The technology that handles audio signals for telecommunication is known as Voice over Internet Protocol (VoIP). VoIP converts analog audio signals into digital data packets, which can be transmitted over the internet. This technology enables voice calls, video conferencing, and various multimedia communication methods without relying on traditional telephone lines. VoIP systems often include features such as call forwarding, voicemail, and video capabilities. By utilizing internet connectivity, VoIP reduces communication costs while providing flexibility, making it a popular choice for both personal and business communications.