MR. SACHIN PATEL, M. V. . K. , M. R. P. ,. A Review of Voice over IP Mobile Telephony Using WIFI. International Journal of Engineering and Computer Science, india, v. 3, n. 07, 2014. Disponível em: https://ijecs.in/index.php/ijecs/article/view/1191. Acesso em: 23 jul. 2024.