Flow control won't work when down line loading 7 data bits.

If the channels are configured with Xon/Xoff flow control, pacing enabled, down line loading enabled and the channels are using 7 data bits on the down line load side. Firmware revisions 4.07 or older had a problem with the down line load mux that receives a Xoff will stop the flow of data, but will fail to recognize an Xon character causing the mux channel to lock up. Firmware version 4.08 or greater will correct this.