Instruction manual

Direct Inward System Access Page 1305 of 3156
Features and Services
Line Lockout
Flexible Line Lockout
The defined Flexible Line Lockout treatment is provided to DISA calls.
New Flexible Code Restriction
If the Direct Inward System Access (DISA) DN has a TLD, CUN, or CTD
Class of Service, calls made through DISA are eligible for NFCR treatment.
Night Service Enhancements
It is not possible to assign a Night Service Group Number to any trunk that is
a member of a route that is set to auto-terminate on a DISA DN.
Pretranslation
Direct Inward System Access calls are automatically assigned XLST 0.
Scheduled Access Restrictions
Direct Inward System Access (DISA) numbers are not assigned to Scheduled
Access Restrictions (SAR) groups and therefore are not affected by SAR
schedules.
DISA can be used to manually modify the SAR schedule, provided that the
correct FFC and Authorization Code are dialed.
Feature packaging
Direct Inward System Access (DISA) is package 22 and has no other feature
package dependencies.
Feature implementation
Task summary list
The following is a summary of the tasks in this section:
1 LD 24 – Configure the Direct Inward System Access feature for a
customer.
2 LD 16 – Define an auto-terminate trunk route for Direct Inward System
Access.
3 LD 14 – Define Direct Inward System Access DNs for trunks in an auto-
terminate trunk route.