jasneetsingh
New Member
in most of the telecom infrastructure the negative DC voltages are used.
Can anybody explain the reason why ?
Can anybody explain the reason why ?
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jasneetsingh said:in most of the telecom infrastructure the negative DC voltages are used.
Can anybody explain the reason why ?
Dialtone said:I do not think there are any more multi-party lines (with the possible exception of 2 party lines) available in the US anymore, but it makes a good history lesson anyway.