You can control the dial plan for your Webex Calling deployment. You can customize extension lengths, routing prefixes, and dialing preferences (internal and external) to be compatible with the dialing habits of your users.
These settings are also available in the first-time setup wizard. As you change your dial plan, the example numbers in Control Hub update to show these changes.
From the customer view in https://admin.webex.com, go to , and then scroll to Internal Dialing.
Configure the following optional dialing preferences, as needed:
Specify internal dialing for specific locations. Go to Dialing, and then change internal and external dialing as needed:, select a location, scroll to
Impact to users: