diff --git a/data/tariffplans/tutorial/Thresholds.csv b/data/tariffplans/tutorial/Thresholds.csv
index d6916857f..9030766b3 100644
--- a/data/tariffplans/tutorial/Thresholds.csv
+++ b/data/tariffplans/tutorial/Thresholds.csv
@@ -1,2 +1,3 @@
+
 #Tenant[0],Id[1],FilterType[2],FilterFieldName[3],FilterFieldValues[4],ActivationInterval[5],MinItems[6],Recurrent[7],MinSleep[8],Blocker[9],Stored[10],Weight[11],ActionIDs[12]
-Threshold1,*string,Account,1001;1002,2014-07-29T15:00:00Z,,1.2,10,true,1s,true,true,10,THRESH1;THRESH2
\ No newline at end of file
+Threshold1,*string,Account,1001;1002,2014-07-29T15:00:00Z,,1.2,10,true,1s,true,true,10,THRESH1;THRESH2
diff --git a/engine/libstats.go b/engine/libstats.go
index fbef8395f..bd61ab64c 100755
--- a/engine/libstats.go
+++ b/engine/libstats.go
@@ -128,6 +128,22 @@ func (se StatEvent) Pdd(timezone string) (pdd time.Duration, err error) {
 	return utils.ParseDurationWithSecs(pddStr)
 }
 
+// Destination returns the Destination of StatEvent
+func (se StatEvent) Destination(timezone string) (ddc string, err error) {
+	ddcIf, has := se.Fields[utils.DESTINATION]
+	if !has {
+		return ddc, utils.ErrNotFound
+	}
+	if ddcInt, canCast := ddcIf.(int64); canCast {
+		return strconv.FormatInt(ddcInt, 64), nil
+	}
+	ddcStr, canCast := ddcIf.(string)
+	if !canCast {
+		return ddc, errors.New("cannot cast to string")
+	}
+	return ddcStr, nil
+}
+
 // NewStoredStatQueue initiates a StoredStatQueue out of StatQueue
 func NewStoredStatQueue(sq *StatQueue, ms Marshaler) (sSQ *StoredStatQueue, err error) {
 	sSQ = &StoredStatQueue{
diff --git a/engine/statmetrics.go b/engine/statmetrics.go
index 1f9b6440d..93990488b 100644
--- a/engine/statmetrics.go
+++ b/engine/statmetrics.go
@@ -36,6 +36,7 @@ func NewStatMetric(metricID string) (sm StatMetric, err error) {
 		utils.MetaACC: NewACC,
 		utils.MetaTCC: NewTCC,
 		utils.MetaPDD: NewPDD,
+		utils.MetaDDC: NewDCC,
 	}
 	if _, has := metrics[metricID]; !has {
 		return nil, fmt.Errorf("unsupported metric: %s", metricID)
@@ -549,3 +550,72 @@ func (pdd *StatPDD) Marshal(ms Marshaler) (marshaled []byte, err error) {
 func (pdd *StatPDD) LoadMarshaled(ms Marshaler, marshaled []byte) (err error) {
 	return ms.Unmarshal(marshaled, pdd)
 }
+
+func NewDCC() (StatMetric, error) {
+	return &StatDDC{Destinations: make(map[string]utils.StringMap), EventDestinations: make(map[string]string)}, nil
+}
+
+type StatDDC struct {
+	Destinations      map[string]utils.StringMap
+	EventDestinations map[string]string // map[EventTenantID]Destination
+}
+
+func (ddc *StatDDC) GetStringValue(fmtOpts string) (val string) {
+	if len(ddc.Destinations) == 0 {
+		return utils.NOT_AVAILABLE
+	}
+	return fmt.Sprintf("%+v", len(ddc.Destinations))
+}
+
+func (ddc *StatDDC) GetValue() (v interface{}) {
+	return len(ddc.Destinations)
+}
+
+func (ddc *StatDDC) GetFloat64Value() (v float64) {
+	if len(ddc.Destinations) == 0 {
+		return -1.0
+	}
+	return float64(len(ddc.Destinations))
+}
+
+func (ddc *StatDDC) AddEvent(ev *StatEvent) (err error) {
+	var dest string
+	if at, err := ev.AnswerTime(config.CgrConfig().DefaultTimezone); err != nil &&
+		err != utils.ErrNotFound {
+		return err
+	} else if !at.IsZero() {
+		if destination, err := ev.Destination(config.CgrConfig().DefaultTimezone); err != nil {
+			return err
+		} else {
+			dest = destination
+			if _, has := ddc.Destinations[dest]; !has {
+				ddc.Destinations[dest] = make(map[string]bool)
+			}
+			ddc.Destinations[dest][ev.TenantID()] = true
+		}
+	}
+	ddc.EventDestinations[ev.TenantID()] = dest
+	return
+}
+
+func (ddc *StatDDC) RemEvent(evTenantID string) (err error) {
+	destination, has := ddc.EventDestinations[evTenantID]
+	if !has {
+		return utils.ErrNotFound
+	}
+	if len(ddc.Destinations[destination]) == 1 {
+		delete(ddc.Destinations, destination)
+	} else {
+		delete(ddc.Destinations[destination], evTenantID)
+	}
+
+	delete(ddc.EventDestinations, evTenantID)
+	return
+}
+
