In article ,
Peter Parry writes:
On Sun, 19 Nov 2006 21:33:02 GMT, James Hawkins
wrote:

Does anyone know specifically why they don't do this, or don't at
least present the country of origin?

The calls route through a number of countries and the routes change
by the minute depending upon bulk traffic costs. The originating
country isn't always easy to work out (as CLI information isn't
universal).

If I redirect my landline to my mobile, international callerid is
displayed, so BT clearly have it and pass it on in the redirection.
It usually looks reasonable (it's always correct in the case of
callers I know), but occasionally it's clearly garbage.

There may be problems with some of the exchanges not being able
to handle international numbers in the callerid software (e.g.
more digits). That's the only reason I can imagine BT mark all
international calls with UNAVAILABLE when they clearly do have
the number to hand.

--
Andrew Gabriel