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90APPENDIX B:
Modem Cable |
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| 3Com Switch | |||
| Cable connector: | Cable connector: | ||
| Screen | Shell | 1 | Screen |
| TxD | 3 | 2 | TxD |
| RxD | 2 | 3 | RxD |
| RTS | 7 | 4 | RT S |
| CTS | 8 | 5 | CTS |
| DSR | 6 | 6 | DSR |
| Ground | 5 | 7 | Ground |
| DCD | 1 | 8 | DCD |
| DTR | 4 | 20 | DTR |
Ethernet Port RJ-45 Pin Assignments
10/100 and 1000BASE-T RJ-45 connections.
Table 10 Pin assignments
Pin Number | 10/100 | 1000 |
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Ports configured as MDI |
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1 | Transmit Data + | Bidirectional Data A+ |
2 | Transmit Data – | Bidirectional Data A- |
3 | Receive Data + | Bidirectional Data B+ |
4 | Not assigned | Bidirectional Data C+ |
5 | Not assigned | Bidirectional Data C- |
6 | Receive Data – | Bidirectional Data B- |
7 | Not assigned | Bidirectional Data D+ |
8 | Not assigned | Bidirectional Data D- |
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Table 11 Pin assignments |
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Pin Number | 10/100 | 1000 |
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Ports configured as MDIX |
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1 | Receive Data + | Bidirectional Data B+ |
2 | Receive Data - | Bidirectional Data B- |