It is a violation of the adminisitrative code and not a crime so it does not go on your record. Normally when you appear you pay a fine (from $25 to $100)and go home. Just don't ignore it so that a warrant doesn't issue due to your non-apperance.
I agree with the previous answer. However, it should be added that generally, the initial charge is treated as a misdemeanor.
The summons is just that, a summons to appear in court and find out the charges against you. As per the previous, answer this summons should be taken seriously and the likely disposition should be a violation which is not a crime.