
Appendix B Cable and Connector Specifications
Console Port Cabling Specifications and Pinouts
DB-25  Adapter (for Connecting to a Terminal)
Use the 
| Table  | Console Port  | 
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 | Terminal | Console | 
| Console Port | Adapter | Device | ||
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| Signal | Signal | |||
| 
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| RTS | 11 | 8 | 5 | CTS | 
| DTR | 2 | 7 | 6 | DSR | 
| 
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| TxD | 3 | 6 | 3 | RxD | 
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| GND | 4 | 5 | 7 | GND | 
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| GND | 5 | 4 | 7 | GND | 
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| RxD | 6 | 3 | 2 | TxD | 
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| DSR | 7 | 2 | 20 | DTR | 
| 
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| CTS | 81 | 1 | 4 | RTS | 
1. Pin 1 is connected internally to Pin 8.
Modem Adapter
Use the 
| Table  | Console Port Modem Adapter Pinouts | 
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| Console Port | Rollover Cable | Modem Adapter | Modem | |
| 
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| Signal | 
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 | Signal | |
| 
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| RTS | 11 | 8 | 4 | RTS | 
| DTR | 2 | 7 | 20 | DTR | 
| 
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| TxD | 3 | 6 | 3 | TxD | 
| 
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| GND | 4 | 5 | 7 | GND | 
| 
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| GND | 5 | 4 | 7 | GND | 
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| RxD | 6 | 3 | 2 | RxD | 
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| DSR | 7 | 2 | 8 | DCD | 
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| CTS | 81 | 1 | 5 | CTS | 
1. Pin 1 is connected internally to Pin 8.
Cisco 7600 Series Router Supervisor Engine and Route Switch Processor Guide
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