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• Attach a whole bank of modems and have the Terminal Server
function as a front-end processor for your UNIX host’s remote data
communication.

• Attach a system of RS-232 sensors and data loggers and feed the
data through your LAN to your monitoring server running
Windows NT.

Typical Applications

• The Enhanced TCP/IP Terminal Server.

• (1) AC power cable (not included for DC versions).

• (1) 3.5" software diskette.

• (2) mounting brackets (for 40870,-R2 40871-R2, 40870-DC-R2, 40871-
DC-R2) or (4) mounting brackets (for 37687-R2, 37688-R2).

NOTE: No mounting brackets are included with the 41872-R2 or
41874-R2.

• (1) RS-232 loopback-test connector.

• (1) 10BASE-T loopback-test connector.

• A user’s manual.

• An electrical-safety booklet.

The Complete Package:

• Cables to run your equipment.

• AC-power and data-line surge protectors.

Additional Equipment You May Need:

Ordering Information

ITEM

CODE

Enhanced TCP/IP Terminal Servers

Standalone with DB25 Connectors

8-Port....................................................................37688-R2
16-Port..................................................................37687-R2

Standalone with RJ-45 Connectors

2-Port....................................................................41872-R2
4-Port....................................................................41874-R2

Rackmount with RJ-45 Connectors

8-Port....................................................................40871-R2
8-Port, 48 VDC.............................................40871-DC-R2
16-Port..................................................................40870-R2
16-Port, 48 VDC...........................................40870-DC-R2

To adapt the RJ-45 ports for your serial devices,
order…

Serial Adapters

PC/Terminal DTE (RJ-45 F/DB 9 F)...........................FA705
PC/Terminal DTE (RJ-45 F/DB25 F) .........................FA706
Modem DCE (RJ-45 M/DB25 F) ...............................FA707

You might also want to order…

For modems:

Straight-through pinned RS-232 cable,

DB25 male to DB25 male, 
10-ft. (3-m) ........................................ECM25C-MM-0010

For PCs, terminals, printers (DTEs):

Proper cross-pinning can vary depending on your

equipment. Please call Black Box Technical Support at
724-746-5500 to make sure you get the right cable for
your application.

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