Fred Franks Well although it is not clear I was able to set myself as a TeamsOnly user for getting the phone to sign in. All labeling and indications are that I am actually signing into Skype but it does connect to Teams. I am not thrilled with the InterOp though. Many times people in Skype are not receiving messages but e-mails telling them I am trying to reach them in Teams and they should install Teams to reply. I know this is MS way of promoting but it is confusing a lot of staff that are not part of Teams pilot. Since I am IT support I have to interact with staff every day and to set myself in Teams only mode to get the VVX310 to ring is something I may not stay with much longer. I feel I had a better experience in Islands mode and running both SfB and Teams clients.