Google has been on the prowl acquiring some strategic companies in what could be termed as the next frontier. After acquring Admob, Techcrunch has reported that it is to acquire VOIP Start-up Gizmo5 for about USD 30 Million.

The deal comes after Skype successfully negotiated a deal with its former owners Niklas Zennstrom and Janus Friis, to maintain full possession of the technology it requires to operate.

Gizmo5, operated by Michael Robertson (of mp3.com fame), was reportedly in discussions with Skype about a potential acquisition should the company lose its legal battle with its former founders. But since that dela has gone through now, Skype no longer requires Gizmo5 as a potential back-up plan.

Google will now set itself up as a VOIP provider to rival Skype, which holds the vast majority of the market and accounts for 8% of all international voice traffic.

While Google already offers a feature for users to speak over the internet via Google Talk/Voice, it does not have the ability to make incoming or outbound calls to “real” telephones – a service Gizmo5 has already established. Interestingly, Gizmo5 has already been integrated with Google Voice, a service that replaces a user’s telephone numbers with a single number for all devices.