"Clive D. W. Feather" wrote in message
...

Could it be that A/B phones could only be used for local calls?

You could only use them for local calls. STD didn't exist, so you had to
call the operator. She (or he at night) told you how much to insert for your
trunk call, and when to press button A.
--
Terry Harper, Web Co-ordinator, The Omnibus Society
75th Anniversary 2004, see http://www.omnibussoc.org/75th.htm
E-mail:
URL: http://www.terry.harper.btinternet.co.uk/