It depends how your Scopia XT5000 is licensed. Normally (before IPO) it was licensed as a standlone unit. It would need to connect to an MCU (a video gateway). Scopia Desktop web clients connected to that video gateway too.
For the IPO version that's scaled down, the XT5000 has a license that lets you install Scopia XT Desktop on a Windows server and point it to the XT5000 to use as a video gateway. If you have that license, then yes, you can have web browsers join in to a meeting on it.
The one thing I could never figure out was how to have a meeting of web-only people without having the XT5000 in the meeting's video display.