Contec FX-DS540-APP User manual

LAN-HELPER
WirelessLAN(5GHz)
FLEXLAN-DS540 Series AccessPoint
FX-DS540-AP
FX-DS540-APP
User’s Manual
CONTEC CO.,LTD.

FX-DS540-AP, FX-DS540-APP i
Check Your Package
Thank you for purchasing the CONTEC product.
The items making up the FX-DS540-AP and FX-DS540-APP packages are different.
The product consists of the items listed below.
Check, with the following list, that your package is complete. If you discover damaged or missing items,
contact your retailer.
Product Configuration List <FX-DS540-AP>
- Main unit (FX-DS540-AP), CF card (Used to start up the system. Already plugged)…1
- Antenna (The dipole antennas that attach to the FX-DS540-AP)…2
- Antenna connector cover (Cover for the connector of the antenna)…2
- Spacer (Used when the main unit is installed, for example, on a wall)…4
- Installation diagram (Used when the main unit is installed)…1
- Magnet (for mounting on metallic surfaces)…4
- CF card Clip…1
(Used to prevent CF card falling out when inserted in the FX-DS540-AP.)
- Front seal (for dust ingress protection)…1
(The CF1 slot can be used if it is difficult to use the bundled CF card in the CF2 slot for maintenance
reasons.)
- External-toothed screw (Used for grounding via the ground terminal)…1
- This User’s Manual (this booklet)…1
Installation
diagram User's Manual
User's Manual
Magnet x 4
FX-DS540-AP Spacer x 4 CF card Clip
Antenna x 2
Antenna connector
cover x 2
External-
toothed
screw
Front seal Installation
diagram

ii FX-DS540-AP, FX-DS540-APP
Product Configuration List <FX-DS540-APP>
- Main unit (FX-DS540-APP), CF card (Used to start up the system. Already plugged)…1
- Antenna (The dipole antennas that attach to the FX-DS540-APP)…2
- Antenna connector cover (Cover for the connector of the antenna)…2
- Spacer (Used when the main unit is installed, for example, on a wall)…4
- Installation diagram (Used when the main unit is installed)…1
- Magnet (for mounting on metallic surfaces)…4
- CF card Clip…1
(Used to prevent CF card falling out when inserted in the FX-DS540-APP)
- Front seal (for dust ingress protection)…1
(The CF1 slot can be used if it is difficult to use the bundled CF card in the CF2 slot for maintenance
reasons.)
- External-toothed screw (Used for grounding via the ground terminal)…1
- clump…1
- Cable Tie…1
- AC Adoptor…1
- This User’s Manual (this booklet)…1
External-
toothed
screw
FX-DS540-APP
ACAdoptor
Cable Tie x 2
Clump
User's Manual
Magnet x 4
Spacer x 4
Antenna x 2
Antenna connector
cover x 2
Installation
diagram
Front seal
CF card Clip
User's Manual
Installation
diagram

FX-DS540-AP, FX-DS540-APP iii
Copyright
Copyright 2003 CONTEC CO., LTD. ALL RIGHTS RESERVED
No part of this document may be copied or reproduced in any form by any means without prior written
consent of CONTEC CO., LTD.
CONTEC CO., LTD. makes no commitment to update or keep current the information contained in this
document. The information in this document is subject to change without notice.
All relevant issues have been considered in the preparation of this document. Should you notice an
omission or any questionable item in this document, please feel free to notify CONTEC CO., LTD.
Regardless of the foregoing statement, CONTEC assumes no responsibility for any errors that may
appear in this document nor for results obtained by the user as a result of using this product.
Trademarks
FLEXLAN is a registered trademark of CONTEC CO., LTD.
MS, Microsoft, Windows, Windows NT, and MS-DOS are registered trademarks or trademarks of
Microsoft Corporation in the U.S.A. and other countries.
Netscape Navigator is a registered trademark of Netscape Communications.
Other names of companies and products used in this document trademarks or registered trademarks of
the related companies. This document does not use the symbols ™, ®, © etc.
Terminology/Abbreviations
The following terms and abbreviations are used in this manual for convenience.
Full term Term used in this manual
FX-DS540-AP,
FX-DS540-APP Access point / AP
FX-DS540-AP and
FX-DS540-APP FX-DS540-AP/APP
A device with the wireless
function User unit / Wireless terminal
Personal computer PC
CompactFlash Card CF card
User unit UU

