24 DBS 576 (USA), issued January 1999 576-20-700Chapter 3. System Features Section 700 - OperationHardware Requirements• See Section 520 - Built-In ACD Reference Manual.Related Programming• See Section 520 - Built-In ACD Reference Manual.Considerations• For more information, see Section 520 - Built-In ACD Reference Manual.Automatic Route SelectionDescriptionWhen Automatic Route Selection (ARS) is enabled, the system follows a preselected route for calls.Usually the selected routing is the least cost route.ARS works in conjunction with Toll Restriction Service (TRS). Calls can be denied based on theprogrammed TRS level for the originating party. (For more information, see “Ringing Modes” onpage 63.)• Three levels of ARS checking are available based on the dialed number following the ARSaccess code:• Direct Route Selection: The simplest form of ARS routing that upon ARS entry(enter 9) directly selects the trunk group and any dialed number modification.• Route List Selection: A more complex routing that includes up to 5 alternativelevels of route selection and includes TRS level checking.• Time List Selection: The most complex routing that determines the appropriateroute list based upon the day and time.• Forced ARS is available on an Extension Class of Service (COS) basis.• A special day list provides tailored ARS routing for up to 20 holidays, vacation days, etc.• Automatic modification of dialed numbers is available. This includes deleting up to 24 prefixdigits and adding up to a 10-digit prefix and a 10-digit suffix. The modification of dialednumbers can include pauses, Dual Tone Multifrequency (DTMF) conversion, itemized code(extension number) and an authorization code. (Itemized code and authorization are not usedin some areas.)• Up to 8 authorization codes are available.• For more information on ARS/TRS, see Appendix A “ARS and TRS Operation” on page 313.Hardware Requirements• N/ARelated Programming• N/AConsiderations• N/A