diff --git a/conf/sofia.conf.xml b/conf/sofia.conf.xml
index 19a4672e6e..16e4853348 100644
--- a/conf/sofia.conf.xml
+++ b/conf/sofia.conf.xml
@@ -92,7 +92,7 @@
 	<!-- on authed calls, authenticate *all* the packets not just invite -->
 	<!-- <param name="auth-all-packets" value="true"/> -->
 
-	<param name="ext-rtp-ip" value="$${external_rtp_ip}"/>
+	<!-- <param name="ext-rtp-ip" value="$${external_rtp_ip}"/> -->
 	<!-- <param name="ext-sip-ip" value="$${external_sip_ip}"/> -->
 	<!-- rtp inactivity timeout -->
 	<!--<param name="rtp-timeout-sec" value="300"/>-->
@@ -105,5 +105,26 @@
 	<!--<param name="force-register-domain" value="cluecon.com"/>-->
       </settings>
     </profile>
+
+    <profile name="nat">
+      <settings>
+	<param name="debug" value="1"/>
+	<param name="rfc2833-pt" value="101"/>
+	<param name="sip-port" value="5061"/>
+	<param name="dialplan" value="XML,enum"/>
+	<param name="dtmf-duration" value="100"/>
+	<param name="codec-prefs" value="$${global_codec_prefs}"/>
+	<param name="use-rtp-timer" value="true"/>
+	<param name="rtp-timer-name" value="soft"/>
+	<param name="rtp-ip" value="$${local_ip_v4}"/>
+	<param name="sip-ip" value="$${local_ip_v4}"/>
+	<param name="manage-presence" value="true"/>
+	<param name="inbound-codec-negotiation" value="generous"/>
+	<param name="nonce-ttl" value="60"/>
+	<param name="auth-calls" value="true"/>
+	<param name="ext-rtp-ip" value="$${external_rtp_ip}"/>
+      </settings>
+    </profile>
+
   </profiles>
 </configuration>