Hello :
 
Under sip_profiles  directory these files "internal.xml , external.xml , nat.xml"
all have a setting  
==> <param name="context" value="public"/>
 
Does the "public context"  relate to the dialplan directory "public.xml" file ?
 
if do , I can route to another dialplan file under some condition, do I ?
 
" <extension name="public_extensions">
      <condition field="destination_number" expression="^(10[01][0-9])$">
        <action application="transfer" data="$1 XML my-default"/>
" ;                                                                      ^^^^^^^^^^^^^^^
 
if not , what should I do ?
 
ps: Brian, thanks your effort here.