Nyquist C4000 System Software - Queued Paging/Page Stacking - license - 1 queue

In addition to allowing multiple users to simultaneously page to the same zone or zones (e.g., in airport terminals, etc.), Queued Paging is an effective way to eliminate feedback in areas where a paging device (e.g., phone, microphone, etc.) may be in close proximity to speakers receiving the page.