Installation guide

114 Planning and Installation Guide ShoreTel 14.2
Dialing Plan On-Net Dialing
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be replicated across an entire department store, nationwide, so that a user who knows the
extension for the automotive department in one city could travel to another city and would know
how to reach the automotive department if he knew the site code.
 Preserve existing legacy dialing plans — To preserve the existing dialing plans when adding
ShoreTel equipment to a deployment with legacy equipment, assign a new prefix to each new site
or to users on the new ShoreTel system.
 Legacy integration via OSEs (Off-System Extensions) — Ability to call multiple legacy PBXs from
the ShoreTel system.
 Multi-tenant — On-Net Dialing allows a landlord to maintain one phone system at a building that
houses two or more businesses or organizations in such a way that neither organization is aware
that the infrastructure or trunk lines are being shared. Despite the fact that both organizations are
in the same building, you can assign different prefixes to each company and could then hide one
organization's phone numbers from the other group so that neither group would see the other.
Configuration
The process of configuring On-Net Dialing consists of the following tasks:
 Planning and configuring the dialing plan
 Adding sites
 Associating an extension prefix with a site
 Assigning user extensions
The following sections include details for each of these tasks.
Planning and Configuring the Dialing Plan
Assigning extension prefixes to a specific digit must be done all at once. Once the dialing plan window,
which is shown below, has been configured and saved, there is no way to make changes to the
extension prefix assignments without erasing the database and starting all over. Therefore, we
recommend carefully planning and reviewing your dialing plans before configuring the dialing plan
window.
Complete the following steps to configure the dialing plan using Director:
1. Launch ShoreTel Director and enter the user ID and password.
2. Click the Administration link to expand the list if it has not already been expanded.
3. Click the System Parameters link and then the Dialing Plan link to display the Edit Dialing Plan
window, as shown below:
Note
ShoreTel’s Small Business Edition does not support On-Net Dialing.
Enabling On-Net Dialing is an irreversible process. It permanently changes the database. Therefore,
plan carefully before proceeding with the configuration.