If you look at the actual DirecTV remote, you'll notice that there are no Page Up/Down buttons. — Staff replied: “Yes. So in other words the buttons are already there because DirecTV uses the same command, same code, same everything, from Channel Up/Down to provide Page Up/Down.”
Roomie Staff
2013-03 · older version
If you look at the actual DirecTV remote, you'll notice that there are no Page Up/Down buttons. Instead, the Channel Up/Down buttons have a little word "PAGE" on them which means that they serve a dual purpose depending on what screen you're looking at in the DirecTV receiver's user interface.