Technical data

4.2 Phones and Devices 61
Black- and White Listing
Manage in- and out-bound calls via Black or White Listing.
Figure 4.9: Black and White Listing
A “black list” will suppress all phone numbers entered. In-bound
calls to these numbers will be rejected, while out-bound calls to
any of the numbers entered will be blocked.
A “white list” does allow calls to the numbers entered only. For
any other number, in-bound calls will be rejected, while out-
bound calls will be blocked respectively.