Synchronization method and apparatus in redundant time-division-multiple-access communication equipment

摘要

A synchronization method and apparatus in redundant time-division-multiple-access communication equipment, wherein the synchronization between an active circuit and a standby circuit is carried out using a frequency divided signal from the active transmission frame timing signal instead of using the transmission frame timing signal. At timings other than the output timing of the frequency divided signal, the standby transmission frame counter runs independently. Thus, failure of the active circuit has less effect on the standby circuit and switching between the active circuit and the standby circuit can be carried out smoothly.