4.8 Turn off the device
5 WEB and client
5.1 WEB operation
5.1.1 Network connection
5.1.2 Control installation and user login logout
5.1.3 WEB operator interface
5.1.4 Real - time video surveillance
5.1.5 PTZ control
5.1.6 System Configuration
5.1.7 Video inquiry
5.1.8 Alarm settings
5.1.9 About
5.2 Client operating
6 Extended functionality
6.1 DDNS function
6.1.1 Outline
6.1.2 VSSIP
6.1.3 3322 DDNS
6.1.4 NO-IP(www.no-ip.com)
6.1.5 Dyndns DDNS(www.dyndns.com)
6.1.6 Dynamic DNS verification
6.2 Port mapping
6.2.1 UPnP function
6.2.2 Manual port mapping
6.3 NTP function
6.3.1 Internet network environment settings
6.3.2 Private network environment settings
6.4 PTZ function
6.5 Voice intercom
6.5.1 Outline
6.5.2 Configuration method
6.6 Hard disk redundancy
6.7 Hard S.MA.R.T technology
7 Appendix
7.1 Term
7.1.1 I-frames
7.1.2 B-frames
7.1.3 P-frames
7.1.4 S.M.A.R.T technology
7.1.5 VCBS
7.1.6 BNC
7.2 Hard disk calculated and maintenance
7.2.1 Hard disk capacity is calculated with reference to
7.2.2 Hard Troubleshooting
7.2.3 Common Troubleshooting