Method and system for tapping telephone conversations
AssigneeSiemens Aktiengesellschaft
InventorsBernd Sommer, Ulrich Grote
Life of this patent
Estimating the term…
Abstract
A method and a system for monitoring telephone calls are described. A useful signal (which represents the call information of a telephone call) and a data set (which contains at least one digital subscriber tag) are supplied to a recording center (20). The data set is supplied to a relaying device (28), in which it is compared with stored comparison data sets. If the subscriber tag matches a corresponding comparison tag of a selected comparison data set, a communications link is produced to a monitoring device (36).
Claims24
Method for monitoring telephone calls comprising, in succession, the steps of:
- a) supplying a useful signal which contains the call information of a telephone call, said call information being an actual conversation and a data set which contains at least one digital subscriber tag to a recording centre,
- b) storing the call information in the recording centre in the form of digital call data and the data set associated with such call data,
- c) supplying the data set to a relaying device which is coupled to a fixed network, and is compared there with comparison data sets which each contain at least one comparison tag,
- d) if the subscriber tag matches the corresponding comparison tag of a selected comparison data set, a communications link is established via a fixed network, between the relaying device and at least one monitoring device which is intended for monitoring the telephone call,
- e) supplying the call data stored in the recording centre to the relaying device, and
- f) the monitoring device is supplied by means of the relaying device via the communications link, with a relayed signal which contains the call information.
System for monitoring telephone calls, comprising:
- a recording centre which receives a useful signal which contains the call information of a telephone call, said call information being an actual conversation, and a data set which contains at least one digital subscriber tag and stores the call information in the form of digital call data and the data set associated with such call data, and
- a relaying device which is coupled to the recording centre and to a fixed network which is designed in such a way that, successively:
- a) the data set supplied to the relaying device from the recording centre can be compared with comparison data which each contain at least one comparison tag,
- b) if the subscriber tag matches the corresponding comparison tag of a selected comparison data set, a communications link is produced via the fixed network to at least one monitoring device which is intended for monitoring the telephone call,
- c) the call data stored in the recording centre can be received, and
- d) the monitoring device can be supplied via the communications link with a relaying signal which contains the call information.
Dependencies are inferred from the claim text.