Digital Video Server 1:There is the same network feature as ip camera. 2:channel, CIF 3:channel, D1 Digital Video Server1 Video Resolution: D1/Half-D1/CIF ... support 3G Network:EVDO( CDMA2000),WCDMAVideo Input 1/2/4 channel composite video, PAL or NTSC, BNC interface,1.0Vp-p,impedance ... 0 standard. (Max 32G SD card), Support FTP server.Alarm Input 4 channel on/off input, supporting NO (normally open) or ...