BE431631A - - Google Patents

Info

Publication number
BE431631A
BE431631A BE431631DA BE431631A BE 431631 A BE431631 A BE 431631A BE 431631D A BE431631D A BE 431631DA BE 431631 A BE431631 A BE 431631A
Authority
BE
Belgium
Prior art keywords
relay
circuit
station
line
subscriber
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE431631A publication Critical patent/BE431631A/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/04Switchboards

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
BE431631D BE431631A (https=)

Publications (1)

Publication Number Publication Date
BE431631A true BE431631A (https=)

Family

ID=91384

Family Applications (1)

Application Number Title Priority Date Filing Date
BE431631D BE431631A (https=)

Country Status (1)

Country Link
BE (1) BE431631A (https=)

Similar Documents

Publication Publication Date Title
BE431631A (https=)
US2024581A (en) Telegraph toll system
US1491769A (en) Telephone system
US2057864A (en) Telephone system
BE384554A (https=)
GB386614A (en) Printing telegraph exchange systems
US1556842A (en) Telephone system
US1286131A (en) Telephone system.
BE409407A (https=)
US2742529A (en) Trunk and control circuits to semiautomatic magneto exchange
BE420417A (https=)
BE352429A (https=)
BE363268A (https=)
BE483916A (https=)
BE411648A (https=)
BE481072A (https=)
BE351681A (https=)
BE343767A (https=)
BE371832A (https=)
BE422189A (https=)
BE426815A (https=)
BE435692A (https=)
GB507132A (https=)
BE428086A (https=)
BE485314A (https=)