A distributed messaging system comprises a first node including a first messaging platform and a first voice file, wherein the first messaging platform is provided with read/write access to the first voice file. In addition, the system includes a second node having a second messaging platform and a second...http://www.google.com.hk/patents/US6504915?utm_source=gb-gplus-share專利 US6504915 - Multiple node messaging system wherein nodes have shared access to message stores of other nodes
