Four options for defendent
(although it is taken from city of Toronto's website, I believe it would be similar in Ottawa.
http://www.city.toronto.on.ca/court_services/faq.htm)
1. Plea of Guilty - Payment Out of Court
A defendant who has been served with an Offence Notice and chooses not to contest the charge may make payment to the court office on the front of the Offence Notice. The defendant must pay the "total payment" in full. Payment is deemed a plea of guilty.
Payment can be made in person or by mail. If a partial payment is made, or if the defendant's cheque is returned for insufficient funds, the fine will not be considered paid.
2. Plead Guilty with an Explanation
This option is available to defendants who do not wish to dispute the charge, however wish to plead guilty before a Justice of the Peace and make a submission about sentence. You or an agent must attend in person at the court office designated on the back of your Offence Notice. Time and dates are also listed. Upon your arrival at the designated court, you must register your name with our counter staff. Staff will instruct you accordingly after you sign in.
A Justice of the Peace will read the charge to the defendant/agent and register a conviction. The defendant's submissions can only result in a reduction in the fine, or an extension of the time to pay. The conviction is registered with the Ministry of Transportation and demerit points are registered accordingly.
3.Trial Option
Two options are available under this alternative.
1. Scheduling of a trial
The trial option requires you or an agent to attend the court office designated on the back of your Offence Notice to complete a Notice of Intention to Appear (NIA). A trial date will be set and mailed to you within eight weeks of filing your NIA. If you do not receive a trial notice within this period, please contact the general inquiry line at 416-338-7320.
If an agent is representing you, you must authorize the court, in writing, to mail the trial notice to your representative.
2. Scheduling of First Attendance
The City of Toronto is designated under Bill 47 to provide the option of First Attendance. To exercise this option, you must call the court office designated on the back of your Offence Notice to set an appointment to talk with the prosecutor. A hearing date will be provided to you by court staff. The investigating officer does not attend the hearing. At the hearing, your matter may be resolved by entering a guilty plea, in which case you may receive a lesser fine or charge.
If the matter cannot be resolved, your trial option remains available and you can set a trial date. If you have any questions regarding your charge (witnesses or trial procedure) the prosecutor will be able to assist you.
In your case, i think you may want to schedule a trail or first attendance. You may want to consider file a complain against the police officer after you won the case (can not let this guy get away).