To restrict stations from outgoing trunks:
Class
of Restriction Groups form
Assign the COR of the station to a COR Group.
ARS
Routes form
Enter the station's COR Group Number in the COR Group Number field.
ARS
Digit Modification Plans form
Create an instance of the ARS Digit Modification Plans form that has
the trunk access code (normally "9") in the Leading Digits field.
Leave the remaining fields blank.