[EEMac]

There was a science fiction story about this, with phone auto-message and auto-answer systems connecting with each other long after all the humans were dead.

[dTal]

Can you remember the story? It sounds thematically similar to "There Will Come Soft Rains", but the details don't match.

https://en.wikipedia.org/wiki/There_Will_Come_Soft_Rains_(sh...