MODEM ROUTER USER MANUAL - Warranty Life

Precedence Select this field to mark the IP precedence bits in the
packet that match this classification rule.
TOS The IP (Internet Protocol) uses the ToS (Type of Service)
field to provide an indication of the quality of service
desired. These parameters are to be used to guide the
selection of the actual service parameters when
transmitting an IP datagram through a particular network.
IP QoS Rules This table lists the rules you have configured. Click
“Delete Selected” to delete the selected rules or click
“Delete All” to delete all the rules.
When you finish, click “Apply Changes.” You’ll see the following message
displayed on Web browser.
Click “Continue” to save the settings made and go back to the Web management
interface; click “Apply” to save the settings made and restart the router so the
settings will take effect after it reboots.
5.2.6 NAT (Network Address Translations)
NAT (network address translations) solve the problem of sharing a single IP
address among multiple computers. Without NAT, all computers must be
assigned with a valid Internet IP address to get connected to the Internet; but
Internet service providers provide only a limited number of IP addresses to each
user. Therefore, it’s necessary to use NAT technology to share a single Internet
IP address among multiple computers on local network so everyone can get
connected.
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