The conventional PABX system has been revolutionized by the Internet telephony. The fundamental advantages of IP telephony over analogue systems are lower telephone bills and smarter business communications. Maintaining a single converged network, rather than separate voice and data networks, can deliver massive cost savings. IP telephony also eases future growth as it’s simple to add extensions or integrate new sites into an existing network. Regardless of where remote workers are located, they will be able to access the same key services and functionality as their colleagues based in the office enabling you to offer the same seamless service and customer care across your entire organization. The immense features and applications are proposed for producing significant efficiency; like in‐house audio conferencing facilities, fax and TV over IP.