At EC19, Yealink announced a partnership with Ribbon to deliver PSTN survival with Microsoft Teams for their Teams Phones. I don’t have a Yealink, but I do have a few VVX’s lying around my home office, so I thought I would give it a shot and see if I can get this working on other…
— Read on blog.valeconsulting.co.uk/2019/03/28/pstn-survival-with-microsoft-teams-polycom-vvx-and-ribbon-sbc/