On Thu, 16 Apr 2020 01:39:21 -0400, Paul wrote:

That's a bit strange. I would expect Microsoft
is sampling the UserAgent string to achieve that
dastardly ending. As I understand it, both modern
Firefox and modern Chrome have WebRTC, and thus WebRTC
can be used with those browsers. I think I tested
that before my medical teleconference around
a week ago or so.

By Microsoft dismissing other browsers, that's
probably not for technical limitation reasons.
I don't think the browsers have a second method
as a choice. I've heard of something called
"Webex", but haven't found a page with details
of such yet.

Cisco Webex? Where I work, we used to use Webex for our teleconferencing.
We switched to Zoom recently, reportedly for financial reasons, but Webex
was excellent for the 6+ years that we had it.

The way we used it was each of the consultants had a Webex account.
Optionally, we could install the Webex plugin into MS Outlook. Then
whenever you need to set up a meeting you either do it directly from
Outlook or you can go to the Webex website and do it from there. Your
meeting participants don't need a Webex account or any special software.
They just click the invitation that they get via email. I never had anyone
complain that a specific browser didn't work.