Nortel 1800, Installing

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20 Metro Ethernet Services Unit 1800
317808-D
You can connect the Fast Ethernet ports to remote network devices at either 10
Mb/s or 100 Mb/s. The ports can automatically detect the highest communication
speed and the duplex state (full- or half-duplex) that the remote network device
can accept and then configure themselves to provide the highest speed connection
possible.
In addition, the 24 Fast Ethernet ports can detect whether a cross-over or
straight-through Ethernet cable is used, and automatically connect the receive and
transmit twisted pair wires to the appropriate receive and transmit terminals. This
means that a Fast Ethernet network connection to a remote network device can use
either a cross-over or a straight-through Ethernet cable and still maintain a valid
link.
Figure 1 shows the front panel of the Metro ESU 1800-24T-LX-DC. Figure 2
shows the front panel of the Metro ESU 1800-24T. Figure 3 on page 21 shows the
front panel of the Metro ESU1800-24T-DC.
Figure 1 Metro Ethernet Services Unit 1800-24T-LX-DC front panel
l
Figure 2 Metro Ethernet Services Unit 1800-24T front panel
l
11058EA
Metro Ethernet Services Unit 1800-24T-LX-DC
Console
25
Power
Status
6 8 2 4 14 16 10 12
5 7 1 3 13 15 9 11 21 23 17 19
22 24 18 20
Link
Act
LED Status
100
10
1000BASE-LX
Link
Act
26
1000BASE-LX
Link
Act
11058EA
Metro Ethernet Services Unit 1800-24T
Console
25
Power
Status
6 8 2 4 14 16 10 12
5 7 1 3 13 15 9 11 21 23 17 19
22 24 18 20
Link
Act
LED Status
100
10
Link
Act
26
Link
Act