--- a/phoneengine/engineinfo/inc/cpeengineinfoimpl.h	Mon Jan 18 20:18:27 2010 +0200
+++ b/phoneengine/engineinfo/inc/cpeengineinfoimpl.h	Tue Jan 26 11:57:27 2010 +0200
@@ -1258,7 +1258,7 @@
         * @param aCallId, is the call identification number.
         */
         void SetRemoteColpNumber(
-            TPEPhoneNumber& aColpNumber, 
+            const TPEPhoneNumber& aColpNumber, 
             const TInt aCallId );
 
         /**