Well our phone problem was cleared up yesterday, so thankfully this won't end up
being one of these protracted mysteries. A different technician came to check
things out, and thankfully he started from scratch, so he was not distracted by
the previous tech's misdiagnosis. It turns out that there was a short in one of
the phone wires in my office... the problem cleared up when I unplugged
everything from the jack, and when he asked me if I had a splitter plugged into
it I had to laugh, as this one jack has a three-way two-line splitter, which has
a two-way splitter plugged into it, as well as a couple of DSL line filters, and
of course, a whole bunch of wires. The silliest part of all this is that when I
figured out which wire it was, I traced it around to, well, nowhere, as it was
not even plugged into anything. D'oh!
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