CH214506A - Installation téléphonique permettant la jonction simultanée de plusieurs lignes à une même station. - Google Patents

Installation téléphonique permettant la jonction simultanée de plusieurs lignes à une même station.

Info

Publication number
CH214506A
CH214506A CH214506DA CH214506A CH 214506 A CH214506 A CH 214506A CH 214506D A CH214506D A CH 214506DA CH 214506 A CH214506 A CH 214506A
Authority
CH
Switzerland
Prior art keywords
lines
switch
amplifier
conductor
parallel
Prior art date
Application number
Other languages
English (en)
French (fr)
Inventor
Creti Marcello
Original Assignee
Creti Marcello
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 Creti Marcello filed Critical Creti Marcello
Publication of CH214506A publication Critical patent/CH214506A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
CH214506D 1938-12-20 1938-12-20 Installation téléphonique permettant la jonction simultanée de plusieurs lignes à une même station. CH214506A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH214506T 1938-12-20

Publications (1)

Publication Number Publication Date
CH214506A true CH214506A (fr) 1941-04-30

Family

ID=4448728

Family Applications (1)

Application Number Title Priority Date Filing Date
CH214506D CH214506A (fr) 1938-12-20 1938-12-20 Installation téléphonique permettant la jonction simultanée de plusieurs lignes à une même station.

Country Status (2)

Country Link
BE (1) BE431728A (en:Method)
CH (1) CH214506A (en:Method)

Also Published As

Publication number Publication date
BE431728A (en:Method)

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