Mitsubishi t300 用户手册
63
G
LOSSARY
Term
Description
AMPS
Advanced Mobile Phone System. Analog system
used in the United States for cellular telephones.
used in the United States for cellular telephones.
Analog system
Variable waveform system of voice transmission
instead of the zeros and ones used by a digital
system.
instead of the zeros and ones used by a digital
system.
Cellular
Wireless communications system that uses many
base stations to divide a service area into multiple
"cells." Cellular calls are transferred from base
station to base station as a user travels from cell to
cell.
base stations to divide a service area into multiple
"cells." Cellular calls are transferred from base
station to base station as a user travels from cell to
cell.
Coverage
Geographical reach of a mobile phone network or
system.
system.
Conversation mode When the phone is making or receiving a call.
DTMF
DTMF
Dual Tone Multi-frequency Tones, or touch tones.
Each key pressed generates a unique frequency
which the phone company recognizes as a
particular digit.
Each key pressed generates a unique frequency
which the phone company recognizes as a
particular digit.
Dual band
Mobile phone that works on different frequency
bands; 800 MHz cellular and 1900 MHz PCS
frequencies.
bands; 800 MHz cellular and 1900 MHz PCS
frequencies.
Dual mode
Mobile phone that works on both analog and
digital networks.
digital networks.
Digital
Wireless communication technology that converts
all voice transmissions to computer language
(zeros and ones, or “binary” language) and then
reconstructs them into the original voice format at
the other end.
all voice transmissions to computer language
(zeros and ones, or “binary” language) and then
reconstructs them into the original voice format at
the other end.
LCD
Liquid Crystal Display. Flat screen used to display
numbers, characters, icons and pictures.
numbers, characters, icons and pictures.
LED
Light Emitting Diode. Light on a handset that alerts
the user of various conditions or functions.
the user of various conditions or functions.
Mobile system
Transmission of radio signals to or from a centrally
located antenna attached to a mobile telephone
switch.
located antenna attached to a mobile telephone
switch.