The first option, commonly known as
North American DOCSIS, or simply DOCSIS, is intended for systems that use a 6 MHz
downstream transmission channel and an upstream band in the 5??“42 MHz range. The
second option, commonly known as EuroDOCSIS, is intended for systems that use an
8 MHz downstream transmission channel and an upstream band in the 5??“65 MHz
range. Additionally, the ITU Recommendations include a third technology option developed
for compatibility with certain systems in Japan that use a 6 MHz downstream
transmission channel and an upstream band in the 10??“55 MHz range.
The Hybrid Fiber-Coax Cable Infrastructure
The DOCSIS specification is designed to be deployed on a system developed to carry
entertainment video programming and to coexist with that programming, leading to
certain restrictions being imposed upon the network infrastructure.
DOCSIS
Version
Maximum Upstream
Data Rate
Maximum Downstream
Data Rate (6 MHz systems)
Maximum Downstream
Data Rate (8 MHz systems)
DOCSIS 1.0 5.12 Mbps
(10.24 Mbps in some systems)
38.8 Mbps 55.6 Mbps
DOCSIS 1.1 10.24 Mbps 38.8 Mbps 55.6 Mbps
DOCSIS 2.0 30.72 Mbps 38.
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