本文件定义了电缆系统高速数据的射频接口规范。它们由有线电视实验室（CableLabs）为有线电视行业的利益而开发，包括来自北美、欧洲和其他地区的运营商和供应商的贡献。

This document defines the radio-frequency interface specifications for high-speed data-over-cable systems. They were developed by Cable Television Laboratories (CableLabs) for the benefit of the cable industry, including contributions by operators and vendors from North America, Europe, and other regions.