FR2276755A1 - Installation interphonique avec appareils en parallele sur une ligne unique a deux fils - Google Patents

Installation interphonique avec appareils en parallele sur une ligne unique a deux fils

Info

Publication number
FR2276755A1
FR2276755A1 FR7519116A FR7519116A FR2276755A1 FR 2276755 A1 FR2276755 A1 FR 2276755A1 FR 7519116 A FR7519116 A FR 7519116A FR 7519116 A FR7519116 A FR 7519116A FR 2276755 A1 FR2276755 A1 FR 2276755A1
Authority
FR
France
Prior art keywords
wire lines
keyboards
memories
logic control
loudspeaker
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Withdrawn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
FR7519116A
Other languages
English (en)
French (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.)
STOC PRODUZIONE SpA
Original Assignee
STOC PRODUZIONE 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 STOC PRODUZIONE SpA filed Critical STOC PRODUZIONE SpA
Publication of FR2276755A1 publication Critical patent/FR2276755A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Mobile Radio Communication Systems (AREA)
FR7519116A 1974-06-27 1975-06-18 Installation interphonique avec appareils en parallele sur une ligne unique a deux fils Withdrawn FR2276755A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT51772/74A IT1029547B (it) 1974-06-27 1974-06-27 Impianto interfonico con apparecchi in parallelo su unica linea bifilare

Publications (1)

Publication Number Publication Date
FR2276755A1 true FR2276755A1 (fr) 1976-01-23

Family

ID=11275703

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7519116A Withdrawn FR2276755A1 (fr) 1974-06-27 1975-06-18 Installation interphonique avec appareils en parallele sur une ligne unique a deux fils

Country Status (9)

Country Link
JP (1) JPS5125003A (enrdf_load_stackoverflow)
BE (1) BE830487A (enrdf_load_stackoverflow)
DE (1) DE2528854A1 (enrdf_load_stackoverflow)
DK (1) DK291475A (enrdf_load_stackoverflow)
FR (1) FR2276755A1 (enrdf_load_stackoverflow)
IT (1) IT1029547B (enrdf_load_stackoverflow)
LU (1) LU72821A1 (enrdf_load_stackoverflow)
NL (1) NL7507718A (enrdf_load_stackoverflow)
SE (1) SE7507069L (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005256A3 (de) * 1978-05-03 1979-12-12 Robert Bosch Gmbh Fernbedienung für Funksprechgeräte
EP0128416A3 (de) * 1983-06-06 1986-05-14 Siemens Aktiengesellschaft Anordnung zur vermittelbaren Übertragung von Tonsignalen

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52118091U (enrdf_load_stackoverflow) * 1976-03-03 1977-09-07
IT1110111B (it) * 1979-01-12 1985-12-23 Acet Srl Impianto citofonico a portiere elettrico a due fili,suscettibile di utilizzare un pressistente impianto a campanello,senza necessita' di ulteriori linee di alimentazione
DE2946177C2 (de) * 1979-11-15 1988-08-18 S. Siedle & Söhne Telefon- und Telegrafenwerke GmbH, 7743 Furtwangen Hausanlage zur Übertragung von Informationen
JPS56109065A (en) * 1980-02-01 1981-08-29 Fujitsu Ltd Selective callout system by push button telephone set
JPS5745768A (en) * 1980-08-30 1982-03-15 Matsushita Electric Works Ltd Emergency telephone device
JPH0620210B2 (ja) * 1985-01-30 1994-03-16 アイホン株式会社 インターホン電話機混成装置
JPS61128860U (enrdf_load_stackoverflow) * 1985-01-31 1986-08-12
JPS6276851A (ja) * 1985-09-30 1987-04-08 Hitachi Elevator Eng & Serv Co Ltd 多局インタ−ホンの選局装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005256A3 (de) * 1978-05-03 1979-12-12 Robert Bosch Gmbh Fernbedienung für Funksprechgeräte
EP0128416A3 (de) * 1983-06-06 1986-05-14 Siemens Aktiengesellschaft Anordnung zur vermittelbaren Übertragung von Tonsignalen

Also Published As

Publication number Publication date
SE7507069L (sv) 1975-12-29
NL7507718A (nl) 1975-12-30
DK291475A (da) 1975-12-28
IT1029547B (it) 1979-03-20
DE2528854A1 (de) 1976-01-08
JPS5125003A (enrdf_load_stackoverflow) 1976-03-01
BE830487A (fr) 1975-10-16
LU72821A1 (enrdf_load_stackoverflow) 1975-09-29

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Legal Events

Date Code Title Description
ST Notification of lapse