Your response to Jonathan is exactly what he described. When you click the teams button and enter the microsoft meeting number you are joining via WebRTC, and sharing is not supported. When you dial the SIP URI you are joining via some soft of CVI ga...

Is the device you're trying to call registered to your Pexip environment? Looking at your picture it looks like you're dialing a 10.0 address - funny the remote and callback numbers look the same at the bottom. If it's an internal device why don't yo...

this sounds like a network security issue - is your network 802.1x enabled? If so you will need certs installed on the desk hub to enable it on your network. Try it on an open network (like a home network), if it works in that scenario that's definit...