iv FX-DS540-AP, FX-DS540-APP
Table of Contents
Check Your Package............................................................................................................................i
Copyright ...........................................................................................................................................iii
Trademarks ........................................................................................................................................iii
Terminology/Abbreviations........................................................................................................iii
Table of Contents...............................................................................................................................iv
1. BEFORE USING THE PRODUCT 1
About the FX-DS540-AP/APP........................................................................................................... 1
Features........................................................................................................................................1
Outline of the FLEXLAN-DS540 series ............................................................................................ 3
Features of the FLEXLAN-DS540 series....................................................................................3
Introduction to the FLEXLAN DS540 Series .............................................................................5
Customer Support ...............................................................................................................................7
Web Site http://www.contec.co.jp/en/......................................................................................... 7
Limited One-Year Warranty............................................................................................................... 7
How to Obtain Service........................................................................................................................ 7
Liability............................................................................................................................................... 7
Safety Precautions............................................................................................................................... 8
Safety Information....................................................................................................................... 8
Precautions for Use......................................................................................................................8
Precautions Related to Electromagnetic Interference .................................................................8
Precautions Related to Service ....................................................................................................8
Handling Precautions................................................................................................................... 9
Environment............................................................................................................................... 10
Inspection................................................................................................................................... 10
Storage .......................................................................................................................................10
2. FUNCTIONS AND WIRELESS LINK MODE 11
Roaming Function.............................................................................................................................11
IP Tunneling Function (To be supported in the near future) ...........................................................13
MAC Address Filtering ....................................................................................................................14
Bridge Packet Control....................................................................................................................... 15
Wireless Link Mode Descriptions.................................................................................................... 16
Standard Infrastructure Mode....................................................................................................16
Compatible Infrastructure Mode................................................................................................17
Advanced Infrastructure Mode.................................................................................................. 18
Wireless Link Mode and Communications ............................................................................... 19
Comparison of Main Functions ................................................................................................. 20

FX-DS540-AP, FX-DS540-APP v
3. SETUP 23
Component Locations....................................................................................................................... 23
Checking the Network Addresses .................................................................................................... 27
Attaching the Antenna...................................................................................................................... 27
Attaching the FX-DS110-CFC (option) ........................................................................................... 28
Setup ................................................................................................................................................. 29
Table Top Installation................................................................................................................ 29
Wall Installation......................................................................................................................... 30
Attaching Using a Magnet......................................................................................................... 31
Cable Installation.............................................................................................................................. 33
Network Cable Installation........................................................................................................ 33
Power Supply Cable Connection...................................................................................................... 34
Supplying power from a wall outlet(100VAC)......................................................................... 34
Supplying power through the UTP cable .................................................................................. 35
Ground the FX-DS540-AP/APP................................................................................................ 36
Installation in a Network .................................................................................................................. 37
Features of the Wireless Network .............................................................................................37
Operating Environment and Radio Waves................................................................................ 38
Constructing a Network............................................................................................................. 39
4. SETUP PREPARATION 43
Setup Methods .................................................................................................................................. 43
Setup Using a Web Browser............................................................................................................. 44
Connecting to the Web Browser PC.......................................................................................... 45
Connecting to an FX-DS540-AP/APP ...................................................................................... 45
Setup Using a Terminal .................................................................................................................... 46
Setup Using TELNET....................................................................................................................... 47
Connecting the Terminal .................................................................................................................. 48
Connect to Console Program..................................................................................................... 49
Terminal Keyboard Operation................................................................................................... 52
Explanation of Top Menu and IP Settings ................................................................................ 53
5. SOFTWARE SETUP 55
Setting Method.................................................................................................................................. 55
Password Input........................................................................................................................... 55
Selecting the wireless link mode............................................................................................... 55
Setting Method........................................................................................................................... 55
Exiting Setup.............................................................................................................................. 55

