limit outbound profile codecs to their own var.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7443 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/sip_profiles/nat.xml

@@ -12,7 +12,7 @@
     <param name="dialplan" value="XML"/>
     <param name="context" value="public"/>
     <param name="dtmf-duration" value="100"/>
-    <param name="codec-prefs" value="$${global_codec_prefs}"/>
+    <param name="codec-prefs" value="$${outbound_codec_prefs}"/>
     <param name="use-rtp-timer" value="true"/>
     <param name="hold-music" value="$${moh_uri}"/>
     <param name="rtp-timer-name" value="soft"/>

conf/sip_profiles/outbound.xml

@@ -17,7 +17,7 @@
     <param name="dialplan" value="XML"/>
     <param name="context" value="public"/>
     <param name="dtmf-duration" value="100"/>
-    <param name="codec-prefs" value="$${global_codec_prefs}"/>
+    <param name="codec-prefs" value="$${outbound_codec_prefs}"/>
     <param name="hold-music" value="$${moh_uri}"/>
     <param name="use-rtp-timer" value="true"/>
     <param name="rtp-timer-name" value="soft"/>

conf/vars.xml

@@ -17,6 +17,7 @@
        used by: dingaling.conf.xml enum.conf.xml 
   --> 
   <X-PRE-PROCESS cmd="set" data="global_codec_prefs=G722,PCMU@20i,PCMA@20i"/>
+  <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMU@20i,PCMA@20i"/>
   <X-PRE-PROCESS cmd="set" data="xmpp_client_profile=xmppc"/>
   <X-PRE-PROCESS cmd="set" data="xmpp_server_profile=xmpps"/>
   <!-- bind_server_ip