Technical data

Connectors and Pin Assignments

893-00992-D

C-5

DB-9 (RS-232-D) Console/Service Port Connector

The DB-9 console/service port connector (Figure C-4) is configured as a data

communications equipment (DCE) connector. The DSR and CTS signal outputs

are always asserted; the CD, DTR, RTS, and RI signal inputs are not used. This

configuration enables a management station (a PC or console terminal) to connect

directly to the switch using a straight-through cable.

Figure C-4. DB-9 console/service port connector

Table C-2 lists the DB-9 console/service port connector pin assignments.

Table C-2. DB-9 console/service port connector pin assignments

Pin Signal Description

1 CD Carrier detect (not used)

2 TXD Transmit data (output)

3 RXD Receive data (input)

4 DTR Data terminal ready (not used)

5 GND Signal ground

6 DSR Data set ready (output always asserted)

7 RTS Request to send (not used)

8 CTS Clear to send (output always asserted)

9 RI Ring indicator (not used)

Shell Chassis ground

619EA