"VoIP users take noteyou now command a noticeable share of wireline telephone service in the United States. The Federal Communications Commission reports 21 million subscriptions to Voice over Internet Protocol accounts provided by companies like Vonage, as well as the telcos and cable providers," writes Ars Technica's Matthew Lasar.
"These represented 13 percent of the nation's 162 million wired connections as of December 31, 2008. The overwhelming majority were residential. Only one percent of those VoIP lines served businesses," Lasar writes.
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Over 20 million VoIP subscribers in the United States