Copper Serial T1 conversion to customers premise fiber

[jsmitty10]

I was wondering what would be easiest way to convert the current extended wiring (approx 400 feet) using the customers existing copper trunk (200 pair) to fiber? The equipment is a 2600 series router with an integrated CSU/DSU wic.I don't know if Adtran or someone makes a single fiber MUX or can I use a fiber/copper media converter?

[fmeetz]

If the concern is cost you could better use fiber/copper. If the concern is speed you could use fibre multiplexer.