"And this is still in the early stages," said Kevin Mitchell, the co-author of the report, in an interview. "The service providers are moving from providing VoIP infrastructure for traffic between carriers. Now they're moving into providing VoIP gear directly to subscribers." Mitchell said sales of VoIP next-generation equipment are growing across-the-board, from voice application servers and session border controllers to softswitches.
While sales jumped 69 percent in the quarter from the same period last year, Infonetics said revenues were up 13 percent from the second to third quarter. Long term, annual revenue should grow to $4.8 billion in 2007, from $1.3 billion in 2003.
Mitchell, who is an Infonetics managing director, noted that telephone-service providers are still spending billions on traditional voice switching, although they would prefer to be spending more on VoIP and less on legacy infrastructure. "Over the next 10 to 15 years, the equipment is eventually all going to be next-gen [for VoIP]," he said. "But billions are still spent on legacy technology for traditional voice switching."
Voice-application servers are beginning to sell in ever-increasing numbers, he added. The leading suppliers in voice-application servers are Sylantro, Broadsoft, and VocalData.