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Data Over Cable Service Interface Specification : FOLDOC | Data Over Cable Service Interface Specification (DOCSIS) ITU-approved interface requirements for {cable modems} involved in high-speed data distribution over a {cable television} network. DOCSIS compatible equipment uses a 6 MHz carrier signal band for downstream, using 64 and 256 QAM (ITU Annex B), and {QPSK} and 16 QAM for upstream, allowing up to 36 and 10 Mb/s, respectively for downstream and upstream channels. {CableLabs FAQ (http://cablemodem.com/FAQs.html)}. (2001-07-10)
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