Connecting The Cables; Console Cable - 3Com Switch 7700 Installation Manual

2. Hold the ejector levers on the fan frame with both hands and push them outward. Align the fan with the
guides in the chassis and slide it gently into the slot. Push the I/O Module until its positioning pin touches
the hole in the chassis.
3. Push the ejector levers inward and push the handle bar pin into the hole in the chassis.
Warning:
For safety, do not touch any part of the product that is labeled with dangerous voltage labels.

5.6. Connecting the Cables

This section describes how to connect console and AUX cables to the Switch 7700.

5.6.1. Console Cable

The console cable is an 8-core shielded cable. One end of the cable has a crimped RJ-45 connector, which is plugged
into the console port of the switch. The other end has both a DB-9-hole connector and a DB-25-hole connector for
connection to a 9- or 25-hole serial port at the configuration terminal. Figure 16 illustrates the console cable and
connectors.
Figure 16 The console cable
Enlarged A
Pos.
A
Pos.
Table 25 Console cable pin-outs
RJ-45
1
2
3
4
5
6
7
8
To connect a terminal or PC to the Switch 7700 with the console:
DB 25
Signal Direction
RTS <----
DTR <----
TXD <----
CD --->
GND ----
RXD --->
DSR --->
CTS --->
I N S T A L L I N G
8P8C
Enlarged B
B
Pos.
DB9
Enlarged C
Pos.
C
Pos.
DB-25
4
20
2
8
7
3
6
5
H A R D W A R E
Pos.
DB-9
7
4
3
1
5
2
6
8
31