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C-2 Cisco 2500 Series Access Server User Guide

Console and Auxiliary Port Signals and Pinouts

The console port is conﬁgured as data communications equipment (DCE), and the auxiliary

port is conﬁgured as data terminal equipment (DTE). The console and auxiliary ports both

use RJ-45 connectors. RJ-45-to-DB-25 adapters are available for connection to modems

and other external communications equipment. Both ports are conﬁgured as asynchronous

serial ports.

Following are the pinouts for the console port (see Table C-1), the auxiliary port (see

Table C-2), and the adapter (see Table C-16 and Table C-17).

Table C-1 Console Port Pinouts (RJ-45)

Table C-2 Auxiliary Port Pinouts (RJ-45)

1. Any pin not referenced is not connected.

Console Port (DTE)

Signal Input/Output

1– –

2 DTR Output

3 TxD Output

4 GND –

5 GND –

6 RxD Input

7 DSR Input

8– –

Auxiliary Port (DTE)

Signal Input/Output

1 RTS Output

2 DTR Output

3 TXD Output

1 2 ... 135 136 137 138 139 140 141 142 143 144 145 ... 173 174

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