The Intercom & Paging Application firmware is the perfect solution for building intercom and paging systems over IP networks with a full-featured master-slave functionality. With this firmware, it’s easy to define groups and zones or multi-master architectures to switch to another control office when the first one is not reachable (f.e. during day/night shift). The same software can be set as ICMaster or ICClient after the installation. The client version supports multichannel Background Music and interrupting voice announcements. On the master station, incoming calls can be shown on the display, set on hold or rejected.  The additional ICgraph Java application allows to develop fully customized graphical interfaces for paging & control from PC. ICGraph is running on various operating systems.