FIELD: radio engineering, communication.
SUBSTANCE: data transmission device (DUE) for transmitting and receiving data to/from a circuit-switched network (LVN), which is assigned or is a universally useable device (DVG) assigned to a data processing device, for automatically processing data and for transmitting and receiving data to/from the packet-switched network (PVN) and is assigned or can be assigned to the at least one data terminal device (DEE) for transmitting and receiving data to/from the circuit-switched network (LVN), has controllable switch-over means (UMS), which are controlled such that the data terminal device (DEE) which, in the first operating mode is connected through the DUE to the LVN, can be switched from a first operating mode to a second operating mode, wherein the DEE is connected through the DUE and DVG to the PVN, and back.
EFFECT: eliminating logical separation of applications which are based on a circuit-switched network and applications based on a packet-switched network.
196 cl, 4 dwg
