TwinMOS G245 User manual

TwinMOS
802.11g Series
G245
Wireless LAN Adapter
User’s Manual
TwinMOS®

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Contents
PACKAGE CONTENTS………………………........................................................2
INTRODUCTION.................……………………......................................................3
WIRELESS NETWORK OVERVIEW..………………….........................................4
G245 WIRELESS NETWORK SCENARIOS…………….………………………6
INSTALLATION FOR WINDOWS (XP/2000/98SE)…………….........................…..9
CONFIGURATION UTILITY …………………………….........................…..32
WIRELESS BRIDGE MODE………………….…….…………………..52
TROUBLESHOOTING.......…………....................................……………........…..53
TECHNICAL SPECIFICATIONS.…………...........…………............................…..54
FCC CAUTION……………………………………………………………….........…..56

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PACKAGE CONTENTS
Unpack your G245 WLAN adapter kit and verify that all items are present.
 G245 Wireless LAN Adapter
 User’s Manual (on CD)
 Driver (on CD)
 USB Cable
If any of the items described appear to be damaged or missing, please contact your reseller.

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INTRODUCTION
The G245 WLAN adapter is a wireless network client that complies with the IEEE 802.11g standard on
wireless LANs. The IEEE 802.11g standards compliance means this adapter gives you the flexibility to
connect it to any 802.11g network. The IEEE 802.11g Ethernet standard allows you to connect
computers and devices at speeds up to 11Mbps, dependent upon the distance between wireless adapters,
the configuration of your working environment, or the capabilities or limitations of your computer
systems.
This G245 WLAN Adapter supports following WLAN features：
 Automatic transmit data rate select mechanism in the transmit range of 1, 2,
5.5,6,9,11,12,18,24,36,48 and 54 Mbps.
 Center frequency channel selection (2.4 GHz)
 Roaming over multiple channels.
 Supports USB interface
 Supports power save mode
 128-bit Wired Equivalent Privacy (WEP) data encryption.
 Plug and Play installation
This G245 comes with software drivers for the most popular Microsoft Windows operating systems and
can be integrated into a larger network, running Windows XP, Windows 2000, Windows ME, or
Windows 98 in either Ad-Hoc mode or infrastructure mode. This manual provides a quick introduction
to wireless technology and its application as it relates to networking. Take a moment to read through this
manual and familiarize you with wireless technology. You should also give yourself some time to
become familiar with your new wireless network.

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WIRELESS NETWORK OVERVIEW
A wireless local area network (LAN) is a flexible data communications system implemented as an
extension to, or as an alternative for, a wired LAN. Using radio frequency (RF) technology, wireless
LANs transmit and receive data over the air, minimizing the need for wired connections. Thus, wireless
LANs combine data connectivity with user mobility.
A local area network that transmit and receive over the air typically in an unlicensed frequency such as
the 2.4GHz band. A wireless LAN does not require lining up devices for line of sight transmission like
IrDA. Wireless access points (base stations) are connected to an Ethernet hub or server and transmit a
radio frequency over an area of several hundred to a thousand feet which can penetrate walls and other
nonmetal barriers. Roaming users can be handed off from one access point to another like a cellular
phone system. Laptops use wireless modems that plug into an existing Ethernet port or that are self
contained on PC cards, while stand-alone desktops and servers use plug-in cards (ISA, PCI, etc.).
Wireless LANs offer the following productivity, convenience, and cost advantages over traditional wired
networks：
Mobility - WLAN provide LAN users to access data in any location within the operating range of the
WLAN. Ad-hoc management decisions based on real-time information can significantly improve worker
efficiency.
Installation Speed and Simplicity - Installing a wireless LAN system can be fast and easy and can
eliminate the need to pull cable through walls and ceilings.
Installation Flexibility - Wireless technology allows the network to go where wire cannot go.
Reduced Cost-of-Ownership - While the initial investment required for wireless LAN hardware can
be higher than the cost of wired LAN hardware, overall installation expenses and life-cycle costs can be
significantly lower. Long-term cost benefits are greatest in dynamic environments requiring frequent
moves and changes.
Scalability - Wireless LAN systems can be configured in a variety of topologies to meet the needs of
specific applications and installations. Configurations are easily changed and range from peer-to-peer
networks suitable for a small number of users to full infrastructure networks of thousands of users that
enable roaming over a broad area.
Installation Considerations
Designed to go up to 300 feet (100 meters) indoors and up to 900 feet (273 meters) outdoors, G245
WLAN adapter lets you access your network from virtually anywhere you want. Keep in mind, however,
that the number and thickness of walls, ceilings or other objects that the wireless signals must pass thru
may limit range. Typical ranges vary depending on the types of materials and background RF noise in
your home or business. The key to maximizing range is to follow these basic principles:

