Barge-in is the ability of a caller to interrupt a voice system while it is speaking and have the system stop, listen, and respond appropriately.

Why Barge-in matters

Natural conversations involve correction and interruption; forcing a caller to wait through a long response creates frustration and slows the interaction.

How it works in practice

Reliable barge-in distinguishes the caller's voice from echoes or background sound, stops playback quickly, preserves conversational context, and recovers without losing the task.