Radio
Morse Code
Two-way radio
Radio broadcasting
Packet radio
Automatic Packet Reporting System (APRS)
Global Positioning System (GPS)
Television
Teletext
Broadcasting
Digital Terrestrial Television
Satellite television / Sky Digital
Telephony
Telephone
Fax
GSM
Mobile phone
Push to talk (PTT PoC)
Short Message Service (SMS)
Multimedia Messaging Service (MMS)
Genera Packet Radio Service (GPRS)
Internet / Internet Protocol Suite (TCP/IP)
World Wide Web (WWW) / Hypertext Transfer Protocol (HTTP)
Social networking
Electronic mail (email)
Newsgroup
Online chat
Instant messaging (IM)
File transfer / File sharing
Webcast
Voice over Internet Protocol (VoIP)
Internet Protocol Television (IPTV)
