The present article concerns the study of turn construction in telephone conversations in Greek news broadcasts. The article is based on the segmentation of discourse in turn constructional units (TCUs) and the analysis of TCU structure as a function of prosodic characteristics of speaker, pause, fundamental frequency (F0), as well as syntactic structure and lexical elements, focusing on turn-taking and turn-leaving. The examination of significant correlations justifies a multifactor model of linear construction of TCU.