A test download of Voipster is available for download. This company has been largely avoiding the VoIP spotlight since I wrote about them last summer, though they haven't been idle. Some unannounced carrier deployments are ongoing, and the company is pursuing partnerships with ISPs and portals, as well as some interesting developments in various market verticals. I made a test call today with Voipster management (the current version supports conference calling for up to 10 persons) and it sounded great. Apparently the company replaced the GIPS codec they were using with their own, which reportedly handles upstream bandwidth of as little as 22kbps. This is related to the harsh bandwidth demands of some of the markets where they are looking at doing deployments. Only Windows 2000 and XP are supported currently, but the company should release CE and MAC versions in coming weeks.