Qvis iBox nvr User Manual page 53


Max connection: system supports up to a maximum of 20 users. Having a 0 value means
there is no connection limit.

MTU: This is to set the 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 the network will shut down. In
other words the MTU modification can affect the current network service. System may pop up a
dialog box for you to confirm the completed setup when you want to change the MTU settings.
Click the 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
NVR 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 your 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 a router, switch or
the network adapter.

1492: Recommend value for PPPoE.

1468: Recommend value for DHCP.

Please make sure MTU port does not conflict with other ports.

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.
Important: For the IP address for the IPv6 version, default gateway, preferred DNS and
alternate DNS, the input value shall be 128-digits. It cannot be left blank.
After completing all the setup please click the save button, system will go back to the previous
menu.
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