Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2011-06-28
2011-06-28
Ho, Duc C (Department: 2465)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S401000, C370S468000
Reexamination Certificate
active
07969968
ABSTRACT:
Systems and methods are provided for lawful interception of data transmissions through at least one broadband network. Data transmissions, including voice and data services as well as high bandwidth transmissions such as multimedia and video, are intercepted and routed to authorized agencies such as law enforcement monitoring facilities. The systems and methods also enable interception of data transmissions such as peer to peer type data transmissions that pass through broadband networks from source to recipient without passing through centralized core network elements. These transmissions are intercepted at access points distributed throughout the broadband networks and forwarded to lawful intercept node elements for transmission to authorized entities.
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“Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 20: Lawful Interception; Sub-part 1: CMS based Voice Telephone Services; ETSI TS 101 909-20-2” ETSI Standards, European Telecommunications Standards Institute, Sophia-Antipo, Fr. vol. AT-Digital, No. V112, Oct. 2005—XP014032298 ISN: 0000-0001 pp. 12-31.
“Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 20: Lawful Interception: Sub-part 2: Streamed multimedia services; ETSI TS 101 909-20-2” ETSI Standards, European Telecommunications Standards Institute, Sophia-Antipo, Fr. vol. AT-Digital, No. V121, Mar. 2006—XP014033869 ISN: 0000-0001 pp. 23-39.
“Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 20: Lawful Interception: Sub-part 2: Services not related to E.165 Telephony; ETSI TS 101 909-20-2” ETSI Standards, European Telecommunications Standards Institute, Sophia-Antipo, Fr. vol. AT-Digital, Aug. 2004—XP014034898; pp. 20-34.
De Luca Enrico
Larsson Bengt
Zerbini Ezio
Ho Duc C
Telefonaktiebolaget L M Ericsson (publ)
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