The TrembSAT Push To Talk system is an IP-based radio communications device that supports Satellite, 3G, LTE, and LAN backhaul and Land Mobile Radio Integration to provide seamless voice communication in any situation. Cost effective, it is designed to expand and augment traditional LMR systems widely used in the Transportation, Mining, Oil & Gas, and Rail industries.
The user interface of the PTT box is simple to use with only a dial-button, a few LEDs and a combined volume control/on-off button. Once the user presses the dial-button a VoIP connection is established between the PTT box and the dispatcher. When the dispatcher answers the call, a simplex communication channel is available. In the same way the dispatcher may call the mobile unit; to answer the call the mobile user simply presses the dial button.