VOIP to be $4.1 bln industry by 2010, not $5.4 bln industry by 2008

Frost & Sullivan revised its expectations for VoIP from being a $5.4 bln market in 2008 to being a $4.1 bln market in 2010. Less than 1% of total voice revenue comes from VoIP, and less than 3% of US households have been converted.