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Appendix B.
Interface Descriptions
RJ-45
Pin No.
1
2
3
4
5
6
7
8
CTS
DCD
RXD
TXD
GND
DTR
RTS
Request to Send
Ready Out
Data Out
Ground
Data In
Carrier Detect
Clear to Send
Pin 8
Pin 1
Figure B.1: SetUp Port Interface (RJ45, Cisco Pinout)
B.1. SetUp Port
DCD and DTR hardware lines function as follows:
1.
When connected:
a) If either port is set for Modem Mode, the DTR output at either port reflects the DCD
input at the other end.
b) If
neither
port is set for Modem Mode, DTR output is held high (active).
2.
When not connected:
a) If the port is set for Modem Mode, upon disconnect DTR output is pulsed for 0.5
seconds and then held high.
b) If the port is
not
set for Modem Mode, DTR output is controlled by the DTR Output
option (Serial Port Parameters Menu, Option 23). Upon disconnect, Option 23 allows
DTR output to be held low, held high, or pulsed for 0.5 seconds and then held high.