User manual

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 IP address: Here you can use up/down button () or input the corresponding number to
input IP address. Then you can set the corresponding subnet mask the default gateway.
 Default gateway: Here you can input the default gateway. Note system needs to check the
validity of all IPv6 addresses. The IP address and the default gateway shall be in the same
IP section. That is to say, the specified length of the subnet prefix shall have the same string.
 DHCP: It is to auto search IP. When enable DHCP function, you can not modify IP/Subnet
mask /Gateway. These values are from DHCP function. If you have not enabled DHCP
function, IP/Subnet mask/Gateway display as zero. You need to disable DHCP function to
view current IP information. Besides, when PPPoE is operating, you can not modify
IP/Subnet mask /Gateway.
 MTU: It is to set MTU value of the network adapter. The value ranges from 1280-7200 bytes.
The default setup is 1500 bytes. Note MTU modification may result in network adapter reboot
and network becomes off. That is to say, MTU modification can affect current network
service. System may pop up dialog box for you to confirm setup when you want to change
MTU setup. Click OK button to confirm current reboot, or you can click Cancel button to
terminate current modification. Before the modification, you can check the MTU of the
gateway; the MTU of the DVR shall be the same as or is lower than the MTU of the gateway.
In this way, you can reduce packets and enhance network transmission efficiency.
The following MTU value is for reference only.
 1500: Ethernet information packet max value and it is also the default value. It is the
typical setup when there is no PPPoE or VPN. It is the default setup of some router,
switch or the network adapter.
 1492: Recommend value for PPPoE.
 1468: Recommend value for DHCP.
 Preferred DNS server: DNS server IP address.
 Alternate DNS server: DNS server alternate address.
 Transfer mode: Here you can select the priority between fluency/video qualities.
 LAN download: System can process the downloaded data first if you enable this function.
The download speed is 1.5X or 2.0X of the normal speed.
 LAN download: System can process the downloaded data first if you enable this function.
The download speed is 1.5X or 2.0X of the normal speed.
After completing all the setups click save button, system goes back to the previous menu.
Figure4‐62
4.10.2.2 Connection
The connection setup interface is shown as in Figure 4-63.
 Max connection: system support maximal 128 users. 0 means there is no connection limit.
 TCP port: Default value is 37777.
 UDP port: Default value is 37778.
 HTTP port: Default value is 80.