12 September 2007
The number of consumer VoIP
subscribers in the United States is estimated to reach 23.3 million by
2011, up from 11.8 million in the second quarter of 2007, according to TeleGeography's "US VoIP Research Service."
TeleGeography also projected that by 2011 VoIP penetration in Europe will be about twice as high as in the US.
"VoIP service in the US has emerged as a mainstream service that
is causing traditional service providers some headaches," said Stephan
Beckert, TeleGeography analyst, in a statement. "However, in Europe,
VoIP could fundamentally change the structure of the fixed-line