We should be able to delete call history to keep the UI clean and usable.

How about recording an audio call when initiating a Teams call, similar to how Skype for Business does ?

When someone calls me, either internally or externally, and I'm on another call, the default behavior should send the call to voicemail after popping a notification and perhaps a subtle ring. This business of ringing more than once when I'm on a call is not helpful.

Allow users to send and receive SMS/MMS messages from within Teams on the desktop and mobile app to the Office 365 phones number. This would be a great help for our field technicians in actually adopting a phone system rather than using their mobile phone. The MMS part of this would be fairly important in our use case.

Support call controls for popular 3rd party headsets (handup, mute) like Plantronics 740-M or Jabra.

When a PSTN user calls you on Microsoft Teams, if the number is in the address book I would like to be presented with the users name on the toast, not just the PSTN number. The same for call history or anywhere else a PSTN number appears in the client

In Skype for Business and most other phone systems, you can select to transfer a caller directly to voicemail (receptionists use this all the time). Teams does not have this option. It is very important for folks to not transfer to a ring-ring-ring experience if they simply need to leave a voicemail.

Add Click-to-dial for tel protocol. Our staff makes a lot of calls and has to copy and paste phone numbers right now. Would love to see an option for Teams to handle "tel:" protocol or another option for the ability to click-to-dial phone numbers within a web browser. This needs to be supported on Windows and Mac.

Our customer should have a function to switch an active call from the computer teams client to a mobile team client.

for example:
You answer a call at the PC/teamsclient and want to leave your desk and continue the call with your mobile phone/Teamsclient.

Normal call forwarding is not really useful in this case. It would be nice if there was something like a "Switch-Button".

Teams needs an overview, reports, log about the usage of call queues with some basic features like number of calls answered, missed, average waiting time.
Also a list of answered and missed calls.

I have some small businesses who use or want to use Teams as their primary phone system and need AA/Call Queues for some very basic form of "customer service line" (although that term might overstate what they need) and they want to see missed calls so they can return the call.

The new backgrounds are great! However, settings go back to default after the call has ended. Please remember my previous camera background setting so I don't have to set it again every call.
Second choice is to be able to set blur or background before entering the call.

If an incoming call is being forwarded from another user or is being forwarded as part of a call pickup group, this is displayed in the popup call notification, however it is not displayed in the users call history. The calls just show as a missed call.

This is causing confusion for users as they see these forwarded/call group calls as missed calls and then try to return the call.

An additional column or a different 'Type' for these calls would resolve this issue.

As an avid gamer, I feel like we gamers are very good at collaboration.
I would like to have a voice channel much like to see a passive voice channel where your team members can join and passively talk to each other as they work Much like how discord or team speak works in addition to what already exist in teams. This also will break up the monotony of needing excessive Skype meetings. For people whom work in the department, but are Geographically separated, and cant getup from their desk to just ask a teammate a simple question.

Am I the only one finding it painfull that the chat history DOES NOT include call logs?

I want to be able to reconstruct to whom I talked how long. As a workaround I started to use Skype again or quit the Teams calls and call back the people by phone.

In Skype this feature helped me a lot when I tried to reconstruct to whom i spoke on days where things became crowded.

Please implement that feature asap!

All of us who are starting to use teams are facing the same issue...there is no way to control the volume on the teams calls

There is a bug that USB headsets are not recognised if they are plugged in after Teams has started. The list of audio devices doesn't change even once the OS has recognised the headset and it is working, so there is no audio in a call. The only way to get Teams to recognise it and work with it is to quit out and restart the program, then it works fine.