3Com AP7760 User manual

Copyright © 2006 3Com Corporation. All rights reserved. 3Com and the 3Com logo are registered
trademarks of 3Com Corporation. All other company and product names may be trademarks of the
respective companies with which they are associated.
Part Number 10015002 Rev. AA
Published April 2006
Quick Start Guide
3Com Wireless 7760
11a/b/g PoE Access Point
3CRWE776075 / WL-561
Guide de mise en route…13
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Guida introduttiva…23
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Kurzanleitung…33
Deutsch
Guía de inicio rápido…43
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Quick Start Guide
3Com Wireless 7760
11a/b/g PoE Access Point
3CRWE776075 / WL-561
The 3Com Wireless 7760 11a/b/g PoE Access Point combines high-performance, interoperability,
and ease of-use to join isolated wired networks into a cohesive wireless local area network
(WLAN). The Wireless 7760 Access Point also includes robust standards-based security features,
and supports wireless network standards including 802.11a and 802.11g.
This Quick Start Guide describes the basic steps necessary to install and configure your 3Com
Wireless 7760 11a/b/g PoE Access Point (3CRWE776075 / WL-561). Throughout this guide the
Wireless 7760 Access Point is simply referred to as the Access Point.
Before installing or moving the Access Point you must read the safety information provided in
“Safety Information” on page 3 of this manual.
About This Guide
This guide describes the basic installation of the Access Point. It covers the following topics:
•3Com Wireless 7760 Access Point Features
•Safety Information
•Step 1: Unpacking the Access Point
•Step 2: Preparing for Installation
•Step 3: Attaching the Antennas
•Step 4: Mounting the Access Point
•Step 5: Connecting Power
•Step 6: Checking the LED Indicators
•Step 7: Installing Software
•Step 8: Connecting to the Access Point
•Step 9: Configuring the Access Point
•Troubleshooting

2
3Com Wireless 7760 Access Point Features
Feature Description
Ethernet Port The Ethernet port provides a 10/100BASE-TX Ethernet connection to a
3Com switch. Use a suitable Category 5 cable with straight-through
signaling and standard RJ-45 connectors to connect your Access Point
to the switch on the network.
Power Port Not supported. The Access Point is powered using Power Over
Ethernet (PoE). See “Connecting Power” on page 7.
LEDs The LEDs indicate power and activity. See “Checking the LED
Indicators” on page 9 for details.
Antenna Connectors Two RSMA type antenna connectors allow you to connect antennas
that operate in 2.4 GHz and 5.3 GHz bands.
Reset Button To restore factory settings, press the reset button during power-up by
inserting a pointed object into the reset hole on the back of the
Access Point and holding for five seconds.
Serial Port Provides a serial interface to the Access Point for diagnostic use.
Mounting Bracket The mounting bracket comes attached to the Access Point and allows
the unit to be mounted on a wall or ceiling.
Power Port
Ethernet Port
Mounting Bracket
Antenna Connectors
LEDs
Serial Port
Reset Button

3
Safety Information
This equipment must be installed in compliance with local and national building codes, regulatory
restrictions, and FCC rules. For the safety of people and equipment, only professional network
personnel should install the Access Point.
You must read the following safety information carefully before you install or remove the
unit.
Approved Channels
Use of this product is only authorized for the channels approved by each country. For proper
installation, select your country from the country selection list.
To conform to FCC channel usage restrictions, only channels 1–11 are available by default. If
channels 1–13 are permitted for use in your country, please visit the 3Com web site for the latest
software version.
www.3Com.com
WARNING: Warnings contain directions that you must follow for your personal safety.
Follow all directions carefully.
WARNING: Exceptional care must be taken during installation and removal of the unit.
WARNING: The socket outlet must be near to the unit and easily accessible. You can
only remove power from the unit by disconnecting the power cord from the outlet.
WARNING: This unit operates under SELV (Safety Extra Low Voltage) conditions
according to IEC 950 / IEC 60950. The conditions are only maintained if the equipment
to which it is connected also operates under SELV conditions.
WARNING: There are no user-replaceable fuses or user-serviceable parts inside the
unit. If you have a physical problem with the unit that cannot be solved with problem
solving actions in this guide, contact your supplier.
WARNING: Disconnect the power adapter before moving the unit.
WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They cannot be used
as standard traditional telephone sockets, or to connect the unit to a traditional PBX or
public telephone network. Only connect RJ-45 data connectors, network telephony
systems, or network telephones to these sockets.
Either shielded or unshielded data cables with shielded or unshielded jacks can be
connected to these data sockets.
WARNING: To comply with FCC radio frequency (RF) exposure limits, a minimum
body-to-antenna distance of 20 cm (8 in.) must be maintained when the Access Point is
operational.

