Método para prover informação relacionada a chamada ou serviço a um sistema de interceptação legal em uma rede de telecomunicações, programa de computador, nó de telecomunicações, rede de tecomunicações, e, método para prover informação relacionada a chamada a um sistema de retenção de dados em uma rede de telecomunicações

摘要

The invention relates to a method of providing call- or service-related information to a Lawful Interception (LI) system or to a Data Retention (DR) system in a telecommunications network. In the method, a node is provided, which is in communication with an interception requesting element of the LI/DR system. At the node, a record relating to a communication involving a target user is generated and finally sent to the interception requesting element. Before sending the record, at the node it is checked whether a unique reference univocally identifying the communication involving the target user is already available to the node and, if not, such unique reference is generated by the node. Finally, the unique reference is included in the record, which can then be sent to the interception requesting element.