Draytek Vigor2820 Series User Manual page 185

Specific URI/URL or
Specific Number
Route
Index (1-15) in Schedule
Additionally, you can set advanced settings for call barring such as Block Anonymous, Block
Unknown Domain or Block IP Address. Simply click the relational links to open the web
page.
For Block Anonymous – this function can block the incoming calls without caller ID on the
interface (Phone port) specified in the following window. Such control also can be done based
on preconfigured schedules.
For Block Unknown Domain – this function can block incoming calls (through Phone port)
from unrecognized domain that is not specified in SIP accounts. Such control also can be done
based on preconfigured schedules.
This field will be changed based on the type you selected for
barring Type.
All means all the phone calls will be blocked with such
mechanism. ISDN means ISDN call will be blocked with such
mechanism.
Enter the index of schedule profiles to control the call barring
according to the preconfigured schedules. Refer to section 3.5.2
Schedule for detailed configuration.
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Vigor2820 Series User's Guide