This license is for customers who have installed SingleWire's InformaCast, also known as the Cisco Paging Server. It allows them to connect 2N IP intercoms as additional full-featured devices to the InformaCast paging system and subsequently use it for various live group paging applications. Typically, these are emergency announcements and notifications (such as a fire in the building), predefined audio messages (like a school bell) or live announcements.