QTech QSR-2920 Series

Installation Manual
7. Appendix 77
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7.7. Cables
1.7.7. Console Cables
Connected to the nine-core serial interface socket of the PC, the console cable of the QSR-2920
series router is an eight-core unshielded cable. The one side of the cable is the crimping RJ-45
crystal plug and the other side is a DB9 (hole). The view of the console cable is shown in the
following figure.
Appendix figure 7.3.6.2-1 Console cable
The connection relationship of the internal signal of the console cable is shown in the following
table.
Appendix Table 7.3.6.2-1 Connection relationship of the console cable
RJ-45
Signal
Direction
DB-9
1
RTS
→
8
2
DTR
→
6
3
TXD
→
2
4
GND
――
5
5
NC
――
――
6
RXD
←
3
7
DSR
←
4
8
CTS
←
7
――
――
1
――
――
9