I expect there will be people who reply to this comment to argue it should be "E-T-C" or "Et Cetera". You can ignore those people; they probably say "exclamation mark" instead of "bang".
I know the old Bell manuals actually spelled out "et cetera" long hand in places, but still, any time i hear someone say that out loud meaning the directory, i have a (wholy irrational) cringe reaction!