Adtran L768 Manual Do Utilizador
Chapter 1: Understanding HDSL and the Express L768/L1.5
61202192L1-1
Express L768/L1.5 User Manual
11
Rear Panel
The Express L768/L1.5 has one RJ-45 jack, labeled HDSL, on the rear panel for
network connection (see Figure 1-6). There are two sets of switches on the back
panel. The TO HUB/TO NIC switch allows the Express L768/L1.5 to connect
directly to a Network Interface Card (NIC) or a HUB without the need for spe-
cial cabling. The OFF/ON switch block is for factory default and firmware
downloading. With switch 1 in the up or OFF position, the Express L768/L1.5
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 normally. Switch 2 in
the up or OFF position will force the entire configuration to be factory default-
ed.
network connection (see Figure 1-6). There are two sets of switches on the back
panel. The TO HUB/TO NIC switch allows the Express L768/L1.5 to connect
directly to a Network Interface Card (NIC) or a HUB without the need for spe-
cial cabling. The OFF/ON switch block is for factory default and firmware
downloading. With switch 1 in the up or OFF position, the Express L768/L1.5
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 normally. Switch 2 in
the up or OFF position will force the entire configuration to be factory default-
ed.
The Express L768 transfers data up to 768 kbps over a two-wire facility. The
Express L1.5 transfers data up to 1.536 Mbps over a four-wire facility. This
type of service is a permanent connection between endpoints or between the
unit and the Frame Relay cloud. It is sometimes referred to as a leased connec-
tion, 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.
Express L1.5 transfers data up to 1.536 Mbps over a four-wire facility. This
type of service is a permanent connection between endpoints or between the
unit and the Frame Relay cloud. It is sometimes referred to as a leased connec-
tion, 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.
Figure 1-6
Express L768/L1.5 Rear Panel
Configuration
The Express L768/L1.5 is configured using a menu-based interface. This in-
terface can be accessed via the maintenance port using any asynchronous
VT 100 terminal or personal computer running a terminal emulation program,
or via the LAN using a Telnet client program. To use the Telnet interface, the
Express L768/L1.5 must first have an IP address programmed into it via the
maintenance port. The factory default is 10.0.0.1.
terface can be accessed via the maintenance port using any asynchronous
VT 100 terminal or personal computer running a terminal emulation program,
or via the LAN using a Telnet client program. To use the Telnet interface, the
Express L768/L1.5 must first have an IP address programmed into it via the
maintenance port. The factory default is 10.0.0.1.
1
O
HDSL
OFF
ON
EIA232
10 BASE T
POWER
1
2
3
4
TO
HUB
TO
NIC
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