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Pronunciation varies by accent · noun
(telecommunications) A kind of electrical connection often used in telephony, having solid copper wires that are punched down into short open-ended slots which are a type of insulation-displacement connector. The slots contain blades which cut through the wire's insulation as it is punched down, and hold the wire in position while making electrical contact..
Use punch down when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Punch down means (telecommunications) A kind of electrical connection often used in telephony, having solid copper wires that are punched down into short open-ended slots which are a type of insulation-displacement connector. The slots contain blades which cut through the wire's insulation as it is punched down, and hold the wire in position while making electrical contact..
Common synonyms include punch block.
The opposite depends on the specific sense.
Use punch down where its definition matches the intended context.
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