Draytek VigorIPPBX 3510 - Page 35

VigorIPPBX 3510 Series User’s Guide
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Free trial edition: it offers a period of trial for you to get acquainted with WCF
function.
Formal edition with license key: you can extend the license valid time manually.
Note: If you activate Formal edition with license key first, the free trial edition will be
invalid.