Froehlich, Andrew
CVOICE 8.0 implementing cisco unified communications voice over IP and QoS v8.0 : study guide
John Wiley & Sons, 2012
 Buku Teks SO
Davidson, Jonathan
Voice over IP fundamentals
Cisco Press, 2000
 Buku Teks
Voice over IP: systems and solutions
edited by Richard Swale
Institution of Engineering and Technology, 2008
 eBooks
Diah Zakiah
Analisa performansi voice over IP pada local area network
Fakultas Teknik Universitas Indonesia, 2000
 UI - Skripsi Membership
Layanan Intelligent Network (IN) untuk voice over ip (VOIP)
Fakultas Teknik Universitas Indonesia, 1999
 UI - Skripsi Membership