What is VoIP?

Voice over Internet Protocol (VoIP) is a transformative technology that facilitates voice communication over the internet by converting sound waves into digital data packets, enabling real-time voice and video calls across IP-based networks. The evolution from traditional circuit-switched phone networks to digital packet-switched systems marked a significant shift in communication, allowing for cheaper and more flexible calls as VoIP uses the same networks as other internet services. VoIP's core technologies, including packet switching, codecs, and Session Initiation Protocol (SIP), underpin modern tools like video conferencing, messaging apps, and mobile networks, making communication faster and more seamless. This blog post highlights how VoIP works, its historical development, and its integration into everyday communication technologies, along with a practical demonstration of using the Vonage Voice API to experience VoIP firsthand.