FR2367389A1 - Standard parlophone avec portier electrique a service continu, muni de dispositif d'alarme - Google Patents

Standard parlophone avec portier electrique a service continu, muni de dispositif d'alarme

Info

Publication number
FR2367389A1
FR2367389A1 FR7729921A FR7729921A FR2367389A1 FR 2367389 A1 FR2367389 A1 FR 2367389A1 FR 7729921 A FR7729921 A FR 7729921A FR 7729921 A FR7729921 A FR 7729921A FR 2367389 A1 FR2367389 A1 FR 2367389A1
Authority
FR
France
Prior art keywords
preventing subsequent
door
user
relay
user preventing
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.)
Withdrawn
Application number
FR7729921A
Other languages
English (en)
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.)
ACET Srl
Original Assignee
ACET Srl
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 ACET Srl filed Critical ACET Srl
Publication of FR2367389A1 publication Critical patent/FR2367389A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

Standard parlophone, prévoyant la déconnexion automatique de chaque dispositif de secret de conversation, même en fin de conversation, et comprenant un circuit pour la coupure momentanée de la connexion entre amplificateur et ligne, pour la déconnexion du dispositif de secret de conversation, contrôlée par la déconnexion du parlophone, formé par deux transistors, les résistances et un condensateur. Application dans un standard parlophone avec portier électrique.
FR7729921A 1976-10-06 1977-10-05 Standard parlophone avec portier electrique a service continu, muni de dispositif d'alarme Withdrawn FR2367389A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2804876A IT1072987B (it) 1976-10-06 1976-10-06 Centralino citofonico con portiere elettrico,a servizio continuo,provvisto di dispositivo di allarme

Publications (1)

Publication Number Publication Date
FR2367389A1 true FR2367389A1 (fr) 1978-05-05

Family

ID=11222817

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7729921A Withdrawn FR2367389A1 (fr) 1976-10-06 1977-10-05 Standard parlophone avec portier electrique a service continu, muni de dispositif d'alarme

Country Status (2)

Country Link
FR (1) FR2367389A1 (fr)
IT (1) IT1072987B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455154A1 (fr) * 1979-04-24 1980-11-21 Urmet Spa Portier d'immeuble interphonique a poste exterieur, avec dispositif d'ouverture de porte electrique
EP0117251A2 (fr) * 1983-02-17 1984-08-29 STUZZI Radiotechnische Fabrik Spezialunternehmen für Magnettontechnik Viktor Stuzzi Gesellschaft m.b.H. Installation combinée d'appel et d'interphone pour portes
WO1993010620A1 (fr) * 1991-11-21 1993-05-27 Harris Corporation Circuit d'interface telephonique
ES2189654A1 (es) * 2001-07-05 2003-07-01 Alcad Sa Sistema de portero electroncio con secreto en las comunicaciones.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455154A1 (fr) * 1979-04-24 1980-11-21 Urmet Spa Portier d'immeuble interphonique a poste exterieur, avec dispositif d'ouverture de porte electrique
EP0117251A2 (fr) * 1983-02-17 1984-08-29 STUZZI Radiotechnische Fabrik Spezialunternehmen für Magnettontechnik Viktor Stuzzi Gesellschaft m.b.H. Installation combinée d'appel et d'interphone pour portes
EP0117251A3 (fr) * 1983-02-17 1985-10-30 STUZZI Radiotechnische Fabrik Spezialunternehmen für Magnettontechnik Viktor Stuzzi Gesellschaft m.b.H. Installation combinée d'appel et d'interphone pour portes
WO1993010620A1 (fr) * 1991-11-21 1993-05-27 Harris Corporation Circuit d'interface telephonique
US5315644A (en) * 1991-11-21 1994-05-24 Harris Corporation Telephone interface circuit
ES2189654A1 (es) * 2001-07-05 2003-07-01 Alcad Sa Sistema de portero electroncio con secreto en las comunicaciones.

Also Published As

Publication number Publication date
IT1072987B (it) 1985-04-13

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Legal Events

Date Code Title Description
ST Notification of lapse