I have a protocol document that has the channel up/down and direct channel entry but I do not believe Sony has the other functionality. I've controlled multiple Sony TV's via RS-232 but really have only used them as monitors so have never tried the other commands. I didn't see a way to post that or attach it on a RC mail so if you want it let me know what email address to send it to but I think if you need all of those functions you will have to switch to IR.