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CH388390A - Circuit arrangement for an intercom - Google Patents

Circuit arrangement for an intercom

Info

Publication number
CH388390A
CH388390A CH134561A CH134561A CH388390A CH 388390 A CH388390 A CH 388390A CH 134561 A CH134561 A CH 134561A CH 134561 A CH134561 A CH 134561A CH 388390 A CH388390 A CH 388390A
Authority
CH
Switzerland
Prior art keywords
intercom
circuit arrangement
arrangement
circuit
Prior art date
Application number
CH134561A
Other languages
German (de)
Inventor
Bayer Rudolf
Ulrich Knauer Hans
Vogel Georg
Original Assignee
Standard Telephon & Telegraphe
Nissl & Co
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 Standard Telephon & Telegraphe, Nissl & Co filed Critical Standard Telephon & Telegraphe
Publication of CH388390A publication Critical patent/CH388390A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/04—Arrangements for interconnection not involving centralised switching involving a separate line for each pair of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
CH134561A 1960-02-10 1961-02-06 Circuit arrangement for an intercom CH388390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT102860A AT233634B (en) 1960-02-10 1960-02-10 Circuit arrangement for an intercom

Publications (1)

Publication Number Publication Date
CH388390A true CH388390A (en) 1965-02-28

Family

ID=3505113

Family Applications (1)

Application Number Title Priority Date Filing Date
CH134561A CH388390A (en) 1960-02-10 1961-02-06 Circuit arrangement for an intercom

Country Status (5)

Country Link
AT (1) AT233634B (en)
BE (1) BE600001A (en)
CH (1) CH388390A (en)
DE (1) DE1164503B (en)
FR (1) FR1288163A (en)

Also Published As

Publication number Publication date
FR1288163A (en) 1962-02-12
AT233634B (en) 1964-05-25
BE600001A (en) 1961-05-29
DE1164503B (en) 1964-03-05

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