Investigation of SIP Signaling Messages Servicing Time. Elektronika ir Elektrotechnika, [S. l.], v. 114, n. 8, p. 35–38, 2011. DOI: 10.5755/j01.eee.114.8.692. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/692.. Acesso em: 5 dec. 2025.