PERANCANGAN VOICE OVER INTERNET PROTOCOL (VoIP) MENGGUNAKAN VIRTUAL PRIVATE NETWORK (VPN) PADA PT CARE TECHNOLOGIES. techno [Internet]. 2013 Mar. 15 [cited 2026 Feb. 11];10(1):57-64. Available from: https://ejournal.nusamandiri.ac.id/index.php/techno/article/view/560