124 Configuring Enterprise Edge ServicesEnterprise Edge 2.0 Programming Operations Guide P0911588 Issue 01Restriction filtersRestriction filters prevent you from making certain kinds of calls from a telephoneor from lines that are available at the telephone. They also restrict some features.The following illustration shows the Restriction filters programming map.FiltersA restriction filter is a set or group of restrictions and overrides that specify theexternal numbers or feature codes that cannot be dialed from a telephone or on aline. Rather than define individual restrictions and apply them repeatedly totelephones and to lines, the restriction filters setting Allows you to assign them inone step as a single package of dialing sequences that are not permitted.In addition to restricting telephone numbers, you can prevent people from enteringdialing sequences used by the central office (the public network) to deliver specialservices and features. Because some of these features provide the caller with dialtone after they have entered the special code (which often uses # or *), users mayhave an opportunity to bypass restrictions. To prevent this from happening, you cancreate filters that block these special codes.You create a filter by defining the dialing sequences that are denied. There will alsobe variations of each sequence that you will want users to be able to dial. Sequencesthat can be dialed are called overrides.Once you create the filters, you can assign the restrictions to a telephone(Terminals & sets), to a line (Lines), to a particular line on a telephone (Terminals& sets), and to remote callers (Lines, Remote access).Note: Filter 00 cannot be changed; filters 02—04 have default settings; seeDefault filters (North America) on page 125.To program a restriction filter:1. Choose Services, Telephony Services, Restriction filters.2. Expand the restriction filter you want to program (Filter 00-99). Click on theRestrictions heading.3. Click Add above the navigation tree to enter a restriction for each filter.The Add restrictions dialog box appears.Restriction FiltersFilter 00-99RestrictionsRestriction 01DigitsOverridesOverride 001Digits
