Appendix d connector pinouts, Connector pinouts, Appendix d – ADTRAN Express 4120 User Manual
Page 177
61200176L3-1
Express 4110/4120 User Manual
D-1
Appendix D
Connector Pinouts
Table D-1. IBM/AT Style EIA-232 Interface
I = Input
O = Output
N/A = Not Applicable N/C = Not Connected
Table D-2. RJ-49C ISDN
Pin
Name
I/O
Description
1
CD
N/C
Carrier Detect
2
RD
O
Receive Data
3
TD
I
Transmit Data
4
DTR
N/C
Data Terminal Ready
5
GND
N/A
Signal Ground
6
DSR
N/C
Data Set Ready
7
RTS
I
Request to Send
8
CTS
O
Clear to Send
9
RI
N/C
Ring Indicator
Pin 4
Ring
Pin 5
Tip
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