1概述随着我国公安系统通信网络规模的不断扩大,通信网的主要业务也从单纯的语音向数据和图像等多业务方向发展,而原有的基于实现某种业务建立起来的专用通信网络越来越无法满足用户的需求。利用宽带通信网络向公安系统内部和公众提供多样化、层次化的业务已成为公安系统提高服 1 Overview With the continuous expansion of the public security system communication network in our country, the main business of the communication network has also evolved from purely voice to multi-service such as data and image. However, the existing special communication network established based on the realization of certain services The more you can not meet the needs of users. The use of broadband communications network to the public security system to provide diversified and hierarchical business has become a public security system to improve service