Faced with the emergence of mainframes ensuring high availability; SysperTec Communication has developed software to ensure the perpetuation of electronic banking applications under CICS. This software handles the communication functions and banking protocols. They are dedicated to the handling of transactions integrating CICS applications as a server or as a requester with N simultaneous partners. They are thus capable of integrating standardized cross-currency swap protocols in CICS transactions. They ensure the management of volumes of important transactions within the time requirements of instantaneous responses.