You can make domestic and international calls using Upscale. To call from Upscale, you should purchase a number from the list of available numbers and countries.
- Go to Settings > Phones or Settings > Voice
- Click on Add Phones on the top right
- Choose the user for which you want to purchase the number. You can also purchase a number for All users in the organization.
- Choose a Country from the dropdown list
- Select any number as per your choice. If you are unhappy with the listed numbers, you can click on Refresh to get a new list of numbers.
- Click on Purchase
You can purchase multiple phone numbers in a similar way.