Section 700 - Operation Appendix A. ARS and TRS Operation
576-13-700 DBS 576 (USA), Revised 6/11/98 295

Time List Table

Time List Table is used when the time of day, the da y of week or th e dat e affects the desired route. The Time
List Table allows up to 50 patterns t o be ent ered. Ea ch pat tern may s peci fy up t o five Rou te Li st patte rns to used
based on the current time of day.
Up to four Time List tables may be used. The referenced time l is t table is determined by the Special Day Table
or the Day of Week Table. This is useful when rates change for cert ain days (such as weekend rates versus
weekday rates).

Route List Table

The Route List Table is used when there are multip le route possibilities. Up to 5 possible route table patterns
may be considered in sequential priority when attem pting to find an available trunk. Before a route is tried, the
system compares the route ARS to the originator’s ARS level. If the route ARS exceeds the originator’s ARS,
the call processing will stop and the caller will receive busy tone.
When the call is first presented, the first prior ity rou te is tr ied . If the re is no ava il able tr unk in the fir st rout e and
queuing point is not enabled the system continues to the next priority route, compares the ARS levels and if
acceptable checks for an available trunk. If no trunk is available, it will continue to the next priority trunk, and
so forth until all routes have been attempted.
If an available trunk is found and warning tone is enable, the system will first i ssue a warning tone to the caller
to allow the caller the opportunity to hang up before using a more expensive trunk.
If the queuing point is enabled, the system will wait for an available trunk (beginning with the first priority
trunk) until the queuing point timer expires before moving to the next possible route.

Route Table

The Route Table provides a simple trunk group selection and selects any digit dialing modification needed.
This table is directly referenced when there is only one route to use. It is also indirectly reference from the
Route List Table.

Digit Modify Table

Once a route is selected, the actual dialed digits can be changed based on the Digit Modify Table. Digits can be
deleted from the beginning of the number (such as removing an unneeded area code), digits can be added to the
beginning of the number (such as adding an area code or equal access number) and digits can be added to the
end of a number.
TRS Configuration and Operation
This section provides the following:
An overview of the TRS operation.
An example TRS configuration - This is a simple example intended to introduce TRS planning and
implementation. Example worksheets are included.
Worksheets for planning and implementing a TRS plan.