Data transmission between mobile telephone and telecommunication device, involves modifying transferred code if telecommunication device is dialed via mobile telephone

摘要

At least one code identifying the mobile telephone (1) and/or a selected telecommunication device (3) is transmitted to the selected telecommunication device over a connection-providing system (2). The system modifies the transferred code if the selected telecommunication device is dialed via a mobile telephone. The modified code is then transferred to the telecommunication device wherein the modified code includes data of current location of mobile telephone. The modified code contains the data of the present position of the mobile telephone.