Infonetics Research put out a report stating that the VoIP services market is nearing the $50 billion mark and called it a "breakout year for SIP trunking."     

According to the report, “The VoIP service market weathered the economic turmoil of the last couple of years, and, with increasing customer adoption, reached $49.8 billion in 2010 (compared to $34.8 billion in 2008). While the residential services segment remains the largest of the market at 69% of total revenue, business VoIP services are growing at faster rates; a notable example: SIP trunking had a breakout year with 143% revenue growth in 2010,” notes Diane Myers, directing analyst for VoIP and IMS at Infonetics Research.

VoIP SERVICES MARKET HIGHLIGHTS

• Infonetics Research forecasts the combined business and residential/SOHO VoIP services market to grow to $74.5 billion in 2015
• Managed IP PBX business VoIP service revenue is expected to more than double from 2010 to 2015
• NTT of Japan retains its leadership as the world's largest residential VoIP service provider, followed by Comcast and France Télécom
• The fastest growing segments of the VoIP services market are SIP trunking and hosted UC telephony
• The number of residential VoIP subscribers increased 19% in 2010 to 157 million worldwide
• Based on healthy demand for cloud-based services, the number of seats for IP Centrex and hosted UC services grew 20% in 2010