In reply to Jonathan Dixon.

Jonathan - The seamless experience that Snorre is referring to uses CEC2.0. The Room Kit / Room Series endpoint uses the CEC protocol, which is part of the HDMI standard, to communicate with the screen. It uses only the HDMI port in order to do this.
From the API of the codec, you can actually see CEC information regarding the screen; it is a two-way communication between the codec and the screen. If you use the API command "xStatus Video Output" you will be able to see the CEC information.
There is no communication over IP between the codec and the screen, or between the Touch 10 and the screen. It is all done using the CEC protocol over the HDMI cable.
Although we use CEC with many different screen brands, it is only the commercial LG screens where this advanced seamless functionality has been implemented, in a joint engineering effort between LC and Cisco.