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80 CHAPTER 4: MICROSOFT WINDOWS ENVIRONMENT
Figure 17 3Com Class of Service Setup Window
If an application is not listed in the Supported Applications
tab (Figure 17), you can obtain the necessary port or socket
range from the application’s manufacturer, and manually
enter the information in the Additional Ranges tab
(Figure 18); or you can set the range to include
all applications.
4 Select the Enable radio button.
The default mode is Disable. When Class of Service is
disabled, you cannot select applications shown in the
Supported Applications Tab for high-priority network
access. In addition, you cannot make changes to data
shown in the Additional Ranges tab and Advanced Options
tab. Selecting Enable gives you access to all three tabs of
the 3Com Class of Service Setup window.