off normal contact 예문

• The line circuit was much like that in 1XB with a Line Relay for alerting the exchange to a trip condition, and the Vertical Off Normal contacts of the switch vertical serving as cutoff relay.
• Crossbar switch did it with a paper sleeve on the Vertical Off Normal contact, 5ESS switch by translation, and DMS-100 by a slide switch on the line card, all according to what the customer ordered.