A method and apparatus for reducing perceived latency in a group communication network provides for receiving a request from a user of a communication device wishing to initiate a group call, receiving media from the user before completely processing the request, and buffering the received media for...http://www.google.com.tw/patents/US7035655?utm_source=gb-gplus-share專利 US7035655 - Communication device for reducing latency in a group communication network
