Weakest Link

CCTV system can only work when all its components work together at the same time.


For instance, if you want to perform distance monitoring with your handphone;

you need a working camera, the camera power supply, connecting cable and plug from camera to the DVR, a working DVR, the DVR power supply, connecting cable and plug from DVR to the router & modem, a connecting broadband, a mobile phone network, a supporting handphone.



In other words a CCTV solution is as good as your weakest link. If one of the components, say the video connecting BNC plug is of inferior quality, the video quality you received on the phone will be poor too.