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Cabling and RJ-45 connector wiring
It is vital that the Ethernet cables used be the correct type of cable, and that they be
properly terminated with the correct pinout.
Choosing a network cable
Ethernet links use Category (CAT) 3, 4, 5, 5e, or 6, unshielded twisted pair (UTP)
or shielded twisted pair (STP) cables, terminated with RJ-45 connectors. Ethernet
cables are limited to 328' (100 m)
The cable used depends on the network speed. The ISM supports both 10 Mbps
(10Base-T — Ethernet) and 100 Mbps (100Base-T — Fast Ethernet), half-duplex and
full-duplex, Ethernet connections.
•
10Base-T Ethernet requires, at a minimum, CAT 3 UTP or STP cable.
•
100Base-T Fast Ethernet requires, at a minimum, CAT 5 UTP or STP cable.
Terminating the network cable
The cable can be terminated as either a patch cable or a crossover cable (figure 2-4)
and must be properly terminated relevant to the application:
•
Patch (straight) cable — Connection of the ISM to an Ethernet hub, router, or
switcher that also hosts a controlling computer.
•
Crossover cable — Direct connection between the ISM and a controlling
computer.
Side View
RJ-45 Connector
Figure 2-4 — RJ-45 connector pinout tables
d
Reset button and LED — Pressing this recessed button
causes certain IP functions and Ethernet connection settings
to be reset to the factory defaults. The green LED above the
button blinks a varying number of times to indicate which
reset mode has been entered.
"Resetting the unit with the reset button" section,
modes.
ISM 824 Integration Scaling Multiswitcher • Installation
Pins:
Straight-through Cable
1 2 3 4 5 6 7 8
(for connection to a switch, hub, or router)
End 1
Pin
Wire Color
1
white-orange
2
orange
3
white-green
4
blue
5
white-blue
6
green
7
white-brown
Insert
8
brown
Twisted
Pair Wires
(for direct connection to a PC)
End 1
Pin
Wire Color
1
white-orange
2
orange
3
white-green
4
blue
5
white-blue
6
green
7
white-brown
8
brown
See chapter 3, "Operation and Setup" ,
End 2
Pin
Wire Color
1
white-orange
2
orange
3
white-green
4
blue
5
white-blue
6
green
7
white-brown
8
brown
Crossover Cable
End 2
Pin
Wire Color
1
white-green
2
green
3
white-orange
4
blue
5
white-blue
6
orange
7
white-brown
8
brown
RESET
for information on reset
2-5
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