If an error occurs with OpenTP1 in the running system, OpenTP1 in standby system is automatically selected.

The following shows the errors that triggers the system switchover.

1. System error
   
   • Hardware error or cut of power of the system
   • Kernel error
   • HAmonitor error
   • RS-232C adapter error
   • System slowdown
2. Hardware error
   
   • Logical error for OpenTP1
   • Resource error that prevents continuing the system operation
   • Communication management (such as XNF/S) error
   • Delay of OpenTP1