Easy Way to Remove Yourself from Telemarketer Call Lists

My friend Barnacules, who is full of quick and easy tech tips, provided me with this the other day and I just had to share it. Instead of having a "sorry I missed your call," just have it be that old modem sound from the '90s so the caller thinks it's connected to a fax machine or something. Of course you'll have to tell your friends and family about it so they don't get confused, but this should do it!