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Appendix A. ARS and TRS Operation
If the analyze digits table is referenced by a Prefix ID, the system will consider at all entries with the Prefix ID
and analyze any additional digits dialed. The system will look for the longest exact match. If there is an exact
match, the system compares the entered TRS Restriction value to the call originator's assigned TRS level. If the
Restriction value is equal to or greater than the originator's TRS level, the call is denied. Otherwise, the call is
allowed to proceed.
Example TRS Configuration
As an example of setting up TRS, assume that XYZ Department Store is using the DBS 576 PBX.
Situation
This example installation has the following considerations:
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• Only one tenant (one MCO tenant group operation)
• 75 retail floor store phones
• restricted to local telephone use only except for 1800, 1888 and calls to Birmingham, Alabama
where a sister store and many suppliers are located
• restrict special calling numbers (976, 1900, outside operator, etc.)
• 911 always allowed
• 40 general office phones
• long distance allowed during day mode
• restrict special calling numbers (976, 1900, outside operator, etc.)
• 911 always allowed
• 10 purchaser/buyer telephones
• no time restriction
• restrict special calling numbers (976, 1900, outside operator, etc.)
• 911 always allowed
• 25 executive office telephones
• no time restriction
• no calling restrictions
• 2 attendant group phones
• no restrictions during the day
• local calls only at night to prevent abuse
• 7 warehouse phones
• extension and 911 emergency calling only
• Trunks 1-24 are in Trunk Group 1 and are to the local CO for local calls. In addition, long distance
carriers are accessed using these trunks.
DBS 576 (USA), Revised 6/11/98
Section 700 - Operation
576-13-700
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