 Unlicensed radio bands that operate at 900MHz, 2.4GHz, and 5.8GHz. ISO (International Organization for Standardization) An organization established to promote the development of standards to facilitate the international exchange of goods and ser- vices and to develop mutual cooperation in areas of intellectual, scientific, technological, and economic activity. ISO Ethernet An isochronous Ethernet standard designed to provide an efficient way to share normal Ethernet and isochronous traffic on a single twisted-pair cable in a local area environment. ISOC (Internet Society) A nongovernmental, nonprofit organization dedicated to maintain- ing and enhancing the Internet. Through its committees, such as the Internet Advisory Board and the IETF, ISOC is responsible for developing and approving new Internet standards and protocols. Glossary isochronous isochronous A descriptor that signifies enabling network characteristics, including the ability to simultaneously transport disparate data types (voice, video, and data) across the same circuit. It also includes the capability to dynamically allocate bandwidth as the application warrants. isochronous data stream A nonpacketized data transmission. An isochronous data stream is a circuit-switched, fixed-rate, continuous data stream, such as voice, video, or real-time sensor data. ISP (Internet service provider) A company that gives users access to the Internet and related services. ISV (independent software vendor) A vendor that develops the applications that ASPs then put up for sale or for rent. IT (information technology) A broad term that describes the computer hardware, soft- ware, and networking industry, including telecommunications and audiovisual equipment. ITU (International Telecommunication Union) A telecommunications agency of the United Nations that was established to provide standardized communications procedures and practices, including frequency allocation and radio regulations, on a worldwide basis. It is the par- ent group of the ITU-T (telecommunication