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Appendix A Technical specifications 71
Nortel VPN Router Installation — VPN Router 1750
Figure 17 10/100BASE-TX Ethernet connector
The following table provides the 10/100BASE-TX Ethernet port pinouts.
Serial port
The system board provides a serial port on the rear of the chassis to enable
out-of-band management. Use the serial port to assign the management IP address
and subnet mask to the newly installed gateway. For more information, see
Chapter 4, “Management IP interface configuration,” on page 61.
The serial cable is a DB9/DB25-to-DB9/DB25 cable. This cable provides a
crossover connection (transmit-to-receive and receive-to-transmit). The DB9
connector connects to the gateway, and the other DB9 or DB25 connector
connects to the workstation. “Modem cable (9-pin D-sub plug to RS-232-C
modem plug)” on page 72 shows the serial cable ends.
Table 18 10/100BASE-TX Ethernet port pinouts
Pin Description
1TD +
2TD -
3 RD +
6 RD -
CS260010A
87654321
RD- RD+ TD- TD+