Crossover 10Base-T/100Base-Tx Cables For Stp; Null-Modem Cable - IBM 8237 Installation And User Manual

Crossover 10BASE-T/100BASE-TX Cables for STP

Figure A-6. Crossover STP Cable (RJ-45 to IBM Data Connector)

Null-Modem Cable

A null-modem cable should be used for a direct connection from a PC serial port to
the 8237 Management Port.
Figure A-7. Null-Modem Cable Connection
Hub's 9-Pin
Management Port
1 DCD
2 RXD
3 TXD
4 DTR
5 SGND
6 DSR
7 RTS
8 CTS
9 RI
PC's 9-Pin
COM Port
1 DCD
2 RXD
3 TXD
4 DTR
5 SGND
6 DSR
7 RTS
8 CTS
9 RI
Appendix A. Cable Pinout Diagrams
A-3