Are you going to Cisco Live US (CLUS) 2017 in Las Vegas? If so, you might want to come check out my session. It's entitled Number Globalization and Localization for CCIE Collaboration Candidates. But, please don't be thrown by the title. Even though it has CCIE in the title, this session can be super valuable to you if you work with Cisco Unified Communications Manager (CUCM) servers, regardless of your certification level.
This video gives you the details of what you'll be learning:
You can check out the session in the CLUS Schedule by clicking HERE.
Hope to see you in Vegas!