Cisco Webex - Setting CallTower as the PSTN
In Control Hub, click on locations
Select the location you want to change
Click on Calling
Click manage on PSTN connection
Click edit next to Connection Type
Confirm both statements, then click next
Click Cloud Connected PSTN, then click next
Select CallTower from the list of providers, then click next.
Select CallTower [OneStream] (US), then click next.