Here are answers to some of the questions:
1. How many max PSTN dial-in users are supported for live events?
Teams live events supports PSTN dial-in for presenters in the inner Teams meeting of the live event. If you share the dial-in information with the attendees, you risk the broadcast getting interrupted if the attendee is not muted (as in the initial release the mixed audio from all participants is made part of the broadcast). The max of 250 PSTN users is supported per meeting. If presenters will be dialing in, please share best practices around muting/unmuting with them ahead of the live event.
2. I frequently use Skype Broadcast and I miss a feature that lets me know exactly how many external participants joined the meeting anonymously (No Authentication). Is this possible in Teams?
We have added a feature in Teams live event producer UI that shows the attendee count. If the event has external participants watching the live event, this will be reflected in the count. The event organizer can also download the attendee report from live events resources section in the meeting details UI, to get log of attendees joined for the event. We do have a feature in our backlog that will show 'Total unique attendee counts' for a live event to the producers.
3. Why don't I see Moderated Q & A and live event resources functionality?
This functionality is being rolled out in stages to various tenants. We expect to have the rollout complete for all tenants within next few weeks.
4. How many real-time captions languages are supported in the initial release?
The initial release will support English, Chinese & German as the spoken languages for the captions in the quick start live events. We will incrementally add support for more languages after the release.