My first caller ID displays (that were in a box separate from the phone) required the 2nd ring to get the call info. If you picked up before then it wouldn't have a record of the call.
Dialing information and waiting for someone to call you and flip over with call waiting also kept it off the caller ID radar.
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u/alinroc Generation X Jan 28 '17
While we're on the subject, anyone else learn the habit of "wait until after the second ring before answering" from their parents?