Microsoft has enabled a new service called “Common Area Phone”, this way you can enable IP Phones as a generic device. The “Common Area Phone” License contains:
Phone System Skype for Business Online (Plan 2) Let’s create a user I’m creating a IP Phone for my living room.
Make sure you assign the Common Area Phone license.
Now the user is created boot up the IP Phone.
IP Phone & Provisioning In this example i use a Audiocodes 450HD as IP Phone with firmware version: 3.