Darmono, H., S. C. Pribadi, and Y. H. P. Isnomo. “Implementation of Two-Way Voice and Text Communication System Using Fiber Optic Media”. Jurnal Jaringan Telekomunikasi, vol. 12, no. 1, Mar. 2022, pp. 40-47, doi:10.33795/jartel.v12i1.257.