If not all telephone numbers are available for selection, check whether the missing one is already assigned to you. See FAQ article: Assign and sort own telephone numbers Self-Service Portal: My entries in the telephone directory
My entries in the telephone directory
Here you can specify the order in which the desired phone numbers are arranged ‘Internally’, for example in the TU Dresden telephone directory, Webex, or the Outlook address book. In addition, findability can be activated via ‘External’, i.e. for example also for search queries via Google. To do this, click on the “pencil” icon in the “Actions” area.
Note: Phone numbers listed here are always “published internally.” An entry with the status “published internally” is necessary in order to be discoverable.Self-Service Portal: Actions Now select the desired external visibility option for each registered phone number from the drop-down menu and confirm your selection with “Save.” Self-Service-Portal: External visibility