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CHAPTER 3: Configuration and Installation
3.5 Attaching Cables to the Switch
The FradSwitch A/S 3 Port has three numbered connectors on its rear panel for its
main device/WAN links (of which, on “-DDS” models, Port 1 will be the dedicated
DDS port), plus an RJ-45 connector on its front panel that serves as the supervisory-
control port. See the
Appendix
for the pinouts of these ports.
3.5.1 C
ONNECTING TO THE
C
ONTROL
P
ORT
The FradSwitch A/S 3 Port comes with a 6-ft. (1.8-m) RJ-45 male to DB25 female
adapter cable. You can attach the cable’s RJ-45 plug to the Switch’s control port
and plug its DB25 female connector directly into the DB25 male serial port of most
RS-232 ASCII terminals, older IBM PC compatible computers, and other terminal-
type equipment. Alternatively, with a standard DB25 male to DB9 female adapter,
you can run this cable from the Switch’s control port to the DB9 male serial port of
a newer IBM PC/AT or PS/2 compatible computer.
If you want to attach the control port to a terminal-type device at a greater
distance, you can do one of two things. You can either run high-quality straight-
through-pinned RS-232 or AT cable from the DB end of the adapter cable to your
device, or you can put aside the adapter cable, attach a specially pinned modular
adapter to your device, and run straight-though-pinned RJ-45 male to RJ-45 male
8-wire twisted-pair cable from the control port to the adapter. (Call Black Box
Technical Support to discuss either application. In neither case should you exceed
the normal RS-232 maximum distance of 50 ft./15.2-m.)
3.5.2 C
ONNECTING TO THE
DDS P
ORT
(“-DDS” M
ODELS
O
NLY
)
Run twisted-pair cable with four or more wires, terminated with RJ-48 plugs, from
your DDS port to your WAN-access device’s input port or your WAN direct-
connection point.
