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Cable Specifications and Information
This appendix provides the connector and pinout information you need for making or purchasing cables used with Cisco VG350 Voice Gateway. To order cables from Cisco, see the "Obtaining Technical Assistance" section. This appendix contains the following sections:
•Console and Auxiliary Port Cables and Pinouts
•Gigabit Ethernet Port Pinouts (RJ-45)
•Analog Voice Multiport Pinouts (RJ-21X/CA21A)
The following list shows you which table to see for pinout information:
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|
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Console Port to ASCII Terminal—Cable Pinouts (RJ-45 to DB-25) |
|
Console and Auxiliary Port Cables and Pinouts
Your Cisco VG350 Voice Gateway comes with the cable and adapters you need to connect a PC, an ASCII terminal, or a modem to your Cisco VG350 Voice Gateway. The cable kit includes:
•RJ-45-to-RJ-45 rollover cable
•RJ-45-to-DB-9 adapter cable for console connection
•RJ-45-to-DB-25 adapter cable for modem connection
The following illustrations and tables provide cable pinout information:
•Console port to a PC—See Table A-1 and Table A-4
•Console port to an ASCII terminal—See Table A-2 and Table A-4
•Auxiliary port to a modem—See Table A-3 and Table A-4
The console port is configured as data communications equipment (DCE); the auxiliary port is configured as data terminal equipment (DTE). Both are asynchronous serial ports and use RJ-45 connectors.
Console Port to PC
Figure A-1 shows the RJ-45-to-RJ-45 rollover cable assembly and the RJ-45-to-DB-9 female DTE adapter (labeled TERMINAL); Table A-1 lists the pinouts.
Figure A-1 Console Port to PC—Cable and Adapter

|
|
|
|
||
---|---|---|---|---|---|
|
|
|
|
|
|
RTS |
11 |
8 |
8 |
8 |
CTS |
DTR |
2 |
7 |
7 |
6 |
DSR |
TxD |
3 |
6 |
6 |
2 |
RxD |
GND |
4 |
5 |
5 |
5 |
GND |
GND |
5 |
4 |
4 |
5 |
GND |
RxD |
6 |
3 |
3 |
3 |
TxD |
DSR |
7 |
2 |
2 |
4 |
DTR |
CTS |
81 |
1 |
1 |
7 |
RTS |
1 Pin 1 is connected to pin 8 inside the Cisco VG350 Voice Gateway. |
Console Port to ASCII Terminal
Figure A-2 shows the RJ-45-to-RJ-45 rollover cable assembly and the RJ-45-to-DB-25 female DTE adapter (labeled TERMINAL); Table A-2 lists the pinouts.
Figure A-2 Console Port to ASCII Terminal—Cable and Adapter

|
|
|
|
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---|---|---|---|---|---|
|
|
|
|
|
|
RTS |
11 |
8 |
8 |
5 |
CTS |
DTR |
2 |
7 |
7 |
6 |
DSR |
TxD |
3 |
6 |
6 |
3 |
RxD |
GND |
4 |
5 |
5 |
7 |
GND |
GND |
5 |
4 |
4 |
7 |
GND |
RxD |
6 |
3 |
3 |
2 |
TxD |
DSR |
7 |
2 |
2 |
20 |
DTR |
CTS |
81 |
1 |
1 |
4 |
RTS |
1 Pin 1 is connected to pin 8 inside the Cisco VG350 Voice Gateway. |
Auxiliary Port to Modem
Figure A-3 shows the RJ-45-to-RJ-45 rollover cable assembly and the RJ-45-to-DB-25 male DCE adapter (labeled MODEM); Table A-3 lists the pinouts.
Figure A-3 Auxiliary Port to Modem—Cable and Adapter

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-4 for usable cable and adapter combinations.
|
|
|
---|---|---|
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. |
Gigabit Ethernet Port Pinouts (RJ-45)
Figure A-4 shows the RJ-45 connector wiring for the Gigabit Ethernet cable; Figure A-4 lists the pinouts.

Note Pinout shown is for category 3, 4, or 5 10/100BASE-T connection to an Gigabit Ethernet switch.
Figure A-4 RJ-45 Connector Wiring

|
|
---|---|
1 |
TX+ |
2 |
TX- |
3 |
RX+ |
4 |
- |
5 |
- |
6 |
RX- |
7 |
- |
8 |
- |
1 Any pin not referenced is not connected. |
Analog Voice Multiport Pinouts (RJ-21X/CA21A)
Figure A-5 shows the RJ-21 connector wiring for the cable used for the multiport analog voice interface.
Figure A-5 RJ-21 Connector Wiring

Table A-6 lists the pinouts for the RJ-21 connector.