IT1165924B - Sistema a due soli fili per il collegamento fra posto esterno ed i derivati negli impianti citofonici - Google Patents

Sistema a due soli fili per il collegamento fra posto esterno ed i derivati negli impianti citofonici

Info

Publication number
IT1165924B
IT1165924B IT07222/79A IT722279A IT1165924B IT 1165924 B IT1165924 B IT 1165924B IT 07222/79 A IT07222/79 A IT 07222/79A IT 722279 A IT722279 A IT 722279A IT 1165924 B IT1165924 B IT 1165924B
Authority
IT
Italy
Prior art keywords
derivatives
connection
wire system
door phone
phone systems
Prior art date
Application number
IT07222/79A
Other languages
English (en)
Other versions
IT7907222A0 (it
Inventor
Giancarlo Vospini
Mauro Stani
Original Assignee
Lt Terraneo Spa
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 Lt Terraneo Spa filed Critical Lt Terraneo Spa
Priority to IT07222/79A priority Critical patent/IT1165924B/it
Publication of IT7907222A0 publication Critical patent/IT7907222A0/it
Priority to DE19803023988 priority patent/DE3023988A1/de
Application granted granted Critical
Publication of IT1165924B publication Critical patent/IT1165924B/it

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)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
IT07222/79A 1979-12-19 1979-12-19 Sistema a due soli fili per il collegamento fra posto esterno ed i derivati negli impianti citofonici IT1165924B (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT07222/79A IT1165924B (it) 1979-12-19 1979-12-19 Sistema a due soli fili per il collegamento fra posto esterno ed i derivati negli impianti citofonici
DE19803023988 DE3023988A1 (de) 1979-12-19 1980-06-26 Gegensprechanlage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT07222/79A IT1165924B (it) 1979-12-19 1979-12-19 Sistema a due soli fili per il collegamento fra posto esterno ed i derivati negli impianti citofonici

Publications (2)

Publication Number Publication Date
IT7907222A0 IT7907222A0 (it) 1979-12-19
IT1165924B true IT1165924B (it) 1987-04-29

Family

ID=11124848

Family Applications (1)

Application Number Title Priority Date Filing Date
IT07222/79A IT1165924B (it) 1979-12-19 1979-12-19 Sistema a due soli fili per il collegamento fra posto esterno ed i derivati negli impianti citofonici

Country Status (2)

Country Link
DE (1) DE3023988A1 (it)
IT (1) IT1165924B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569069B1 (fr) * 1984-08-09 1987-03-06 Pellerin Christian Systeme de transmission de signaux destines notamment a la surveillance d'un ensemble de locaux a proteger
FR2620286B1 (fr) * 1987-09-04 1994-07-22 Kaddour Zanouda Portier electronique pour un immeuble d'habitation a plusieurs appartements
DE4116935C2 (de) * 1991-05-24 1993-09-30 Stewing Gmbh & Co Kg Klingelanlage für Wohnhäuser, insbesondere Mehrfamilienhäuser, Altbauten o. dgl.
DE4236565C2 (de) * 1992-10-29 1997-01-30 Deutsche Telekom Ag Türfreisprechanlage
DE19704026B4 (de) * 1997-02-04 2007-12-27 Deutsche Telekom Ag Türfreisprechanlage
DE20217877U1 (de) 2002-11-18 2004-04-01 Gira Giersiepen Gmbh & Co. Kg Hauskommunikationssystem mit Zweidraht-Teilnehmeranschluss
DE202024107032U1 (de) 2024-12-04 2026-04-30 Gira Giersiepen Gmbh & Co. Kg Modulares Haus-Kommunikationssystem

Also Published As

Publication number Publication date
IT7907222A0 (it) 1979-12-19
DE3023988A1 (de) 1981-07-02

Similar Documents

Publication Publication Date Title
AT386668B (de) Gasuebergabestation
MX154551A (es) Mejoras en sistema de almacenamiento digital de voz para sistemas de comunicacion
IT8248273A0 (it) Dispositivo e procedimento di sigillatura fra superfici di tenuta coassiali
DE3276956D1 (en) Structural units and modules for framed buildings
IT991353B (it) Metodo ed apparecchiatura per compensare variazioni in sistemi di seguimento automatico di pista
DE69424334D1 (de) Empfangsstation in Feueralarmsystem
GB2102988B (en) Null seeking system for remote centre compliance device
EP0034562A3 (en) Signal station for fire alarm system
IT7907222A0 (it) Sistema a due soli fili per il collegamento fra posto esterno ed i derivati negli impianti citofonici
FR2542728B1 (fr) Vitrage a basse emissivite
BE885363A (nl) Personeeloproepinstallatie, in het bijzonder voor horecabedrijven
NO911111D0 (no) Innretning for aa boeye hulprofillister til avstandsholderammer for isolasjonsglass.
DK432481A (da) Traekstation til roertransportanlaeg
ZA822585B (en) Ultrasonic rail testing system
IL72294A0 (en) Method and a system for building up an ice store
GB2144478B (en) Building repair system
GB8319465D0 (en) Fire alarm pull station
IT8304944V0 (it) Sistema di collegamento fra due pannelli ed uno o due soli
IT8420458A0 (it) Dispositivo per sostenere su unaparete oggetti da arredamento.
JPS56155499A (en) Disaster preventing system caused by earthquake
JPS56135289A (en) Device for automatically checking ticket with telephone
JPS5710893A (en) Crime preventing managing device for building
IT1135331B (it) Nodo strutturale per il collegamento fra pilastri e travi in sistemi di prefabbricazione edilizia ad ossatura portante
GB2093305B (en) Station watch alarm system
JPS57120187A (en) Gas leak alarm system