Summary

This annex defines the radio-frequency interface specifications for high-speed data-over-cable systems.

Two options for physical layer technology are included. One option is based on the downstream multi-programme television distribution that is deployed in North America using 6 MHz channelling, and supports upstream transmission in the region 5 MHz to 42 MHz. The other one is based on the corresponding European multi-programme television distribution and supports upstream in the region 5 MHz to 65 MHz.