vi FX-DS540-AP, FX-DS540-APP
AP Status Display............................................................................................................................. 56
Setup Item List.................................................................................................................................. 57
Settings.............................................................................................................................................. 59
AP Setup .................................................................................................................................... 59
Ethernet......................................................................................................................................59
Wireless LAN(5GHz / 2.4GHz) ................................................................................................60
IEEE802.1X...............................................................................................................................62
Extensions..................................................................................................................................63
SNMP......................................................................................................................................... 64
Terminal............................................................................................................................................ 65
Terminal.....................................................................................................................................65
Log information ......................................................................................................................... 65
6. AP MAINTENANCE 67
Maintenance Tool .............................................................................................................................67
How to Use CF card...................................................................................................................67
Log File Collection...........................................................................................................................68
Using CF card to Get the Log File ............................................................................................68
Using FTP to Get the Log File ..................................................................................................68
Saving the Settings File.................................................................................................................... 69
Using CF card to Backup the Settings File ...............................................................................69
Using FTP to Backup the Settings File .....................................................................................70
Restoring the Software Settings .......................................................................................................71
Using CF card to Restore the Settings....................................................................................... 71
Using FTP to Restore the Settings............................................................................................. 71
Upgrading the Firmware................................................................................................................... 73
Performing an Upgrade Using CF card..................................................................................... 73
Performing an Upgrade Using FTP...........................................................................................73
Performing an Update Using a Web Browser........................................................................... 74
7. TROUBLESHOOTING 75
When Communication Fails ...................................................................................................... 75
When You Cannot Perform Setup Using a Browser.................................................................76
When the AP Will Not Start......................................................................................................76

FX-DS540-AP, FX-DS540-APP vii
8. APPENDIX 77
Factory Default Settings List............................................................................................................ 77
Hardware Setup.......................................................................................................................... 77
Product Specifications...................................................................................................................... 78
Physical Specifications.............................................................................................................. 78
Software Specifications............................................................................................................. 80
Environmental Specifications for Installing the FX-DS540-AP/APP ...................................... 80
LEDs ................................................................................................................................................. 81
FX-DS540-AP/APP................................................................................................................... 81
During Normal Operation.......................................................................................................... 82
Others......................................................................................................................................... 83
Input/Output Interface ...................................................................................................................... 84
Pin Assignment for UTP Port.................................................................................................... 84
COM Port................................................................................................................................... 84
Replacing the Battery ................................................................................................................ 86
Comparison to FLEXLAN DS110 series terminology .................................................................... 86
Glossary ............................................................................................................................................ 87

viii FX-DS540-AP, FX-DS540-APP

1. Before Using the Product
FX-DS540-AP, FX-DS540-APP 1
1. Before Using the Product
This chapter provides information you should know before using the FX-DS540-AP/APP.
About the FX-DS540-AP/APP
The FX-DS540-AP/APP is a wireless LAN PC Card using OFDM (Orthogonal Frequency Division
Multiplexing) in the 5 GHz band. It conforms to the wireless LAN standard specification IEEE 802.11a.
The FX-D540-AP/APP enables high-speed communication at up to 54 Mbps when used in combination
with the FX-DS540-PCC/PCC2, the PC card model in the FX-DS540 series.
The FX-DS540-AP and FX-DS540-APP are functionally equivalent to each other.
The FX-D540 series is an IEEE 802.11a compliant, high-speed wireless LAN series providing a
maximum transmission speed of 54 Mbps and robust security while inheriting the unique features highly
evaluated mainly by business users such as IP tunneling and roaming. It not only meets the needs for
faster transmission speeds of wireless LANs but also provides a new environment of a wireless LAN
network, for example, by letting the 54 Mbps wireless LAN and 11 Mbps wireless LAN coexist
seamlessly.
The FX-D540-AP is powered from a wall outlet (100 VAC). It can also be powered via a network cable
when using the UTP cable power separator unit POW-SP20 and the power supply unit POW-CB20 or
POW-CBM44.
The FX-DS540-APP can be powered via a network cable when using the power supply unit POW-CB20
or POW-CBM4. It can also be powered from a wall outlet (100 VAC) through the AC adapter.
This document explains how to use the FX-DS540- AP/APP. Be sure to read it carefully so that you can
use the product correctly.
The FLEXLAN DS540 series employs a wireless LAN chip manufactured by Atheros Communications Inc. The main
board, firmware, and enhancements are developed by CONTEC based on its abundant experience and technical skills
in LAN.
Features
- High-speed link at 54 Mbps max, providing throughput more than five times higher than that of the 11
Mbps wireless LAN.
- With the 11 Mbps compact flash wireless card FX-Ds110-CFC (separately available) plugged, the
FX-DS540-AP/APP can serve as a dual-band access point that accommodates the CONTEC
FLEXLAN DS100 series and 11 Mbps wireless LAN devices in the 2.4 GHz band as well.
- High-speed RISC chip integrated, providing processing speed four times faster than that of the
CONTEC’s conventional product, getting the full benefit of the high-speed processing capability of
a 54 Mbps wireless LAN, and enabling smooth operation free of stress even in dual-band mode.
- A single unit of FX-DS540-AP/APP accepts log-in from up to 254 stations.
In dual-band mode (with the FX-DS110-CFC plugged), simultaneous log-in is accepted from up to
254 stations in the 5 GHz band and from up to 254 stations in the 2.4 GHz band.
- Provided with a dipole diversity antenna immune to multipath interference, providing a wireless
communication coverage of about 30 m at 54 Mbps or about 100 m at 6 Mbps. (The coverage
depends on the environment.)

