BE433696A - - Google Patents

Info

Publication number
BE433696A
BE433696A BE433696DA BE433696A BE 433696 A BE433696 A BE 433696A BE 433696D A BE433696D A BE 433696DA BE 433696 A BE433696 A BE 433696A
Authority
BE
Belgium
Prior art keywords
signal
relay
circuit
code
contact
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE433696A publication Critical patent/BE433696A/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)
BE433696D BE433696A (https=)

Publications (1)

Publication Number Publication Date
BE433696A true BE433696A (https=)

Family

ID=93011

Family Applications (1)

Application Number Title Priority Date Filing Date
BE433696D BE433696A (https=)

Country Status (1)

Country Link
BE (1) BE433696A (https=)

Similar Documents

Publication Publication Date Title
BE433696A (https=)
US2024581A (en) Telegraph toll system
US2400124A (en) Telegraph exchange system
US1181559A (en) Intercommunicating selective lockout telephone system.
GB527336A (en) Printing telegraph system
BE384554A (https=)
US1209303A (en) Multiple-dial calling device.
BE412135A (https=)
BE426051A (https=)
BE427507A (https=)
BE377986A (https=)
BE340840A (https=)
BE467275A (https=)
BE371832A (https=)
BE345833A (https=)
BE480310A (https=)
BE353818A (https=)
BE528427A (https=)
BE349461A (https=)
BE429601A (https=)
BE411173A (https=)
BE731310A (https=)
BE531956A (https=)
BE532489A (https=)
BE408188A (https=)