diff --git a/CHANGELOG b/CHANGELOG
index 7f6e4b20..1e9d5045 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,12 @@
+Changes to version 1.3.1
+------------------------
+- IEC 61850 client: improved support for handling segmented reports
+- .NET API: Added some additional access function to ReportControlBlock
+- Java SCL parser: added support for timestamp values in "Val" elements
+- fixed bug in cmake file (winpcap support)
+- added C# example code for client side setting group handling
+- .NET API: added some additional wrapper code for MmsVariableSpecification functions
+
 Changes to version 1.3.0
 ------------------------
 - IEC 61850 server: more features configurable at runtime
@@ -17,7 +26,6 @@ Changes to version 1.3.0
 - MMS server: fixed bug in delete variable list service - scope of delete was not considered optional
 - some more small bug fixes and optimizations
 
-
 Changes to version 1.2.2
 ------------------------
 
diff --git a/dotnet/IEC61850forCSharp/Reporting.cs b/dotnet/IEC61850forCSharp/Reporting.cs
index 90ddba2d..398db95a 100644
--- a/dotnet/IEC61850forCSharp/Reporting.cs
+++ b/dotnet/IEC61850forCSharp/Reporting.cs
@@ -1,7 +1,7 @@
 /*
  *  Reporting.cs
  *
- *  Copyright 2014 Michael Zillgith
+ *  Copyright 2014-2018 Michael Zillgith
  *
  *  This file is part of libIEC61850.
  *
@@ -147,6 +147,15 @@ namespace IEC61850
             [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
             static extern IntPtr ClientReport_getDataReference(IntPtr self, int elementIndex);
 
+            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
+            static extern bool ClientReport_hasSubSeqNum(IntPtr self);
+
+            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
+            static extern UInt16 ClientReport_getSubSeqNum(IntPtr self);
+
+            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
+            static extern bool ClientReport_getMoreSeqmentsFollow(IntPtr self);
+
 			private IntPtr self;
 
 			private IntPtr dataSetValues = IntPtr.Zero;
@@ -213,16 +222,55 @@ namespace IEC61850
 				return ClientReport_getBufOvfl(self);
 			}
 
+            /// <summary>
+            /// Indicates if the report contains a sequence number (SeqNum) field
+            /// </summary>
+            /// <returns><c>true</c> if this instance has SeqNum; otherwise, <c>false</c>.</returns>
             public bool HasSeqNum ()
             {
                 return ClientReport_hasSeqNum(self);
             }
 
+            /// <summary>
+            /// Gets the value of the SeqNum field
+            /// </summary>
+            /// <returns>The report sequence number</returns>
             public UInt16 GetSeqNum ()
             {
                 return ClientReport_getSeqNum(self);
             }
 
+            /// <summary>
+            /// Indicates if the report contains a sub sequence number (SubSeqNum) and more segments follow (MoreSegmentsFollow) field
+            /// </summary>
+            /// <returns><c>true</c> if this instance has SubSeqNum and MoreSegmentsFollow; otherwise, <c>false</c>.</returns>
+            public bool HasSubSeqNum()
+            {
+                return ClientReport_hasSubSeqNum(self);
+            }
+
+            /// <summary>
+            /// Gets the sub sequence number (SubSeqNum) value of a segmented report
+            /// </summary>
+            /// <returns>The sub sequence number.</returns>
+            public UInt16 GetSubSeqNum()
+            {
+                return ClientReport_getSubSeqNum(self);
+            }
+
+            /// <summary>
+            /// Gets the more segments follow (MoreSegmentsFollow) flag
+            /// </summary>
+            /// <returns><c>true</c>, if more report segments follow, <c>false</c> otherwise.</returns>
+            public bool GetMoreSegmentsFollow()
+            {
+                return ClientReport_getMoreSeqmentsFollow(self);
+            }
+
+            /// <summary>
+            /// Determines whether this report contains reason for inclusion information
+            /// </summary>
+            /// <returns><c>true</c> if this report contains reason for inclusion information; otherwise, <c>false</c>.</returns>
             public bool HasReasonForInclusion ()
             {
                 return ClientReport_hasReasonForInclusion(self);
diff --git a/src/iec61850/client/client_report.c b/src/iec61850/client/client_report.c
index b2a76df9..26c670c4 100644
--- a/src/iec61850/client/client_report.c
+++ b/src/iec61850/client/client_report.c
@@ -3,7 +3,7 @@
  *
  *  Client implementation for IEC 61850 reporting.
  *
- *  Copyright 2013, 2014 Michael Zillgith
+ *  Copyright 2013-2018 Michael Zillgith
  *
  *  This file is part of libIEC61850.
  *
@@ -56,11 +56,15 @@ struct sClientReport
     bool hasConfRev;
     bool hasTimestamp;
     bool hasBufOverflow;
+    bool hasSubSequenceNumber;
 
     uint64_t timestamp;
     uint16_t seqNum;
     uint32_t confRev;
     bool bufOverflow;
+
+    uint16_t subSeqNum;
+    bool moreSegementsFollow;
 };
 
 char*
@@ -242,6 +246,24 @@ ClientReport_getDataSetValues(ClientReport self)
     return self->dataSetValues;
 }
 
