Observa Telecom TD851W User Manual page 28

QoS: Select the Quality of Service types for the Virtual Circuit, including UBR (Unspecified Bit
Rate), CBR (Constant Bit Rate), and nrt-VBR (Variable Bit Rate) and rt-VBR. Please note that
the selection of QoS type will lead to the availability of the following parameters, including
PCR (Peak Cell Rate), CDVT (Cell Delay Variation Tolerance), SCR (Sustained Cell Rate)
and MBS (Maximum Burst Size). Please configure them according to your needs.
Click Apply Changes to save your configuration.
Note:
After configuration, you need to click the Save button appeared on the left panel so that your
configuration can still take effect after the Router reboots.
4.2.1.3 ADSL
Choose "Setup→WAN→ADSL" menu, you can configure some advanced parameters for your
ADSL Router in the next screen (shown in Figure 4-4).
After configuration, click Apply Changes button to save your changes.
Note:
After configuration, you need to click the Save button appeared on the left panel so that your
configuration can still take effect after the Router reboots.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide
Figure 4-6
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