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Model 4121 Automatic Fallback A/B Switch Offered To Government Purchasers via GSA Schedule GS-35F-0286V

August 19, 2010

 

Model 4121 Automatic Fallback and Recovery A/B Switch with Remote Management Port

Electro Standards Laboratories, Cranston, RI, announces the addition of its PathWay┬« Model 4121 Automatic Fallback and Recovery A/B Switch with Remote Managment Port to its GSA Schedule GS-35F-0286V. City, state, and federal government purchasers receive a 10% discount from list price, 2% 20 Days prompt payment terms, and free UPS Ground shipping in the continental U.S.  Credit card payments are accepted. The Model Model 4121 is manufactured in the USA.

The PathWay® Model 4121 Automatic Fallback Data Network Switch with Remote Management Port allows the user the capability of sharing a single DB25 interface device connected to the Common port among two other devices connected to the A and B ports.

How the Fallback and Recovery System Works
The Model 4121 monitors data activity on port A.  If activity is lost, the unit automatically switches to port B.  The Model 4121 will maintain its connection to port B while data activity is not present on port A.  At any point, if data activity is detected on port A, the unit will automatically return to the A position. 

How To Override Automatic Fallback Operation
The user can override automatic fallback operation from the front panel and force the unit to operate as an A/B switch.  The user can monitor as well as control the unit remotely through the Remote DB9 port by way of RS232 commands.

For more information on the Model 4121 or any of the other copper or fiber optic network switches manufactured by Electro Standards, call 401-943-1164.