Have you added and selected a preferred device?
If no device location has been added (e.g. mobile or landline) and then selected, calls don't have a destination to route to and will go directly into voicemail or fail.
As per the guide do NOT use 'Work Phone' as a destination. Your ONS number is not a destination.
You can find out how to add and select a device by following the guides on this link - Guides
If you are continuing to have problems with people getting through please contact us. We will need you to provide us with the details of the person/s who have tried to contact you as well as date/s and time/s so we can investigate this further.
You can contact us by emailing cuh.ucservicedesk@nhs.net