Hakim FR, Sugiantoro B. Analysis and Testing of Data Transmission of Providers in Indonesia using GSM and CDMA Modem. IJID [Internet]. 2018 Nov. 28 [cited 2025 Jan. 22];6(1):13-6. Available from: https://ejournal.uin-suka.ac.id/saintek/ijid/article/view/06104