VOIP generated $1.3 bln in 2004, to bring $19.9 bln in 2009

North American VOIP service revenue topped $1.3 bln in 2004, and is expected to soar 1,431% to $19.9 bln in 2009, according to Infonetics Research. The number of residential/SOHO VoIP subscribers in North America is forecast to climb from 1.1 mln in 2004 to 20.8 mln in 2008. Managed IP PBX services, an earlier arrival than hosted offerings and aimed at medium and large organizations, make up just over half of the market in 2004. Business hosted VoIP service revenue will exceed that of managed IP PBX services by 2006, as thousands of small and medium businesses adopt hosted offerings.