A method, computer program product, and data processing system for inserting buffers into integrated circuit routing trees are disclosed. The first station may adjust the carrier frequency of the signals it transmits in response to the estimated carrier frequency offset, andor transmit data to the second station representing the estimated carrier frequency offset. The information may be stored on the central database. When a gear stage for high speed travel is established, no power transmission system is established between the output shafts. Parameters associated with transmitting and receiving may be adjusted by examining the pattern of the received first signal to determine if it has the known pattern of the first signal.