Voice over IP : the global market opportunities / prepared by ICM Global Intelligence
Ovum forecasts : global telecoms and IP markets / ed. Richard Kee, Chris Wright
IP convergence : the next revolution in telecommunications / Nathan J. Muller
TCP/IP network administration / Craig Hunt
Internet core protocols : the definitive guide / Eric A. Hall
IPv6 clearly explained / Pete Loshin
TCP/IP clearly explained / Pete Loshin
Configuring Cisco voice over IP / ed. Keith O'Brien
The business case for next-generation IP networks / David Lewin, John Delaney
IP addressing and subnetting including IPv6
Delivering voice over IP networks / Daniel Minoli, Emma Minoli
IP telephony / International Telecommunication Union