在信息技术革命的推动下，世界通信技术发展日新月异，其主要发展趋势体现了“五化”，即；数字化、宽带化、综合化、智能化、个人化。我国通信技术和通信网也正朝着这个趋势发展，尤其是数字化发展极为迅速。我国通信网的建设与发展为通信工业提供了难得的市场发展空间与机遇 Under the impetus of the information technology revolution, the development of the world’s communications technology has been advancing with each passing day. Its major development trends reflect the “five changes,” namely, digitization, broadbandization, integration, intelligence and personalization. China’s communications technology and communications network are also moving in this trend, especially the rapid development of digital. The construction and development of China’s communication network provide the communication industry with a rare space and opportunity for market development.