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12,000 and 14,400 bits per second four-wire duplex modems for data communications use on telephone-type circuits
Publication year - 1992
Language(s) - English
Resource type - Reports
DOI - 10.6028/nist.fips.168
Subject(s) - duplex (building) , telecommunications , electronic circuit , electrical engineering , telephone line , computer science , engineering , telephone network , dna , genetics , biology

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