ISUP:General guidelines for designing highly redundant application (blade failure)

1. The SS7 protocol protects the overall network from link (trunk) failure by automatically re-routing traffic to other links. This is done automatically by the MTP3 layer of the stack providing the proper physical setup (multiple links and optionally links toward multiple STPs.
2. In case of a TB640 blade failure (software, hardware or chassis), the Tmedia SS7 architecture provides a redundant stack on another blade providing the proper setup and configuration. In this way, the call control application only has to access the stand-by board and continue processing as if nothing had happened. [This option is not available to the end-user yet].