The PathWay® M7417R single channel DB25 A/B switch with automatic fallback allows the user capability of switching a channel or its ALTERNATE output data channel.

The QuickSwitch model 6214 is a fiber optic LC duplex network switch with local pushbutton, and remote DB9 port for switching. This switch uses independent channel control to switch across the three channels, and 3 positions, A or B and Offline.