The contacts exists on the Outlook contacts and I can see the caller name on the Skype for Business client and mobile phone but on the VVX 411 only the number is displayed. I would like to see the name of the PSTN callers on the VVX phones screen. Our infrastructure is composed by a local Skype for Business 2015 server and an Online Exchang server with Office 365 (UC enabled). We have some VVX 411 phones with software version 5.6.