Communication is the exchange of information between individuals or systems. It requires a sender, a message, a channel, and a receiver. In telecom, communication is electronic. It travels over wires, fiber, or radio. It carries voice, text, images, and data. It is the purpose of the network.

Communication has many forms. One-to-one is a phone call. One-to-many is a broadcast. Many-to-many is a conference call or social media. Synchronous communication happens in real time, like a call. Asynchronous happens with delay, like email. Each form has different requirements for bandwidth, latency, and reliability.

Elements of communication

• Sender: the source of the message
• Message: the information being sent
• Channel: the medium of transmission
• Receiver: the destination
• Feedback: the response from the receiver

Communication is not just technology. It is social. It shapes relationships, organizations, and societies. The telephone changed how people kept in touch. The internet changed how they work and play. The technology enables communication. The content is human.