Patent ID: 9602551
Date: 2017-03-21
CPC Classifications: H04L

Claim:
1. A method in an Intercept Mediation and Delivery unit (IMDU) node in a Lawful Interception (LI) network, the method comprising: providing a Law Enforcement Agency with Intercept Related Information (IRI) and Content of Communications (CC) from data traffic in a digital communications network, said data traffic being related to one or more target identities and interceptable by an Intercepting Control Element in a common node of said LI network and digital communications network, wherein said Intercepting Control Element being configured to receive a request to intercept data traffic related to one or more target identities, collect IRI and CC related to said one or more requested target identities, and forward the IRI and CC to the IMDU node of the LI network; receiving the IRI and CC from said Intercepting Control Element; sampling the CC according a certain sampling rate to achieve one or more samples; retrieving and analyzing data packet headers of the CC for locating a block of one or more data packets to be selected as a sample; generating each sample based on the located block of data by gathering data packets having the same timestamp; and forwarding the generated one or more samples to the Law Enforcement Agency.