6[1]Data-Over-Cable Service Interface Specification(DOC- SIS), Radio Frequency Interface Specification SP-RFIvl.1-IO1-990211. www.cablemodem.com
7[2]Farmer, James, Walter Ciciora, David Large. Modem Cable Television Technology : Video, Voice and Data Communication. San Francisco, CA: Morgan Kaufman, 1999.
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9Data-Over-Cable Service Interface Specification (DOCSIS). Radio Frequency Interface Specification SP-RFIv1.1-IO1-990211[EB/OL]. www.cablemodem.com
10Farmer,James,Walter Ciciora等. Modern Cable Television Technology [A]: Video, Voice and Data Communication[C]. San Francisco,CA: Morgan Kaufman, 1999
