default config tweak

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13620 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/directory/default/example.com.xml

@@ -14,7 +14,7 @@
 	<param name="register" value="$${default_provider_register}"/>
 	<param name="retry-seconds" value="30"/>
 	<param name="extension" value="$${default_provider_contact}"/>
-	<param name="contact-params" value="domain_name=$${domain}"/>
+	<!--<param name="contact-params" value="domain_name=$${domain}"/>-->
 	<param name="context" value="public"/>
       </gateway>
     </gateways>