CAN ANYBODY GIVE ME THE CLIFF NOTES ON HOW TO MAKE EACH PHONE RING.... WE JUST ADDED 2 NEW DESKS IN THE OFFICE AND THE NEW PHONES ON THE DESKS DONT RING , EVERYTHING ELSE WORKS PROPERLY, AND IF I TAKE A PHONE FROM A DIFFERANT DESK IT DOESNT RING AT THE NEW DESK EITHER

ANY HELP WOULD BE GREAT

THANKS
MIKE