Consumer VoIP [documento electrónico] : the market opportunity / Mark Main
The basics of voice over Internet Protocol / Frank M. Groom and Kevin M. Groom
The evolving european business broadband market : is broadband on the verge of becoming a utility? / ed. Datamonitor
Wireless internet access over GSM and UMTS / Manfred Taferner, Ernst Bonek
Annual review of communications / IEC - International Engineering Consortium
Ovum forecasts : global IP and broadband markets / Richard Kee ... [et. al.]
IP Interconnect : commercial, technical and regulatory dynamics / David Rogerson...[et. al.]
IP and the intelligent network : the road to convergence: comprehensive report / ed. IEC - International Engineering Consortium
IP voice services : European corporate market forecasts, 2002-2007 / Margaret Hopkins
O mercado das telecomunicações : Portugal 2001 / ed. Maxitel