HT is a free internet intercom software.
At the same time it supports network intercom and radio intercom real-time forwarding.
The main function:
1The network intercom (using mobile phone network transmission)
        User-built group realizes multi-person intercom
        Optional location sharing to keep track of teammate locations
        Support wireless PTT and hand microphone to achieve black screen intercom
2 The radio intercom
        Save chat history
        Send and receive pictures via SSTV
        Send location reports and text messages via BSS signaling
        Send and parse the Moss code
        Send and parse DTMF
        Optional location sharing via APRSBSS format
3 APRS
        Communicate with radio enthusiasts around the world via APRS
        After connecting the device it can be used as IGage to transfer APRS data packets between the Internet and the radio.
        Use an audio cable to let your regular walkie-talkie support APRS
5 Network intercom and traditional analog intercom fusion
        Supports network-to-radio radio-to-network real-time forwarding for cross-regional radio convergence.