Video Conferencing that Goes Where You Go. Connect securely regardless of device, including standards-based SIP or H. 323 (Lifesize, Cisco, Polycom, Avaya (Radvision), etc). Multiparty call escalation. presence, text chat, content sharing, and an invite-a-guest feature, ensure that you will never need to compromise your video conferencing experience just because you're on a desktop or mobile device. View the full list of features on www.lifesize.com/clearsea. Signup for a free trial on www.lifesize.com or contact your IT administrator for information about your organization's video infrastructure. NOTE: Lifesize ClearSea client can be used with Lifesize ClearSea server or Lifesize UVC ClearSea server. Feature set may vary depending on the product. when deployed with Lifesize UVC Multipoint.