|
|
3G
is a wireless generation
(including CDMA1XRTT) designed
for high-speed data and
multimedia.
Airtime is the amount of time
a customer spends on a wireless
phone, as soon as the SEND button
is pressed until the call is
ended
CDMA (Code Division
Multiple Access) A digital
transmission technology when each
conversation is digitized and
then coded.
CDMA 1XRTT (also known as
CDMA2000) is the next generation
of CDMA
CDPD (Cellular Digital
Packet Data) Technology that
allows data files to be broken
into a number of packets
transmitted on idle channels of
existing cellular voice
networks.
Cell is a geographical
area, four to 20 miles,
surrounding a radio antenna (cell
site) that facilitates cellular
communications.
Coverage is the geographic
area containing the cell sites
that allow users to make and
receive calls.
Dual-mode wireless phones
work on both analog and digital
networks.
GPRS (General Packet Radio
Service) is an enhancement to the
GSM mobile communications system
that supports data packets useful
for web browsing.
GSM (Global System for
Mobile Communications) is a
digital cellular phone technology
based on TDMA ... predominant
system in Europe and provide
short message service (SMS).
Hand-Off is the transfer
of a wireless phone call from one
cell site to another.
HDML (Handheld Device
Markup Language) is a specialized
version of HTML for wireless
devices.
iDEN (Integrated Digital
Enhanced Network) wireless
communications technology from
Motorola that facilitates voice,
data, short messages (SMS) and
two-way radio in one phone.
Operates in the 800MHz and 1.5GHz
bands and is based on TDMA. Used
nationwide by Nextel
in the U.S.
|
|
|
MMS
(Multimedia Message Service) is
an enhanced Short Message Service
that allows use of graphics,
video clips and sound files.
Packet is a block of
transmitted data. Also known as
frame or datagram.
PCS (Personal Communication
Service) Any digital wireless
service. Originally a term
for digital service offered at a
higher frequency than early
cellular.
PDA (Portable Digital
Assistant)
Roaming is use of a
wireless phone outside the home
service area.
SMS Short Message Service
used in GSM.
TDMA (Time Division
Multiple Access) A digital
cellular transmission method that
divides amounts of time on a
single radio frequency into
parts, then assigns a different
phone conversation to each part,
which allows a larger number of
people to use the cellular system
at any one time.
Tri-mode refers to a
wireless phone that works on
three frequencies, usually 1900
MHz and 800 MHz digital and 800
MHz analog if digital coverage is
not available. Tri-mode phones
are usually required for national
coverage.
WAP (1) Wireless Access
Point is a base station that
plugs into Ethernet hub or server
-- like a cell cite for laptops
and PDA's. (2) Wireless
Application Protocol features
Wireless Markup Language (WML),
derived from Phone.com's
(now OpenWave.com)
HDML -- a streamlined version of
HTML for wireless devices. Some
JAVA-like capabilities
included.
|
Around
Town & Beyond
...
