Voice over IP (VoIP): what have carriers learnt so far?

摘要

Voice over IP's time has finally come: carriers and consumers are increasinglyrnseeing its potential benefits and preparing to make the switch or are already doingrnso, as the raft of recent announcements on the residential and business marketsrnhave shown. This paper examines what carriers have learnt so far from thernexperience and in particular the opportunities and challenges for further growth.