... input PAL(25 fps) NTSC(30 fps) (BNC, 1Vp-p, Ohm)Video Output: 1 channel composite video output(BNC, ... /AVoice-chat: Input(3.5MM MIC in, 10KOhm, Vp-p=2.0V LINE in/ 50mV MIC in)Output(BNC, 10KOhm, ... Vp-p=2.0V LINE)3.Video Compression: H.264CIF:PAL(352X288) ... display, support video wall function, Manager host(monitor center) and 2 way voice-chat(or 1 way voice broadcast ...