For decades, landline phones were the main communication method in homes and businesses, particularly call centers. However, with the advent of innovations in communication technology, many call centers have switched to Voice Over Internet Protocol (VoIP) systems. VoIP offers several advantages over traditional landline phone systems, including lower costs, flexibility, scalability, actionable data insights, and advanced features. With a stable internet connection, a device such as a computer or mobile phone, a microphone, and a VoIP system, call centers can make and receive calls efficiently. The cost savings from switching to VoIP come from the lower rates of VoIP calls compared to traditional landlines, as well as the ability to use existing devices without additional hardware costs. Additionally, VoIP systems provide flexibility in terms of device usage, location, and scalability, allowing call centers to easily adapt to changing business needs. With actionable data insights and advanced features such as IVR and intelligent routing, VoIP systems can help improve call center performance and customer experience.