Wardi, Wardi, 		Basri Hasanuddin, Zulfajri, 		Andani, Andani, 		Jo Salli, Jeffry, DAN 		Muhammad Syafaat, Andi.
" Improving Network Performance of IP PBX Based Telecommunication System" <em>Lontar Komputer : Jurnal Ilmiah Teknologi Informasi</em> [Online], Volume 11 Nomor 2 (22 August 2020)