Appendix e connector pinouts, Eia-232 interface – ADTRAN ISU 128 User Manual
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ISU 128 User Manual
115
Appendix E
Connector Pinouts
Figure E-1
EIA-232/RS-530 Interface
Table E-A
EIA-232 Interface
Pin
Name
I/O
Description
1
Shield
I/O
Shield for cable
2
TD
I
Transmitted Data
3
RD
O
Received Data
4
RTS
I
Request to Send
5
CTS
O
Clear To Send
6
DSR
O
Data Set Ready
7
SG
I/O
Signal Ground
8
CD
O
Carrier Detect
9
NC
N/A
No Connection
10
NC
N/A
No Connection
11
NC
N/A
No Connection
12
NC
N/A
No Connection
13
NC
N/A
No Connection
14
NC
N/A
No Connection
15
TC
O
Transmit Clock
16
NC
N/A
No Connection
17
RC
O
Receive Clock
18
NC
N/A
No Connection
19
NC
N/A
No Connection
20
DTR
I
Data Terminal Ready
21
NC
N/A
No Connection
22
RI
O
Ring Indicator
23
NC
N/A
No Connection
24
ETC
I
External Transmit Clock
25
NC
N/A
No Connection
I= Input, O= Output, N/A= Not Applicable
PIN 13
PIN 1
PIN 25
PIN 14
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