CABRERA GONZÁLEZ, Yunior Vicente; GARRIDO GUILLÁN, Danelis; GUILLÁN JOA, Elizabeth. PROPOSAL FOR THE DESIGN OF A PABX USING FREE HARDWARE AND SOFTWARE. Telemática, [S. l.], v. 19, n. 1, p. 1–10, 2020. Disponível em: https://revistatelematica.cujae.edu.cu/index.php/tele/article/view/356. Acesso em: 5 apr. 2026.