topos: docs - more explicit info about required use of record_route()

src/modules/topos/doc/topos_admin.xml

@@ -26,7 +26,10 @@
 		loaded (tune the parameters if needed).
 	</para>
 	<para>
-		It works for SIP MESSAGE requests.
+		It also works for SIP MESSAGE or other requests that do not create
+		a call dialog -- record_route() must be used for them as well, the
+		headers are not going to be in the messages sent to the network, they
+		are needed to know local addresses used to communicate with each side.
 	</para>
 	</section>
 	<section>
@@ -39,7 +42,8 @@
 			<listitem>
 			<para>
 				<emphasis>rr module</emphasis> - server must perform record
-				routing to ensure in-dialog requests are encoded/decoded.
+				routing to ensure in-dialog requests are encoded/decoded (it
+				must be done for all initial requests).
 			</para>
 			</listitem>
 			<listitem>