Jajah, a voice over internet protocol (VoIP) communication service, has taken in $2.75 million of an anticipated $5 million fourth round of funding, peHUB reports. The Menlo Park, Calif.-based company provides service to millions of users, much like competitors mig33 and Jaxtr. Last April it scored a deal with Yahoo to provide phone-to-PC calling capabilities to the 90 million people who use the search giant’s messenger product.

Jajah has seen impressive growth over the three years since its inception — impressive in the sense that it’s survived the field’s wave of consolidations and closures that knocked peer companies like Yoomba and Jangl out of commission. Last month, it rolled out software for Windows Mobile, Blackberry and Symbian that allows them to make VoIP calls over WiFi or the cellular network. It also released a system that allows any carrier to deliver calling and text messaging services to the iPod Touch, no SIM card required.

At the start of this month, Jajah began a partnership with Bravestorm, developer of the click-to-call BoldCall product. Under the deal, companies using BoldCall will allow visitors to their sites to call live customer service representatives in real time for free via the Jajah IP network.

While the investors in the recent round have not been disclosed, Jajah has been backed by Globespan Capital Partners, Intel Capital, Deutsche Telekom and Sequoia Capital in the past. It previously raised $23 million.