Installation guide

On-Net Dialing Dialing Plan
6
ShoreTel 14.2 Planning and Installation Guide 115
Figure 17: Configuring dialing plan
4. Click the drop-down menu to the right of the desired digit and select the number of digits you
would like the extension prefix, such as a 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.
5. Repeat this process for any other extension prefixes, unused extensions, or trunk access codes.
6. Click Save to store your changes. The Configure Extension Prefix Warning dialog box, similar to
the one in Figure 18, appears with a list of each of the sites in your system.