![](https://csdnimg.cn/release/download_crawler_static/88362970/bg12.jpg)
16.2.2 系统功能.....................................................................................790
第 17 章 视频联网设计................................................................................795
17.1 联网拓扑 ...........................................................................................795
17.2 媒体和信令流向 ................................................................................796
17.3 承载宽带分析 ....................................................................................799
第 18 章 系统热备设计................................................................................801
18.1 系统架构 ...........................................................................................801
18.1.1 1:1 热备.......................................................................................801
18.1.2 N:1 热备 ......................................................................................802
18.2 系统设计 ...........................................................................................803
18.3 系统功能 ...........................................................................................804
18.4 系统优势 ...........................................................................................805
第 19 章 系统安全性设计 ............................................................................807
19.1 网络传输与接入安全 .........................................................................807
19.1.1 中心局域网网络安全...................................................................807
19.1.2 监控专网接入安全 ......................................................................809
19.1.3 终端接入安全 .............................................................................809
19.2 系统数据安全 ....................................................................................809
19.2.1 完整校验机制 .............................................................................810
19.2.2 传输加密机制 .............................................................................810
19.3 应用安全 ...........................................................................................811
19.3.1 用户身份认证 .............................................................................811
19.3.2 访问权限控制 .............................................................................811
19.3.3 用户权限管理 .............................................................................811
19.4 行为审计措施 ....................................................................................813
19.5 故障抢修机制 ....................................................................................813
第 20 章 系统利旧改造设计.........................................................................814
20.1 背景 ..................................................................................................814