Telephony communication refers to the technology and process of transmitting voice signals over a distance for the purpose of communication. It involves the transmission of audio signals through telephone networks, enabling individuals to communicate with each other remotely.

Here are some key aspects of telephony communication

Telephone Networks:

Telephony relies on a network infrastructure to transmit voice signals. Traditional telephony systems use the public switched telephone network (PSTN), which comprises physical copper wires and circuit-switched technology. Modern telephony systems also utilize digital networks, such as Voice over Internet Protocol (VoIP), which transmit voice signals over the internet.

Voice Transmission:

Once the call is established, voice signals are transmitted in real-time between the caller and the recipient. Analog telephony systems convert voice signals into electrical signals, while digital systems encode voice signals into digital packets for transmission. The voice signals traverse the telephone network and are decoded at the receiving end to reproduce the original sound.


Telephones are the devices used to send and receive voice signals. They can be wired or wireless, ranging from traditional landline phones to mobile phones and internet-based softphones. Telephones convert sound waves into electrical signals that are transmitted over the network and then reconverted into sound waves at the receiving end.

Dialing and Call Setup:

To initiate a telephone call, a caller dials the phone number of the intended recipient using a keypad or touchscreen interface. This initiates a call setup process, where the telephone network establishes a connection between the caller and the recipient’s phone. Call setup involves various signaling protocols and routing mechanisms to ensure the call is correctly routed to the intended recipient.