“…Literature review demonstrated that researchers studied on voice calls in different languages, primarily in English and Spanish, but also in German (de Jong Derrington & Homewood, 2008;Deutschmann et al, 2009;Jauregi et al, 2011;Liou, 2012;Milton et al, 2012;Sweeney et al, 2011;Wehner et al, 2011). Study findings demonstrated that SL environment was considered useful by the participants since it was close to real life (Childress & Braswell, 2006;Deutschmann et al, 2009;Iqbal, Kankaanranta, & Neittaanmäki, 2010), it increased student motivation (Wehner et al, 2011), improved language skills of the students (Liou, 2012;Ortega et al, 2010), affected students' participation and loyalties positively (Deutschmann et al, 2009;Peterson, 2012), and provided feedback capabilities (Kaplan-Rakowski, 2011). Furthermore, studies showed that SL had a comprehensive and student-centered structure (Peterson, 2012) and students found the environment as entertaining (Liou, 2012;Peterson, 2006) and useful (de Jong Derrington & Homewood, 2008;Kaplan-Rakowski, 2011;Sanchez, 2009).…”