Hi There is a wiki on the web which describes how to use a Grandstream FXO device with freesiwtch and recommends the following settings. How big a security hole is this creating and is there a better way to do this? Also, what would the syntax be for the "Add ip=" recommendation? *add file conf/directory/default/pstn.xml containing* <include> <!-- Add ip= to constrain to specific IP address for a little extra security --> <user id="Anonymous"/> </include> *change following in conf/sip_profiles/internal.xml* <param name="accept-blind-reg" value="true"/> <param name="accept-blind-auth" value="true"/> Thanks advance O