Installation Manual
Quidway S3000-EI Series Ethernet Switches
Chapter 3 Installation
3-9
connector. Users can choose one of them to fit the DB-9 (female) or DB-25 (female)
jack on the analog Modem as needed.
The following figure illustrates the AUX cable.
Enlarged A side
Pos.1
Pos.25
DB25 Male
A
DB9 Male
Label
8P8C PLUG
B
Enlarged B side
Pos.1
Pos.8
Enlarged C side
Pos.9
Pos.1
C
Figure 3-10
AUX cable
Table 3-2
AUX cable connection
RJ-45 Signal Direction
DB-25
DB-9
1 RTS
→
4 7
2 DTR
→
20 4
3 TXD
→
2 3
4 CD
←
8 1
5 GND - 7
5
6 RXD
←
3 2
7 DSR
←
6 6
8 CTS
←
5 8
3.4.2 Connection of AUX Cable
Step 1: Plug the RJ-45 connector of AUX cable into the Console port of the switch.
Step 2: Connect the DB-25 (or DB-9) male connector to the serial port of the analog
Modem.
3.5 Installation of the Optional Interface Modules
3.5.1 Installation of the Optional Interface Modules