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Glossary of Te r m s
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Glossary of Te r m s
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 infor-
mation 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 wire-
less 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.
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.
Voicemail
- A computerized answering service that answers
a call, plays a greeting and records a message.
Depending on the sophistication of the service, it
can notify the subscriber, via a pager, of an
incoming call or message. (Also called voice
messaging)
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.
