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Talk:Telephone line

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This is an old revision of this page, as edited by 216.80.119.92 (talk) at 09:57, 25 September 2008. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

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why pstive terminal is grounded in telephone


Are telephone lines AC or DC? - Jack (talk) 05:56, 27 November 2006 (UTC)[reply]

why only USA?

shouldn't it cover general topic? 216.80.119.92 (talk) 09:54, 25 September 2008 (UTC)[reply]


sources

some may be found here Telecommunication#Telephone

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