Jun 13 2018 09:39 PM
Can we add regular Skype contact to the Skype for Business conference call? I know that SfB and regular Skype users can have a call peer to peer, however, I am not sure if regular Skype user can join an conference call where all other users are using Skype for Business.
Jun 17 2018 11:45 PM
Simple answer is no :)
Best would be to add them trough PSTN or invite them to a Skype for Business meeting so they could join as a guest.
Jun 18 2018 12:14 AM
I agree with @AlexanderHolmeset. Invite users as guests where they join using Skype for business web app (or Skype for business meeting app), or via dialin conferencing.