clarify the info as the word IP in the option isn't clearly saying you can put…

 clarify the info as the word IP in the option isn't clearly saying you can put an IP in the options value 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15302 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/sip_profiles/internal.xml

@@ -160,12 +160,16 @@
     <param name="inbound-reg-force-matching-username" value="true"/>
     <!-- on authed calls, authenticate *all* the packets not just invite -->
     <param name="auth-all-packets" value="false"/>
-    <!--
-	Possible options for ext-rtp-ip or ext-sip-ip 
-
-	auto     - Use guessed ip.
-	auto-nat - Use ip learned from NAT-PMP or UPNP
-    -->
+    
+    <!-- external_sip_ip
+      Used as the public IP address for SDP.
+      Can be an one of:
+           ip address            - "12.34.56.78"
+           a stun server lookup  - "stun:stun.server.com"
+           a DNS name            - "host:host.server.com"
+           auto                  - Use guessed ip.
+           auto-nat              - Use ip learned from NAT-PMP or UPNP
+       -->
     <param name="ext-rtp-ip" value="auto-nat"/>
     <param name="ext-sip-ip" value="auto-nat"/>