Configure maximum call settings

External trunk and phone trunk configuration


  • Telephony > Plugin > All permission

You can limit or expand the maximum number of combined active inbound and outbound calls that are allowed on an external trunk or on a phone trunk.

On an external trunk, the Max Calls setting is a per trunk per Edge setting. For example, you can set Max Calls to 100 on a specific trunk on each of four Edges. This setup equals 400 max calls across your environment. On the other hand, setting Max Calls to 0 (zero) will configure the trunk to accept an unlimited number of calls.

Note: If you set Max Calls to 0 (zero), be sure to take into account the concurrent call capacity for your Edge(s). Setting the Max Calls to 0 (zero) will not increase the Edge’s concurrent call capacity. For more information, see Concurrent call capacity for Edge models

For more information on external trunk settings, see the External trunk settings reference.

To configure the maximum call settings:

  1. Click Admin.
  2. Under Telephony, click Trunks.
  3. Click the appropriate tab: External Trunks or Phone Trunks.
  4. From the list, select the trunk you want to configure.
  5. Under the External Trunk Configuration or the Connection Configuration section, click General.
  6. In the Max Calls field, enter the maximum number of combined inbound and outbound active calls.
    Note: The WebRTC phone trunk does not have a Max Calls setting.
  7. In the Max Call Rate field, enter the average number of calls permitted per second. 
  8. In the Max Dial Timeout field, enter the maximum delay allowed before an outgoing call attempt is aborted.
  9. Click Save External Trunk or Save Phone Trunk.