I can conduct multisite calls with my Codec Pro Codec (up to four participants), but there's no multisite license in the option keys. How is it possible?

Is it possible to connect from my Cisco Meeting Web App to aliases/spaces which are not registered on a VCS-C but are remote and neighbored via a VCS-E?We can connect via CODEC to aliases/spaces which are registered with a VCS-E that is neighbored to...

Does the Cisco Codec EQ codec allow me to connect one USB cable from laptop to codec and then use my room camera, microphones and speakers to conduct a web conference, such as MS TEAMS, Zoom, etc? Is anything other than the USB cable required?

I am trying to upgrade from Room OS 10.8 to OS 11 but the installation keeps failing. Do I have to step up to OS 10.19 or some higher version of OS 10?