LINK

Hybrid Fiber Coax (HFC) Networks

        http://www.iec.org/online/tutorials/hfc_dwdm/

        http://www.commsdesign.com/csdmag/sections/feature_article/OEG20020801S0020

　    http://www.intersil.com/design/comm/hfc.asp

        http://www.linktionary.com/h/hfc.html

        http://www.sciatl.com/customers/training_course_hybridfiber.htm

DOCSIS

        http://www.cablemodem.com/

        http://www.cablemodem.com/specifications/

        http://www.docsis.org/

        http://www.webopedia.com/TERM/D/DOCSIS.html