The system uses Automatic Alternate Routing (AAR) and Automatic Route Selection (ARS) to direct outgoing calls:

• AAR to route internal calls that you make within your company network.

  AAR requires a private network to route calls.

• ARS to route external calls that you make over a public network.

  ARS does not require a private network to direct outgoing calls.

  You can use ARS for remote locations of the company that do not have a private network.

Ensure that you dial a Feature Access Code (FAC) followed by the number you want to call before you begin to use automatic routing.

During automatic routing, Avaya Communication Manager does the following:

1. Analyzes the digits that you dial.

2. Selects the route for the call.

3. Deletes or inserts digits required to route the call.

4. Routes the call over the trunks that you specify in your routing tables.

ARS and AAR access the same trunk groups and share the same route patterns and information about call routing.

You can convert ARS calls to AAR calls and vice versa.

The FAC for AAR is the digit 8.

The FAC for ARS is the digit 9 within the US and the digit 0 outside the United States. You can administer your own ARS FAC.

A technician or a business partner from Avaya can help you set up Communication Manager and assign the AAR FAC.