1. Before Using the Product
2 FX-DS540-AP, FX-DS540-APP
- Easy configuration and management using a WWW browser. Assorted maintenance methods are
available to different systems and applications, including the terminal, FTP commands, TELNET,
and CF card.
- IP tunneling feature integrated (*1), enabling communication even at a roaming destination beyond
the router without making any changes to network configuration.
- SNMP agent feature integrated (*1), enabling network management using SNMP supported
network management software (such as CONTEC SNMPc). MIBII and private MIB are supported.
- Firmware storage CF card (32 MB) bundled, allowing log and configuration information to be saved
to and restored from and firmware to be updated collectively.
*1 IP tunneling will be supported in the near future.
The latest versions of software including firmware can be downloaded from the CONTEC’s web site
(http://www.contec.co.jp/eu/)

1. Before Using the Product
FX-DS540-AP, FX-DS540-APP 3
Outline of the FLEXLAN-DS540 series
The FLEXLAN DS540 series is a wireless LAN PC Card adopting OFDM in the 5 GHz band, which has
the following features.
Features of the FLEXLAN-DS540 series
IEEE 802.11a compliant, 5 GHz band wireless LAN
The FLEXLAN DS540 series conforms to the new wireless LAN standard specification “IEEE 802.11a”
that applies to the OFDM encoding scheme in the 5 GHz band with less radio interference. The 5 GH
band wireless LAN provides a clearer radio communications environment than the 2.4 GHz band
wireless LAN.
The FLEXLAN DS540 series is classified as “radio equipment for a radio station in a low-power data
communications system” defined in the Wireless Telegraphy Act, requiring no radio transmission
license.
Data transfer rate of 54 Mbps
The product switches its data rate automatically to 54, 48, 36, 24, 18, 12, 9, or 6 Mbps depending on the
radio conditions. It will be provided with a link speed setting feature focusing on speed and stability.
Robust security provided
The FLEXLAN DS540 series supports the 64-, 128, and 152-bit types of WEP(RC4). Using WEP in
combination with WSL (Wireless Security Link with a proprietary cryptography) provides more robust
security. WEP can be used single-handedly, too. The FLEXLAN DS540 series will also support IEEE
802.1x specifying the latest protocol for security.
Capable of using 11 Mbps and 54 Mbps systems at the same time
You can install a 54 Mbps wireless LAN system while maintaining an existing 11 Mbps wireless LAN
only by inserting an 11 Mbps wireless CF card of FX-DS110-CFC (separately available) at an access
point. A flexible system can be implemented, for example, by constructing an 11 Mbps wireless LAN in
the open air where the use of the 5 GHz band is restricted by the Wireless Telegraphy Act and a 54 Mbps
wireless LAN indoors.
Capable of interconnection with a Wi-Fi compliant wireless LAN device
The FLEXLAN DS540 series can communicate, using basic features, with a Wi-Fi compliant device such as a
non-FLEXLAN wireless LAN card, wireless LAN integrated notebook PC. With this feature, you can get the
most out of wireless LAN resources.
Note! This feature does not guarantee the connection of the FX-DS540-PCC to all of Wi-Fi compliant devices.
Enhancements such as IP tunneling can be used with a product other than the FLEXLAN series.
Multi-channel support
Four channels (channels 34, 38, 42, and 46) can be used. Using different channels for wireless networks
adjacent to each other prevents radio interference and improves the throughput of either network.
IP tunneling function *1
Even when a wireless terminal with a fixed IP address assigned moves to (roam) a segment different in
IP beyond the router, you can continue communication without making changes to settings.

