diff --git a/SDT/schema3.0/etc/domain.rnc b/SDT/schema3.0/etc/domain.rnc
index 6078e5fe75708aa628eea649c33c5d4b6b5930a8..0d15caae3f054c90abc3c81fe25a7697386d6769 100644
--- a/SDT/schema3.0/etc/domain.rnc
+++ b/SDT/schema3.0/etc/domain.rnc
@@ -8,7 +8,8 @@ Domain =
     #      This almost generates the correct schema ... but it
     #      doesn't have the correct schemaLocation
     # 
-    # <attribute ns="http://www.w3.org/XML/1998/namespace" name="base">		  <data type="anyURI"/>
+    # <attribute ns="http://www.w3.org/XML/1998/namespace" name="base">
+    #	<data type="anyURI"/>
     # </attribute>
     attribute xml:base { xsd:anyURI }?,
     attribute id { xsd:ID },
@@ -21,13 +22,13 @@ Domain =
       element Device {
         attribute id { xsd:Name },
         DocDef,
-        DeviceInfos?,
+        Characteristics?,
         Modules?,
         element SubDevices {
           element SubDevice {
             attribute id { xsd:Name },
             DocDef,
-            DeviceInfos?,
+            Characteristics?,
             Modules?
           }*
         }?
@@ -43,6 +44,16 @@ DeviceInfos =
       DataTypeDef
     }*
   }
+Characteristics =
+  element Characteristics {
+    element Characteristic {
+      attribute name { text },
+      attribute optional { xsd:boolean }?,
+      attribute value { text }?,
+      DocDef,
+      SimpleType
+    }+
+  }
 DataTypeDef =
   # Discuss: Doc on DataType?
   attribute unitOfMeasure { text }?,
@@ -61,7 +72,7 @@ SimpleType =
   element SimpleType {
     attribute name { text }?,
     attribute type { BasicType }
-    # TODO Constraints
+    #  TODO Constraints Perhaps directly in DataTypeDef
     
   }
 BasicType =
@@ -100,6 +111,7 @@ ModuleDef =
     attribute class { text }
   }?,
   DocDef,
+  Characteristics?,
   Actions?,
   Data?,
   Events?
diff --git a/SDT/schema3.0/src/domain.rng b/SDT/schema3.0/src/domain.rng
index 739af2ecab35c6b5d24d7c31bc673b26a0b5dd85..72393588822159b95ae31c6cb9fbe747404a3b9c 100644
--- a/SDT/schema3.0/src/domain.rng
+++ b/SDT/schema3.0/src/domain.rng
@@ -17,7 +17,8 @@
 	     This almost generates the correct schema ... but it
 	     doesn't have the correct schemaLocation
 
-	<attribute ns="http://www.w3.org/XML/1998/namespace" name="base">		  <data type="anyURI"/>
+	<attribute ns="http://www.w3.org/XML/1998/namespace" name="base">
+		<data type="anyURI"/>
 	</attribute>
 	-->
 
@@ -54,7 +55,7 @@
 							</attribute>
 							<ref name="DocDef"/>
 							<optional>
-								<ref name="DeviceInfos"/>
+								<ref name="Characteristics"/>
 							</optional>
 							<optional>
 								<ref name="Modules"/>
@@ -68,7 +69,7 @@
 											</attribute>
 											<ref name="DocDef"/>
 											<optional>
-												<ref name="DeviceInfos"/>
+												<ref name="Characteristics"/>
 											</optional>
 											<optional>
 												<ref name="Modules"/>
@@ -105,6 +106,32 @@
 	</define>
 
 
+	<define name="Characteristics">
+		<element name="Characteristics">
+			<oneOrMore>
+				<element name="Characteristic">
+					<attribute name="name">
+						<text/>
+					</attribute>
+					<optional>
+						<attribute name="optional">
+							<data type="boolean"/>
+						</attribute>
+					</optional>
+					<optional>
+						<attribute name="value">
+							<text/>
+						</attribute>
+					</optional>
+
+					<ref name="DocDef"/>
+					<ref name="SimpleType" />
+				</element>
+			</oneOrMore>
+		</element>
+	</define>
+
+
 	<define name="DataTypeDef">
 		<!-- Discuss: Doc on DataType? -->
 		<optional>
@@ -156,7 +183,7 @@
 			<attribute name="type">
 				<ref name="BasicType" />
 			</attribute>
-			<!-- TODO Constraints -->
+			<!-- TODO Constraints Perhaps directly in DataTypeDef-->
 		</element>
 	</define>
 
