Bandung, Yoanes, Carmadi Machbub, Armein Z. R. Langi, and Suhono H. Supangkat. “Optimizing Low Speed VoIP Network for Rural Next Generation Network (R-NGN)”. Journal of ICT Research and Applications 1, no. 2 (September 13, 2013): 117-131. Accessed October 15, 2025. https://journals.itb.ac.id/index.php/jictra/article/view/171.