Symbol Technologies MC9000-K User Manual

Page 510

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MC9000-K/S for Embedded Windows® CE .NET Product Reference Guide

GL-8

ESS_ID

Extended Service Set Identifier, defines the coverage area.
Prior to the release of the 802.11 specification the ESS_ID
was called the Net_ID or Network Identifier. For terminals
using Spectrum24 radios with the 802.11 protocol, an
ESS_ID allows facilities to limit which Access Points a
mobile computer can communicate with. It is set on the
Network tab of the Control Panel. The terminal can only
communicate with Spectrum24 Access Points that have
matching ESS_IDs.

Ethernet

Ethernet communication port. Allows a wired interface to a
radio network.

Flash Disk

An additional megabyte of non-volatile memory for storing
application and configuration files.

Flash Memory

Flash memory is nonvolatile, semi-permanent storage that
can be electronically erased in the circuit and
reprogrammed. Series 9000 mobile computers use Flash
memory to store the operating system (ROM-DOS), the
terminal emulators, and the Citrix ICA Client for DOS.

File Transfer Protocol (FTP)

A TCP/IP application protocol governing file transfer via
network or telephone lines. See TCP/IP.

Frequency Hopping

The use of a random sequence of frequency channels to
achieve spread spectrum compliance. Stations that use
frequency hopping change their communications frequency
at regular intervals. A hopping sequence determines the
pattern at which frequencies are changed. Messages take
place within a hop. See Hopping Sequence and Spread
Spectrum
.

FTP

See File Transfer Protocol.

Flash Memory

Flash memory is responsible for storing the system
firmware and is non-volatile. If the system power is
interrupted the data is not lost.

Gateway Address

An IP address for a network gateway or router. A mobile
computer may be part of a subnet as specified by its IP
address and Netmask. It can send packets directly to any
node on the same subnet. If the destination node is on a
different subnet, then the terminal sends the packet to the
gateway first. The gateway determines how to route the
packet to the destination subnet. This field is an option
used by networks that require gateways.

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