Mobile telecommunications system

The invention relates to a switching network for a large number of mobile telecommunication device-containing telecommunication systems, said switching network comprising a plurality of data storage units (HLRs) for storing a switching data for one or more mobile telecommunication devices and determining the location of a telecommunication device or a telecommunication device, and a switching device based on stored data on a storage unit (HLR) one or more mobile telecommunication devices for establishing a telecommunication connection. The switching network according to the invention further comprises a register unit (15) for storing the data storage units (HLRs) and associated one or more identifier codes for assigning an identification code, a switching unit for querying the register unit (15) for determining the assigned storage code (HLR) as well as a device for changing the assignments stored in the register unit (15), wherein after determining the attachment means for assigning a data storage unit (HLR) assigned to the authentication code, the bygone unit (15) is bypassed by one or more mobile telecommunication devices by establishing a connection based on the switching data. The invention further provides a telecommunication system comprising a linking network as defined below. ŕ which includes a link network as defined below. ŕ which includes a link network as defined below. ŕ