4
Informacje na temat bezpieczeñstwa
Urządzenie musi byćzamontowane zgodnie z lokalnymi i krajowymi normami, ustawami
i przepisami. W celu zagwarantowania bezpieczeństwa osób i urządzeń, instalacjęPunktu
dostępowęgo może przeprowadzaćwyłącznie wyszkolony fachowiec ds. sieci.
Przed przystąpieniem do montażu lub demontażu urządzenia należy dokładnie przeczytać
następujące informacje dotyczące bezpieczeństwa.
OSTRZEŻENIE: Ostrzeżenia zawierająwskazówki, których należy przestrzegać
w celu zagwarantowania bezpieczeństwa osobistego. Do tych zaleceńnależy
stosowaćsiędokładnie.
OSTRZEŻENIE: Podczas montażu lub demontażu urządzenia należy pracować
z wyjątkowąuwagą.
OSTRZEŻENIE: Gniazdo sieciowe powinno znajdowaćsięw pobliżu urządzenia
i byćłatwo dostępne. Z urządzenia można odciąć zasilanie wyłącznie poprzez
wyjęcie kabla zasilającego z gniazda.
OSTRZEŻENIE: Urządzenie działa w warunkach SELV (obwód bezpiecznego
niskiego napięcia) zgodnie z normąIEC 950 / IEC 60950. Warunki te sąjednak
zagwarantowane wyłącznie wtedy, gdy sprzęt, do którego podłączone jest
urządzenie, równieżpracuje w obwodzie SELV.
OSTRZEŻENIE: Wewnątrz urządzenia nie znajdująsięwymienne bezpieczniki lub
części, które mogłyby byćoddane do naprawy. W przypadku wystąpienia problemu,
którego nie można rozwiązaćza pomocąwskazówek podanych w tej instrukcji
obsługi, prosimy o kontakt z dostawcąproduktu.
OSTRZEŻENIE: Przed przeniesieniem urządzenia należy odłączyćzasilacz.
OSTRZEŻENIE: Porty RJ-45. Sąto ekranowane gniazda RJ-45 do danych. Nie są
przeznaczone do użycia jako standardowe gniazda telefoniczne lub do podłączenia
urządzenia do PBX lub publicznej sieci telefonicznej. Do tych gniazd wolno
podłączaćwyłącznie wtyki RJ-45 danych, systemów telefonii sieciowej lub telefonów
sieciowych.
Do tych gniazd można podłączaćkable danych ekranowane lub nieekranowane
z ekranowanymi lub nieekranowanymi wtykami.
OSTRZEŻENIE: W związku w ograniczeniami częstotliwości radiowej (RF),
minimalna odległość między ciałem a antenąwynosząca 20 cm (8 cali) musi być
zachowana w przypadku stosowania Punkt dostępowy.

