Abstract: A process for monitoring analog and digital mobile radio connections is disclosed within the framework of a mobile radio network comprising a number of radio base stations in a mutual spatial arrangement in the form of a cellular system having overlapping radio ranges. A predetermined number of radio ranges, directly adjacent to one another, form a group of radio ranges in which the total number of available frequency channels is repeated. A simple functionally-reliable monitoring system provides that the useful signals transmitted in the specific time slots are radio range related information blocks which are time compressed and delayed at the transmitting end. Data block sequences containing monitoring signals are inserted into the time gaps which arise during time compression. At the receiving end, following the gating out of the data block sequences to a signal processing unit, the compressed received useful signal is fed to an expansion device.