OC3 delivery unit; low level maintenance bus

The present invention relates generally to telephone networks, and more particularly to an interface between fiber optic transport media and a switching system designed for electrical signals. A method of providing a back up communications link for control messages within a delivery unit. The primar...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Doss, Dwight W, Hogg, Raymond L, Wynn, David W, Blanchard, Michael K, Butterfield, Byron T, Cummings, David C
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention relates generally to telephone networks, and more particularly to an interface between fiber optic transport media and a switching system designed for electrical signals. A method of providing a back up communications link for control messages within a delivery unit. The primary means of transport for both network data and control data within the delivery unit is by means of ingress and egress buses between application modules of the delivery unit. However, control messages from a unit controller can also be delivered by means of a separate link, typically to a bus control module.