All Circuits Are Busy Now…

I just tried to call my sister (Becky, if you’re reading this and I haven’t called you yet, please call me) and the phone company passed off a message to me saying that, “All circuits are busy now, please try again later.” Why does that feel so 1980’s? I feel like I should be able to call Nevada and not run out of circuits… is the mob running some kind of assault or phone DOS on Nevada (again)?