Plantronics + Polycom.
Now together as
sorry to bother you with this question - according to the following Microsoft page certified Teams phones should allow to join Skype for Business meetings.
When opening a S4B meeting on calendar page, I get a (well expected) message popup "Please use Skype for Business to join this meeting. Change it to a Teams meeting to join from this device."
Who's fooling whom here? I'd think, the Microsoft document is skipping the tiny detail about joining S4B meetings while using the S4B profile only, isn't it?