Re: Over here:
... not sure what you would expect to do at that point... Phone in?
That is indeed usually a viable option these days. Otherwise you continue to follow your flight plan (if filed), join the circuit at the airport keeping a good look-out and wait for red or green light signals from the tower, rocking your wings to acknowledge that you have seen them.
You can also alert radar to your plight beforehand by flying a right-hand triangular pattern to signify transmitter failure, and a left-hand triangle to signify total radio failure.