+bool
+ClientReport_hasSubSeqNum(ClientReport self)
+{
+    return self->hasSubSequenceNumber;
+}
+
+uint16_t
+ClientReport_getSubSeqNum(ClientReport self)
+{
+    return self->subSeqNum;
+}
+
+bool
+ClientReport_getMoreSeqmentsFollow(ClientReport self)
+{
+    return self->moreSegementsFollow;
+}
+
 static ClientReport
 lookupReportHandler(IedConnection self, const char* rcbReference)
 {
@@ -386,6 +408,7 @@ iedConnection_handleReport(IedConnection self, MmsValue* value)
     matchingReport->hasConfRev = false;
     matchingReport->hasDataSetName = false;
     matchingReport->hasBufOverflow = false;
+    matchingReport->hasSubSequenceNumber = false;
 
    if (DEBUG_IED_CLIENT)
         printf("IED_CLIENT: received report with ID %s\n", MmsValue_toString(rptIdValue));
@@ -535,10 +558,43 @@ iedConnection_handleReport(IedConnection self, MmsValue* value)
         inclusionIndex++;
     }
 
+    /* handle segmentation fields (check ReportedOptFlds.segmentation) */
+    if (MmsValue_getBitStringBit(optFlds, 9) == true) {
+
+        MmsValue* subSeqNum = MmsValue_getElement(value, inclusionIndex);
+        inclusionIndex++;
+
+        if ((subSeqNum == NULL) || (MmsValue_getType(subSeqNum) != MMS_UNSIGNED)) {
+            if (DEBUG_IED_CLIENT)
+                printf("IED_CLIENT: received malformed report (SubSeqNum)\n");
+
+            goto exit_function;
+        }
+        else {
+            matchingReport->subSeqNum = (uint16_t) MmsValue_toUint32(subSeqNum);
+        }
+
+        MmsValue* moreSegmentsFollow = MmsValue_getElement(value, inclusionIndex);
+        inclusionIndex++;
+
+        if ((moreSegmentsFollow == NULL) || (MmsValue_getType(moreSegmentsFollow) != MMS_BOOLEAN)) {
+            if ((subSeqNum == NULL) || (MmsValue_getType(subSeqNum) != MMS_UNSIGNED)) {
+                if (DEBUG_IED_CLIENT)
+                    printf("IED_CLIENT: received malformed report (MoreSegmentsFollow)\n");
+
+                goto exit_function;
+            }
+        }
+        else {
+            matchingReport->moreSegementsFollow = MmsValue_getBoolean(moreSegmentsFollow);
+        }
 
-    /* skip segmentation fields */
-    if (MmsValue_getBitStringBit(optFlds, 9) == true)
-        inclusionIndex += 2;
+        matchingReport->hasSequenceNumber = true;
+    }
+    else {
+        matchingReport->subSeqNum = 0;
+        matchingReport->moreSegementsFollow = false;
+    }
 
     MmsValue* inclusion = MmsValue_getElement(value, inclusionIndex);
 
diff --git a/src/iec61850/inc/iec61850_client.h b/src/iec61850/inc/iec61850_client.h
index 594d97ee..549ef634 100644
--- a/src/iec61850/inc/iec61850_client.h
+++ b/src/iec61850/inc/iec61850_client.h
@@ -1336,6 +1336,42 @@ ClientReport_getDataReference(ClientReport self, int elementIndex);
 LIB61850_API uint64_t
 ClientReport_getTimestamp(ClientReport self);
 
+/**
+ * \brief indicates if the report contains a sub sequence number and a more segments follow flags (for segmented reporting)
+ *
+ * \param self the ClientReport instance
+ *
+ * \returns true if the report contains sub-sequence-number and more-follows-flag, false otherwise
+ */
+LIB61850_API bool
+ClientReport_hasSubSeqNum(ClientReport self);
+
+/**
+ * \brief get the sub sequence number of the report (for segmented reporting)
+ *
+ * Returns the sub sequence number of the report. This is 0 for the first report of a segmented report and
+ * will be increased by one for each report segment.
+ *
+ * \param self the ClientReport instance
+ *
+ * \return the sub sequence number of the last received report message.
+ */
+LIB61850_API uint16_t
+ClientReport_getSubSeqNum(ClientReport self);
+
+/**
+ * \brief get the more segments follow flag of the received report segment (for segmented reporting)
+ *
+ * Will return true in case this is part of a segmented report and more report segments will follow or false, if
+ * the current report is not a segmented report or is the last segment of a segmented report.
+ *
+ * \param self the ClientReport instance
+ *
+ * \return true when more segments of the current report will follow, false otherwise
+ */
+LIB61850_API bool
+ClientReport_getMoreSeqmentsFollow(ClientReport self);
+
 /**
  * \brief get the reason for inclusion of as a human readable string
  *