I'm trying to place a call between two UK Numbers, both my code and https://developers.ringcentral.com/api-reference/RingOut/createRingOutCall return status InProgress but neither phone rings.
My best guess is that my sandbox has a US number. If this is the problem how do I create a sandbox with a UK number?
If not, any idea what the problem might be. In the api ref, I populated only the two and from numbers (have tried formatted like +44XXXXXXXXXX, with and without +, with and without country code), and the country code (44, tried with and without +)