somebody without caller ID tried calling me at 20:15 on Saturday night and gave up – somthing I hate terribly

I actually preferred, if my telephone system wouldn't tell me that. Why don't they have such an option? I would even love it, if my telephone system would tell callers without caller ID, to call again later with caller ID and that calling me without caller ID is (technically) unacceptable.

Update 2011-09-09 23:41 :
Happily identified ;-)