+func (ddc *StatDDC) Marshal(ms Marshaler) (marshaled []byte, err error) {
+	return ms.Marshal(DDC)
+}
+func (ddc *StatDDC) LoadMarshaled(ms Marshaler, marshaled []byte) (err error) {
+	return ms.Unmarshal(marshaled, ddc)
+}
diff --git a/engine/statmetrics_test.go b/engine/statmetrics_test.go
index 8e96c4c0f..88bdb9896 100644
--- a/engine/statmetrics_test.go
+++ b/engine/statmetrics_test.go
@@ -832,3 +832,103 @@ func TestPDDGetValue(t *testing.T) {
 		t.Errorf("wrong pdd value: %+v", v)
 	}
 }
+
+func TestDDCGetStringValue(t *testing.T) {
+	ddc, _ := NewDCC()
+	ev := &StatEvent{Tenant: "cgrates.org", ID: "EVENT_1",
+		Fields: map[string]interface{}{
+			"AnswerTime":      time.Date(2014, 7, 14, 14, 25, 0, 0, time.UTC),
+			utils.DESTINATION: "1002"}}
+	if strVal := ddc.GetStringValue(""); strVal != utils.NOT_AVAILABLE {
+		t.Errorf("wrong ddc value: %s", strVal)
+	}
+
+	ddc.AddEvent(ev)
+	if strVal := ddc.GetStringValue(""); strVal != "1" {
+		t.Errorf("wrong ddc value: %s", strVal)
+	}
+	ev2 := &StatEvent{Tenant: "cgrates.org", ID: "EVENT_2",
+		Fields: map[string]interface{}{
+			"AnswerTime":      time.Date(2014, 7, 14, 14, 25, 0, 0, time.UTC),
+			utils.DESTINATION: "1002"}}
+
+	ev3 := &StatEvent{Tenant: "cgrates.org", ID: "EVENT_3",
+		Fields: map[string]interface{}{
+			"AnswerTime":      time.Date(2014, 7, 14, 14, 25, 0, 0, time.UTC),
+			utils.DESTINATION: "1001"}}
+	ddc.AddEvent(ev2)
+	ddc.AddEvent(ev3)
+	if strVal := ddc.GetStringValue(""); strVal != "2" {
+		t.Errorf("wrong ddc value: %s", strVal)
+	}
+	ddc.RemEvent(ev.TenantID())
+	if strVal := ddc.GetStringValue(""); strVal != "2" {
+		t.Errorf("wrong ddc value: %s", strVal)
+	}
+	ddc.RemEvent(ev2.TenantID())
+	if strVal := ddc.GetStringValue(""); strVal != "1" {
+		t.Errorf("wrong ddc value: %s", strVal)
+	}
+	ddc.RemEvent(ev3.TenantID())
+	if strVal := ddc.GetStringValue(""); strVal != utils.NOT_AVAILABLE {
+		t.Errorf("wrong ddc value: %s", strVal)
+	}
+}
+
+func TestDDCGetFloat64Value(t *testing.T) {
+	ddc, _ := NewDCC()
+	ev := &StatEvent{Tenant: "cgrates.org", ID: "EVENT_1",
+		Fields: map[string]interface{}{
+			"AnswerTime":      time.Date(2014, 7, 14, 14, 25, 0, 0, time.UTC),
+			"Usage":           time.Duration(10 * time.Second),
+			utils.PDD:         time.Duration(5 * time.Second),
+			utils.DESTINATION: "1002"}}
+	ddc.AddEvent(ev)
+	if v := ddc.GetFloat64Value(); v != 1 {
+		t.Errorf("wrong ddc value: %v", v)
+	}
+	ev2 := &StatEvent{Tenant: "cgrates.org", ID: "EVENT_2"}
+	ddc.AddEvent(ev2)
+	if v := ddc.GetFloat64Value(); v != 1 {
+		t.Errorf("wrong ddc value: %v", v)
+	}
+	ev4 := &StatEvent{Tenant: "cgrates.org", ID: "EVENT_4",
+		Fields: map[string]interface{}{
+			"Usage":           time.Duration(1 * time.Minute),
+			"AnswerTime":      time.Date(2015, 7, 14, 14, 25, 0, 0, time.UTC),
+			utils.PDD:         time.Duration(10 * time.Second),
+			utils.DESTINATION: "1001",
+		},
+	}
+	ev5 := &StatEvent{Tenant: "cgrates.org", ID: "EVENT_5",
+		Fields: map[string]interface{}{
+			"Usage":           time.Duration(1*time.Minute + 30*time.Second),
+			"AnswerTime":      time.Date(2015, 7, 14, 14, 25, 0, 0, time.UTC),
+			utils.DESTINATION: "1003",
+		},
+	}
+	ddc.AddEvent(ev4)
+	if strVal := ddc.GetFloat64Value(); strVal != 2 {
+		t.Errorf("wrong ddc value: %v", strVal)
+	}
+	ddc.AddEvent(ev5)
+	if strVal := ddc.GetFloat64Value(); strVal != 3 {
+		t.Errorf("wrong ddc value: %v", strVal)
+	}
+	ddc.RemEvent(ev2.TenantID())
+	if strVal := ddc.GetFloat64Value(); strVal != 3 {
+		t.Errorf("wrong pdd value: %v", strVal)
+	}
+	ddc.RemEvent(ev4.TenantID())
+	if strVal := ddc.GetFloat64Value(); strVal != 2 {
+		t.Errorf("wrong ddc value: %v", strVal)
+	}
+	ddc.RemEvent(ev.TenantID())
+	if strVal := ddc.GetFloat64Value(); strVal != 1 {
+		t.Errorf("wrong ddc value: %v", strVal)
+	}
+	ddc.RemEvent(ev5.TenantID())
+	if strVal := ddc.GetFloat64Value(); strVal != -1.0 {
+		t.Errorf("wrong ddc value: %v", strVal)
+	}
+}