Trinity Convergence, which closed on $5 million in new venture capital in January and named a new chief executive officer shortly thereafter, is expanding its efforts to capitalize on the growing Voice and Video over Internet Protocol marketplaces.

Trinity, which is based in RTP, said Monday that it is expanding its research and development center in Cambridge UK, is opening a sales office in California, and plans to open a sales and support center in Taiwan before the end of the year.

Trinity is moving into a new R&D facility at Cambridge.

“We are delighted with the new facility, which is located in the heart of the U.K. technology corridor and close to several prestigious universities,” said David Brown, of Trinity’s chief technology officer. “We are growing rapidly, and Cambridge offers a talented pool of engineers from which to draw for our on-going product development activities in advanced IP-based telephony technologies.”

VoIP services generated $1.3 billion in revenues in 2004 in the US alone, and revenues are expected to hit $20 billion by 2009, according to new figures compiled by Infonetics Research.

Trinity has developed products under its VeriCall label for VoIP and video applications.

“We have been a pioneer in providing the telecommunications industry with award-winning embedded software for VoIP,” said Ajit Pendse, who took over as Trinity’s CEO in February. He has a strong background in VoIP development and is acknowledged as one of the pioneers in the field. “We have industry-leading products, and we will continue to expand around the globe to secure a leadership position in this emerging market. The new R&D facility will help us to accelerate our efforts to bring Trinity’s innovative solutions to companies everywhere.”

Investors in Trinity include Intersouth Partners, Mid-Atlantic Venture Funds and Core Capital Partners. In all, Trinity has raised $16.1 million.