Billion Electric Company 7404V 用户手册

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      VoIP/(802.11g) ADSL2+ (VPN) Firewall Router 
 
Chapter 4: Configuration 
 
 
 
RFC 1483 Routed Connections 
 
Description: User-definable name for the connection. 
VPI and VCI: Enter the information provided by your ISP.   
ATM Class:
 
The Quality of Service for ATM layer. 
NAT: The NAT (Network Address Translation) feature allows multiple users to access the Internet through 
a single IP account, sharing the single IP address. If users on your LAN have public IP addresses and 
can access the Internet directly, the NAT function can be disabled. 
Encapsulation method: Selects the encapsulation format, the default is LLC Bridged. Select the one 
provided by your ISP. 
IP Assignment 
  Obtain an IP address automatically via DHCP client: specify if the Router can get an IP 
address from the ISP (Internet Service Provider) automatically.   
    Use the following IP Address: Specify the IP address manually; the IP should be given by you
 our 
ISP. 
 
RIP: RIP v1, RIP v2, and RIP v2 Multicast. Check to enable RIP function. 
MTU: Maximum Transmission Unit. The size of the largest datagram (excluding media-specific headers) 
that IP will attempt to send through the interface. 
TCP MSS Clamp: This option helps to discover the optimal MTU size automatically. Default is enabled. 
MAC Address Spoofing: This option is required by some service providers. You must fill in the MAC 
address that specify by service provider when it is required. Default is disabled.
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