... USB DVR 2.PTZ, Audio, Network, 3.VGA 4.OEM CCTV DVR H. 264 Network Digital Video ... USB, PTZ, network, two-way audio,Alarm, VGA;2. Support mobile phone live preview via GPRS/ ... (PAL:704*576 NTSC:704*480), 1 CH VGA( up to 1280X1024)Audio Compression8K*16bit ADPCMAudio OutputRCA ... FunctionsTCP/IP, PPPoE, DHCP , DDNSIE Remote Preview1/4 channels preview simultaneously Mobile phone live viewsupport(Iphone, ...