In one embodiment, a method includes receiving data that indicates a maximum number of end nodes with which to set up real-time data sessions that is less than a conference number of nodes whose data is mixed in a single real-time data conference. Real-time data sessions are established with a connected set of a connected number of nodes not greater than the maximum number. A mix of the real-time data received from the connected set is presented to a user of the first node. Local real-time data is received from a user. The received real-time data is distributed by mixing and sending. This includes, for each individual node in the connected set, mixing received local real-time data with real-time data received from other nodes in the connected set different from the individual node to form individual mixed real-time data, and sending the individual mixed real-time data to the individual node.