3. Preparation of Interface Cables and Terminals
RJ 45 pin
number
#1: Connect to the pin if you are using a 4-pair, 8-core cable.
#2: Twisted pair line. Use (A) and (a), (B) and (b), (C) and (c), (D) and (d) in pairs for
a 4-pair, 8-core cable. Use (A) and (a) and (B) and (b) in pairs for a 2-pair, 4-core
cable.
3.3.3 Connecting a modem to the AUX port
To connect a modem to the AUX port of the Switch, use an RS-232C
straight-through cable with a 9-pin (female) D-SUB connector and a 25-pin (male)
D-SUB connector, and use #4-40 inch screws.
The following figure shows the pin arrangement of an RS-232C straight-through
cable.
Figure 3-2 Modem connection cable
86
10BASE-T
#1
8
Not used
Physical specifications
(d)
Not used
100BASE-TX
#1
(d)