when I press Ctrl+Alt+F{1..12}, it switches me to other virtual terminal.
When I have VNC/rdesktop client (and there it is VMWare/Virtualbox with other Linux) I want to switch virtual terminal remotely, but just pressing Ctrl+Alt+F1 switches things locally.
VirtualBox/VMWare often provides special means to send Ctrl+Alt+Del, but not Ctrl+Alt+F1.
(I already know that I can log in over ssh and chvt)
Even xte "keydown Control_L" "keydown Alt_L" "key F1" "keyup Alt_L" "keyup Control_L" leads to local switching to vt.