The voice pillar owns one outcome: no inbound call goes unanswered, and the ones that arrive turn into booked work rather than messages. Triage, qualification, live booking, and escalation, running on the same number your customers already have.
Between 5pm and 8am, and during the volume spikes — storm weeks, heat waves, the Monday after a holiday. Those are the hours with the highest-margin calls and the least coverage, which is why after-hours capture is the line item that pays for the whole system in most builds.
It will not take card details on the line, diagnose anything a licensed person should diagnose, or argue with a caller who wants a human. All three are deliberate limits with explicit handlers, because the failure mode that costs real money is an agent that keeps going when it should have stopped.