Alternative Connections To Terminal And Modem; Gigabit Ethernet Port Pinouts (Rj-45) - Cisco 450 Hardware Installation Manual

Alternative Connections to Terminal and Modem

Auxiliary
Port
(DTE, RJ-45)
RTS
DTR
TxD
GND
GND
RxD
DSR
CTS
Alternative Connections to Terminal and Modem
Your Cisco VG450 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.
Table 9: Alternative Terminal and Modem Connections
Cisco VG450 Port Connection
Console port to PC
Auxiliary port to modem
4
5

Gigabit Ethernet Port Pinouts (RJ-45)

Figure A-4 shows the RJ-45 connector wiring for the Gigabit Ethernet cable; Table A-5 lists the pinouts.
Note Pinout shown is for category 3, 4, or 5 10/100BASE-T connection to an Gigabit Ethernet switch.
Cisco 450 Voice Gateway Hardware Installation Guide
32
RJ-45-to-RJ-45 RJ-45-to-DB-25
Rollover Cable Adapter
"MODEM"
1 8
2 7
3 6
4 5
5 4
6 3
7 2
8 1
RJ-45 Cable Type
Straight-through
Rollover
Straight-through
An octal cable or RJ-45 breakout cable is equivalent to a rollover cable.
Modify the DB-25 adapter by removing the wire in pin 6 and placing it in the pin 8 position.
Modem Port
(DCE,
DB-25)
8 4
7 20
6 2
5 7
4 7
3 3
2 8
1 5
Adapter
DCE, DB-9 female
4 5
DCE , DB-25, male
DTE2, DB-25, male
Cable Specifications and Information
RTS
DTR
TxD
GND
GND
RxD
DCD
CTS