6.
Now, the web page will display the service that you have activated according to your
selection(s). The valid time for the free trial of these services is one month.
Later, if you need to extend the license valid time, you can also use the Web Filter
Activation again to reach your goal by clicking the radio button of Formal edition
with license key and clicking Next.
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VigorIPPBX 2820 Series User's Guide