Abstract: Described herein are techniques for monitoring signal paths of a media converter and finding faults within those signal paths. For instance, techniques may include monitoring signal paths associated with a media converter to discover a path failure, wherein each of the paths can include a RX portion associated with a different physical transmission media, and a path failure is discovered when a signal expected to be received by one of the RX portions is absent. The techniques may also include, upon discovery of a path failure, providing an emulated signal over a signal path associated with the path failure and/or providing an emulated signal over a remainder of the paths, such that all the signal paths continue to communicate signals, and such that at least one of the RX portions of the paths is identified as associated with the path failure.