VNX exceeds stringent EIA broad??-quality specification RS-250C for medium haul standard. And it is fully compatible with PAL, NTSC, SECAM and CCIR signal standards. The VORX-Network Management Software (NMS) application is normally deployed through a dedicated RS485 port to monitor any failure of critical components in remote locations via a PC with a user friendly Windows GUI and electronic map display. It offers digital non-compression transmission and hot-plugging, debugging-free installation. It is equipped with equipment recognition and encryption to prevent illegal video theft. The interface of video, audio, data, Ethernet have the function of thunder defending with the maximums transmission distance reaches of 80 kilometers. It also has the function of character-overlap, which needs to be customized separately.