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The drivers are fundamentally different in the way they relate to operating system of the computer. The
computer/Modem relationship can be summarized as follows:
LAN driver – To your computer, the Modem appears as an Ethernet device. Connection is automatic,
similar to a connection to an Ethernet device. If your ADSL service provider assigns you a static IP
address, you can configure the LAN driver to use this address (along with a subnet mask, gateway IP
address, and DNS server address). No additional software is required, but you must have the appropriate
addresses for your connection supplied by your ADSL service provider.
PPPoE driver – To your computer, the Modem appears as a conventional dial-up modem device –
employing the same Microsoft Dial-Up Networking software. There is no actual dialing or any activity in
the voice band frequencies on the telephone line, but you must still provide a user name and password to
log-on. This driver uses the Point-to-Point over Ethernet (PPPoE) protocol.
PPPoA driver – To your computer, the Modem appears as a conventional dial-up modem device –
employing the same Microsoft Dial-Up Networking software. There is no actual dialing or any activity
in the voice band frequencies on the telephone line, but you still need to provide a username and
password to log-on. This driver uses the Point-to-Point over ATM (PPPoA) protocol.
Encapsulation Method
It may be necessary to use an encapsulation method that is different from the default method. The protocol used
for your connection, and thus the driver you use will determine which encapsulation method is used. If your
DSL service provider does not specify, use the default encapsulation method.
Modulation Technique
It may be necessary to use a modulation method that is different from the default method. If your DSL service
provider does not specify, use the default modulation method called Multimode.
DSL-260I ADSL USB Modem User's Guide
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