82
G l o s s a r y
81
G l o s s a r y
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.
Prepend
- The addition of a prefix, such as an area
code, to a phone number.
RF
- Radio Frequency
Roaming
- The ability to use a wireless phone to make
and receive calls in places outside of the
home service area.
Service Charge
- The amount paid each month to
receive wireless service.
Standby Time
- The amount of time a fully charged
wireless portable or transportable
phone can be on and idle without being
in use. (See Talk Time)
Talk Time
- The length of time a person can talk on a
portable or transportable wireless phone
without recharging the battery.
Vocoder
- Voice Coder. A device used to convert speech
into digital signals.
Wireless
- Radio-based Systems that allow
transmission of telephone or data signals
through the air without a physical
connection, such as a metal wire (copper) or
fiber optic cable.
DTMF
- (Dual-tone Modulated 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. EVRCuses 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.