This function configures a mutiplexed output channel which can output a variety of different signals (such as NI's RTSI and PFI lines). The routing parameter selects which signal should be routed to appear on the selected output channel, and is driver-dependant.
The routing may be queried with the comedi_get_routing function. This function is only useable on subdevices that provide support for the INSN_CONFIG_SET_ROUTING configuration instruction.