The model FLEX IV DSP P is the most advanced LTR and conventional controller that combines the functions of an LTR Controller, LTR Validator, CTCSS Controller, DCS Controller, and a Phone Patch in a 1U size chassis. Internal hardware allows the unit to share a channel with both LTR and conventional users. Cross busy input can be used for additional flexibility.

Advanced Windows based program allows all parameters and audio levels to be programmed remotely using any IP Network.

A display function allows the user to remotely monitor the site showing realtime status information. Every single transaction on the controller is recorded for analysis and billing purposes.