An IP PBX (Internet Protocol Private Branch Exchange) is a telephone system that uses internet technology to manage calls within an organization. Unlike traditional phone systems, which rely on analog lines, an IP PBX connects calls over a network, allowing for more flexibility and features such as voicemail, call forwarding, and conferencing. This system can integrate with other applications, enhancing communication and collaboration. It supports both voice and video calls, making it suitable for modern businesses. By using VoIP (Voice over Internet Protocol), an IP PBX can reduce costs and improve efficiency in managing communications.