# QSS (Quality of Service Subscription) - July 18, 2022

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Original publication date: July 18, 2022

Initial release of **QSS (Quality of Service Subscription)** [real-time
events](/docs/api/qss/events):

-   `meeting.participant_qos`

-   `webinar.participant_qos`

-   `meeting.participant_data`

-   `webinar.participant_data`

-   `meeting.participant_data_summary`

-   `webinar.participant_data_summary`

-   `meeting.participant_qos_summary`

-   `webinar.participant_qos_summary`

-   `phone.call_qos`

Contact [Zoom Sales](https://explore.zoom.us/en/contactsales/) for more information.