MicrosoftI have been a part of this thread for years and always use KruthikaPonnusamy summary list at the top to inform clients what functionality they do/dont get if they choose to use 3PIP / SfB phones. Yesterday's announcement regarding extended support timeline for 3PIP phones -AND- Teams Support for SIP phones (mind blown!) is below FYI:
"We also realize that being able to use existing hardware can provide important cost savings when moving to a new phone system. Today, we are announcing extended support for Skype for Business (3PIP) phones beyond 2023, so you can continue to use your existing Skype for Business phones as you move to Teams. Additionally, we will be supporting core calling features on SIP phones from Cisco, Yealink, Polycom, and others with Teams. Support for SIP phones will be available in the first half of 2021." https://www.microsoft.com/en-us/microsoft-365/blog/2020/08/03/take-communnext-level-microsoft-teams/
