A system and operation of the system for improvement of transmitter and receiver frequency accuracy for a local radio communication unit that communicates digital data with a remote communication unit. Multiple fault zones are configurable in the chip multiprocessor, each fault zone being logically independent from other fault zones. The interval of the CV packets, consequently the frequency for sending CV packet, can be any interval that makes the switch-over time for a protected substantially real-time connection achievable. In the known fabricating process of integrated circuit, the heat slug and the antenna can be combined in a module at the same step. The turbine section includes at least a low-pressure turbine and a high-pressure turbine, and a ratio of a number of stages in the low-pressure turbine to a number of stages in the high-pressure turbine is 2.