Ryan McDougall has announced the formation of a new Sourceforge project, called VoIP for Virtual Worlds. The long-term goal is to create an interoperable open-source standard for all virtual worlds.
To help the project find its feet, the initial short-term goal is to create an open-source replacement for the existing Vivox component (SLvoice) that is used for voice in Second Life that can communicate with a SIP-based backend server. Developers who are interested in the effort can start with the project's new mailing list.
We don't presently know if an open-source solution could be fully compatible with the existing voice system in Second Life as the existing system relies heavily on Vivox servers and backend software.
