MicrosoftFound this thread yesterday and it has been a fascinating read. We have Poly VVX 411s and migrated from SfB to Teams in Jan. this year. All users are now Teams only. Our IT staff have all migrated to headsets working with the Teams desktop client. We'd like to move all users that direction but will always have some users that "require" a handset. As new phones are needed we've moved to CCX 400/500/600s but we can't replace 1600 VVX 411s at once. About 2 weeks ago, some 411 users reported they could no longer add a 3rd user to an ongoing call. I've tested and when using the 411, adding another caller shows "Connecting to Conference" followed by "The conference service is unresponsive. Try again later." Tapping Meet Now on the 411 has the same result. Is this expected behavior for a 3PIP phone or do we have something misconfigured with our Skype to Teams interop? Looking at https://docs.microsoft.com/en-us/microsoftteams/teams-and-skypeforbusiness-coexistence-and-interoperability, is this what is meant here?
Our 411s are on FW 6.3.0.14929 and paired with the user's device using BToE 4.3.
Thanks in advance. Many of the issues and solutions discussed in this thread mimic what we've experienced since moving to Teams.
