... , 2. Standalone DVR, 3. real time recording 4. Support up to 3TB HDD 16Channels H.264 Compression+Support Remote View via ... /Dynamic IPProtocol TCP/IP, DHCP, DDNS, NTP, SMTPMobile phone Support Windows OS,Symbian OS,iPhone ,Blackberry and Android operation system ... User Manual 16CH Channels H.264 Surveillance CCTV Standalone DVR Digital Video Recorder DVR Support Remote View via Mobile AT-DVR8516H-TD