Patent ID: 8171305

Claim:
A method for authorizing access to a database by a user in a telecommunication network, said method comprising the steps of: connecting a user interface, an access control for the database and an authentication device with each other through a local node in the telecommunication network; requesting by the access control that the user provide a voice sample, comparing the voice sample with a comparative data record, wherein the comparative data record is assigned to the user, and wherein the comparative data record is stored in data storage by the authentication device, releasing or denying access by the user to desired information by the access control as a function of the result of the comparison, wherein the result of the comparison is output by the authentication device over the local node to the access control, wherein the result of the comparison is communicated by the access control to the user over the local node, wherein signals sent by the authentication device are masked out of the signals sent by the access control of the database to the user interface; wherein the telecommunication network is an Integrated Services Digital Network (ISDN); and wherein B-channels of the ISDN network are interconnected in such a way that only a respective receive time slot for signals sent by the authentication device is mixed in the local node with a send time slot for signals sent to a user telephone, in which no authentication signals were received.