[lettercarrier]

The telephone was a shared device, and as a child it was not mine. In college, it was shared with 4 other people (and still not mine). Then once married, it was shared with my spouse.

But now there is no more 'shared voice device.' It is not pratical to not own a phone. But all cell phones are not sharable. Hence, by default, either I carry a phone and the contact person knows explicitly I am ignoring them or I answer it. But when the only game in town was a simple telephone, a busy signal or no answer just meant nobody is available. Nothing else. But now, with my phone, I can no longer say I am not available, imo.