It is the Sunday night of a long holiday weekend in Riverview. The office has been dark since Friday, you finally sat down, and somewhere a person who needs exactly what you do is hearing your voicemail greeting for the second time.
With after-hours answering, that person reaches a calm voice who knows your rules. True urgent calls go to whoever you have on call, and everything else gets a scheduled time or a clear message for first thing in the morning.
Monday stops starting with a pile of mystery voicemails. You open one tidy list of who called overnight, what each one needs and what was already promised, and the week starts ahead instead of behind.