Observation
Despite user-to-user permissions "See outgoing and incoming phone numbers", the phone number of a colleague's call partner is not displayed in favorites/monitor.
Only "in call" is displayed.
Example screenshot: Permissions – User to user Permissions – See incoming phone numbers

Example screenshots: estos ProCall – display in monitor/favorites shows "in call" but no phone number


Solution/Procedure
The user's line must be assigned in Business (primary line) or Business 2 (secondary line) for the authorizations to take effect.
Please check whether the affected line in the UCServer is otherwise assigned to the user as Business (primary line) or Business 2 (secondary line).
Example screenshot: Phone numbers – User's phone numbers – Business/Business 2

Possible cause/explanation
The "View outgoing and incoming call numbers" authorization only applies to the call numbers "Business" (primary line) and "Business 2" (secondary line).
For all other lines (Other lines of the user) the number of the call partner is not displayed.
If the call number assignment in the UCServer is changed, the UCServer must be restarted for the change in permissions to take effect.