Pc Serial Port Pinouts - ZyXEL Communications U-336R/RE User Manual

PC Serial Port Pinouts

Signa
l Pin
134 Terminal Pinouts
ITU-TSS
Signal
Name
1 101
2 103
3 104
4 105
5 106
6 107
7 102
8 109
15 114
17 115
18 141
20 108/2
108/1
21 140
EIA Pin/Signal
Signal Description
Name
AA Protective Ground
(GND).
BA Transmitted
Data(TXD).
BB Received
Data(RXD).
CA Request To Send
(RTS).
CB Clear To Send
(CTS).
CC Data Set Ready
(DSR).
AB Signal Ground
(GND).
CF Data Carrier
Detected (DCD).
DB Transmit Clock
Signal (source:
DCE).
DD Synchronous
Receive Clock.
Local Analog
Loopback Test.
CD Data Terminal
Ready (DTR).
Connect DCE to
line
Remote Digital
Direction
DTE-
DCE