US Robotics USR8000A, Installation Manual

Page: 12 / 62

Connecting an Analogue or ISDN modem to the Broadband Router
8
Connecting an Analogue or ISDN modem to the Broadband
Router
There are two main reasons why you would want to use either an analogue or ISDN modem with the
Broadband Router:
•
You use Dial-up Internet service instead of Cable or DSL Internet service.
• You have Cable or DSL Internet service but want to have an analogue or ISDN backup in case
your broadband Internet service is unavailable.
The following graphic is a representation of your system topology before the installation of the Broad-
band Router.
Perform the following steps to connect an analogue or ISDN modem, manually change the WAN type,
and properly configure the Broadband Router:
1
Turn off your PC and your analogue or ISDN modem.
Note: If your analogue or ISDN modem is connected to
your PC using a USB cable, disconnect the USB cable
from both your PC and from your analogue or ISDN
modem.
Connect a serial modem cable to your analogue or ISDN
modem and to the COM port on the Broadband Router.
2
Connect one end of an Ethernet cable to your PC’s Ether-
net adapter. Connect the other end to one of the LAN
ports on the Broadband Router.