VoIP and enhanced IP communications services: comprehensive report
International Engineering Consortium
International Engineering Consortium, 2004
 eBooks
Lumentut, Marvy Arnold
Studi perbandingan teknologi voiceover ATM (VOATM) dengan voice over IP (VOIP)
Fakultas Teknik Universitas Indonesia, 2002
 UI - Skripsi Membership
The 1999 carrier IP telephony comprehensive report: technologies, architectures, deployments, and business issues
The International Engineering Consortium
Professional Education International, 1999
 eBooks
Buku pintar internet: TCP/IP: standar, desain, dan implementasi
Elex Media Komputindo, 1998
 Buku Teks
Pembuatan layanan pada jaringan telepon intelligent network dengan pendekatan berorientasi-obyek
Fakultas Ilmu Komputer Universitas Indonesia, 1995
 UI - Skripsi (Membership)