Appendix A. ARS and TRS Operation
2.
Table A-9. Example - Origination TRS Level Plan
Originator
TRS Level
338
From the User Needs and Tenant Trunk Groups Worksheets, TRS levels are determined. This list is created
by reviewing the different calling needs and assigning the most restrictions to the lowest TRS level and
working up to the least restriction level.
9
No Restriction
8
7
6
5
4
All long distance calls allowed except special numbers (976, 1900, 411,
operator access, collect calls, etc.)
Allow 911
3
North America long distance calls allowed except special numbers (976,
1900, 411, operator access, collect calls, etc.)
Allow 911
2
Local Calls Allowed
No long distance or special numbers (976, 1900, 411, operator access,
collect calls, etc.)
Allow calls to (205) 555-XXXX, (205) 556-XXXX, and (205) 557-XXXX
Allow 911.
1
911 Only
0
No Outside Calling
DBS 576 (USA), issued January 1999
TRS Level Properties
Section 700 - Operation
576-20-700