BE427161A - - Google Patents

Info

Publication number
BE427161A
BE427161A BE427161DA BE427161A BE 427161 A BE427161 A BE 427161A BE 427161D A BE427161D A BE 427161DA BE 427161 A BE427161 A BE 427161A
Authority
BE
Belgium
Prior art keywords
operator
relay
key
telephone system
line
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE427161A publication Critical patent/BE427161A/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
BE427161D BE427161A (en:Method)

Publications (1)

Publication Number Publication Date
BE427161A true BE427161A (en:Method)

Family

ID=87798

Family Applications (1)

Application Number Title Priority Date Filing Date
BE427161D BE427161A (en:Method)

Country Status (1)

Country Link
BE (1) BE427161A (en:Method)

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