... : Embedded Linux- Video standards: PAL/NTSC- Video compression: H.264- Audio compression: G711- Video input: 4-CH BNC input- Video output: 2-CH BNC output- Audio ... RJ45 port- Network functions: TCP/IP,UDP,DHCP,DNS,IPFilter,PPPOE,DDNS,FTP,Email,UPNP,Alarm Server,ARSP- 2 USB interfaces, ... one for mouse,one for backup- Interface: Video in 1/2/3/4, Video Out, Audio ...