Efficient Networks® 5800 Series
User Reference Guide
Chapter 3: Additional Features
Efficient Networks®Page 3-15
Dial Backup provides a backup connection to the Internet through an external
V.90 modem, connected to the console port of your router. This backup
connection can be activated in the event of a DSL service interruption. During a
DSL interruption, your router w ill use th e dialup modem connection while
waiting for DSL service to be restored. Once the DSL link is active again, Dial
Backup will automatically switch back to the DSL service. Voice service is
disabled during dial backup.
A special console connector is required to configure Dial Backup. This
connector can be ordered through your Internet Service Provider, or from the
Efficient Networks web site at the following URL: http://www.efficient.com/
To access the Dial Backup screen, select the Dial Backup link from the Router
Information screen. The Dial Backup screen will appear. To enable Dial
Backup, follow these steps:
1. Enter your user name and password as provided from your ISP.
2. Enter at least one telephone number for dialup access to your ISP.
3. Click the OK button to continue with Dial Backup Configuration.
4. The next screen provides settings for Dial Backup Configuration:
–Failover after connection is lost: This setting specifies the time
interval between losing the DSL connection and switching to
the dialup modem connect ion.
–Resume DSL after connection is lost: The time interval
between checks for service restoration is called the retry
period. After each retry period, your router will test the DSL
connection for service. If service is restored, the router will
switch data traffic to the DSL connection. The serial port will
revert to its default function as the console port.
–Serial Port Data Rate: This field specifies the maximum rate at
which data can flow through the serial port . This setting
should equal the maximum baud rate of the attached modem.
–Modem Initialization String: This field sets the initialization
string used by the V.90 modem attached to the console port of
the router.
–Modem Dial String: Sets the dial string for one of two possible
dialing options; pulse or tone dialing. The default is tone
dialing.
5. You will need to reboot your router to enable chan ges to Dial
Backup.