FreePhone includes a number of interesting features
Management: Support for
multiple concurrent unicast and multicast conversations,
FreePhone "white pages" on the Web, simple call protocol.
High quality audio capture: Up to CD/DAT stereo quality
capture, wide panoply of coding schemes.
High quality restitution: 3D/spatial rendition of
audio sources (this feature is used in conjunction with the
MiMaze distributed (multicast) game to enhance the sense of
immersion in the game and to add live 3D voice interaction between
players -- however the feature is not available on the public release
of FreePhone yet).
Adaptation to network conditions: Includes a rate control
mechanism (adaptation to available bandwidth), a FEC-based error
recovery scheme (adaptation to and recovery from loss process in
the network), and an adaptive playout adjustment scheme (adaptation
to delay variations).
Some of the work on FreePhone has been carried out within the
MICE and the MERCI projects, and is
being carried out in the new MECCANO project.