Hi, On 12/19/2012 05:49 PM, Mino Haluz wrote: > I know how to use sl_send_reply, but I would like to add "Reason:" > header to the reply generated. Is there any command or variable for that? You can use append_to_reply() from textops module: http://kamailio.org/docs/modules/1.3.x/textops.html#AEN276 Andreas