ABBey 1234 (020 7222 1234) enquiry number is no more
00:33:14 on Tue, 26 Oct 2010, MIG
It leaves the question: why would it cost the mobile company more to
connect to one of these numbers than to connect to any other number?
It doesn't necessarily. Phone calls are not priced on a cost-plus
 Although it probably does cost the mobile phone company more to
carry the call from a handset to the interconnection point, than it
would cost many landline operators. If "cost" takes everything into