Pin-Outs; Null-Modem Cable; Pc-At Serial Cable - 3Com SuperStack 3C16115 User Manual

148 A B: C
PPENDIX ABLE

Pin-outs

Null-Modem Cable

PC-AT Serial Cable

S P -
PECIFICATIONS AND IN OUTS
9-pin to RS-232 25-pin
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Cable connector: 9-pin female
Screen Shell
TxD 3
RxD 2
Ground 5
RTS 7
8
CTS
DSR 6
DCD 1
DTR 4
9-pin to 9-pin
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Cable connector: 9-pin female
Screen Shell
DTR 4
TxD 3
RxD 2
CTS 8
Ground 5
DSR 6
RTS 7
DCD 1
PC/Terminal
Cable connector: 25-pin male/female
Screen
1
3 RxD
2 TxD
7 Ground
4 RTS
20
DTR
CTS
5
6 DSR
8 DCD
PC-AT Serial Port
Cable connector: 9-pin female
Shell Screen
1 DCD
2 RxD
3 TxD
4 DTR
5 Ground
6 DSR
7 RTS
CTS
8
only required if screen
always required
required for handshake
only required if screen
Required for handshake
always required
required for handshake
always required
required for handshake