Cables, Connectors, and Pin Assignments

E-3

9161-A2-GH30-30 April 1998
COM Port-to-Modem Cable

Order this cable when connecting the COM port to a modem or other external

device. The following shows the pin assignments from the COM port to the

external device.

1
2
3
4
5
6
7
8
97-15669
COM Port
Non-Keyed
8-Position
Modular Plug
Tx Clock
Rx Data
Signal Ground
Tx Data
DTR
CD
RTS
Rx Clock
2
7
3
6
4
20
5
Tx Data
Signal Ground
Rx Data
DSR
RTS
DTR
CTS
Modem
DB25 Plug
No
Connection
No
Connection
Gender Adapter/Changer

When connecting the COM port to a router or Frame Relay Assembler/

Disassembler (FRAD), a gender adapter is required to convert the

COM Port-to-Terminal/Printer cable’s plug-type interface to a socket-type

interface for the AUX port.