Method and device for scanning the channels of a radiotelephone network operating in time duplex

摘要

The scanning process is used for scanning radioelectric channels of subscriber equipment in a synchronous radiotelephone network, operating in a time duplex mode. A calling order for successive channels is generated, and this order is different for each subscriber appliance, at least after switching on the last channel of the called order. The channel calling order is determined as a function of the identification number of the subscriber appliance, this number being different for each appliance. The cylic switching between the channels is effected using a ring counter connected via a BCD transcoder to a channel frequency synthesiser.