Encrypt analog voice directly a using raspberry pi3

No JB, Do not install APP, No Internet Connection Analog Voice Encryption Encrypting voice of mobile calls (GSM, CDMA, LTE, APP ... calls) directly. Encrypt voice contents before sending into cell phone. Prevent intercept at phone, base station and Telecom server site. Analog encryption guard against crack and hack. Secure your voice contents extremely. No APP Installation No Server involvement project doesn’t need internet connection. project communicate through voice channel. Won’t save or transfer log/key by 3rd party. Less exposure and higher security. Provide unlimited encrypted phone call minutes. No licenese limitation. Secure phone call forever.