Aqrizal, M. Aqsha, trans. “Comparative Analysis of Voice Call Service Quality Between CSFB and VoLTE Technologies”. International Journal of Wireless And Multimedia Communications 2, no. 1 (February 27, 2025): 45–51. Accessed May 24, 2026. https://jowim.org/index.php/jowim/article/view/81.