diff --git a/src/iec61850/inc_private/reporting.h b/src/iec61850/inc_private/reporting.h
index a5a00c30..05be87c6 100644
--- a/src/iec61850/inc_private/reporting.h
+++ b/src/iec61850/inc_private/reporting.h
@@ -106,6 +106,8 @@ typedef struct {
     ReportBuffer* reportBuffer;
     MmsValue* timeOfEntry;
 
+    ReportControlBlock* rcb;
+
     IedServer server;
 } ReportControl;
 
diff --git a/src/iec61850/server/mms_mapping/reporting.c b/src/iec61850/server/mms_mapping/reporting.c
index 97e7dfef..da8798b5 100644
--- a/src/iec61850/server/mms_mapping/reporting.c
+++ b/src/iec61850/server/mms_mapping/reporting.c
@@ -40,7 +40,7 @@
 #include <string.h>
 
 /* if not explicitly set by client "ResvTms" will be set to this value */
-#define RESV_TMS_IMPLICIT_VALUE 30
+#define RESV_TMS_IMPLICIT_VALUE 10
 
 #ifndef DEBUG_IED_SERVER
 #define DEBUG_IED_SERVER 0
@@ -1061,6 +1061,8 @@ Reporting_createMmsBufferedRCBs(MmsMapping* self, MmsDomain* domain,
         rc->name = StringUtils_createString(3, logicalNode->name, "$BR$",
                 reportControlBlock->name);
 
+        rc->rcb = reportControlBlock;
+
         namedVariable->typeSpec.structure.elements[currentReport] =
                 createBufferedReportControlBlock(reportControlBlock, rc, self);
 
@@ -1101,6 +1103,8 @@ Reporting_createMmsUnbufferedRCBs(MmsMapping* self, MmsDomain* domain,
         rc->name = StringUtils_createString(3, logicalNode->name, "$RP$",
                 reportControlBlock->name);
 
+        rc->rcb = reportControlBlock;
+
         namedVariable->typeSpec.structure.elements[currentReport] =
                 createUnbufferedReportControlBlock(reportControlBlock, rc);
 
@@ -1188,8 +1192,19 @@ updateOwner(ReportControl* rc, MmsServerConnection connection)
                 }
             }
             else {
-                uint8_t emptyAddr[1];
-                MmsValue_setOctetString(owner, emptyAddr, 0);
+                if (rc->resvTms != -1) {
+                    uint8_t emptyAddr[1];
+                    MmsValue_setOctetString(owner, emptyAddr, 0);
+                }
+                else {
+                    /* Set to pre-configured owner */
+                    if (rc->rcb->clientReservation[0] == 4) {
+                        MmsValue_setOctetString(owner, rc->rcb->clientReservation + 1, 4);
+                    }
+                    else if (rc->rcb->clientReservation[0] == 6) {
+                        MmsValue_setOctetString(owner, rc->rcb->clientReservation + 1, 16);
+                    }
+                }
             }
         }
     }
@@ -1253,9 +1268,14 @@ static void
 checkReservationTimeout(ReportControl* rc)
 {
     if (rc->enabled == false) {
-        if (rc->resvTms > 0) {
+        if (rc->reservationTimeout > 0) {
             if (Hal_getTimeInMs() > rc->reservationTimeout) {
-                rc->resvTms = 0;
+
+                if (rc->resvTms != -1)
+                    rc->resvTms = 0;
+
+                if (DEBUG_IED_SERVER)
+                    printf("IED_SERVER: reservation timeout expired for %s.%s\n", rc->parentLN->name, rc->name);
 
 #if (CONFIG_IEC61850_BRCB_WITH_RESVTMS == 1)
                 MmsValue* resvTmsVal = ReportControl_getRCBValue(rc, "ResvTms");
@@ -1401,8 +1421,7 @@ Reporting_RCBWriteAccessHandler(MmsMapping* self, ReportControl* rc, char* eleme
 
             if (updateReportDataset(self, rc, NULL, connection)) {
 
-                if (rc->resvTms != -1)
-                    updateOwner(rc, connection);
+                updateOwner(rc, connection);
 
                 MmsValue* rptEna = ReportControl_getRCBValue(rc, "RptEna");
 
@@ -1703,6 +1722,9 @@ exit_function:
 
             reserveRcb(rc, connection);
         }
+        else if (rc->resvTms == -1) {
+            reserveRcb(rc, connection);
+        }
     }
 
     ReportControl_unlockNotify(rc);