Transmitting data between several devices involves connecting communications paths to devices via switching unit that ensures no data transfer during changeover

摘要

The method involves transferring data between first (10) and second (14) units and between the second and third (12) units in first and second modes respectively. In the two modes the communications paths leading to the communicating units are connected via a switching unit (32) that ensures that no data are transferred during the changeover process. Independent claims are also included for the following: a switching unit and a data communications device.