16.3 Configure DDNS ............................................................................................................ 145
16.4 Configure PPPoE ........................................................................................................... 146
16.5 Configure NTP .............................................................................................................. 146
16.6 Configure SNMP ........................................................................................................... 147
16.7 Configure Email ............................................................................................................ 148
16.8 Configure Ports ............................................................................................................. 150
17.1 Set Hot Spare Device .................................................................................................... 152
17.2 Set Working Device ...................................................................................................... 153
18.5 Upgrade System ........................................................................................................... 165
18.5.2 Upgrade by FTP ................................................................................................... 165
18.7 System Service.............................................................................................................. 167
Network Video Recorder User Manual
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