16.3 Million Consumer VoIP Lines in Service

By the first quarter of 2008, 16.3 million consumer VoIP lines were in service, representing 13.8 percent of all U.S. households, and 27 percent of broadband households, say researchers at TeleGeography.

Those customers--80 percent or so--largely but not exclusively have been gained by cable companies, at the expense of the incumbent local telephone companies.

Since the start of 2005, the RBOCs have lost 17.3 million residential telephone lines, while VoIP service providers have gained 14.4 million new customers.