VT2542 Voice Gateway User Guide

58

Overview

Installation

Troubleshooting

Contact

FAQ

Glossary

License

Configuration:

Basic

Advanced

TCP/IP

Wireless

9

Click

Properties

to display the Internet Protocol (TCP/IP) Properties window:

10

Be sure

Obtain IP address automatically

and

Obtain DNS server address automatically

are selected.

11

Click

OK

to close the TCP/IP Properties window.

12

Click

OK

to close the Local Area Connection Properties window.

When you complete the TCP/IP configuration, go to

“Verifying the IP Address in Windows 2000 or Windows XP”

on page 58.

Verifying the IP Address in Windows 2000 or Windows XP

To check the IP address:

1

On the Windows Desktop, click

Start

.

2

Select

Run

. The Run window is displayed.

3

Type

cmd

and click

OK

to display a command prompt window.

4

Type

ipconfig

and press

ENTER

to display the IP configuration. A display similar to the following indicates a

normal configuration:

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Configuration:

Basic

Advanced

TCP/IP

Wireless

If an Autoconfiguration IP Address is displayed as in the following window, there is an incorrect connection

between the PC, the VT2542, and the Internet:

5

After verifying your connections, type

ipconfig /renew

and press

ENTER

to renew the IP address. If a valid IP

address is displayed as shown, Internet access should be available.

6

Type

exit

and press

ENTER

to return to Windows.

If after performing this procedure the computer cannot access the Internet, call your cable or DSL provider

for help.

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Configuration:

Basic

Advanced

TCP/IP

Wireless

Setting Up Your Wireless LAN (WLAN)

1

Click the

Wireless

tab to access the features (Setup, Advanced, Security, Access List, WDS, Restart

Wireless).

2

Click the

Enable Wireless

box.

3

Enter the

Primary SSID

information.

4

Select the

Channel B/G

(1 through 11) from the pull down menu.

5

Select the

802.11 Mode

(Mixed, B only B+, G only, G+)

Set the transmission protocol for your WLAN:

Mixed

—

802.11b/g

B only

—

802.11b only

B+

—

802.11b+

G only

—

802.11g

6

Click

Save

. You must use the

Restart Wireless

feature in order for your changes to take affect.

Caution!

To prevent unauthorized eavesdropping or access to WLAN data, you must enable wireless security. The

default

VT2542

settings provide no wireless security. After your WLAN is operational, be sure to enable

wireless security.

Connect at least one computer to the

VT2542

Ethernet port to perform configuration.

Do not attempt to configure the

VT2542

over a wireless connection.

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Configuration:

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TCP/IP

Wireless

Establishing Security for Your Wireless LAN

To prevent unauthorized viewing of data transmitted over your WLAN, you must encrypt your wireless

transmissions.

If all of your wireless clients support WPA encryption, we recommend using WPA instead of WEP. The benefits of

using WPA:

•

Provides a much stronger encryption and is more secure

•

Provides authentication to ensure that

only

authorized users can log on to your WLAN

•

It is much easier to configure

•

It uses a standard algorithm on all compliant products to generate a key from a textual passphrase

Configuring WPA on the VT2542

1

Select the WPA option on the Wireless Security page.

2

Select the encryption type (WPA, WPA2, WPA/WPA2).

3

Enter the

Group Key Interval

.

4

Select the

Radius Server

if the authentication type is remote; if it is local, select

Pre-Shared Key

.

5

Enter the

IP Address, Port, Secret

(code), and

PSK String

.

6

Click

Save

.

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Configuration:

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Advanced

TCP/IP

Wireless

Configuring WEP on the VT2542

Use Wired Equivalent Privacy (

WEP

) if you have wireless clients that do not support WPA.

1

Check the

Enable WEP Wireless Security

box to enable the setting.

2

Select the

Authentication Type

(Open, Shared, Both) from the pull down menu.

3

Click the

SECURITY

tab to display the page.

4

Check the key field (0

—

3).

5

Enter the encryption key.

6

Select the cipher (64, 128, 256) size from the pull down menu.

7

Click

Save.

You must restart the wireless system in order for the changes to take affect.

Caution!

If you use WEP encryption, you must configure the same WEP key on the

VT2542 access point

and all

wireless clients (stations).

Never provide your WEP key or passphrase to anyone who is not authorized

to use your WLAN.

WEP

Authentication

Sets whether shared key authentication is enabled to provide data privacy on the WLAN:

•

Open System — Any WLAN

client

can transmit data to any other client without

authentication. It is the default, if the Security Mode is set to WEP.

•

Shared Key — The

VT2542

authenticates and transfers data to and from all clients having

shared key authentication enabled.

We recommend this setting.

Encryption

Use a WEP key length that is compatible with your wireless client adapters. Choose

one

of:

•

Enable 64-Bit — Use only if you have wireless clients that do not support 128-bit encryption

•

Enable 128-Bit — We recommend this setting for stronger encryption; it is supported by the

Motorola WN825G and WPCI810G wireless adapters and most current wireless adapters

Key Type

(Key 0 to Key 3)

Select the active key (0 to 3). Only

one

key can be active.

•

Four 10-character long key 64-bit WEP keys

•

Four 26-character long 128-bit WEP keys

We recommend changing the WEP keys frequently. Never provide the WEP key to anyone

who is not authorized to use your WLAN.