BE563860A - - Google Patents

Info

Publication number
BE563860A
BE563860A BE563860DA BE563860A BE 563860 A BE563860 A BE 563860A BE 563860D A BE563860D A BE 563860DA BE 563860 A BE563860 A BE 563860A
Authority
BE
Belgium
Prior art keywords
station
contacts
key
amplifier
pair
Prior art date
Application number
Other languages
English (en)
French (fr)
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.)
Publication of BE563860A publication Critical patent/BE563860A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
BE563860D 1971-11-30 BE563860A (esLanguage)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE776002A BE776002A (fr) 1971-11-30 1971-11-30 Dispositif pour intercommunications telephoniques en duplex a l'aide dehaut-parleurs.

Publications (1)

Publication Number Publication Date
BE563860A true BE563860A (esLanguage)

Family

ID=3858939

Family Applications (2)

Application Number Title Priority Date Filing Date
BE563860D BE563860A (esLanguage) 1971-11-30
BE776002A BE776002A (fr) 1971-11-30 1971-11-30 Dispositif pour intercommunications telephoniques en duplex a l'aide dehaut-parleurs.

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE776002A BE776002A (fr) 1971-11-30 1971-11-30 Dispositif pour intercommunications telephoniques en duplex a l'aide dehaut-parleurs.

Country Status (1)

Country Link
BE (2) BE776002A (esLanguage)

Also Published As

Publication number Publication date
BE776002A (fr) 1972-03-16

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