Installation guide

3-18
Basic Setup & Internet Access
ISDN Dial Backup Setup
Dial Backup Mode: Select "None" to disable this feature or
select "Packet Trigger" to activate this feature (refer to 3.5.4).
PPP Setup
PPP Authentication: Select "PAP or CHAP" for widest
compatibility.
Idle Timeout: Idle timeout means the router will disconnect
after being idle for a preset amount of time. The default is 180
seconds. If you set the time to 0, the PPP session will not
terminate itself.
Fixed IP: Check "No (Dynamic IP)" unless your ISP has pro-
vided you with a static IP address.
Fixed IP Address: If your ISP has provided you with a static IP
address enter it here.
3.5.3 Using a Static IP with a DSL/Cable Modem
Select this access mode if you receive a fixed public IP address or a
public subnet from your DSL or Cable ISP. In most cases, a Cable ISP
will provide a fixed public IP, while a DSL ISP will provide a public
subnet. You must enable IP Routing Usage, and enter the fixed public
IP or choose one public IP from the public subnet for Ethernet TCP/IP
Setup (refer to 3.1.2).