Skip to main content


8x8 Support

How to Configure Cross-Site Dialing in Admin Console


To configure cross-site dialing in 8x8 Admin Console.

Cross-Site Dialing enables users to call by extension between different sites as long as they are configured under the same company (i.e., company's phone system has Cross-Site Dialing enabled). You will need to have administrator rights in 8x8 Admin Console to set up this feature.

Applies To

  • 8x8 Admin Console
  • Cross-Site Dialing



If you require sites with different extension lengths across PBXs, create a case with 8x8 Technical Support to enable.

  1. Log in to 8x8 Admin Console.
  2. Select Sites.
  3. Select Edit (pencil icon) to the right of the site that you wish to edit.
  4. Enter the Site Code under Internal Dial Plan.
  5. Select the desired extension length from the drop-down. You can select an extension of up to nine digits long.
  6. Select Save.

Making Extension-To-Extension Calls with Cross-Site Dialing

Though in-site dialing will remain unchanged, users will have to add the site code before the user's extension to make extension-to-extension calls between sites.

We will use the following Site Codes as an example:

  • Acme Site A: 20
  • Acme Site B: 21

Calling Examples:

  • Within Acme Site A: Sarah dials 1002 to call Jeff
  • Within Acme Site A: Sarah can also dial 201002 to call Jeff
  • From Acme Site A to Acme Site B: Sarah dials 211001 to call Rob