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Keep the number of walls and ceilings between the access point and your receiving device to a minimum
- Each wall or ceiling can reduce your TwinMOS G245 Wireless product’s range from 3-90 feet (1-30
meters.) For some businesses or for a large residential home deployment, it may be more beneficial to
have more than one access point with overlapping coverage.
1. Be aware of the direct line between Access Points, Residential Gateways, and Computers - A wall
that is 1.5 feet thick (.5 meters), at a 45-degree angle appears to be almost 3 feet (1 meter) thick. At
a 2-degree angle it looks over 42 feet (14 meters) thick! Try to make sure that the Access Points and
Adapters are positioned so that the signal will travel straight through a wall or ceiling for better
reception.
2. Building Materials make a difference - A solid metal door or aluminum studs may have a negative
effect on range. Try to position Access Points, Residential Gateways, and Computers so that the
signal passes through drywall or open doorways and not other materials.
3. Make sure that the antenna is positioned for best reception by using the software signal strength
tools included with your product.
4. Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices that generate RF
noise, like microwaves, monitors, electric motors, etc.
For the average residence, range should not be a problem. If you experience low or no signal strength in
areas of your home that you wish to access, consider positioning the Access Point in a location directly
between the Residential Gateways and/or Computers that will be connected. Additional Access Points
can be connected to provide better coverage in rooms where the signal does not appear as strong as
desired.
Using radio frequency (RF) technology, WLANs transmit and receive data over the air, minimizing the
need for wired connections. Thus, WLANs combine data connectivity with user mobility, and, through
simplified configuration, enable movable LANs.

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G245 WIRELESS NETWORK SCENARIOS
The G245 WLAN adapter enables you to:
 Connect your computer to an Ad-Hoc workgroup of wireless computing devices (see Figure 1-1 on
page 6).
 Connect your computer to a Small Office/Home Office (SOHO) network that includes a Residential
Gateway (RG) access point (see Figure 1-2 on page 7).
 Connect your computer to a Local Area Network (LAN) Infrastructure that includes Access Points, or
other IEEE 802.11 compliant LAN systems (see Figure 1-3 and Figure 1-4).
 Expand the capabilities of your Access Points, to support wireless devices that have been equipped
with G245.
Ad-Hoc Workgroup
The Ad-Hoc workgroup configuration enables you to quickly set up a small wireless workgroup, where
the workgroup participants can exchange files using features like “Files and Printer Sharing” as
supported by Microsoft Networking.
Figure 1-1 Ad-Hoc Wireless Workgroup
You can use this option to setup a temporary or ad-hoc network in environments where no access points
are available (for example in Small Office/Home Office (SOHO) environments). As long as the stations
are within range of one another, this is the easiest and least expensive way to set up a wireless network.

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Home Networking
With the TwinMOS G245 WLAN adapter, wireless access to the Internet or other computers is at your
fingertips. All you need to do is connect the wireless computers to an external cable, an xDSL or a ISDN
modem and you are ready to：
 Share files and printers, and
 Access the Internet
Figure 1-2 Connect to a Residential Gateway (RG)
Enterprise Networking
With the 11 Mbps Wireless LAN access point you can connect to a corporate Local Area Network (LAN)
infrastructure to have wireless access to all network facilities. LAN Infrastructures may either be:
 Stand-alone wireless LANs (Figure 1-3).
 Wireless network infrastructures connected to an existing Ethernet network (Figure 1-4).
Figure 1-3 Stand Alone Wireless LAN
xDSL

