In article ,
NoSpam writes:
My wife has a small business and whenever they call anyone it shows as
"number withheld". I've looked through the (large) manual for the phone
system and can't find anything in there about withholding number so
suspect it's something in the exchange that needs to be turned on or off
- is there a magic code I can type in or do we need to speak to BT (or
whoever it is) and get them to do it?

The phone system is a Panasonic KX-TA624, if it's relevant.

If it has multiple exchange lines, BT default to withholding, because
actually only one of the lines has your real number, the others have
different numbers which would be presented. To get around this, you
would need to have Presentation Numbers attached to the other lines,
which is a service you have to pay for. At least, that's how it used
to work.

You could try the 1470 trick, but you might find it's permanently
withheld rather than just default withheld.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]