SYSTEMS AND METHODS FOR A FAULT TOLERANT VOICE-OVER-INTERNET PROTOCOL (VOIP) ARCHITECTURE

摘要

Systems and methods for messaging handling among redundant application servers are described. A method of providing application synchronization among a plurality of servers in an VoIP network environment includes pausing execution of an application on a standby server when the standby server encounters a checkpoint in the application and receiving a first message indicating that an active server reached the same checkpoint in a copy of the application executing on the active server. The method also includes transmitting, from the standby server, a second message to the active server indicating that the standby server received the first message and resuming execution of the application on the standby server.