Patent ID: 11909909
Assignee: TELL-SEC AG
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method for determining, by a server, an originating telephone number of a telecommunications terminal and associating it with at least one file transmitted to the server in the course of an installation of application software on the telecommunications terminal or linked with a download of the application software or included in the downloaded application software, comprising:
selecting a first server telephone number for the purpose of the association to be performed from a set of several possible server telephone numbers;
transmitting the first server telephone number to the telecommunications terminal via data communication, but not by way of a call to the telecommunications terminal, wherein the transmission occurs in the course of the installation of the application software on the telecommunications terminal or with the download of the application software;
detecting a first voice call setup request directed from the telecommunications terminal to the server telephone number, wherein the originating telephone number is transmitted with the voice call setup request;
selecting a second server telephone number for the purpose of the association to be performed from a set of several possible server telephone numbers;
transmitting the second server telephone number to the telecommunications terminal via data communication, but not by way of a call to the telecommunications terminal, wherein the transmission occurs in the course of the installation of the application software on the telecommunications terminal or with the download of the application software;
detecting a second voice call setup request directed from the telecommunications terminal to the server telephone number, wherein the originating telephone number is transmitted with the second call setup request;
verifying that the originating telephone numbers transmitted with the two voice call setup requests are identical;
if the verification is positive, associating the originating telephone number transmitted with the two voice call setup requests with the at least one data,
wherein, in the course of detecting the voice call setup requests, no setup of a call is performed by the server.