Dual System Cellular Cordless Radiotelephone Apparatus with Sub-Data Channel Timing Monitor

摘要: A cellular cordless telephone may receive calls via a system and on having limited radio coverage area. To reduce the amount of time spent in monitoring sub-data channel area system, timing signal is generated which represents period channel. During monitoring, predetermined number data words transmitted are received. When first received word detected, an allowed value adjusted to be sum product determined detected required for each word. This compared when equals or exceeds value, ceases.