Polycom (makers of those funky-butt conference phones) came up with the QSX phone which adds remote computer content sharing using Java technology on the remote side.
Here's a quote:
Participants see content in
So, I'm guessing you bring up a Java applet on the remote location to see the same display transmitted over the Web.
Hey... Doesn't the Polycom conference phone look like one of those funky-butt spaceships from War of the Worlds? Coincidence...? I think NOT! ;-)