Voice-over-IP telephony will grow from approximately 400,000 U.S. homes in 2004 to 12.1 mln by 2009, according to a new report by JupiterResearch. The researchers said VoIP telephony will reach 10% of U.S. homes over the next five years. Additionally, the firm said that 17% of broadband subscribers will sign up for VoIP phone services.