Abstract: In order to re-log cordless mobile parts on at cordless base stations of universal mobile telecommunication systems, particularly DECT mobile parts at DECT base stations of CAP-specific telecommunication systems, without great outlay the stored, logon-specific data resulting from a preceding logon are copied, the copied data are subsequently at least partly processed, and the copied, at least partly processed data are stored as re-logon-specific data.

Abstract: In order to couple further telecommunications terminal end points automatically to a hybrid telecommunications system—in particular an RNT-specific telecommunications system to which a telecommunications terminal end point is connected, an interface structure is in each case created in the telecommunications interfaces between a public telecommunications network and a DECT/GAP-specific RNT system of the hybrid telecommunications system, This interface structure is constructed in such a manner that each telecommunications interface autonomously, for example in accordance with a predetermined calculation algorithm, forms further connection information that is relevant for the telecommunications connection to the other telecommunications appliances, irrespective of the respectively other interface, This is based on first connection information which is stored in the interface and is relevant for the telecommunications connection to one of the telecommunications terminal end points.

Abstract: In an electrical device, for example a cordless mobile part (MT.sub.me), having an electrical energy store (AKK), for example a rechargeable battery or a battery, in order to indicate neither too early nor too late the "low energy store" state in the interest of utilizing the stored energy optimally and in a standard manner for various energy store types and/or different operating conditions of the energy store, use is made of the characteristic that the gradient at the "voltage knee" of a discharge voltage curve (ESK) of the energy store (AKK) is always the same, irrespective of the respective voltage level on the discharge voltage profile. In this case, at least one characteristic variable (STG, KRU)--for example the gradient, the curvature--is continually calculated in the form of an actual value (ISW, IKW) which indicates the characteristic variable in the discharge phase of the energy store. The calculation is in this case carried out, for example, by linear regression.