In message , Clive D. W. Feather
writes
If you make the numbers different lengths it makes the routeing logic
more complicated and, therefore, more expensive. You have to plan for
the longest number.
The only country where I've ever noticed major differences in number
length is Germany, where they can be very variable, even on the same
exchange.
--
Ian Jelf, MITG
Birmingham, UK
Registered Blue Badge Tourist Guide for London and the Heart of England
http://www.bluebadge.demon.co.uk