Darmono, Hendro, Simon Calvin Pribadi, and Yoyok Heru Prasetyo Isnomo. “Implementation of Two-Way Voice and Text Communication System Using Fiber Optic Media”. Journal of Telecommunication Network (Jurnal Jaringan Telekomunikasi) 12, no. 1 (March 31, 2022): 40-47. Accessed April 19, 2024. http://jartel.polinema.ac.id/index.php/jartel/article/view/257.