diff -r 60e492b28869 -r a36789189b53 mmserv/voipaudioservices/VoIPIntfc/src/VoIPUtilityFactoryImpl.cpp
--- a/mmserv/voipaudioservices/VoIPIntfc/src/VoIPUtilityFactoryImpl.cpp	Thu Jul 15 19:13:36 2010 +0300
+++ b/mmserv/voipaudioservices/VoIPIntfc/src/VoIPUtilityFactoryImpl.cpp	Thu Aug 19 10:26:11 2010 +0300
@@ -71,7 +71,7 @@
     // deny access to audio resources.
     iPriorityDn.iPref = KAudioPrefVoipAudioDownlink;
     iPriorityDn.iPriority = KAudioPriorityVoipAudioDownlink;
-    iPriorityUp.iPref = KAudioPrefVoipAudioUplink;
+    iPriorityUp.iPref = KAudioPrefVoipAudioUplinkNonSignal; //for DTMF mixing
     iPriorityUp.iPriority = KAudioPriorityVoipAudioUplink;
     }