OK, so we started the work today and the first thing we did was to plug in all the available video cables into the two DVRs. This will give us a quick result of which CCTV is working and which is suspect. Once that is done, the next step is to identify each camera. It is a good thing that we have a set of walkie-talkies.
I can sit at the security guard room while my assistant checks for cameras at each floor. Ha ha ha ha! Anyway, When that is done, the next step is to start checking each faulty camera.......