5
1. Unpacking the Access Point
Make sure that you have the following items, which are included with the Access Point:
•One 3Com Wireless 7760 11a/b/g PoE Access Point
•Two external dual-band antennas (2.4 GHz and 5.3 GHz)
•One PoE (Power over Ethernet) injector
•One Ethernet cable
•Wall-mounting hardware:
•Mounting bracket (attached to the Access Point)
•One locking bar (used for securing a wall- or ceiling-mounted installation)
•Two sheet metal screws
•Two thread screws
•Two wall anchors
•Four adhesive rubber feet (used for a flat-surface installation).
•One CD-ROM containing the Setup Wizard software, the User’s Manual, and a copy of this
Quick Start Guide.
•One Warranty Flyer
2. Preparing for Installation
It is advisable to connect and check the Ethernet cable and LEDs before installing the Access Point
in a hard-to-reach location. Additionally, observe the following items before mounting or
connecting the Access Point:
Feature Description
Switch Port To connect your wireless network to your wired network, you need a
hub or switch connected to the Access Point.
Cabling Make sure that standard Ethernet cable with straight-through
signaling is installed at the site before you install the Access Point.
Make sure that the cable is highly flexible and that there is no extra
covering on the RJ-45 connector that could prevent the cable from
being routed through the mounting bracket.
Power Requirement Power is supplied using an 802.3af Power Over Ethernet (PoE)
compliant device. A PoE injector is included.
MAC Address Record the access point MAC address in a safe place before the
Access Point is installed in a hard-to-reach location.
The MAC address is printed on the back of the Access Point.
Additional MAC address labels are shipped with the Access Point.

6
3. Attaching the Antennas
Carefully unpack the standard detachable antennas that came with your Access Point. Thread
each antenna on to an antenna connector on the Access Point and hand-tighten them. After
network startup, you may need to adjust the antennas to fine-tune coverage in your area.
For best results, adjust the antennas so they are perpendicular to the floor and ceiling.
4. Mounting the Access Point
The access point can be mounted on the following types of surfaces:
•Wall, ceiling, or electrical box (NEMA enclosure)
•Tabletop
Wall, Ceiling, or Electrical Box Mounting
Use the mounting bracket that comes with your Access Point to install it on a wall, ceiling, or
electrical box. For additional security, use the included locking bar and a lock (not provided) to
lock the Access Point to the cradle after it is mounted to a wall.
To wall-mount the Access Point:
1Route Ethernet cable through the large opening in the cradle.
2Screw the mounting bracket to a wall, ceiling, or electrical box (NEMA enclosure):
•If mounting to a solid surface wall or ceiling, use the two sheet metal screws.
•If mounting to drywall, use the two sheet metal screws and two wall anchors.
•If mounting to an electrical box (NEMA enclosure), use the two threaded screws.
The figures below show a cable being routed through the large opening in the cradle and
then the cradle being mounted to a wall.
CAUTION: Do not handle the antenna tips, especially after they are connected to the
Access Point. This could lead to electrostatic discharge (ESD), which could damage the
equipment.
Wall-mounting the cradleRouting a cable

7
3Connect the Ethernet cable (for power and network connection) to the port on the front of
the Access Point.
4Snap the Access Point onto the mounting bracket.
5To install the locking bar, push the locking bar through the opening in the side of the
mounting bracket until the hole on the locking bar is exposed. Insert a lock (not provided)
through the hole on the locking bar, and then close the lock to secure it in place.
Tabletop Mounting
To install the Access Point on a flat surface such as a table or desktop:
1Remove the backing from the four rubber feet and attach them on the bottom of the
mounting bracket that is attached to the Access Point.
2Place the Access Point on the table.
3Connect the Ethernet cable (for power and network connection) to the port on the front of
the Access Point.
5. Connecting Power
The Access Point can be powered by the following methods:
•By Power Over Ethernet (PoE) supplied over the LAN by a 802.3af PoE compliant device such
as a switch or hub.
•By PoE supplied by the PoE injector included with the Access Point.
Power Over Ethernet (PoE) from the LAN
To power the Access Point using PoE provided by a switch or other 802.3af compliant device,
simply plug the network cable from the device into the Access Point’s Ethernet port.
Inserting the locking bar Securing the bar with a lock
PoE Switch/Hub
Access Point

8
Power Over Ethernet from a PoE Injector
To power the Access Point using the 3Com PoE Injector (included with the unit), do the following:
1Connect the LAN cable from the switch or hub to the Hub/Switch port on the 3Com PoE
Injector (included with Access Point).
2Next connect a LAN cable from the Ethernet port on the Access Point to the other port on
the PoE injector.
3Plug the PoE Injector into a properly grounded electric outlet.
Switch/Hub
(non-PoE)
Access Point
To Access Point
To Switch/Hub