You need to put a room online.
A service, a meeting, a class. Video and audio to people who are not in the building, without asking them to install anything or sign up for a third-party account.
What you get
A media server of your own
Bought per site and running as your own instance, not a shared room on someone else's service.
Chat that is on the record
Text lives in a channel you can moderate and read back afterwards, which matters when the audience is a congregation or a class.
Native apps too
Calling works from the browser and from the iOS, Android, Mac and Windows apps.
A media server is an add-on to a chat server, and both are billed monthly for as long as they run. Bandwidth is metered. This is the most expensive thing on the platform — check the numbers before committing to it.
Talk it through first.
Tell us the size of the room and how often, and we will give you a real figure.