I'm speculating, but is the rotary dial moving at the correct speed? Can you get your hands on a basic touch-dial phone with a pulse/tone switch, and try dialling out from your line with that, set to pulse, just to confirm whether it's your line or your rotary phone that's causing the problem?
---------- Post added at 10:46 ---------- Previous post was at 10:45 ----------
@ Kymmy ... the original OP posted more than two years ago, he's probably not listening to you
