Electro Standards Laboratories 2-Channel DB25 A/B Switch Model 7229

Each channel of the PathWay® Model 7229 allows the user the capability of sharing a DB25/X.21 BIS Interface device connected to the Common port connector between two other X.21 BIS Interface devices connected to the A and B ports.The switch may be controlled locally by manually operating the front-panel pushbutton or remotely from a DB9 female serial interface Remote port located on the rear of the unit. Local switching is achieved by simply pressing the front-panel pushbuttons. The switch will change to the newly selected position as indicated by the front panel LED's. One channel can be made the "Master" channel and can be used to control the switching of both channels.