one channel product 1. H.264 video and MP3 audio compression 2. Double streaming for separate recording and real time view through internet. 3.Two way talk 4. Snapshot to assigned IP. 5. Embedded webserver, remotely view and control with IE 6. Network bit rate adjustable of 16kb~4Mbps, fram is 1~25(PAL) or 1~30(NTSC) 7. Alarm for video lost, video mask, motion detection and sensor 8. RS232/485 supported, PTZ, speed dome, and matrix supported. 9. Multiple user acccess simultaneously, multipls class password protection. 10. Self reconnection when network got broken.