Bell No. 1 ESS

Bell No. 1 ESS

Das Bell No.1 Electronic Switching System (1ESS) ist die erste regulär eingesetzte Vermittlungsstelle für Telekommunikation, die rein speicherprogrammiert arbeitete. 1ESS wurde 1965 in Succasunna, N.J., USA erstmals in Betrieb genommen[1].

1ESS verwendet einen redundanten Zentralprozessor in Harvard-Architektur. Telekommunikationsdienste können seither flexibel programmiert werden[2].

Fußnoten

  1. ↑ Ketchledge R.W.: "The No.1 Electronic Switching System" IEEE transactions on communication technology, Bd 13 Nr 1, März 1965, 38-41
  2. ↑ Tuomenoska L.S., Ulrich W.: "Problems of Programming for Shared Real-Time Systems" IEEE transactions on communication technology, Bd 15 Nr 1, Feb. 1967, 5-10

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