There are a couple of new calling features coming to Teams soon, that will close the gap between SFBO and Teams. You might want to inform users of the following new capabilities:
- Multiple Number Dialing: If a contact have multiple numbers stored in their profile, Teams will allow the user to select a number from the chat header where they can select audio and video calls. Roadmap ID 66194. The feature should be available by the end of August
- Call merging: Allowing users to have multiple 1:1 calls and join them into a group call. Roadmap ID 66054 This feature should also be available by the end of August, and will apply to VOIP and PSTN calls
This is certainly an improvement to the calling features, but there are still some features missing for a full parity between Teams and SFB.