Telecommunication Telecommunications 46 Switching systems 44 Engineering & Applied Sciences 41 Computer networks 37 Electrical & Computer Engineering 37 Information technology 35 Examinations 32 Message processing 32 Law and legislation 26 Télécommunications 26 Certification 24 Technological innovations 19 Electronic data processing personnel 18 Telecommunication policy 18 Mass media 17 Routing (Computer network management) 17 Telecommunications engineers 17 Economic aspects 15 Electronics 15 Traffic 14 Communication 12 Internet 11 Management 10 Social aspects 10 Computers 9 Engineering and Technology 9 History 9 Local area networks (Computer networks) 9 Physical Sciences 9