Enable Dual Display for InRoom Link
Admins can enable dual display for their InRoom Link devices. This display setting is supported on both H.323 and SIP protocols.
Note: If no content is being displayed, there may be an issue with your network configuration. Check your NAT firewall rules and outbound proxy to make sure they are not blocking the second video stream. The device should map its IP address and port so they're routable from outside the organization network.