX POSTES TELEPHONIQUES POUVANT FONCTIONNER SOUS DE TRES FAIBLES NIVEAUX DE TENSION DE LIGNE.
FR7907701A 1979-03-16 1979-03-16 Perfectionnements aux circuits de postes telephoniques a clavier Granted FR2451690A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7907701A FR2451690A1 (fr) 1979-03-16 1979-03-16 Perfectionnements aux circuits de postes telephoniques a clavier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7907701A FR2451690A1 (fr) 1979-03-16 1979-03-16 Perfectionnements aux circuits de postes telephoniques a clavier

Publications (2)

Publication Number Publication Date
FR2451690A1 true FR2451690A1 (fr) 1980-10-10
FR2451690B1 FR2451690B1 (fr) 1984-01-27

Family

ID=9223617

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7907701A Granted FR2451690A1 (fr) 1979-03-16 1979-03-16 Perfectionnements aux circuits de postes telephoniques a clavier

Country Status (1)

Country Link
FR (1) FR2451690A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2067689A5 (fr) * 1969-11-13 1971-08-20 Cit Alcatel
FR2114075A5 (fr) * 1970-11-16 1972-06-30 Cit Alcatel
DE2216099A1 (de) * 1972-04-01 1973-10-04 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur elektronischen waehlzeichenstromstossgabe in fernmeldeanlagen
FR2287813A1 (fr) * 1974-10-11 1976-05-07 Int Standard Electric Corp Circuit pour poste telephonique a clavier et signalisation par rupture de boucle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2067689A5 (fr) * 1969-11-13 1971-08-20 Cit Alcatel
FR2114075A5 (fr) * 1970-11-16 1972-06-30 Cit Alcatel
DE2216099A1 (de) * 1972-04-01 1973-10-04 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur elektronischen waehlzeichenstromstossgabe in fernmeldeanlagen
FR2287813A1 (fr) * 1974-10-11 1976-05-07 Int Standard Electric Corp Circuit pour poste telephonique a clavier et signalisation par rupture de boucle

Also Published As

Publication number Publication date
FR2451690B1 (fr) 1984-01-27

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BR Restoration of rights
ST Notification of lapse