For places in the world that charge for local calls (e.g. the UK & Australia), I think it would -really- help to have a simple way for the e-smith box to tell us how many telephone calls were made, maybe their lengths (e.g. in min's) and times of days, dates & days of week.
Even those who -don't- get charged a "call tick" for each local call (or even by the minute...) would have the chance to see when the ISP may be hanging up (i.e. before its "maximum connect time"), or otherwise losing contact with the e-smith box, e.g. due to line noise, etc.
I suppose the info is in some log(s) already, but I suppose it's mixed with lot of other (unrelated) lines, et al.