You can only buy BT-to-RJ11 adapters, or anything to do with
UK plugs, in the UK and Ireland. Everywhere has
RJ11-to-local-type adapters. Many hotels use RJ11 for the phones in the rooms
If your hotel does have a local-type socket, wander into the
nearest vaguely-electrical-looking store. Wave the RJ11 under the
nose of the apparently-least-hard-of-thinking assistant and mime
plugging it into something and plugging that in the wall. (I did
discover the Finnish for "plug" in the process, but I
immediately forgot it and bought "ein Stecker" in mutually-broken German.
(Which reminds me: there are at least four kinds of phone
socket in Germany. Make a life-size sketch.)
Then, if they mime "we don't have it", mime walking to
another shop, look questioning, and get out a pen for them to write
down their suggestion of where you might get one. Usually the
second or third shop has one. In some cities phone shops sell them.
In others phone shops only sell in-country equipment but music
shops have them; and yet other cities still have old-style
electronics parts shops.
This has the added advantage that you feel you've been to
the place in question, rather than just blatting in for the
Beware that some hotels have digital switchboards which your
modem can't talk to. (There are reports of these frying modems,
too.) Ask at reception if you can see their fax
machine, then negotiate plugging your modem into its phone socket. Do
not try to explain the concept "email": tell them you want to
send a fax straight from your laptop.
Send your questions to firstname.lastname@example.org - those
which are answerable briefly will be published.