Draytek Vigor 2820 User Manual page 140

For Block Unknown Domain – this function can block incoming calls (through Phone 1
and/or Phone 2) from unrecognized domain that is not specified in SIP accounts. Such
control also can be done based on preconfigured schedules.
For Block IP Address – this function can block incoming calls (through Phone 1 and/or
Phone 2)coming from IP address. Such control also can be done based on preconfigured
schedules.
R e g i o
R e g i o
This page allows you to process incoming or outgoing phone calls by regional. Default
values (common used in most areas) will be shown on this web page. You can change the
number based on the region that the router is placed.
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Vigor2820 Series User's Guide