HP Compaq NC4400 Instructions d'installation et d'entretien

Wireless (Select Models Only)

Document Part Number: 384463-002

October 2005

Wireless (Select Models Only) ii

Contents

1 Integrated wireless devices

2 Wireless controls

Wireless button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

Wireless Assistant software (select models only) . . . 2–3

Operating system controls . . . . . . . . . . . . . . . . . . . . . 2–4

3 Bluetooth devices (select models only)

4 WLAN devices (select models only)

Identifying a WLAN device . . . . . . . . . . . . . . . . . . . 4–2

Setting up a WLAN in your home. . . . . . . . . . . . . . . 4–3

Connecting to a WLAN in your home. . . . . . . . . . . . 4–4

Connecting to a public or corporate WLAN . . . . . . . 4–5

Using wireless security features . . . . . . . . . . . . . . . . 4–5

5 WWAN devices (select models only)

Wireless (Select Models Only) 1–1

Integrated wireless devices

Wireless technology makes a computer mobile by transmitting

data across radio waves instead of wires. Your computer may be

equipped with one or more of the following integrated wireless

devices:

■Bluetooth® device—Creates a personal area network (PAN)

to connect to other Bluetooth-enabled devices such as

computers, phones, printers, headsets, speakers, and cameras.

In a PAN, each device communicates directly with other

devices, and devices must be relatively close

together—typically within 33 feet of each other.

■Wireless local area network (WLAN) device—Connects

the computer to wireless local area networks (commonly

referred to as wireless networks, wireless LANs, or WLANs)

in corporate offices, your home, and public places such as

airports, restaurants, coffee shops, hotels, and universities.

In a WLAN, each mobile wireless device communicates

with a wireless access point, which can be several hundred

feet away.

1–2 Wireless (Select Models Only)

Integrated wireless devices

■Wireless wide area network (WWAN) device—Provides

access to information anytime and anywhere you have

cellular (data) coverage. In a WWAN, each mobile device

communicates to a public carrier’s base station. Public

carriers install networks of base stations (similar to cell

phone towers) throughout large geographic areas, effectively

providing coverage across entire states, regions or even

countries.

✎Your computer may look different from the illustrations in this

guide. The location and number of buttons, lights, and jacks

vary by model.

For more information on wireless technology, visit

http://www.hp.com/go/techcenter/wireless.

Wireless (Select Models Only) 2–1

Wireless controls

You can control the wireless devices in your computer using one

of three methods:

■Wireless button

■Wireless Assistant software (select models only)

■Operating system controls

2–2 Wireless (Select Models Only)

Wireless controls

Wireless button

Your computer has a wireless button 1that will enable or disable

all integrated wireless devices simultaneously. In addition, a

wireless light 2indicates the computer’s overall wireless state

(enabled or disabled). The wireless light does not reflect the

status of individual devices (unless the computer has only one

wireless device). When the wireless light is on, one or more of the

wireless devices are on.

✎By default, all of the integrated wireless devices and the

wireless light are turned on when you turn on the computer.

✎The location of the wireless button and light varies by model.

On some computers, the wireless button and light are together;

and on other models, they are separate.

Wireless controls

Wireless (Select Models Only) 2–3

You can enable and disable the wireless devices with the wireless

button or through the Setup Utility.

✎You cannot use the wireless button to control the wireless

devices if they have been disabled in the Setup Utility. For

more information, refer to the Wireless Assistant online Help.

✎Enabling a wireless device does not automatically connect the

computer to a network or to a Bluetooth-enabled device.

Wireless Assistant software

(select models only)

Wireless Assistant reports details about the status of the

integrated wireless devices in your computer, including WLAN

devices, WWAN devices, and Bluetooth devices. Wireless

Assistant displays the status of the devices as on, off, or disabled.

Wireless Assistant also provides information about devices that

are disabled and turned off to help you understand where and how

to enable them or turn them on.

2–4 Wireless (Select Models Only)

Wireless controls

When a wireless device is enabled, it can be turned on or off

using the Wireless Assistant software. Once a wireless device is

disabled, however, it must be enabled before it can be turned on

or off using Wireless Assistant.

To view the state of the wireless devices, place the pointer

over the Wireless Assistant icon ( ) in the notification area

(at the far right of the taskbar) or open Wireless Assistant by

double-clicking the icon in the notification area.

For more information about Wireless Assistant:

1. Open Wireless Assistant by double-clicking the icon in the

notification area.

2. Click the Help button.

✎You cannot use Wireless Assistant to control the wireless

devices if they have been disabled in the Setup Utility. For

more information, refer to the Wireless Assistant online Help.

Operating system controls

Some operating systems and client managers also offer a way to

manage integrated wireless devices and the wireless connection.

For more information, refer to the documentation for your

operating system or client manager.

Wireless (Select Models Only) 3–1

Bluetooth devices

(select models only)

A Bluetooth device provides short-range wireless

communications that replace the physical cable connections that

traditionally link electronic devices such as

■Network access points.

■Computers (desktop, notebook, PDA).

■Phones (cellular, cordless, smart phone).

■Imaging devices (printer, camera).

■Audio devices (headset, speakers).

Bluetooth devices provide peer-to-peer capability that allows you

to set up a personal area network (PAN) of Bluetooth devices.

The devices are represented in the Bluetooth for Windows

software by graphical icons that resemble the physical features of

the devices. These recognizable icons make it easy to distinguish

Bluetooth devices from other classes of devices.

For information on configuring and using Bluetooth devices, refer

to the Bluetooth for Windows Getting Started guide that came

with your computer.

Wireless (Select Models Only) 4–1

WLAN devices

(select models only)

With a WLAN device, you can access a wireless local area

network, which is composed of other computers and accessories

linked by a wireless router or a wireless access point.

✎The terms wireless access point and wireless router are often

used interchangeably.

■A large-scale WLAN, such as a corporate or public WLAN,

typically uses wireless access points that can accommodate a

large number of computers and accessories and can separate

critical network functions.

■A home or small office WLAN typically uses a wireless

router, which allows several wireless and wired computers to

share an Internet connection, a printer, and files without

requiring additional pieces of hardware or software.

✎To use the WLAN device in your computer, you must connect

to a WLAN infrastructure (provided through a service provider

or a public or corporate network).

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