Nortel Networks 10BASE-T manual DB-9 RS-232-D Console/Comm Port Connector

Connectors and Pin Assignments

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

The DB-9 Console/Comm Port connector (Figure D-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.

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619EA

Figure D-4. DB-9 Console/Comm Port Connector

Table D-2 lists the DB-9 Console/Comm Port connector pin assignments.

Table D-2.	DB-9 Console/Comm 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

309985-C Rev 00 D-5