Glossary - Samsung SCH-N393 User Manual

Glossary

Airtime - 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 - Compression & Decompression.
Deactivation - The process of rendering a wireless
phone inactive.
132
DTMF - (Dual-tone Multi-Frequency ) You send DTMF
signals when you enter numbers by pressing the digit
keys.
EVRC - (Enhanced Variable Rate Codec) EVRC is a new
global standard for compressing and decompressing
voice signals. EVRC uses a lower bit rate (the number of
bits sent per second) than existing CDMA vocoders,
while providing significant improvements in voice
quality. This technology enables your phone to provide
superb voice quality while benefiting from the ability to
process more cellular voice calls using less bandwidth
than the voice codecs in CDMA networks today.
Frequency - A measure based on time, as one or more
waves per second, in an electrical or light wave
information signal. A signal's frequency is stated in
cycles-per-second or Hertz (Hz).
Hands-Free - A feature that permits a driver to use a
wireless phone without lifting or holding the handset -
an important safety feature for automobiles, tractors
and most other motorized vehicles.
LCD - (Liquid Crystal Display) Commonly used to refer
to the screen display on the wireless phone.
LED - (Light Emitting Diode) Commonly used to refer to
a small light on the wireless phone or on the Desktop
Charger. The LED lights on the phone to indicate an
incoming call. The lights on the charger indicate that
battery charging is taking place.
G G l l o o s s s s a a r r y y
133