TL421A
4-Port RJ-45 Modem Splitter (RS-232 on RJ-45)
Split data from a single modem to four RS-232
DTEs.
Passive, non-powered. Operates transparent to data formats and speeds.
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax
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Support
724-746-0746 • Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence,
Information
4-Port RJ-45 Modem Splitter (RS-232 on RJ-45)
3. Installation
There are no user-configurable settings in the 4-Port RJ-45 Modem Splitter. Simply
connect your modem or other DCE device to the Master port, and connect your
terminals or other DTE devices to Ports 1–4 on the Modem Splitter. For the GND
signal and any signals that flow from the DCE to DTE direction, use Pins 3, 4, 5, 7,
and 8. For signals that flow from the DTE to DCE direction, use Pins 1, 2, and 6. A
typical configuration would be to connect RTS, DTR, and TD to Pins 1, 2, and 6
respectively, and to connect RD, GND, RI, DCD, and CTS to Pins 3, 4, 5, 7, and 8.
Once all the connections have been made, power up your modem and terminals as
normal. The system is now ready for operation.
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TL421A, version 2
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