This is a quick hack to visualize the output of adsl showbins on a DrayTek Vigor modem/router. It shows how many bits are assigned to each bin on an ADSL line and thus lets you get a quick overview of what your line's usable spectrum looks like. When I found a cheap Huawei Echolife HG612 (one of two models currently used by BT OpenReach for their FTTC lines), I've ported it to that format as well.
How to use
Pick your modem: