User Manual

DS-73xxHUI-K4, DS-73xxHQI-K4, DS-90xxHUI-K8 DVR User Manual
UM DS-73xxHUI-K4 DS-73xxHQI-K4 DS-90xxHUI-K8 092017NA 151
The time synchronization interval can be set from 1 to 10080 minutes,
and the default value is 60 minutes. If the DVR is connected to a public
network, use an NTP server that has a time synchronization function
such as the server at the National Time Center (IP Address:
210.72.145.44). If the DVR is set in a customized network, NTP software
can be used to establish a NTP server used for time synchronization.
11.2.5 Configuring NAT
Purpose
Universal Plug and Play (UPnP™) can permit the device seamlessly to discover
the presence of other network devices on the network and establish
functional network services for data sharing, communications, etc. You can
use the UPnP™ function to enable fast connection of the device to the WAN
via a router without port mapping.
Before You Start
If you want to enable the UPnP™ function of the device, you must enable the
UPnP™ function of the router to which your device is connected. When the
network working mode of the device is set as multi-address, the Default
Route of the device should be in the same network segment as that of the
LAN IP address of the router.
1. Go to Menu > System Configuration > Network > NAT.
Figure 200, UPnP™ Settings Interface
2. Check Enable UPnP checkbox to enable UPnP™.