{
  services.getty.autologinUser = "root";

  services.asterisk = {
    enable = true;
    extraConfig = builtins.readFile ./asterisk/asterisk.conf;
    confFiles = builtins.listToAttrs (
      builtins.map (name: {
        name = name;
        value = builtins.readFile (./asterisk + "/${name}");
      }) (builtins.filter (n: n != "asterisk.conf") (builtins.attrNames (builtins.readDir ./asterisk)))
    );
  };

  virtualisation.forwardPorts = [
    {
      from = "host";
      host.port = 5060;
      guest.port = 5060;
    }
    {
      from = "host";
      host.port = 4569;
      guest.port = 4569;
    }
  ];

  networking.firewall = {
    allowedTCPPorts = [ 5060 ];
    allowedUDPPorts = [
      5060
      4569
    ];
  };

  boot.kernelParams = [ "console=ttyS0" ];
  
  system.stateVersion = "25.11";
}