@@ -240,6 +267,9 @@
 			</element>
 		</optional>
 		<ref name="DocDef"/>
+		<optional>
+			<ref name="Characteristics"/>
+		</optional>
 		<optional>
 			<ref name="Actions"/>
 		</optional>
diff --git a/SDT/schema3.0/src/domain.xsd b/SDT/schema3.0/src/domain.xsd
index cf044638888f11236effc2f5505868cfd28854aa..01e69d3a96d3869b349be8a3f98d18c717a8ceb4 100644
--- a/SDT/schema3.0/src/domain.xsd
+++ b/SDT/schema3.0/src/domain.xsd
@@ -42,7 +42,7 @@
     <xs:complexType>
       <xs:sequence>
         <xs:group ref="DocDef"/>
-        <xs:element minOccurs="0" ref="DeviceInfos"/>
+        <xs:element minOccurs="0" ref="Characteristics"/>
         <xs:element minOccurs="0" ref="Modules"/>
         <xs:element minOccurs="0" ref="SubDevices"/>
       </xs:sequence>
@@ -60,7 +60,7 @@
     <xs:complexType>
       <xs:sequence>
         <xs:group ref="DocDef"/>
-        <xs:element minOccurs="0" ref="DeviceInfos"/>
+        <xs:element minOccurs="0" ref="Characteristics"/>
         <xs:element minOccurs="0" ref="Modules"/>
       </xs:sequence>
       <xs:attribute name="id" use="required" type="xs:Name"/>
@@ -84,6 +84,24 @@
       <xs:attributeGroup ref="DataTypeDef"/>
     </xs:complexType>
   </xs:element>
+  <xs:element name="Characteristics">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element maxOccurs="unbounded" ref="Characteristic"/>
+      </xs:sequence>
+    </xs:complexType>
+  </xs:element>
+  <xs:element name="Characteristic">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:group ref="DocDef"/>
+        <xs:element ref="SimpleType"/>
+      </xs:sequence>
+      <xs:attribute name="name" use="required"/>
+      <xs:attribute name="optional" type="xs:boolean"/>
+      <xs:attribute name="value"/>
+    </xs:complexType>
+  </xs:element>
   <xs:element name="DataTypeDef" abstract="true"/>
   <xs:attributeGroup name="DataTypeDef">
     <xs:attribute name="unitOfMeasure"/>
@@ -175,6 +193,7 @@
     <xs:sequence>
       <xs:element minOccurs="0" ref="extends"/>
       <xs:group ref="DocDef"/>
+      <xs:element minOccurs="0" ref="Characteristics"/>
       <xs:element minOccurs="0" ref="Actions"/>
       <xs:element minOccurs="0" ref="Data"/>
       <xs:element minOccurs="0" ref="Events"/>
diff --git a/SDT/schema3.0/test/dal-eg.xml b/SDT/schema3.0/test/dal-eg.xml
index fe3b9a52bb1d3853b4b169b4c3e74da8007573ea..b3404020f27d40131c71981fc12e2e09e1ad4fae 100644
--- a/SDT/schema3.0/test/dal-eg.xml
+++ b/SDT/schema3.0/test/dal-eg.xml
@@ -22,18 +22,18 @@
 	<tt>on</tt> and <tt>off</tt>. This is clearly a candidate for the 
 	module class <tt>BooleanState</tt>.
       </Doc>
-      <DeviceInfos>
-      	<DeviceInfo name="Name">
+      <Characteristics>
+      	<Characteristic name="Name">
 		  <Doc>Original value: PowerSwitch</Doc>
 		  <SimpleType type="string" />
-		</DeviceInfo>
+		</Characteristic>
 
 		<!-- The Vendor field should probably be part of the domain -->
-      	<DeviceInfo name="Vendor">
+      	<Characteristic name="Vendor">
       	  <Doc>Original value: Telekom Innovation Laboratories</Doc>
 		  <SimpleType type="string" />
-		</DeviceInfo>
-      </DeviceInfos>
+		</Characteristic>
+      </Characteristics>
 
