Use the Automatic Alternate Routing (AAR) Digit Conversion or Automatic Route Selection (ARS) Digit Conversion capability to configure your system to change a dialed number for efficient routing by inserting or deleting digits from the dialed number. For instance, you can configure the server running Communication Manager to delete 1 and an area code on calls to one of your locations, and avoid long-distance charges by routing the call over your private network.