Appendix A: Network Examples 333P0911588 Issue 01 Enterprise Edge 2.0 Programming Operations GuideEnterprise Edge securityProgramming provides several ways of protecting Enterprise Edge fromunauthorized access or use. For more information on features that provide restrictedaccess to your Enterprise Edge system, refer to:• Class of Service on page 333• Restriction filters on page 333• Direct inward system access (DISA) on page 335Class of ServiceClass of Service (COS) refers to the capabilities that Enterprise Edge provides tousers who access the system from the public or a private network. The COSincludes:• filters that restrict dialing on the line• an access package, which defines the set of line pools that may be accessed andwhether or not the user has access to the paging feature.The COS that is applied to an incoming remote access call is determined by:• the filters that you apply to the incoming trunk• the COS password that the caller used to gain access to Enterprise Edge.In cases where DISA is not automatically applied to incoming calls, the remotecaller can change the COS by dialing the DISA DN and entering a COS password.To program COS passwords, see COS Passwords on page 160.Restriction filtersRestriction filters can be used to restrict the numbers that may be dialed on anyexternal line within Enterprise Edge. Up to 100 restriction filters can be created forthe system. A restriction filter consists of up to 48 restrictions and their associatedoverrides.To restrict dialing within the system, you can apply restriction filters to:• outgoing external lines (as line restrictions)• telephones (as set restrictions)• external lines on specific telephones (as line/set restrictions)Restriction filters can also be specified in Restrictions service for times when thesystem is operating according to a schedule. See Restriction service on page 141and Restriction filters on page 124 for more details. Dialed digits must pass both theline restrictions and the set restrictions. The line per set (line/set) restrictionoverrides the line restriction and set restriction.Line and set restrictions are shown in Line restriction example on page 334 andRemote line restriction example on page 334.
