Cisco Systems SMD48FXSE Auxiliary Port to Modem, Alternative Connections to Terminal and Modem

Appendix A Cable Specifications and Information

Console and Auxiliary Port Cables and Pinouts

Auxiliary Port to Modem

Figure A-3shows the RJ-45-to-RJ-45 rollover cable assembly and the RJ-45-to-DB-25 male DCE adapter (labeled MODEM); Table A-3lists the pinouts.

Figure A-3 Auxiliary Port to Modem—Cable and Adapter

RJ-45-to-DB-25 male adapter

RJ-45 cable

8 1

CAB-5MODCM

MODEM

14

1

13

25

H11194

Table A-3 Auxiliary Port to Modem—Cable Pinouts (RJ-45 to DB-25)

Auxiliary Port	RJ-45-to-RJ-45		RJ-45-to-DB-25		Modem Port
(DTE, RJ-45)	Rollover Cable		Adapter “MODEM”		(DCE, DB-25)
Signal	RJ-45 Pin	RJ-45 Pin	RJ-45 Pin	DB-25 Pin	Signal
RTS	1	8	8	4	RTS
DTR	2	7	7	20	DTR
TxD	3	6	6	2	TxD
GND	4	5	5	7	GND
GND	5	4	4	7	GND
RxD	6	3	3	3	RxD
DSR	7	2	2	8	DCD
CTS	8	1	1	5	CTS

Alternative Connections to Terminal and Modem

Your Cisco VG350 Voice Gateway ships with an RJ-45-to-RJ-45 rollover cable and two adapters for connection to a PC, a terminal, or a modem. If you want to use an RJ-45 straight-through cable or other adapters, see Table A-4for usable cable and adapter combinations.

Table A-4	Alternative Terminal and Modem Connections
Cisco VG350 Port
Connection		RJ-45 Cable Type	Adapter
Console port to PC		Straight-through	DCE, DB-9 female
Auxiliary port to modem		Rollover1	DCE2, DB-25, male
		Straight-through	DTE2, DB-25, male

1.An octal cable or RJ-45 breakout cable is equivalent to a rollover cable.

2.Modify the DB-25 adapter by removing the wire in pin 6 and placing it in the pin 8 position.

Cisco VG350 Voice Gateway Hardware Installation Guide

A-4 OL-25970-01