A method and apparatus for optimizing transmission of data to a plurality of second endpoints in a system wherein a first endpoint is providing data to the plurality of second endpoints each connected by a point-to-point communication channels. This may be useful in teleconferencing applications with...http://www.google.com/patents/USRE40704?utm_source=gb-gplus-sharePatent USRE40704 - System for terminating multicast channel and data broadcast when at least two second endpoints do not transmit positive acknowledgement message to first endpoint
