Alongside the End of support of Skype for Business Online date of 31st July 2021, Microsoft also announced that
“After the Skype for Business Online retirement date of July 31, 2021, users with 3PIP devices who have been migrated over to Teams Only will be able to continue using their 3PIP devices with a limited set of functionalities until July 31, 2023” Reference, and now the official blog.
What are Skype for Business Online 3PIP Phones?
Microsoft has certified a number of Skype for Business Online Certified phones provided by third parties. Also referred to as 3PIP, for 3rd Party IP Phones.
Vendors include Poly, AudioCodes and Yealink
How do they work with Microsoft Teams?
They work with Microsoft Teams with limited functionality via a cloud gateway service. See this blog for details of what works and what doesn’t.
It now looks like you have 4 years to use these IP Phones with Microsoft teams with limited functionality before they will stop working with Microsoft Teams.
This applies to 3PIP phones and not the newer Microsoft Teams IP Phones.
Another date to consider for those moving from Skype for Business Online or Skype for Business Server and using this type of IP Phone.