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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. 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).
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.
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.
