. Bell telephone magazine . A buried coaxial cable maycarry as many as 9300 phoneconversations at one time. Radio relay systems can han-dle more than 17,000 simulta-neous phone conversations. Submarine cables whisk yourwords underseas as clearly aswhen you talk across town. These developments will speed yourtelephone conversations tomorrow.

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Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1920, bookyear1922