You may know telecommunication as the transmission of data across the world – often in the form of words, voice, audio, and video. This can be done through phone, internet, airwaves, cables, or even wirelessly. In this video, you'll learn a simple way to understand this concept through an easy and brief explanation. The sector’s largest businesses are telephone operators, satellite companies, cable companies, and internet service providers. Telecom companies appeal to investors looking for both growth and income.