A technique for generating a correlation number for use in lawful interception of telecommunications traffic includes handling one of either a "PDP (Packet Data Protocol) context activation" or "Start of intercept(ion) with PDP context active" event and generating a unique PDP-ID (PDP Context Identifier)...http://www.google.de/patents/US20030101356?utm_source=gb-gplus-sharePatent US20030101356 - Technique for generating correlation number for use in lawful interception of telecommunications traffic
