In this paper, we attempt to revisit the problem of multi-party conferencing
from a practical perspective, and to rethink the design space involved in this
problem. We believe that an emphasis onlow end-to-end delays between any two
parties in the conference is a must, and the source sending rate in a session
should adapt to bandwidth availability and congestion. We present Celerity, a
multi-party conferencing solution specifically designed to achieve our
objectives. It is entirely Peer-to-Peer (P2P), and as such eliminating the cost
of maintaining centrally administered servers.