ISKANDAR, Fernando Mu’adz. Sistem Komunikasi Text and Voice Antar Client dan Server menggunakan Teknologi GSM/GPRS Pada Modul SIM 800L. Protek : Jurnal Ilmiah Teknik Elektro, [S. l.], v. 5, n. 1, p. 24–30, 2018. DOI: 10.33387/protk.v5i1.475. Disponível em: https://ejournal.unkhair.ac.id/index.php/protk/article/view/475. Acesso em: 27 may. 2026.