The "Verify Call Routing" Feature in Webex Calling Control Hub is similar to the DNA "Dialed Number Analyzer" on Cisco Unified CM On-prem control.
Like the DNA, the "Verify Call Routing" Feature on Control Hub allows you to test and to verify your call routing and your dial plan configuration. For example for calls between Webex Users in the same location or different locations, or for PSTN calls from Webex Users.
For PSTN calls to work you need to link your local gateway or your CUBE with the location if you are using on-prem PSTN provider, or you link the location to the Cloud Connected PSTN.
Locations are the central point of the Control Hub and Webex Calling Architecture.
It identifies the site the users belong to, and provides PSTN calls once the location is linked either to the Trunk to CUBE or to the Cloud Connected PSTN, in addition of others features like Call Permissions.
Once you link the location to CUBE or Cloud Connected PSTN, when Webex Calling receives a PSTN call from webex user in US-Location for example, it checks first if the called number matches an extension's Webex User in different locations that exists on the Webex Calling, if no match is found, it checks the Dial Plan (Similar to Route Pattern on CUCM) if there is a pattern that matches the called number, if no match is found, it uses the CUBE or the Cloud Connected PSTN linked to the location the calling user belongs to (US-Location in the example below).
