BE491860A - - Google Patents

Info

Publication number
BE491860A
BE491860A BE491860DA BE491860A BE 491860 A BE491860 A BE 491860A BE 491860D A BE491860D A BE 491860DA BE 491860 A BE491860 A BE 491860A
Authority
BE
Belgium
Prior art keywords
signaling
bars
relay
criterion
line
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE491860A publication Critical patent/BE491860A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
BE491860D BE491860A (https=)

Publications (1)

Publication Number Publication Date
BE491860A true BE491860A (https=)

Family

ID=136243

Family Applications (1)

Application Number Title Priority Date Filing Date
BE491860D BE491860A (https=)

Country Status (1)

Country Link
BE (1) BE491860A (https=)

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