H. SHAIKH, M. Y. KOONDHAR, M. M. RIND, A. B. M. ARAIN, A. RAZA, & A. W. MAHESSAR. (2015). ATM versus IP for Voice over IP. Sindh University Research Journal - SURJ (Science Series), 47(4). Retrieved from https://sujo.usindh.edu.pk/index.php/SURJ/article/view/5271