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APPENDIX B: Interface Settings
RS-232 Modular Interface: 10-Wire RJ-45
Contact Number
Circuit
Description
1
N/A
Not Used
2
107
DSR
3
109
Received Line Signal Indicator (CD)
4
108/2
DTE Ready (DTR)
5
102
Signal Common
6
104
Received Data
7
103
Transmitted Data
8
106
Clear to Send
9
105/133
Request to Send/Ready for Receiving
10
N/A
Not Used
Pins 2–9 conform to the EIA/TIA-561 eight-position non-synchronous interface
standard.
RJ-11
RJ-11
RJ-45
RJ-45
RJ-45
RJ-45
RJ-45
RJ-45
(8
(8
(1
(1
(6-pin)
(6-pin)
(10-pin)
(10-pin)
Appendix B. Interface Settings
For all modular jacks
(6-, 8-, or 10-position):
Pin 1 is always toward the
bottom when the rear card is
oriented correctly in the slot.