If you want to join Amazon Chime meetings with video and audio from an in-room system, you need the meeting ID and the Amazon Chime H.323 bridge information.
To join an Amazon Chime meeting using an in-room conference system
Turn your in-room system on and choose Video Conference.
Dial into the Amazon Chime bridge.
When prompted, enter the 10-digit meeting ID from the meeting invite, followed by "#".
To share your screen with other meeting attendees, plug the system cable into your laptop and enable content sharing.