The IDS will become a backup system, rarely forced to sound an alarm that someone has actually gotten past your secure threshold.
而IDS则成为了一个备份系统，因为很少人能入侵系统而激活报警机制。
Alarms that use the analog network as a main or backup link may lose their connection to alarm centers.
警告显示，模拟网络作为主要的或是后备链接，可能会丢失他们与报警中心的联系。
Alarms that use the analog network as a main or backup link may lose their connection to alarm centers.
警告显示，模拟网络作为主要的或是后备链接，可能会丢失他们与报警中心的联系。
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