1 Description
16
2
Data Terminal Ready
DTR
4
3
Transmitted Data
TD
3
4
Signal Ground
SGND
5
5
Ring Indicator
RI
9
6
Received Data
RD
2
7
DCD or DSR
DCD/DSR
1 or 6
8
Clear to Send
CTS
8
RJ-45
Signal
Abbreviation
DB9
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