Planning and Installation Guide Chapter 6: Dialing Plan
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 via the
The process of configuring On-Net Dialing consists of the following tasks:
Planning and Configuring the Dialing Plan
Associating an Extension Prefix with a Site
Assigning User Extensions
Each of these tasks is addressed in more detail below.
Enabling On-Net Dialing is an irreversible process that makes permanent changes to the
database. Thus, you should plan carefully before proceeding with any configuration
18.104.22.168 Planning and Configuring the Dialing Plan
Assigning extension prefixes to a specific digit must be done all at once. Once the dialing
plan window (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.
To configure the dialing plan via Director, follow the procedure below:
Step 1 Launch ShoreWare Director and enter the user ID and password.
Step 2 Click on the Administration link to expand the list (if it has not already been
Step 3 Click on the System Parameters link and then the Dialing Plan link to display
the Edit Dialing Plan window, as shown below:
Step 4 Click on the drop-down menu to the right of the desired digit and select the
number of digits you would like the extension prefix (i.e. site code) to contain.
Extension prefixes can range from 1 to 7 digits in length. The leading digit
determines the length of the prefix. Extension prefixes with different leading
digits do not have to contain the same number of digits.
Step 5 Repeat this process for any other extension prefixes, unused extensions, or
trunk access codes.
Step 6 Click Save to store your changes. The Configure Extension Prefix Warning
window (similar to the one shown below) appears with a list of each of the sites
in your system.