1. Before Using the Product
4 FX-DS540-AP, FX-DS540-APP
Station feature (*1)
Two wired LANs can be interconnected between an access point and a station.
*1 IP tunneling will be supported in the near future.
The latest versions of software including firmware can be downloaded from the CONTEC’s web site
(http://www.contec.co.jp/eu/)

1. Before Using the Product
FX-DS540-AP, FX-DS540-APP 5
Introduction to the FLEXLAN DS540 Series
User unit (FX-DS540-PCC/PCC2)
The user unit corresponds to the LAN card for a wired LAN; it is plugged into a PC for use. The FX-
DS540-PCC/PCC2 is available as a PC Card (CardBus) type.
FX-DS540-PCC/
FX-DS540-PCC2
Figure 1.1 User unit
Access point (FX-DS540-AP/APP)
The access point is used to manage the wireless network, relay messages, and serve as the bridge to a
wired LAN.
FX-DS540-AP FX-DS540-APP
Figure 1.2 Access point

1. Before Using the Product
6 FX-DS540-AP, FX-DS540-APP
Option card for connecting the FLEXLAN DS110 series(FX-DS110-CFC)
The FX-DS110-CFC is a wireless LAN CF card using direct-sequence spread spectrum (DSSS) in the
2.4 GHz band. It conforms to the wireless LAN standard specification IEEE 802.11b.
You can construct a wireless LAN environment with the FLEXLAN DS110 series by plugging the FX-
DS110-CFC in the FLEXLAN DS110 (2.4 GHz band wireless LAN) series into the CF2 slot on the
FX-DS540-AP/APP.
FX-DS110-CFC
Figure 1.3 FX-DS110-CFC
CompactFlash Card (Bundled)
This medium is used to store the firmware for the access point and its configuration information.
Figure 1.4 CompactFlash Card

1. Before Using the Product
FX-DS540-AP, FX-DS540-APP 7
Customer Support
CONTEC provides the following support services for you to use CONTEC products more efficientlyand
comfortably.
Web Site
Japanese http://www.contec.co.jp/
English http://www.contec.com/
Chinese http://www.contec.com.cn/
Latest product information
CONTEC provides up-to-date information on products.
CONTEC also provides product manuals and various technical documents in the PDF.
Free download
You can download updated driver software and differential files as well as sample programs available in
several languages.
Note! For product information
Contact your retailer if you have any technical question about a CONTEC product or need its price,
delivery time, or estimate information.
Limited One-Year Warranty
CONTEC Interface boards are warranted by CONTEC CO., LTD. to be free from defects in material and
workmanship for up to one years from the date of purchase by the original purchaser.
Repair will be free of charge only when this device is returned freight prepaid with a copy of the original
invoice and a Return Merchandise Authorization to the distributor or the CONTEC group office, from
which it was purchased.
This warranty is not applicable for scratches or normal wear, but only for the electronic circuitry and
original boards. The warranty is not applicable if the device has been tampered with or damaged through
abuse, mistreatment, neglect, or unreasonable use, or if the original invoice is not included, in which case
repairs will be considered beyond the warranty policy.
How to Obtain Service
For replacement or repair, return the device freight prepaid, with a copy of the original invoice. Please
obtain a Return Merchandise Authorization Number (RMA) from the CONTEC group office where you
purchased before returning any product.
* No product will be accepted by CONTEC group without the RMA number.
Liability
The obligation of the warrantor is solely to repair or replace the product. In no event will the warrantor
be liable for any incidental or consequential damages due to such defect or consequences that arise from
inexperienced usage, misuse, or malfunction of this device.

1. Before Using the Product
8 FX-DS540-AP, FX-DS540-APP
Safety Precautions
Understand the following definitions and precautions to use the product safely.
Safety Information
This documentprovides safety information using the following symbols to prevent accidents resulting in
injury or death and the destruction of equipment and resources. Understand the meanings of these labels
to operate the equipment safely.
DANGER DANGER indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING WARNING indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION CAUTION indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury or in property damage.
Precautions for Use
This product is classified as "wireless equipment for stations of low-power data transmissions systems"
under the Wireless Telegraphy Act, and does not require a radio transmission license. The law prohibits
modification of the interior of this product.
Precautions Related to Electromagnetic Interference
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions : (1) this device may not cause harmful interference,
and (2) this device must accept any interference received, including
interference that may cause undesired operation.
This equipment complies with part 15 of the FCC rules. Any changes or modifications not
expressly approved by the manufacturer could void the user’s authority to operate the equipment.
CAUTION: To comply with FCC RF exposure compliance requirements, a separation
distance of at least 5 cm must be maintained between this device and all persons.
Precautions Related to Service
Clean the FX-DS540-AP/APP by wiping lightly with a soft cloth moistened with water or a cleaning
solution.
Take care to avoid the use of benzene, thinners or other volatile solutions which may cause deformation
or discoloration.

