BE384791A - - Google Patents

Info

Publication number
BE384791A
BE384791A BE384791DA BE384791A BE 384791 A BE384791 A BE 384791A BE 384791D A BE384791D A BE 384791DA BE 384791 A BE384791 A BE 384791A
Authority
BE
Belgium
Prior art keywords
relay
circuit
trunk
line
operator
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE384791A publication Critical patent/BE384791A/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/60Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
BE384791D BE384791A (https=)

Publications (1)

Publication Number Publication Date
BE384791A true BE384791A (https=)

Family

ID=53759

Family Applications (1)

Application Number Title Priority Date Filing Date
BE384791D BE384791A (https=)

Country Status (1)

Country Link
BE (1) BE384791A (https=)

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