This is a script for FivePD, a police modification for FiveM.
You can find the download here: https://gtapolicemods.com/files/file/895-fivepd-audio-dispatch-audio/
GPM unfortunately shut down. Latest version is available under "Releases", but without the copyrighted audio files.
Feel free to create a pull request.
Sorry for the mess :) The code and branches requires a little cleanup. I'll get to it ...