TRI-17 II is rack-mountable mission instrument that features a 17-inch touchscreen and GT user interface. It supports either a telephony or a VoIP system interface. The user can tap soft line keys to acces voice circuits and soft function buttons to activate advanced functions such as conference focus, conference broadcast, and conference join. It connects with two CONTEX systems, one secure and the other non?secure, via a Secure Digital Audio Processor (SDAP) module.