IT1029547B - Impianto interfonico con apparecchi in parallelo su unica linea bifilare - Google Patents

Impianto interfonico con apparecchi in parallelo su unica linea bifilare

Info

Publication number
IT1029547B
IT1029547B IT51772/74A IT5177274A IT1029547B IT 1029547 B IT1029547 B IT 1029547B IT 51772/74 A IT51772/74 A IT 51772/74A IT 5177274 A IT5177274 A IT 5177274A IT 1029547 B IT1029547 B IT 1029547B
Authority
IT
Italy
Prior art keywords
wire line
intercom system
parallel devices
devices
parallel
Prior art date
Application number
IT51772/74A
Other languages
English (en)
Inventor
G Zukar
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
Priority to IT51772/74A priority Critical patent/IT1029547B/it
Priority to FR7519116A priority patent/FR2276755A1/fr
Priority to SE7507069A priority patent/SE7507069L/xx
Priority to BE157549A priority patent/BE830487A/xx
Priority to LU72821A priority patent/LU72821A1/xx
Priority to DK291475A priority patent/DK291475A/da
Priority to NL7507718A priority patent/NL7507718A/xx
Priority to DE19752528854 priority patent/DE2528854A1/de
Priority to JP50080482A priority patent/JPS5125003A/ja
Application granted granted Critical
Publication of IT1029547B publication Critical patent/IT1029547B/it

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
IT51772/74A 1974-06-27 1974-06-27 Impianto interfonico con apparecchi in parallelo su unica linea bifilare IT1029547B (it)

Priority Applications (9)

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
FR7519116A FR2276755A1 (fr) 1974-06-27 1975-06-18 Installation interphonique avec appareils en parallele sur une ligne unique a deux fils
SE7507069A SE7507069L (sv) 1974-06-27 1975-06-18 Snabbtelefonsystem.
BE157549A BE830487A (fr) 1974-06-27 1975-06-20 Installation interphonique avec appareil en parallele sur une ligne sur une ligne unique a deux fils
LU72821A LU72821A1 (it) 1974-06-27 1975-06-25
DK291475A DK291475A (da) 1974-06-27 1975-06-26 Samtaleanleg med modtager senderset som er parallelforbundet med en enkelt to trads telefonledning
NL7507718A NL7507718A (nl) 1974-06-27 1975-06-27 Interfoonstelsel.
DE19752528854 DE2528854A1 (de) 1974-06-27 1975-06-27 Wechselsprechverkehrsystem
JP50080482A JPS5125003A (it) 1974-06-27 1975-06-27

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
IT1029547B true IT1029547B (it) 1979-03-20

Family

ID=11275703

Family Applications (1)

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

Country Status (9)

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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52118091U (it) * 1976-03-03 1977-09-07
DE2819386A1 (de) * 1978-05-03 1979-11-08 Bosch Gmbh Robert Fernbedienung fuer funksprechgeraete
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
DE3320397A1 (de) * 1983-06-06 1984-12-06 Siemens AG, 1000 Berlin und 8000 München Anordnung zur vermittelbaren uebertragung von tonsignalen
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 (it) * 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

Also Published As

Publication number Publication date
BE830487A (fr) 1975-10-16
JPS5125003A (it) 1976-03-01
DE2528854A1 (de) 1976-01-08
DK291475A (da) 1975-12-28
NL7507718A (nl) 1975-12-30
LU72821A1 (it) 1975-09-29
FR2276755A1 (fr) 1976-01-23
SE7507069L (sv) 1975-12-29

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