VT2542 Voice Gateway User Guide

13

Overview

Installation

Troubleshooting

Contact

FAQ

Glossary

License

Configuration:

Basic

Advanced

TCP/IP

Wireless

Restoring Defaults for the VT2542

1

Click

TOOLS

.

2

Click

Restore Defaults

on the menu at left:

3

Click the

Restore Defaults

button.

If the VT2542

Power

light is red after you restart the VT2542, refer to

“Troubleshooting”

on page 64.

Logging Out

1

On the main menu, click

Log Out

. The text

Are you sure you want to Log Out?

is displayed.

2

Click

Log Out

. The VT2542 login screen appears.

VT2542 Voice Gateway User Guide

14

Overview

Installation

Troubleshooting

Contact

FAQ

Glossary

License

Configuration:

Basic

Advanced

TCP/IP

Wireless

WAN Configuration

1

Log in to the VT2542 (see

“Logging In to the VT2542”

on page 11).

2

Click

SETUP

.

3

Click

WAN Configuration

.

4

From the

Type

drop-down list, choose

one

of:

PPPoE

PPPoE is used with all DSL modems

See

“WAN Setup for PPPoE (DSL)”

on

page 15

Static

For some cable modems, the cable company assigns the

cable modem a static (unchanging) IP address. You must

provide the IP address, subnet mask, default gateway,

and one to three domain name server (DNS) addresses.

See

“WAN Setup for a Static IP Address

(Cable Modem)”

on page 16

DHCP

Most cable modems have a dynamic IP address assigned

by the cable company DHCP server. Typically no

additional configuration is needed for the VT2542.

See

“PPTP Settings”

on page 17

VT2542 Voice Gateway User Guide

15

Overview

Installation

Troubleshooting

Contact

FAQ

Glossary

License

Configuration:

Basic

Advanced

TCP/IP

Wireless

WAN Setup for PPPoE (DSL)

PPPoE Connection Setup fields and buttons

Field or Button

Description

Options

We recommend leaving the following selected:

•

NAT — Enables

Network Address Translation

•

Firewall — Enables the VT2542 firewall

User name

Your PPPoE user name provided by your DSL provider.

Password

Your PPPoE password provided by your DSL provider.

Authentication

Sets the authentication:

•

Auto — Automatic

•

CHAP — Challenge Handshake Authentication Protocol

•

PAP — Password Authentication Protocol

Microsoft CHAP v2 is supported in the Auto and CHAP options. MS CHAP v1 is not supported.

MTU

The maximum transmission unit for the DSL connection. It is a negotiated value that represents

the maximum size in bytes of the packets sent over the connection. The default is 1492. The

maximum is 1500. The minimum is 64.

Override MAC

If your cable or DSL provider associates a particular service to a specific device, such as your

computer, select this field and type that MAC address in the

MAC

field to use as a “virtual”

WAN

MAC address

instead of the VT2542 MAC address. By default, the MAC address printed on the

VT2542 is displayed in this field.

Restore

Restores the actual VT2542 MAC address.

Enforce MTU

If enabled (the default), all

TCP

segments must have a size within the PPPoE MTU.

If you disable

this, you may have problems accessing some Internet sites.

Debug

Enables PPPoE debugging for use by technical support personnel

only

.

Connect

Establishes the DSL connection.

Disconnect

VT2542 Voice Gateway User Guide

16

Overview

Installation

Troubleshooting

Contact

FAQ

Glossary

License

Configuration:

Basic

Advanced

TCP/IP

Wireless

WAN Setup for a Static IP Address (Cable Modem)

Type the following in

dotted-decimal format

as assigned by your cable provider:

Optional fields and buttons are:

Options

We recommend leaving the following selected:

•

NAT — Enables

Network Address Translation

•

Firewall — Enables the VT2542 firewall

IP Address

The static IP address

Mask

The

subnet mask

Gateway

The gateway IP address

Default Gateway

The default gateway IP address

DNS 1, 2, and 3

One to three

domain name server

IP addresses

Override MAC

If your cable or DSL provider associates a particular service to a specific device, such as your

computer, select this field and type that MAC address in the

MAC

field to use as a “virtual”

WAN MAC address

instead of the VT2542 MAC address. By default, the MAC address printed

on the VT2542 is displayed in this field.

Restore

Restores the actual VT2542 MAC address.

VT2542 Voice Gateway User Guide

17

Overview

Installation

Troubleshooting

Contact

FAQ

Glossary

License

Configuration:

Basic

Advanced

TCP/IP

Wireless

PPTP Settings

If you are connecting to a virtual private network (

VPN

), consult with your network administrator regarding the

appropriate Point-to-Point Tunneling Protocol (PPTP) settings for your VPN. The PPTP settings are:

Enable

Enables PPTP on your VT2542

Username

Provided by your ISP

Password

Provided by your ISP

Server IP

Sets the IP address of the server for the VPN, in

dotted-decimal format

MPPC

Enables Microsoft Point-To-Point Compression (

MPPC

)

MPPE

Enables Microsoft Point-to-Point Encryption (

MPPE

)

Strength

Works with the MPPE feature when the field is checked and enabled

Three encryption strengths are supported by the client:

•

40-bit

•

56-bit

•

128-bit (highest)

Stateless

Authentication

You can choose:

•

Auto

— System automatically verify information

•

CHAP

— Challenge Handshake Authentication Protocol

•

PAP

— Password Authentication Protocol

•

MSCHAP

— Microsoft Challenge Handshake Authentication Protocol

•

MSCHAP-v2

— Microsoft Challenge Handshake Authentication Protocol version 2

Debug

Enable or disable the PPTP client application in order to display debug information