Automatically Calling A Number?

I’m extremely new to ionic and angular.js but familiar with other web technologies.I’m trying to build an OCR based app, the OCR works and alerts the translated image to text on the screen, I then have a button named call that calls the variable of the number that was translated and when clicked it opens the dialer and populates the number field correctly, however I want everything to be automatic,I want to bypass going to the dialer and just calling the number straight, how can I accomplish this?