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Page 71 / 87 Scroll up to view Page 66 - 70
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:
Page 72 / 87
VT2542 Voice Gateway User Guide
59
Overview
Installation
Troubleshooting
Contact
FAQ
Glossary
License
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.
Page 73 / 87
VT2542 Series Voice Gateway User Guide
60
Overview
Installation
Troubleshooting
Contact
FAQ
Glossary
License
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.
Page 74 / 87
VT2542 Series Voice Gateway User Guide
61
Overview
Installation
Troubleshooting
Contact
FAQ
Glossary
License
Configuration:
Basic
Advanced
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
.
Page 75 / 87
VT2542 Series Voice Gateway User Guide
62
Overview
Installation
Troubleshooting
Contact
FAQ
Glossary
License
Configuration:
Basic
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.

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