摘要: |
Troubleshooting And Repair - Last time (IMSA Journal Nov/Dec 2020), we discussed what can cause network outages. This month we'll cover how to find and fix problems, as well as how to prepare for restoration. Get ready for a flood of information! Remember that troubleshooting needs to be done systematically, eliminating problems one by one. Fiber-optic networks have several modes of failure. If the system goes down completely, the communications electronics alarms and indicates the link with the problem. If everything is down, the first thing to check is power, both mains and backup. |