Nortel 1800, Installing

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Cabling requirements for the Metro ESU 1800 31
Installing the Metro Ethernet Services Unit 1800
10/100BASE-T ports
Table 1 shows the pin assignments for a 10/100BASE-T port.
Console serial port
The Console serial port is implemented as a DB-9 connector. Default settings for
this port are 9600 bits/s, 8 data bits, no parity, and one stop bit.
Connection to TXD and RXD signals and GND is sufficient for the console serial
port to fully function. The Console port does not support any inbound flow
control; that is, the port does not toggle control lines to indicate an input buffer
full condition.
Table 1 Pin assignments: 10/100BASE-T port
Connector Pin number Signal
1 Input receive data + (RX+)
2 Input receive data - (RX-)
3 Output transmit data + (TX+)
6 Output transmit data - (TX-)
4, 5, 7, 8 Not used
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