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BLACK BOX

®

Split data from a single modem to four RS-232 

DTEs.

Passive, non-powered. Operates transparent to data formats and speeds. 

4-Port RJ-45 Modem Splitter (RS-232 on RJ-45)

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  

724-746-0746  •  Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, 
PA 15055-1018  •  Web site: www.blackbox.com  •  E-mail: info@blackbox.com

Customer 

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Information

TL421A

Summary of Contents for TL421A

Page 1: ...litter RS 232 on RJ 45 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 724 746 0746 Mailing address Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com Customer Support Information TL421A ...

Page 2: ...Port RJ 45 Modem Splitter TL421A is designed to allow multiple terminals to share a single modem This passive device is non powered and transparent to data formats rates and protocols Data received from the modem is transmitted to all attached terminal devices Only one terminal device may send data to the modem at a time If more than one terminal device sends data at the same time the data will be...

Page 3: ...ces 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 pow...

Page 4: ...re products You ll find everything from cabinets and racks and power and surge protection products to media converters and Ethernet switches all supported by free live 24 7 Tech support available in 30 seconds or less Copyright 2011 Black Box Corporation All rights reserved Black Box and the Double Diamond logo are registered trademarks of BB Technologies Inc Any third party trademarks appearing i...

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