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@@ -56,6 +56,10 @@ Dr. Martin Cooper produced the first handheld phone "DynaTAC8000x", the famous B
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+<p>
+The detailed communication between base station and mobile station is described in <a href="TIA_EIA_553_A.compressed.pdf">TIA/EIA-553 standard</a>. Click for reading the PDF file. <i>Reproduced under written permission from Telecommunications Industry Association.</i>
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 *TBD*
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