diff -r 000000000000 -r dfb7c4ff071f commsfwsupport/commselements/nodemessages/inc/nm_signals.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/commsfwsupport/commselements/nodemessages/inc/nm_signals.h	Thu Dec 17 09:22:25 2009 +0200
@@ -0,0 +1,67 @@
+// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+/**
+ @file 
+ @internalTechnology
+*/
+
+#ifndef SYMBIAN_NM_SIGNALS_H
+#define SYMBIAN_NM_SIGNALS_H
+
+#include <elements/h_structures.h>
+#include <elements/metavirtctor.h>
+#include <elements/nm_common.h>
+
+namespace Messages
+{
+
+class TRuntimeCtxId;
+
+//-=========================================================
+//
+// TSignalBase
+//
+//-=========================================================
+class TSignalBase : public Meta::SMetaDataNetCtor
+	{
+public:
+	/** The space required for reconstructing the message object from the stored data.
+	This value is not directly related to the maximum length of a message supported
+	by the currently used transport implementation.
+	*/
+	enum { KMaxInlineMessageSize = 224 }; //KMaxInlineMessageSize + KMaxUnstoredOverhead == 256 (currently used transport supports ~150)
+
+	/** The space required for reconstructing the object from the stored data will always be somewhat larger than that data, due
+	to the vtbl pointer, iSender, and most variably the overhead for member objects such as descriptors. This value is allows for
+	several descriptors in a maximally-sized (non-blob) message without being lavish - in general derived classes shouldn't have
+	unserialised members.
+	*/
+	enum { KMaxUnstoredOverhead = 32 };
+
+public:
+	virtual void DispatchL(const TRuntimeCtxId& aSender, const TRuntimeCtxId& aRecipient) = 0;
+	virtual void Error(const TRuntimeCtxId& aSender, const TRuntimeCtxId& aRecipient, TInt aError) = 0;
+
+public:
+	EXPORT_DATA_VTABLE_AND_FN
+	};
+
+} //namespace Messages
+
+
+#endif
+	//SYMBIAN_NM_SIGNALS_H
+