[App_rpt-users] Command to execute external script?

Hello Everyone, Does anyone know how to use DTMF tones to run a command, to execute external script? -- Thanks, David "Laws that forbid the carrying of arms...disarm only those who are neither inclined nor determined to commit crimes. Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than prevent homicides, for an unarmed man may be attacked with greater confidence than an armed one." Thomas Jefferson