This example will be for calling an extension on another tenant. This can be done several ways.
We can use the adding a dial plan example and modify it for this example.
This would require a prefix of 5 followed by 4 digit extensions. The prefix can be any number that you choose to use and the 4 digit extension must match the destination tenant. So if the destination extensions are 3 digits you would use 3 instead of 4.
Be sure to set the Continue dropdown box True
Finally we have the desired dial plan to call from tenant A to tenant B.