Clive Page wrote:
In article , Richard
J. writes
It may have something to do with the fact that people have no idea
what ITU or E.123 are. Please provide a reference to these alleged
standards.

That could be so. Have you heard of a body called the United
Nations? Well the International Telecommunications Agency, ITU, is
one of its technical agencies, with headquarters in Geneva. Its
website can be found at http://www.itu.int

Unfortunately you have to pay (CHF 20 I seem to remember) to get a
copy of any of its main documents

No wonder people don't follow their recommendations! But this might
help:
https://ecs.itu.ch/cgi-bin/register-for-freedownload2

[..]
Not true. Since there was at that time an 0181 222 exchange as
well as an 0171 222 exchange, the 222 xxxx format would not have
been unique.

I think you mis-understand - such numbers were unique within their
own zone.

Precisely. That's why your original statement (which you conveniently
snipped) that you could call London Transport enquiries *from a
telephone in London* by dialling "222 1234" was not true if the
telephone was in the 0181 part of London.

--
Richard J.
(to e-mail me, swap uk and yon in address)