In a previous blog post, the ability to use Skype for Business certified IP Phones in a Teams environment was discussed and how users who have migrated from Skype for Business to Teams can continue to use these IP phones to make and receive calls. In this post, we continue the discussion and provide an overview of how Teams users can be enable for enterprise voice. Unlike its predecessor, Teams is a pure cloud service and there are no on-premise Teams servers, and hence majority of the Voice configurations have to be performed in the O365 tenant using powershell. Our tenant has a E5 license which enables the Phone System (formely CloudPBX) feature for this to work, but E1/E3 users can also be enabled via the Add-on license
Just last Friday Microsoft announced in their blog page https://techcommunity.microsoft.com/t5/Microsoft-Teams-Blog/Microsoft-Teams-is-now-a-complete-meeting-and-calling-solution/ba-p/236042 that MS Teams now has all the meetings and calling functionality of Skype for Business Online. The article describes how MSTeams is now a complete meeting and calling solution and a Teams Conferencing Gateway, which allows you to use existing Skype for Business certified SIP-based phones with Teams; and USB HID Support for Teams, enabling customers to answer, end calls and control mute and volume using USB peripherals. In addition, cloud video interop services to support Teams meetings with existing VTC systems are underway with offerings from Pexip, Polycom, and Blue Jeans to be generally available later this calendar year. Of course this does not mean that the roadmap has been competed as there are additional features coming in Q4 of this year as can be seen in the MS Roadmap available here: http://aka.ms/skype2teamsroadmap. The purpose of this blog post is to serve as an add-on to go into detail the configuration of the O365 tenant to allow for calls to work between MSTeams and Skype for Business users.