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Please take a look at www.wavestore.com. This is one of the most powerful and flexible DVR systems around, in addition to having Linux O/S. It was designed for massive storage and networking, and is very friendly to drive. We have just upgraded the software to take IP cameras as well as analog. It is a system that when installed and regularly upgraded with ever-devloping software features should last a decade or more. It can be viewed and operated from either Windows or Linux client PC's, even Mac's. There is a suite of high-level software for adding special screens, maps, and so forth. Screen languages such as Turkish, Italian, Japanese, French, Spanish can be easily selected, and multiple viewers can all work in their chosen languages. Lip-synch audio is standard, even when recording video at low rates (e.g. 7 ips, instead of 30ips). We currently build product in UK, Italy, Brazil, Turkey, and the US. Our sales number is [phone]. Myself or Jay can be contacted by cell on [phone], or [phone]. Regards, Roger Isaacson.