Section 3: FeaturesProduct Description 653Direct Inward System Access (DISA)DescriptionDISA permits outside callers to directly dial system extensions, trunks and selected features. Thiscould help an employee away from the office that wants to directly dial co-workers or use the com-pany’s trunks for long distance calls. To use DISA, the employee: Dials the telephone number that rings the DISA trunk Waits for the DISA trunk to automatically answer with a unique dial tone Dials the 6-digit DISA password (access code) Waits for a second unique dial tone Accesses a system trunk, uses a selected feature or dials a system extensionDISA calls ring system extensions like other outside calls. If an extension has a line key for theDISA trunk, the call rings that key. If the extension does not have a line key, the call rings an idleCALL key.You can set DISA operation differently for each Night Service mode. For example, a trunk can be anormal trunk during the day and a DISA trunk at night. You can also set the routing for DISA trunkswhen the caller dials a busy or unanswered extension, dials incorrectly or forgets to dial.DISA Class of ServiceDISA Class of Service provides features and dialing restrictions for DISA callers. This allows you to con-trol the capabilities of the DISA callers dialing into your system. When a DISA caller first accesses the sys-tem, they must enter a DISA password before proceeding. The system associates the password entered witha specific user number, which in turn has a Class of Service. If the Class of Service allows the action (suchas making outgoing trunk calls), the call goes through. If the DISA Class of Service doesn’t allow theaction, the system prevents the call. The DISA Class of Service options are: Trunk Group Routing/ARS AccessWhen a DISA caller dials into the system, they may be able to dial 9 and place outside calls.Any toll charges are incurred by the system. The call follows the system’s Trunk GroupAccess or Automatic Route Selection - whichever is enabled. Trunk Group AccessDISA callers may be able to access a specific trunk group for outgoing calls through the system. Toaccess a Trunk Group, the user dials Service Code 804 followed by the Trunk Group number (e.g., 1).This allows the DISA caller to place an outgoing call over the selected group. Trunk Group Accessbypasses the system’s Trunk Group Routing/ARS/Trunk Access Maps. As with dial 9 access, any tollcharges are incurred by the system. Also see Direct Trunk Access below. Common Abbreviated DialingThe system’s Common Abbreviated Dialing bins may be available to DISA callers. This couldsave the DISA caller time when dialing. Operator CallingA DISA caller may be able to dial 0 for the system’s operator.Aspire• Available - 15 users, 15 DISA Classes of Service and 200 trunks.