3Com 3CR17450-91 Two-Way Radio User Manual


 
B
PIN-OUTS
Null Modem Cable RJ-45 to RS-232 25-pin
PC-AT Serial Cable RJ-45 to 9-pin
Screen
TxD
RxD
Ground
RTS
CTS
DSR
DCD
DTR
Screen
RxD
TxD
Ground
RTS
DTR
CTS
DSR
DCD
Shell
3
2
5
7
8
6
1
4
1
3
2
7
4
20
5
6
8
Switch 3870
Cable connector: RJ-45 female
PC/Terminal
Cable connector: 25-pin male/female
only requiredifscreen
always required
required forhandshake
Screen
DTR
TxD
RxD
CTS
Ground
DSR
RTS
DCD
Screen
DCD
RxD
TxD
DTR
Ground
DSR
RTS
CTS
Shell
4
3
2
8
5
6
7
1
Shell
1
2
3
4
5
6
7
8
Switch 3870
Cable connector: RJ-45 female
PC-AT Serial Port
Cable connector: 9-pin female
only requiredifscreen
Always required
always required
required forhandshake
required forhandshake
Required for handshake
DUA1745-0AAA02.book Page 63 Monday, August 9, 2004 11:51 AM