theHDcctv at ASIS 2009 Exhibition : Meet us at ASIS 2009 in SanDiego 21~24 April 2009. 4HD4D1 System (4 channels HD and 4 channels D1 Hybrid DVR system) will be demonstrated at the booth of HDcctv Alliance, Booth #672 Hall D. http://www.asisonline.org/