Droplet Technology has acquired privately-held Sipcall. Christian Rees, Sipcall's President and Founder, has joined Droplet as Director of Service Platforms. Financial details of the deal were not announced.

In April 2008, Sipcall launched "Hipsip," a mobile data service that allows users to make carrier-friendly VoIP calls worldwide from any mobile phone's web browser, using only their local mobile calling plan. Droplet has already begun integration of the Sipcall SIP infrastructure into Droplet's interactive mobile video service platform.

In order to meet consumer and enterprise demand for higher quality interactive video across a wider range of devices and networks, communication service providers worldwide have made significant new investments in IP Multimedia Subsystem (IMS) network infrastructure. SIP is the Internet-derived standard used for setting up IMS calls and multimedia streaming sessions over IP networks. Working in close collaboration with leading mobile operators, Droplet is the first company to combine state-of-the-art all-software Internet video and voice technologies with an industry-standard IMS framework to enable interactive mobile video services that can run on virtually any camera-enabled 2.5G or 3G handset, as well as on any PC with a webcam.