The wireless communications system synchronizes the current frequency and permits
communication under the DECT protocol between a mobile unit and a fixed base station
with rapid and frequent changes in frequency, as defined for example in the ADCT
protocol. For this purpose a key is derived from the identification code transmitted
by the base station. Lists containing random or pseudo-random frequency sequences
are specified, and one of the lists is selected depending on the key transmitted,
and the corresponding frequencies are used for the frequency change.
