... . With available capabilities, designed for maximum reliability 8004/8/16D1 DVR features embedded Linux operation system, it allows ... flexible for network transmission and mobile phone monitoring.1,4,8 channel simultaneous realtime playback.Multiple function: Live, Recording, ... ,FTP,DNS,DDNS,NTP,UPNP,EMAIL.Support backup & upgrade with USB flash disk.Perfect support 3G Mobilephone Surveillance ...