AbstractLANs are used to achieve mutual communication among microcomputers and workstations and their wiring flexibility with terminals is becoming a necessity. However, the wiring flexibility of a bus‐type twisted pair LAN is low because of limited tap connection.Although the equalization of a transmission line is necessary to improve wiring flexibility, a long sequence of training signals (more than a kilo bit long) must be sent before data transmission. Therefore, the transmission efficiency becomes significantly low in the case of a short data transmission such as in an LAN, and hence the application of conventional equalization techniques becomes difficult. Thus, wiring system technology to improve wiring flexibility becomes important in a private network system.This paper proposes an asynchronous correlation receiver which improves wiring flexibility for a bus‐type twisted pair LAN by allowing taps. Hence, a received waveform is decoded by pattern matching between the received waveform and the reference waveforms. The reference waveforms are stored in a memory in a prior training period using the multiple sampling method.Several experiments are carried out and their results revealed that the training time can be shortened (e.g., to 19 bits), the required clock accuracy is well realized by an ordinary crystal oscillator, and the transmission error rate can be made less than 10−6under the worst transmission condition for a bus‐t