A DNIS answers only while the campaign runs · Worked example

State drill

List three states you would check before a trunk ticket.

Campaign running
DNIS attached
Script assigned

Busy is explained or you have a real trunk symptom.

Stopped inbound? Busy.
What runs after answer? The campaign IVR.
What is DNIS? The called number presented to the campaign.
First busy check? Is the campaign running?

Sources and go deeper

Inbound campaigns. vendor. last checked 2026-10.
ITU-T E.164, international public telecommunication numbering. standard. last checked 2026-10.
Interactive voice response. wikipedia. last checked 2026-10.