Sony Ipela PCS-XG80S Operating Instructions Manual page 146

Switches the monitored picture between the remote and local sites." at the
bottom of the monitor.
Each press of the F1 button on the Remote Commander swaps the location of
both pictures.
To switch the display to the received RGB picture
When you receive an RGB computer picture from a remote party during
communication, the instruction "F2: Switches to the RGB monitor screen." is
displayed at the bottom of the monitor. The RGB picture is displayed by
pressing the F2 button on the Remote Commander.
To restore the previously displayed picture, press the F2 button again.
Note
When you connect two monitors and set "Monitor Select Mode" to "HDMI+RGB", you
cannot switch to RGB picture by pressing the F2 button.
146
Switching the Picture Displayed on the Monitor Screen