Advanced Mobile Phone System. The original cellular phone technology still in use today.
Association of Radio Industries Business. A Japanese standardization body responsible for the development of next generation cellular systems for Japan.
Central Office. A telephone company facility that houses the local switching equipment and serves as the place of termination for the wires from all telephones in a specified geographical area served by that telephone company.
European Telecommunications Standardization Institute whose mission is to determine and produce the future telecommunications standards. The Institute is composed of over 650 members from 50 countries.
Frequency Division Multiple Access. A data multiplexing method that allows only one subscriber to use a channel at any time.
Global System for Mobile Communications. A digital communications technology developed in the early 1980s which allows roaming throughout Europe.
A North American interim standard for cellular telecommunications based on CDMA technology.
International Telecommunication Union, headquartered in Geneva, Switzerland is an international organization within which governments and the private sector coordinate global telecom networks and services.
Mobile Switching Center, See MTSO.
Mobile Telephone Switching Office, manages the routing of calls between cellular users and the PSTN.
Public Switched Telephone Network. The collection of facilities and switches that provides connections between local, regional, and international telephone and telecommunications users.
Time Division Multiple Access. A digital wireless technology, which allows more than one subscriber to use a channel by dividing the channel into framed time slots and allocating a slot to each subscriber.