Black Box® IT Pro™ User Manual
59
Chapter 6
DoubleVision
What is DoubleVision?
DoubleVision is a Nitix feature that allows you to configure two or more Internet connec-
tions. For example, you can combine a cable modem and an ADSL link, two ADSL links,
multiple dial-up modems (to the same or different ISP), or any combination of Internet con-
nections supported by Nitix.
There is no single place to configure DoubleVision. Instead, it is automatically configured
when more than one Internet connection is used at the same time.
Please Note:
In order for
DoubleVision
to activate, you must have at least two gateway connections. You
can choose a default connection.
Advantages to DoubleVision
• Increased performance
Internet traffic is increased by being able to utilize the bandwidth of both lines.
Please Note:
You cannot specify which connection is used. It is automatically chosen by
NetIntelli-
gence
.
• Increased reliability
If one ISP’s Internet connections fails, the remaining ISP’s connection stays functional. This
means that your downtime is limited (it’s also known as fail-over, or redundant connectivity).
•
Last Resort
dial-up mode
If one or more of your high-speed Internet connections fail, Nitix can dial your modem auto-
matically and use dial-up access instead. When your high-speed links are restored, the
modem automatically disconnects after it verifies that the high-speed connections are stable
and active. The same applies to high-speed connections if you choose to use them as a last
resort connection.
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