Adsens with other ADS network

Hi,
I was searching on google and here at search but i cant find correct answer but i think its simple so here is it.
I know i can have maximum 3 of google ads on single page, but can i have for example, 2 of google and 2 of some other CPM ads that is different than google !?
Does that violate term "no more than 3 ads per page" !?

See original post by neobih