4.11 Optional Device [5]514 Feature GuideProgramming ReferencesNoneFeature Guide References1.14.1 Paging1.15.3 Trunk Answer From Any Station (TAFAS)1.15.4 Background Music (BGM)NameSpecifies the name of the external pager. As for the available characters, refer to the character code tabledescribed in section 3.2.1 Installing and Starting KX-TAW848 Maintenance Console.DefaultNot stored.Value RangeMax. 20 charactersProgramming ReferencesNoneFeature Guide References1.14.1 Paging1.15.3 Trunk Answer From Any Station (TAFAS)1.15.4 Background Music (BGM)4.11.3 DISA—System Setting [5-3-1]Direct Inward System Access (DISA) enables outside callers to access specific PBX features as if the callerwere an SLT extension user on the PBX.DISA Security ModeSelects the DISA security mode to prevent unauthorized access to the PBX. In Trunk (CO Line) or AllSecurity mode, the caller is required to override security by Walking COS or Verified Code Entry in order toenable the restricted feature temporarily.DefaultTrunkValue RangeNone: Intercom calls and CO line calls can be made.Trunk: Intercom calls can be made.All: All calls are restricted.