Welcome to covers wireless | glossary – Palm OS Devices User Manual

Page 27

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27

Welcome to Covers Wireless | Glossary

(For an encyclopaedia of commonly-used technical terms, please visit

Whatis.com

)

GLOSSARY

TERMS

DEFINITION

3G

Third generation. Applies to wideband mobile services and
applications. A standard with faster transmissions and the
ability to roam globally.

802.11

A family of wireless specifications developed by a working
group of The Institute of Electrical and Electronics
Engineers. These specifications are used to manage packet
traffic over a network and ensure that packets do not collide
- which could result in loss of data - while traveling from
their point of origin to their destination (that is, from device
to device).

802.11b

Well-accepted standard for Wireless Local Area Networks
(WLANS). Optimized for the unlicensed 2.4Ghz band, with
speeds up to 11Mbps.

802.11g

Pending WLAN standard comparable to 802.11a (for
speeds up to 54Mbps) but operating in the 2.4Ghz
spectrum.

Access Fee

A monthly charge for the ability to connect to a wireless
network (see provider plans). This is assessed monthly
whether the mobile device is actually used or not.

Airtime

Total time that a wireless device is connected or in use for
data/voice.

Bandwidth

A measure of network resource used for transmitting and
receiving data. Measured in kbits/sec. Can be thought of as
the size of a data "pipe".

Bluetooth

A wireless PAN (personal area network) geared for home
and office that allows devices to connect over a short range
(10m) without a line of sight. Uses 2.4 GHz range at 720kps
within 30-foot range.

BPS

Bits per second. Measure of transmission speed or
bandwidth.

Cache

A cache is a place to store something temporarily.
Frequently used data/information can be stored without
being downloaded again from the original server.

CDMA

Code Division Multiple Access is a multiple access
technique, which uses code sequences as traffic channels
within common radio channels.

Cradle

Mobile devices (PDA, phone) are rested on a cradle to
perform synchronizations.

Downlink

Direction of data transfer from the network to the mobile
device.

Dual mode

A term that describes a wireless device or system that can
support two different protocols.

Encryption

Phantomfiber's Wireless Framework is the only true end-to-
end 128-bit encrypted wireless solution commercially
available. The solution is based on 128-bit Elliptic Curve
Cryptography provided by Certicom (the industry leader in
secure wireless information delivery) and provides a secure
delivery method that parallels the most secure internet
transaction servers in existence today. The WAP gateway is
removed from the underlying model that delivers Covers
Wireless to the end user.

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