Cisco Cable
Cisco uses a proprietary cable pinout for their serial console cables.
Note: Pinout or pin-out is a term used in electronics to describe how an electrical cable is wired, or the function of each wire (pin) in a connector.
Given below are the pinout details for a Cisco cable.
9-pin Cisco Cable Cable Pinout
| Signal | DB9F | RJ45 |
|---|---|---|
| Receive Data | 2 | 3 |
| Transmit Data | 3 | 6 |
| Data Terminal Ready | 4 | 7 |
| Ground | 5 | 4 |
| Ground | 5 | 5 |
| Data Set Ready | 6 | 2 |
| Request to Send | 7 | 8 |
| Clear to Send | 8 | 1 |
25-pin Cisco Cable Cable Pinout
| Signal | DB25F | RJ45 |
|---|---|---|
| Shield Ground | 1 | |
| Transmit Data | 2 | 6 |
| Receive Data | 3 | 3 |
| Request to Send | 4 | 8 |
| Clear to Send | 5 | 1 |
| Data Set Ready | 6 | 2 |
| Ground | 7 | 4 |
| Ground | 7 | 5 |
| Data Terminal Ready | 20 | 7 |
This data was contributed by the team at The Hardware Book.
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The pinout given for the Cisco DB9F to RJ45 console cable is INCORRECT. I just rang one out with a DVM and it does not match that provided on this website. Cisco console “blue” cable, Part Number: 72-3383 all revisions.
referring to this site http://www.cisco.com/en/US/products/hw/routers/ps332/products_tech_note09186a0080094ce6.shtml#topic8, the pinout is really different