We use Office365 for email and on-premise Skype for business server 2015 for IM and voice. When we add an online meeting on S4B mac, the "Join by phone" information is not added to the invite. This works fine on Lync 2011. We can add it by copy-paste however the Conference ID is unique and we have no way of getting it.
For us, this is a critical issue affecting our adoption of S4B on mac. Would appreciate some timeframes of when this is targetted for resolution.