diff --git a/src/mms/inc/mms_device_model.h b/src/mms/inc/mms_device_model.h
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+/*
+ *  mms_model.h
+ *
+ *  Copyright 2013 Michael Zillgith
+ *
+ *	This file is part of libIEC61850.
+ *
+ *	libIEC61850 is free software: you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation, either version 3 of the License, or
+ *	(at your option) any later version.
+ *
+ *	libIEC61850 is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with libIEC61850.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *	See COPYING file for the complete license text.
+ */
+
+#ifndef MMS_DEVICE_MODEL_H_
+#define MMS_DEVICE_MODEL_H_
+
+#include "libiec61850_common_api.h"
+
+#include "mms_type_spec.h"
+#include "mms_common.h"
+#include "mms_named_variable_list.h"
+#include "logging_api.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    char* deviceName;
+
+    /* MMS VMD scope variables support */
+    int namedVariablesCount;
+    MmsVariableSpecification** namedVariables;
+
+    /* MMS VMD scope named variables list support */
+    LinkedList /*<MmsNamedVariableList>*/ namedVariableLists;
+
+    /* MMS domain support */
+    int domainCount;
+    MmsDomain** domains;
+} MmsDevice;
+
+
+struct sMmsJournal {
+    char* name;
+    LogStorage logStorage;
+};
+
+typedef struct sMmsJournal* MmsJournal;
+
+/*
+ * Server side data structure to hold information of an MMS domain (Logical Device)
+ */
+struct sMmsDomain {
+    char* domainName;
+    int namedVariablesCount;
+    MmsVariableSpecification** namedVariables;
+    LinkedList /*<MmsNamedVariableList>*/ namedVariableLists;
+    LinkedList /* <MmsJournal> */ journals;
+};
+
+/**
+ * @defgroup mms_server_api_group MMS server API (for IEC 61850 use IEC 61850 server API instead!)
+ *
+ * @{
+ */
+
+/**
+ * \brief Create a new MmsDomain instance
+ *
+ * This method should not be invoked by client code!
+ *
+ * \param domainName the name of the MMS domain
+ *
+ * \return the new MmsDomain instance
+ */
+MmsDomain*
+MmsDomain_create(char* domainName);
+
+char*
+MmsDomain_getName(MmsDomain* self);
+
+void
+MmsDomain_addJournal(MmsDomain* self, const char* name);
+
+MmsJournal
+MmsDomain_getJournal(MmsDomain* self, const char* name);
+
+/**
+ * Delete a MmsDomain instance
+ *
+ * This method should not be invoked by client code!
+ */
+void
+MmsDomain_destroy(MmsDomain* self);
+
+/**
+ * \brief Add a new MMS Named Variable List (Data set) to a MmsDomain instance
+ *
+ * The passed MmsNamedVariableList instance will be handled by the MmsDomain instance
+ * and will be destroyed if the MmsDomain_destroy function on this MmsDomain instance
+ * is called.
+ *
+ * \param self instance of MmsDomain to operate on
+ * \param variableList new named variable list that will be added to this MmsDomain
+ *
+ * \return true if operation was successful.
+ */
+bool
+MmsDomain_addNamedVariableList(MmsDomain* self, MmsNamedVariableList variableList);
+
+/**
+ * \brief Delete a MMS Named Variable List from this MmsDomain instance
+ *
+ * A call to this function will also destroy the MmsNamedVariableList instance.
+ *
+ * \param self instance of MmsDomain to operate on
+ * \param variableListName the name of the variable list to delete.
+ *
+ */
+void
+MmsDomain_deleteNamedVariableList(MmsDomain* self, char* variableListName);
+
+MmsNamedVariableList
+MmsDomain_getNamedVariableList(MmsDomain* self, const char* variableListName);
+
+LinkedList
+MmsDomain_getNamedVariableLists(MmsDomain* self);
+
+LinkedList
+MmsDomain_getNamedVariableListValues(MmsDomain* self, char* variableListName);
+
+LinkedList
+MmsDomain_createNamedVariableListValues(MmsDomain* self, char* variableListName);
+
+/**
+ * \brief Get the MmsTypeSpecification instance of a MMS named variable
+ *
+ * \param self instance of MmsDomain to operate on
+ * \param nameId name of the named variable
+ *
+ * \return MmsTypeSpecification instance of the named variable
+ */
+MmsVariableSpecification*
+MmsDomain_getNamedVariable(MmsDomain* self, char* nameId);
+
+/**
+ * \brief Create a new MmsDevice instance.
+ *
+ * MmsDevice objects are the root objects of the address space of an MMS server.
+ *
+ * An MmsDevice object can contain one or more MmsDomain instances.
+ *
+ * \param deviceName the name of the MMS device or NULL if the device has no name.
+ *
+ * \return the new MmsDevice instance
+ */
+MmsDevice*
+MmsDevice_create(char* deviceName);
+
+/**
+ * \brief Delete the MmsDevice instance
+ */
+void
+MmsDevice_destroy(MmsDevice* self);
+
+/**
+ * \brief Get the MmsDomain object with the specified MMS domain name.
+ *
+ * \param deviceName the name of the MMS device or NULL if the device has no name.
+ *
+ * \return the new MmsDevice instance
+ */
+MmsDomain*
+MmsDevice_getDomain(MmsDevice* self, char* domainId);
+
+/**
+ * \brief Get the MmsTypeSpecification instance of a MMS named variable of VMD scope
+ *
+ * \param self instance of MmsDevice to operate on
+ * \param variableName name of the named variable
+ *
+ * \return MmsTypeSpecification instance of the named variable
+ */
+MmsVariableSpecification*
+MmsDevice_getNamedVariable(MmsDevice* self, char* variableName);
+
+LinkedList
+MmsDevice_getNamedVariableLists(MmsDevice* self);
+
+MmsNamedVariableList
+MmsDevice_getNamedVariableListWithName(MmsDevice* self, const char* variableListName);
+
+MmsJournal
+MmsJournal_create(const char* name);
+
+void
+MmsJournal_destroy(MmsJournal self);
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MMS_DEVICE_MODEL_H_ */