| 摘要 |
Radio system infrastructure equipment is provided which comprises base station transceiver equipment for communication with a mobile transceiver (20) and diagnostic transceiver equipment (35) associated with the base station transceiver equipment for generating test signals and feeding them to the base station transceiver equipment. A loopback facility is provided within the infrastructure equipment for looping back a signal received from the diagnostic transceiver equipment at a point within the infrastructure equipment. This signal is returned to the diagnostic transceiver equipment, where it is tested, for example by comparison with the original signal, and faults are diagnosed. |
