Current proven working config: <wap-provisioningdoc>

 <characteristic type="VoIP">
   <parm name="SIPSettings"
      value="&lt;provision key='1032ab01' name='Sihnon'&gt;
            &lt;provider name='Sihnon' /&gt; 
            &lt;user account='andrew' password='---my-password---'
                uri='sip:andrew'
                allowedauth='digest'/&gt; 
            &lt;sipsrv addr='santo.sihnon.net' protocol='UDP' role='proxy'&gt;
               &lt;session party='First' type='pc2pc' /&gt; 
               &lt;session party='First' type='pc2ph' /&gt; 
            &lt;/sipsrv&gt;
            &lt;sipsrv addr='santo.sihnon.net' protocol='UDP' role='registrar'/&gt; 
         &lt;/provision&gt;" />
 </characteristic>

</wap-provisioningdoc>

This needs to be inside a file named _setup.xml, then packaged in a cab (

cabarc N voipsettings.cab _setup.xml

).

The default Windows\ipdialplan.xml file works fine if all you want to do is call certain SIP numbers by prefixing them with “SIP:” in your contact list, e.g. “SIP: 123@santo.sihnon.net”.