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Chapter 1. Understanding SDSL and the Express L768
The OFF/ON switch block is for factory default and firmware down-
loading. With switch 1 in the up or OFF position, the Express L768 will
immediately go into a download mode when power is enabled.
Switch 1 must be in the down or ON position in order to boot up nor-
mally. Switch 2 in the up or OFF position will force the entire config-
uration to be factory defaulted.
The Express L768 transfers data up to 768 kbps over a two-wire facil-
ity. This type of service is a permanent connection between endpoints
or between the unit and the Frame Relay cloud. It is sometimes re-
ferred to as a leased connection, a dedicated connection, a "nailed-up"
connection, or a private circuit. Leased connection or leased line is
used in this manual to represent these types of services.
3
Figure 1-6. Express L768 Rear Panel
Configuration
The Express L768 is configured using a menu-based interface. This
interface can be accessed via the maintenance port using any asyn-
chronous VT 100 terminal or personal computer running a terminal
emulation program, or via IP using a Telnet client program or web
browser. To use the Telnet interface or web browser, the Express L768
must first have an IP address programmed into it via the maintenance
port. The factory default is 10.0.0.1.
Security
Security on network devices is a major concern for almost anyone with
a network. The Express L768 provides many tools for securing the lo-
cal network from hostile users. Connections can be authenticated us-
ing passwords. A RADIUS client can also be used.
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Express L768 User Manual
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