(American National Standards Institute) - ANSI creates standards for networking and communications. It is the U.S. representative to the International Standards Organization (ISO)

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(Asynchronous Transfer Mode) - An ITU standard set of communications protocols in which information is transmitted in fixed "cells" of 53 bytes each. Transmission rates supported are typically from 2 Mbit/s to 622 Mbit/s.

In radio wave propagation, attenuation of a radio wave due to dissipation of its energy, i.e., conversion of its energy into another form, such as heat.

The portion of a telecommunications network that connects customers to a local network point of presence. Historically, the cabling between a traditional telephone exchange and customers, but today used very broadly to refer to multiple technologies, including optical fibre, copper and wireless, and including various active electronic elements. In a complex access network, the final leg that reaches the customer is also called the "last mile".

Analogue refers to signals that can represent an infinite range of numbers, as opposed to digital which can only be distinct whole numbers. Analogue data often comes from measurements, like a sine wave. The sound a modem makes over the phone is analogue since it can be any of a number of different frequencies. The fixed-line networks usually transfer analogue data and fax. The GSM networks are Digital.

Any effect of electromagnetic energy on a body that is not a heat-related effect.