Hi I have a fiber mux that converts the signal into DS3 which is terminated on a cisco 6513, IOS 12.2(18)SXF14, WS-X6582-2PA module.
From the Mux to the Cisco its about 10 feet, I have no control of the mux fyi. Out of this Mux I have 3 DS3, two of them have a lot more C-bit/P-bit errors...