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Gemini G3 – User Manual
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Definitions
Item
Definition
AAVL
Autonomous Automatic Vehicle Location. Feature that involves using GPS
(Global Positioning System) signals from the mobile unit by the Host PC.
Access Point
C
ommunication hub for users to connect to a LAN.
ADB
Agile Dual-Band. Gemini G3 model that allows 700/800MHz automatic band
switching capability during roaming.
AES
Advanced Encryption Standard - Uses 128-bit encryption to secure data.
Airlink
Physical radio frequency connections used for communication between units and
protocol (see E-DBA)
ARP
Address Resolution Protocol – Maps IP address to physical address.
Backbone
The part of a network that connects most of the systems and networks together,
and handles the most data.
Bandwidth
The transmission capacity of a given device or network.
Base
Designates products used as base stations in VIS systems. They currently include
the Paragon family of products up to the Paragon3.
Browser
An application program that provides a way to look at and interact with all the in-
formation on the World Wide Web.
BSC
Base Station Controller - Links to and controls the radio base station in Paragon3
equipped VIS systems.
Cycle Mark
Signal transmitted on an E-DBA network that keeps the network synchronized.
DEV Ports
RS-232 serial communications ports of the GeminiG3 wireless radiomodem
DHCP
Dynamic Host Configuration Protocol - A networking protocol that allows ad-
ministrators to assign temporary IP addresses to network computers by "leasing"
an IP address to a user for a limited amount of time, instead of assigning perma-
nent IP addresses.
DNS
Domain Name System – The on-line distributed database system used to map
human-readable machine names into IP addresses.
Domain
A specific name for a network of computers.
Dynamic IP Addr
A temporary IP address assigned by a DHCP server.
E-DBA
Enhanced Dynamic Bandwidth Allocation – Dataradio proprietary protocol that
schedules all inbound and outbound Airlink traffic to minimize contention.
Feature Key
Method used to implement customer’s option(s) selected at the time of radio-
modem purchase (factory-installation) or as add-on (field-installation).
Ethernet
IEEE standard network protocol that specifies how data is placed on and re-
trieved from a common transmission medium.
Firewall
A configuration of routers and networks placed between an organization’s inter-
nal Internet and a connection to an external Internet to provide security.
Firmware
The programming code that runs a networking device.
Fragmentation
Breaking of a packet into smaller units when transmitting over a network me-
dium that cannot support the original size of the packet.