PRO version of the Intercom Application for the RSP-2318 SmartPanel; turns the RSP-2318 User Interface into an Intercom Panel; supports 18 keys; individual volume control; supported connectivity: AES67/AVB, Ethernet; 2 Headsets, 2 USB ports, 2 analog 4-Wire, expansion panel connectivity, option slot, 3 GPI-In and 3 GPI-Out.