diff --git a/conf/sip_profiles/internal.xml b/conf/sip_profiles/internal.xml
index 77f5444b79..319a4c5f81 100644
--- a/conf/sip_profiles/internal.xml
+++ b/conf/sip_profiles/internal.xml
@@ -146,11 +146,15 @@
     <!--
 	Choose the realm challenge key. Default is auto_to if not set. 
 	
-	auto_from - uses the from field as the value for the sip realm.
-	auto_to   - uses the to field as the value for the sip realm.
-	
+	auto_from  - uses the from field as the value for the sip realm.
+	auto_to    - uses the to field as the value for the sip realm.
+	<anyvalue> - you can input any value to use for the sip realm.
+
 	If you want URL dialing to work you'll want to set this to auto_from.
 	
+	If you use any other value besides auto_to or auto_from you'll loose
+	the ability to do multiple domains.
+	
 	Note: comment out to restore the behavior before 2008-09-29
 
     -->