[1]
C. E. Pardo-García, N. R. Diaz-Leal, and C. Y. Gómez-Llanez, “IP PBX as a communications service integration tool for UFPS based on ITIL best practices”., AiBi Revista de Investigación, Administración e Ingeniería, vol. 8, no. 3, pp. 74–79, Sep. 2020, doi: 10.15649/2346030X.734.