Depending on the model, your DECT Handsets can be subscribed from 2 to 15 different systems. Please refer to product overview for more information. Some older types of handsets cannot automatically change location via "Auto Login", but there is the possibility of establishing a manual login as soon as you enter the coverage area of the other system. If you are in possession of an older version of handset without this facility, it can be upgraded. For upgrading, please contact your local distributor or installer.