Table of Contents
Advertisement
Glossary
Air Time - Actual time spent talking on the
wireless phone. Most carriers bill customers based
on how many minutes of airtime they use each
month.
Antenna - A device for transmitting or receiving
signals. The size and shape of antennas is
determined, in part, by the frequency of the signal
they receive. Wireless phones and the base
station must have antennas.
Base Station - The fixed radio transmitter/
receiver that maintains communications with
mobile radio telephones within a given area.
(Typically called a cell or cell site)
CDMA - (Code Division Multiple Access) A spread-
spectrum approach to digital transmission. With
CDMA, each conversion is digitized and then
tagged with a code. The mobile phone deciphers
only a particular code to pick the right
conversation off the air. The transmitted signal is
just above noise level across the available
bandwidth.
Channel - Communications signals transmit along
paths called channels.
Codec Coder/Decorder - Compression &
decompression.
Deactivation - The process of rendering a
wireless phone inactive.
DTMF - (Dual-Tone Multi- Frequency ) You send
DTMF signals when you enter numbers by
pressing the digit keys.
125
Advertisement
Table of Contents
