Automatic frequency correction

The method for automatic frequency correction is for use in an existing Digital Enhanced Cordless Telecommunications (DECT) system. The method comprises the steps of measuring a phase difference between an output of two correlators which operate on a received signal and employ segments of a known transmitted waveform separated by a known time difference as reference signals, calculating a frequency offset estimate (54) based on said measured phase difference, correcting said received signal (56) by an amount corresponding to said calculated frequency offset estimate, and repeating said measuring, calculating and correcting steps in a plurality of stages (58-64) in order to achieve a predetermined accuracy of said carrier frequency offset estimate. The method will be used in a DECT system in a Wireless Local Loop application which can tolerate multi-path conditions to provide a reliable telecommunication system for use with both POTS and ISDN services. The system will be easy to install and not require a licence, thus making it less expensive than current cordless telecommunication systems.