By chance do you have more than just the one ticket in the last two years??
This was the correct one. http://www.mto.gov.on.ca/english/dandv/ ... 10.2.shtml
daggx is correct.. It's not likely that you can go back and fight it.
Make sure you turn your licence in to begin the 30 day countdown on your suspension. The sooner you do it, the sooner the suspension is over. You'll then have to pay the reinstatement fee to get your licence back.