The Dial Plan feature supports intra-server dialing for extensions at the main server and extensions at remote locations. To support inter-server dialing, Communication Manager uses the uniform dial plan (UDP) to route a call from the local server. With the Dial Plan feature, you can set extensions of a maximum of 16 digits. To extend the extension length to 18 digits, you can uniform dial plans.

To preserve the dial plan for extensions and attendants in a multiple independent node network that is being migrated to a single distributed server, Communication Manager provides the Multi-location Dial Plan feature.

To assign short extensions to different branches and administer the same numbering format across all the branches, you can use the Per-Location Dial Plan feature.

Define the dial plan information for each type of call, including:

• Attendant

• Automatic Alternate Routing (AAR)

• Automatic Route Selection (ARS)

• Dial access codes, including feature access codes (FACs) and trunk access codes (TACs)

• En bloc extensions (enb-ext)

• Extensions

• FACs only

• Prefixed extensions

For more information about the dial plan feature, see Avaya Aura® Communication Manager Feature Description and Implementation.