DK291475A - INTERVIEW SYSTEM WITH RECEIVER SENDERSET CONNECTED IN PARALLEL WITH A SINGLE TWO-THREAD TELEPHONE LINE - Google Patents

INTERVIEW SYSTEM WITH RECEIVER SENDERSET CONNECTED IN PARALLEL WITH A SINGLE TWO-THREAD TELEPHONE LINE

Info

Publication number
DK291475A
DK291475A DK291475A DK291475A DK291475A DK 291475 A DK291475 A DK 291475A DK 291475 A DK291475 A DK 291475A DK 291475 A DK291475 A DK 291475A DK 291475 A DK291475 A DK 291475A
Authority
DK
Denmark
Prior art keywords
senderset
receiver
parallel
telephone line
interview system
Prior art date
Application number
DK291475A
Other languages
Danish (da)
Inventor
G Zukar
Original Assignee
Stocproduziones S P S
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 Stocproduziones S P S filed Critical Stocproduziones S P S
Publication of DK291475A publication Critical patent/DK291475A/en

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)
DK291475A 1974-06-27 1975-06-26 INTERVIEW SYSTEM WITH RECEIVER SENDERSET CONNECTED IN PARALLEL WITH A SINGLE TWO-THREAD TELEPHONE LINE DK291475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT51772/74A IT1029547B (en) 1974-06-27 1974-06-27 INTERCOM SYSTEM WITH PARALLEL DEVICES ON A SINGLE TWO-WIRE LINE

Publications (1)

Publication Number Publication Date
DK291475A true DK291475A (en) 1975-12-28

Family

ID=11275703

Family Applications (1)

Application Number Title Priority Date Filing Date
DK291475A DK291475A (en) 1974-06-27 1975-06-26 INTERVIEW SYSTEM WITH RECEIVER SENDERSET CONNECTED IN PARALLEL WITH A SINGLE TWO-THREAD TELEPHONE LINE

Country Status (9)

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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52118091U (en) * 1976-03-03 1977-09-07
DE2819386A1 (en) * 1978-05-03 1979-11-08 Bosch Gmbh Robert REMOTE CONTROL FOR RADIO INTERCOMS
IT1110111B (en) * 1979-01-12 1985-12-23 Acet Srl TWO-WIRE ELECTRIC DOOR ENTRY SYSTEM, SUSCEPTABLE TO USE A PRESSISTING DOOR BELL SYSTEM, WITHOUT THE NEED FOR ADDITIONAL POWER LINES
DE2946177C2 (en) * 1979-11-15 1988-08-18 S. Siedle & Söhne Telefon- und Telegrafenwerke GmbH, 7743 Furtwangen House system for the transmission of information
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 (en) * 1983-06-06 1984-12-06 Siemens AG, 1000 Berlin und 8000 München ARRANGEMENT FOR THE TRANSFERABLE TRANSMISSION OF SOUND SIGNALS
JPH0620210B2 (en) * 1985-01-30 1994-03-16 アイホン株式会社 Intercom telephone hybrid device
JPS61128860U (en) * 1985-01-31 1986-08-12
JPS6276851A (en) * 1985-09-30 1987-04-08 Hitachi Elevator Eng & Serv Co Ltd Channel selection device for multi-station interphone

Also Published As

Publication number Publication date
NL7507718A (en) 1975-12-30
BE830487A (en) 1975-10-16
IT1029547B (en) 1979-03-20
FR2276755A1 (en) 1976-01-23
JPS5125003A (en) 1976-03-01
LU72821A1 (en) 1975-09-29
SE7507069L (en) 1975-12-29
DE2528854A1 (en) 1976-01-08

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