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direct-current quadruplex system |
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direct-current quadruplex system [də¦rekt ¦kə·rənt ′kwä·drə‚pleks ‚sis·təm]
(communications) Direct-current telegraph system which affords simultaneous transmission of two messages in each direction over the same line, achieved by superimposing neutral telegraph upon polar telegraph. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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