User guide

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
Ends the DSL connection. If you disconnect your DSL connection, your VoIP service cannot work.