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ZyWALL 10~100 Series Internet Security Gateway
Hardware Specifications 29
Cable Pin Assignments
In a serial communications connection, generally a computer is DTE (Data Terminal Equipment) and a
modem is DCE (Data Circuit-terminating Equipment). The ZyWALL is DCE when you connect a computer
to the console port. The ZyWALL is DTE when you connect a modem to the dial backup port.
Diagram H-1 Console/Dial Backup Port Pin Layouts
1
Chart H-2 Console/Dial Backup Port Pin Assignments
CONSOLE Port RS – 232 (Female) DB-9F
DIAL BACKUP RS – 232 (Male) DB-9M (Not on all
models)
Pin 1 = NON
Pin 2 = DCE-TXD
Pin 3 = DCE –RXD
Pin 4 = DCE –DSR
Pin 5 = GND
Pin 6 = DCE –DTR
Pin 7 = DCE –CTS
Pin 8 = DCE –RTS
PIN 9 = NON
Pin 1 = NON
Pin 2 = DTE-RXD
Pin 3 = DTE-TXD
Pin 4 = DTE-DTR
Pin 5 = GND
Pin 6 = DTE-DSR
Pin 7 = DTE-RTS
Pin 8 = DTE-CTS
PIN 9 = NON.
The CON/AUX port also has these pin assignments.
The CON/AUX switch changes the setting in the
firmware only and does not change the CON/AUX
port’s pin assignments.
ZyWALLs with a CON/AUX port also have a 9-pin
adaptor for the console cable with these pin
assignments on the male end.
1
Products without flow control only use pins 2,3 and 5.
Pin 1
Pin 6 Pin 9
Pin 5
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