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Figure 1-4 LAN Infrastructure
It’s Easy
The G245 functions like any standard wired Ethernet card, but G245 does not need any wires!
Where an Ethernet card requires a cable connection to a hub and/or patch panel, the cable physically ties
you down to the location of the wired connection.
G245 allows you to connect your computer to a Local Area Network (LAN) system from anywhere
within the wireless coverage area. Expanding or re-designing your network is easy: Add or relocate
access point, power-up your (new) wireless computers, and you’re done!
Unlike Ethernet, TwinMOS G245 will enable you to roam throughout the network while remaining
connected to the LAN.
Note ： The G245 wireless adapter is a radio product. Refer to the flyer ”Information to the User” for
regulatory information that may apply in your country.

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INSTALLATION FOR WINDOWS (XP/2000/98SE)
The following section will assist you to install G245 WLAN adapter successfully. You will install driver
firstly and then plug in the G245 WLAN adapter, and finally set the network properties to accommodate
resource sharing and select the type of wireless network that you want to install.
In order to establish your wireless network connection, make sure some steps below will be performed.
■Install the Access Point (AP) at first if you useAccess Point network mode.
■Install the driver using the Installation CD.
■Plug in the G245 wireless LAN adapter.
■Install the network protocol(s) required to communicate on your network. Most likely you will
need the TCP/IP protocol.
The Octopus Wireless LAN Configuration Utility is installed simultaneously with the driver by
executing the Setup.exe file. Note also that some versions of Microsoft Windows operating systems
require administrator to install software. If this is the case for your operating system, be sure that you
have such privileges before executing the Setup.exe file. To upgrade an existing driver, it is not
necessary to remove your Octopus driver from your computer. Simply run the Setup.exe file to replace
the existing driver with the latest version. After the new driver is installed, maybe you must restart the
operating system (depend on the Windows’ OS).
Please follow the following steps one by one in order to install the G245 WLAN adapter successfully.
Before you proceed with the installation, please notice following descriptions.
Note1: After running the driver package, the Notebook (or PC) with Win98 OS shall be restarted, for
Win2000 or WinXP OS the Notebook (or PC) doesn’t need to be restarted.
Note2: Please do not insert USB Stick adapter into USB port of your computer until Application setup
has been completed.

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For Windows XP
Install the Driver and Utility
1. Insert the CD into the CD-ROM device and execute the "G245_4618A.exe" program of your
purchace G245 to select. The InstallShield Wizard box will appear, click "Next" to continue.
2. Choose install folder

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 Don’t care below to click "Continue Anyway" button to next setp
3. Insert the G245 WLAN adapter into the USB port of your computer, the system will automatically
find the device and search for its software.

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 Please wait while the wizard installs the software.
 Don’t care below to click "Continue Anyway" button to next setp

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 Please wait while the wizard installs the software.
 Completing the "G245 Series USB Adapter" installing the software.

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Using the Utility of G245 adapter
Note: If you don’t disable the XP’s Utility, you can not use function of the adapter’s
utility.
1.The way disable the XP’s Utility, please do the following:
 Clicking on the utility icon.
 Click “Yes”.
 The “TwinMOS WLAN Configuration” screen will appear.

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2.The another way disable the XP’s Utility, please do the following:
 Get into Windows XP’s utility, click "Advanced" button.

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 In “Wireless Network Connection Properties“ screen, uncheck the setting “Use Windows to
configure my wireless network settings“. Note that if you want to change back to the Windows
XP built-in utility, check the item again.
 Please click “Start->All programs->G245 IEEE 802.11g Wireless LAN - USB ->TMWLan
Utiliy” or to Double-click on the icon shown below.

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 The “TwinMOS Wireless LAN Configuration Tool Plus” screen will appear. Double click the
icon and start using the WLAN USB Stick Adapter.
 The “TwinMOS Wireless LAN Configuration Tool Plus” screen show below.

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Using the Windows XP’s Utility
To connect to your wireless network, please do the following:
◎Double-click the icon marked in red in the taskbar and you may start using the Windows XP’s
wireless utility
 To click "Properties" to next step.

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◎ The “Connect to Wireless Network” window will contain a list of all the available Wireless
Networks. Select the proper network for your needs. In this example, “Corega” network was selected
as shown.