RS-232 DB9 WAN Port Pinouts with Direct Connect Wiring
Signal | DB9 | Connection Direct | DB9 | DB25 |
| DTE | connect | DTE | DTE |
| male |
| male | male |
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DCD | 1 | 1 | 8 | |
RxD | 2 | 3 | 3 | |
TxD | 3 | 2 | 2 | |
DTR | 4 | 6 | 6 | |
GND | 5 | 5 | 7 | |
DSR | 6 | 4 | 20 | |
RTS | 7 | 8 | 5 | |
CTS | 8 | 7 | 4 | |
RI | 9 | 9 |
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10BaseT RJ-45 Port Pinouts
PIN Description
1Tx+
2Tx-
3RX+
6RX-