In September 2020, Microsoft announced two promotions which entitle Enterprise Agreement and CSP customers to free Audio Conferencing licences. The changes listed on the Product Terms site for 1 February 2021 (http://bit.ly/3prduoo) confirm that these promotions are now extended to 30 June, 2021 from the previous end-date of 31 March, 2021.

Find the original announcement with details of the promotions here: https://bit.ly/33NIFkN.