Which technology uses the Internet Protocol to deliver voice information in digital form using packet switching?

The technology that uses the Internet Protocol to deliver voice information in digital form via packet switching is indeed Voice over Internet Protocol, commonly known as VoIP. VoIP transforms traditional voice signals into digital data packets which can be sent over the internet. This method leverages the robustness and flexibility of IP networks, allowing for efficient transmission of calls, often at a lower cost compared to traditional telephony systems.

In VoIP, voice information is broken down into small packets, each containing part of the call data, which are then transmitted over IP networks. The packets can take different routes to reach their destination, where they are reassembled back into intelligible speech. This packet-switching technique optimizes bandwidth usage and reduces latency during communication, making it suitable for real-time voice transmission.

The reference to other options provides context: TCP/IP is a foundational protocol suite that enables internet communications but does not itself deliver voice directly. A VPN (Virtual Private Network) is used for establishing a secure connection over the internet, providing privacy and secure data transmission, but it is not specifically meant for transferring voice data. The mention of ATM (Asynchronous Transfer Mode) refers to an earlier technology for transmitting voice and data but is not based on the Internet Protocol, distinguishing it from the