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MAINTENANCE
I = Input
O = Output
ISDN
BRI U
61202192L1-1
Pin
Name
I/O
1
CD
N/C
2
RD
O
3
TD
4
DTR
N/C
5
GND
N/A
6
DSR
N/C
7
RTS
8
CTS
O
9
RI
N/C
N/A = Not Applicable
Pin 1
Loop 1
Pin 2
Loop 1
Pin 3
no connection
Pin 4
Loop 2 (Express L1.5 only)
Pin 5
Loop 2 (Express L1.5 only)
Pin 6
no connection
Pin 7
no connection
Pin 8
no connection
Express L768/L1.5 User Manual
Appendix D
Connector Pinouts
IBM/AT Style EIA-232 Interface
Description
Carrier Detect
Receive Data
I
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
I
Request to Send
Clear to Send
Ring Indicator
N/C = Not Connected
RJ-45 HDSL BRI U
Table D-A
Table D-B
103
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