       <Modules>
 	<Module name="proprietaryPower">
diff --git a/SDT/schema3.0/test/mseeb.xml b/SDT/schema3.0/test/mseeb.xml
index 8402b934de6a0e79cd62429ca49a5b02d6ddc2c2..180c0fa31b910cb54b04a7743795ce1ca46988f4 100644
--- a/SDT/schema3.0/test/mseeb.xml
+++ b/SDT/schema3.0/test/mseeb.xml
@@ -100,7 +100,7 @@
           <Events>
                 <Event name="stateChanged" optional="true">
                     <Data>
-                        <DataPoint name="state" optional="true">
+                        <DataPoint name="state" readable="true">
                     		<SimpleType type="boolean" />
                         </DataPoint>
                     </Data>
@@ -119,28 +119,28 @@
             <Doc>
                 This device is intended as a demonstration of how to define a Root Device with multiple sub-devices.
             </Doc>
-            <DeviceInfos>
-                <DeviceInfo name="Name">
+            <Characteristics>
+                <Characteristic name="Name">
                     <Doc>Original value: Multi Socket Electrical-Extension-Block</Doc>
                     <SimpleType type="string" />
-                </DeviceInfo>
-                <DeviceInfo name="Vendor">
+                </Characteristic>
+                <Characteristic name="Vendor">
                     <Doc>Original value: HGI</Doc>
                     <SimpleType type="string" />
-                </DeviceInfo>
-                <DeviceInfo name="FirmwareVersion">
+                </Characteristic>
+                <Characteristic name="FirmwareVersion">
                   <Doc>Original value: 1.0</Doc>
                   <SimpleType type="string" />
-                </DeviceInfo>
-                <DeviceInfo name="VendorURL">
+                </Characteristic>
+                <Characteristic name="VendorURL">
                   <Doc>Original value: http://www.homegatewayinitative.org</Doc>
                   <SimpleType type="uri" />
-                </DeviceInfo>
-                <DeviceInfo name="SerialNumber">
+                </Characteristic>
+                <Characteristic name="SerialNumber">
                   <Doc>Original value: 1234.5</Doc>
                   <SimpleType type="string" />
-                </DeviceInfo>
-            </DeviceInfos>
+                </Characteristic>
+            </Characteristics>
 
 <!-- These are the modules for the device:
     - Switch on/off all contained switches. It inherits from hgi.dal.core.BooleanState.
@@ -154,6 +154,12 @@
                         The proprietry interface for turning all switches of the extension block on and off. 
                         The action "BooleanState:get" returns "true" when any of the sub-devices is in the state "on", otherwise it returns "false".
                     </Doc>
+                    <Characteristics>
+                        <Characteristic name="version" value="1.0.0">
+                            <Doc>Version for this ModuleClass</Doc>
+                            <SimpleType type="string" />
+                        </Characteristic>
+                    </Characteristics>
                 </Module>
                 <Module name="power">
                     <Actions>
@@ -172,9 +178,17 @@
                 </Module>
 
                 <Module name="extensionBlockDataPoints">
+                    <Actions>
+                        <Action name="getNames">
+                            <Array name="names">
+                                <SimpleType type="string" />
+                            </Array>
+                        </Action>
+                    </Actions>
                     <Data>
                         <DataPoint  name="firmwareVersion" 
-                                    writable="false">
+                                    writable="false"
+                                    readable="true">
                             <Doc>
                                 This datapoint represents the firmware version of the extension block.
                             </Doc>
@@ -182,7 +196,8 @@
                         </DataPoint>
                         
                         <DataPoint  name="powerSwitchNames"
-                                    writable="false">
+                                    writable="false"
+                                    readable="true">
                             <Doc>
                                 This datapoint is an array of strings with the names of the contained devices.
                             </Doc>
@@ -205,16 +220,16 @@
                     <Doc>
                         This sub device is intended as a demonstration of how to use the abstract modules defined in the <em>HGI Core</em> domain.
                     </Doc>
-                    <DeviceInfos>
-                        <DeviceInfo name="Name">
+                    <Characteristics>
+                        <Characteristic name="Name">
                             <Doc>Original value: PowerSwitch 1</Doc>
                             <SimpleType type="string" />
-                        </DeviceInfo>
-                        <DeviceInfo name="Vendor">
+                        </Characteristic>
+                        <Characteristic name="Vendor">
                             <Doc>Original value: HGI</Doc>
                             <SimpleType type="string" />
-                        </DeviceInfo>
-                    </DeviceInfos>
+                        </Characteristic>
+                    </Characteristics>
                     <Modules>
                         <Module name="power">
                             <extends domain="hgi.dal.core" class="BooleanState"/>
@@ -228,16 +243,23 @@
                     <Doc>
                         This sub device is intended as a demonstration of how to use the abstract modules defined in the <em>HGI Core</em> domain.
                     </Doc>
-                    <DeviceInfos>
-                        <DeviceInfo name="Name">
+                    <Characteristics>
+                        <Characteristic name="Name">
                             <Doc>Original value: PowerSwitch 2</Doc>
                             <SimpleType type="string" />
-                        </DeviceInfo>
-                        <DeviceInfo name="Vendor">
+                        </Characteristic>
+                        <Characteristic name="Vendor">
                             <Doc>Original value: HGI</Doc>
                             <SimpleType type="string" />
-                        </DeviceInfo>
-                    </DeviceInfos>
+                        </Characteristic>
+                        <Characteristic name="VendorURL" value="http://homegatwaysinitiative.org">
+                            <Doc>Original value: http://homegatwaysinitiative.org</Doc>
+                            <SimpleType type="uri" />
+                        </Characteristic>
+                        <Characteristic name="maximumAltitude" value="2800">
+                            <SimpleType type="integer" />
+                        </Characteristic>
+                    </Characteristics>
                     <Modules>
                         <Module name="power">
                             <extends domain="hgi.dal.core" class="BooleanState"/>