Media Session publication history Date Status 18 September 2023 Working Draft 15 September 2023 Working Draft 12 September 2023 Working Draft 20 September 2022 Working Draft 19 September 2022 Working Draft 13 September 2022 Working Draft 12 September 2022 Working Draft 4 June 2021 Working Draft 4 May 2021 Working Draft 30 January 2020 First Public Working Draft