Today, RingRevenue announced it has raised a $4 millon Series B round led by GRP Partners and Rincon Venture Partners. This brings the company’s total funding to $7.6 million since its 2007 founding.

The vote of confidence was based on the value behind its call performance platform, which companies use to augment online ad campaigns. As we’ve written, driving and tracking phone calls makes a lot of sense for companies that convert business over the phone.

RingRevenue currently works with about 25,000 online publishers and about 10,000 advertisers. Its plans for the capital injection include improving its platform, business development and geographic expansion.