DLX-DVOP04 series of products provide uncompressed high quality transmission systems for 4 channels of digitalized analog video, up to 32 channels of bi-directional data and audio signals, 4 channels E1/T1 and 10/100M self-adaptive Ethernet data over one single mode or multimode optic fiber, DVOP is a multi-function product which based on highly reliable large-scale specialized ICs designed by ourselves. It's extremely flexible with the ability to add/drop video, audio, RS232/RS422/RS485, E1, 100M Ethernet ports via plugging in/out our field-proven service cards. Compared with the same kind of analog transmission systems that employ accidental amplitude or frequency modulation, DVOP products provide better transmission in quality.