US Patent 7386114 Distributed session-based data

Session-based data, such as call detail accounting information, is tracked and distributed to a plurality of servers in a distributed telephony environment. One type of session is a telephone call between participants. Session-based data includes information about a session provided by the switches along the media path. Session-based data further includes information related to the session obtained from the application layer (e.g., user input metadata). A network proxy maintains a participant list to which the session data is distributed. The network proxy sends updates to the participants and determines the network status to implement fault tolerance of data distribution.