1. Before Using the Product
FX-DS540-AP, FX-DS540-APP 9
Handling Precautions
DANGER
Do not use the product where it is exposed to flammable or corrosive gas. Doing so may result in an
explosion, fire, electric shock, or failure.
CAUTION
- This product contains precision electronic elements and must not be used in locations subject to
physical shock or strong vibration.
Otherwise, the board may malfunction, overheat, or cause a failure.
- Do not use or store this device in high temperature or low temperature surroundings, or do not
expose it to extreme temperature changes.
Otherwise, the board may malfunction, overheat, or cause a failure.
- Do not use or store this device where it is exposed to direct sunlight or near stoves or other sources
of heat. Otherwise, the board may malfunction, overheat, or cause a failure.
- Do not use or store this device near strong magnetic fields or devices emitting electromagnetic
radiation. Otherwise, the board may malfunction, overheat, or cause a failure.
- If an unusual smell or overheat is noticed, unplug the power cable immediately.
- Be careful not to let the external supply voltage or drive current exceed the rating.
- Do no place an object that blocks ventilation slits on top of this product or on its sides.
- The specifications of this product are subject to change without notice for enhancement and quality
improvement.
Even when using the product continuously, be sure to read the manual and understand the contents.
- Do not attempt to modify this device. The manufacturer will bear no responsibility whatsoever for
the device if it has been modified.
- Regardless of the foregoing statements, CONTEC is not liable for any damages whatsoever
(including damages for loss of business profits) arising out of the use or inability to use this
CONTEC product or the information contained herein.

1. Before Using the Product
10 FX-DS540-AP, FX-DS540-APP
Environment
Use this product in the following environment. If used in an unauthorized environment, the board may
overheat, malfunction, or cause a failure.
Operating temperature
0 - 50ºC
Humidity
10 - 90%RH (No condensation)
Corrosive gases
None
Floating dust particles
Not to be excessive
Inspection
Inspect the product periodically as follows to use it safely.
Front Back
- Check that the connector
of the unit and its cable have
been plugged correctly.
- The ventilation slits are not covered,
and neither dust nor alien substance is
attached to the ventilation slits
- Check that the CF slot has
no dust or foreign matter
adhering.
FX-DS540-AP
Storage
When storing this product, keep it in its original packing form.
(1) Wrap it in the packing material, then put it in the box.
(2) Store the package at room temperature at a place free from direct sunlight, moisture, shock,
vibration, magnetism, and static electricity.

2 Functions and Wireless Link Mode
FX-DS540-AP, FX-DS540-APP 11
2. Functions and Wireless Link Mode
This chapter describes the major functions of the FLEXLAN DS540 series as a wireless LAN system and
the wireless link modes of the FX-D540-AP/APP along with configuration examples of networks
available in the wireless link modes.
Roaming Function
The roaming function maintains the connection to the LAN by automatically changing the access point
to which the user unit is connected when the unit moves. If access points are positioned so as to cover
the entire area where the wireless LAN is to be available, the user unit can be used from anywhere.
When the wireless link mode of a FLEXLAN-DS540 user unit is “Standard Infrastructure” or “Compatible
Infrastructure”, it is designed to continuously monitor the AP (access point) signal strength and change to
the AP that provides the most reliable communications.
In the following example, the signals from the APs do not cover the entire range in which the mobile
station U1 moves and therefore the connection to the wired LAN is lost when U1 is in position (2).
AP : Unit type AP(FX-DS540-AP/APP)
UU : User unit(FX-DS540-PCC/PCC2)
AP1
OK
UU1
(1)
UU1
UU1
OK
AP3
NG
(2)
(3)
10/100M
WTX/WRX
MGMT
POW
ER WLINK
ON
OFF LINK/ACT
FDX/COL
CF2
10/ 10 0 M
WTX/WRX
MGMT
POW
ER
WLINK
ON
OFF LINK/ACT
FDX/COL
CF2
Figure 2.1 Roaming Function 1