资料来源 : Free On-Line Dictionary of Computing
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} 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://www.cablemodem.com/FAQs.html)}.
(2001-07-10)