第十章DOCSIS工程调试第一节DOCSIS工程调试的特点及其重要性一、DOCSIS在中国——历史回顾与现状我国的有线电视双向改造的试点工作在上世纪九十年代初就开始了,已有近十八年的时间。最初的十年只有一种模式,即DOCSIS模式,又称CM系统。在多个城市进行了试点工作,有的城市进展得比较好,有的城市则不那么理想,总体说来还是不理想的。反映的主要问题是系统不稳定、常常掉线。我们的产品,例如双向放大器和光节点等也是按照DOCSIS标 Chapter 10 DOCSIS Engineering Commissioning Section 1 Characteristics and Importance of DOCSIS Engineering Commissioning I. DOCSIS in China - Historical Review and Current Situation China’s CATV pilot project started in the early 1990s. Nearly 18 years time. In the first decade there was only one model, the DOCSIS model, also known as the CM system. Pilot projects were carried out in several cities, with some cities progressing well and others being less than ideal and generally unsatisfactory. The main problem that is reflected is that the system is unstable and often dropped. Our products, such as bidirectional amplifiers and optical nodes, are also in accordance with the DOCSIS standard