Allow call contacts to be centralized amongst teams or users
The calls tab is per-user. It should integrate to a Global Address Book where contacts can be maintained centrally for all Call users.
For example, A user adds a phone number/contact to their address book. They should be able to add it to a group (i.e. shared) that will show for all users.
This saves duplication of contact information for each individual user.
This should also sync to Outlook contacts.