Multi-contact "marker connector" relay demo (at

Описание к видео Multi-contact "marker connector" relay demo (at

The number 5 crossbar exchange was popular starting from 1947 until the 1980's. This explainer video covers the "marker connector" sub-system in the exchange. It covers the concepts of the connector and how to works along side the marker during call establishment. Demos of a 30 make/break contact relay are provided.

Комментарии

Информация по комментариям в разработке