Security Board

I have a customer who has 3 day cares across the metroplex, he is interested giving access of the certain security cameras to the parents, the question is what type of bandwidth does he require if there are going to be over 20 parents logging in at the same time, with one camera only streaming? what type of system do you guys recommend?

Well a high speed connection is a good start. after that if he has three places for systems I would suggest maybe 3 two camera systems with analog cameras. other than that you don't need much more