Voter (telecommunications)

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Rotary dial in a local exchange (museum system)
General symbol for a voter

A selector (ger .: selector, switch ) is in the switching technology a coupling device within switching equipment . The term is mainly used for the historical electromechanical switching technology, it is no longer used in digital switching technology. The selector consists of a constructive combination of coupling points to form a coupling row , which allows an input to be connected to one of several outputs.

Depending on the switching task, a distinction is made in electromechanical dialing systems:

  • Call searcher to concentrate the message traffic (reverse search for the source connection)
  • Selection for branching the message traffic (connection to a free group selector)
  • Group selector for branching the message traffic (direction selection)
  • Line selector to expand the message traffic (last dial level to determine the destination connection)

Typical voters (in historical order) Strowger switch , case selector , EMD-selector and noble metal motor coordinates selector .

literature

  • Volker Jung, Hans-Jürgen Warnecke (Hrsg.): Handbook for telecommunications. Springer Verlag, Berlin / Heidelberg 1998, ISBN 978-3-642-97703-9 .
  • Mareike Bonnekoh: Voice over IP. Legal problems of the convergence of Internet and telephony, LIT Verlag, Berlin 2007, ISBN 978-3-8258-0198-4 .
  • Dieter Conrads: Telecommunications. Basics - Procedures - Networks, 4th edition, Friedrich Vieweg & Sohn Verlag, Wiesbaden 2001, ISBN 978-3-528-34589-1 .
  • Peter R. Gerke: Digital communication networks. Springer Verlag, Berlin / Heidelberg 1991, ISBN 978-3-642-93459-9 .

hints and notes

  1. ↑ Case voters in the museum

Web links

Wiktionary: voters  - explanations of meanings, word origins, synonyms, translations