Telecommunication 145 Telecommunication systems 59 Telecommunications 27 Computer networks 26 Information technology 22 Internetworking (Telecommunication) 13 Wireless communication systems 13 Mass media 12 Mobile communication systems 12 Telecommunication policy 12 Artificial satellites in telecommunication 11 Convergence (Telecommunication) 11 Communication 10 Data transmission systems 10 Digital communications 10 India 10 Signal theory (Telecommunication) 10 Computer security 9 Internet 9 Mathematics 9 Signal processing 8 TCP/IP (Computer network protocol) 8 Cryptography 7 Engineering 7 Optical communications 7 Queuing theory 7 Social Sciences 7 Social aspects 7 Telecommunication-India 7 History 6