The present article is a synthesis of the phonetic characterization that has had the Chilean Spanish Language from its origins (XVI century) to the end of the colonial period (XVIII century). A documentary corpus of peninsular authors is analyzed as much as "criollos", where the main features that characterize this dialectal variety are shown. The article starts contextualizing the study, then it centers on the characteristics of peninsular phonetics of the population that arrived at the 'Kingdom of Chile', and finally it analyzes the speech of the Chilean "criollos".