Section 700 - Operation Appendix A. ARS and TRS Operation576-20-700 DBS 576 (USA), issued January 1999 331If the analyze digits table is referenced by a prefix ID, the system will consider at all entries with the prefix IDand analyze any additional digits dialed. The system looks for the longest exact match. If there is an exactmatch, the system compares the entered TRS Restriction value to the call originator’s assigned TRS level. If theRestriction value is equal to or greater than the originator’s TRS level, the call is denied. Otherwise, the routetype and associated pattern # are determined and the system jumps there.Three route types are available. These include the Routing Table (a direct trunk group selection), the Route ListTable (a route priority consideration), and the Time List Table (selects a route list based on date, day of theweek, and time of day).The simplest call routing method is the Route Table. This determines a trunk group to use and, if programmed,a digits modification pattern to use. Up to 24 prefix digits may be deleted, up to 10 prefix digits can be addedand up to 10 suffix digits may be added.If multiple trunk groups are to be considered for the call, the Route List Table is used. This table consists of upto 5 possible routes and an associated ARS level required. If the ARS level for the first priority route is equal toor less than the ARS level associated with the call originator, then the listed route will be tried. If the first listedRoute Table trunk group has no available trunks busy, then the next priority route is considered. If QueuingPoint is set to continue, then the first priority trunks are retried first before trying to a next priority route. If theWarning Tone is enabled, then before a call is connected to a found trunk, a warning tone is sounded to allowthe caller to hang up before the more expensive trunks are used.If time of day, day of week and day of the year need be considered in routing the call, then the Time List Tableshould be referenced first. The Time List Table allows up to 50 patterns to be entered. Each pattern can specifyup to 5 route list patterns to used based on the current time of day.Up to four time list tables may be used. The referenced time list table is determined by the Special Day Table orthe Day of Week Table. This is useful when rates change for certain days (such as weekend rates versusweekday rates).Example ARS ConfigurationAs an example of setting up ARS, assume that Atlanta based XYZ Department Store is using the DBS 576PBX.SituationThis example installation has the following considerations:• 75 retail floor store phones• restricted to local telephone use only except for 1800, 1888 and calls to Birmingham, Alabamawhere 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
