Global Europe Lawful Interception Market Size, Trends & Growth Opportunity, By Network Technology (Voice-Over-Internet Protocol (VoIP), Long Term Evolution (LTE), Wireless Local Area Network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX), Digital Subscriber Line (DSL), Public Switched Telephone Network (PSTN), Integrated Services for Digital Network (ISDN), Others), By Device (Me