IP telephony refers to the technology for transmitting voice communications over a network using an open standards-based Internet Protocol (IP). Built on the Cisco AVVID network infrastructure,  Cisco IP Telephony solutions leverage a single network infrastructure for the transmission of data, voice, and video traffic to deliver high-quality IP voice and fully integrated communications. Cisco IP Telephony solutions enable enterprises to realize the business benefits of a converged network (increased productivity, business flexibility, and reduced operational costs). IP Telephony solutions are enabled by Cisco AVVID, providing a seamless migration to full IP Communications by interoperating with existing systems and protecting your technology investments. With Cisco IP Telephony, you have the flexibility to choose from a suite of IP-based hardware and solutions that scale to meet your needs whether you are an enterprise campus, branch office, small office, or midmarket customer.