... PSS CMS; Support POE Dahua 8 Channel standalone NVR recorder for IP camera systemUp to 4/8/16 channel with 1080p realtime live ... , RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPOE, DDNS, FTP, Alarm Server, IP Search(Support IP camera, DVR, NVS etc)Max. User Access20 ... (without HDD)iphone interface web interface Dahua 8 Channel standalone NVR recorder for IP camera system