Glossary
164
Deactivation
The process of rendering a wireless phone inactive.
DTMF
You send DTMF signals when you enter numbers by
pressing the digit keys.
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.
Prepend
The addition of a prefix, such as an area code, to a
phone number.
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)
Glossary
165
Talk time
The length of time a person can talk on a portable
or transportable wireless phone without recharging
the battery.
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.
