23:5323:53, 19 August 2012diffhist+27
Telephone booth
Rewritten this section into general terms to describe prepay & postpay units, since the existing wording with reference to U.K. operation was misleading.
22:4222:42, 19 August 2012diffhist+11
DTMF
Added reference to # also sometimes being known as diamond. Origin is from early prototype DTMF keypads which did use a diamond symbol in this position instead of #.