diff --git a/general_tests/tutorial_calls_test.go b/general_tests/tutorial_calls_test.go
index 5742d61eb..644d6d828 100755
--- a/general_tests/tutorial_calls_test.go
+++ b/general_tests/tutorial_calls_test.go
@@ -594,6 +594,29 @@ func testCallSyncSessions(t *testing.T) {
 	} else if len(*reply) != 2 {
 		t.Errorf("expecting 2, received reply: %+v", utils.ToJSON(reply))
 	}
+	//check if resource was allocated for 2 calls(1001->1002;1001->1003)
+	var rs *engine.Resources
+	args := &utils.ArgRSv1ResourceUsage{
+		CGREvent: utils.CGREvent{
+			Tenant: "cgrates.org",
+			ID:     "ResourceAllocation",
+			Event: map[string]interface{}{
+				utils.Account:     "1001",
+				utils.Subject:     "1001",
+				utils.Destination: "1002"},
+		},
+		Units: 1,
+	}
+	if err := tutorialCallsRpc.Call(utils.ResourceSv1GetResourcesForEvent, args, &rs); err != nil {
+		t.Error(err)
+	} else if len(*rs) != 2 {
+		t.Errorf("Resources: %+v", utils.ToJSON(rs))
+	}
+	for _, r := range *rs {
+		if r.ID == "ResGroup1" && (len(r.Usages) != 2 || len(r.TTLIdx) != 2) {
+			t.Errorf("Unexpected resource: %+v", utils.ToJSON(r))
+		}
+	}
 
 	time.Sleep(3 * time.Second)
 	//stop the FS
@@ -656,6 +679,19 @@ func testCallSyncSessions(t *testing.T) {
 		}
 	}
 
+	//check if resource was released
+	var rsAfter *engine.Resources
+	if err := tutorialCallsRpc.Call(utils.ResourceSv1GetResourcesForEvent, args, &rsAfter); err != nil {
+		t.Error(err)
+	} else if len(*rsAfter) != 2 {
+		t.Errorf("Resources: %+v", rsAfter)
+	}
+	for _, r := range *rsAfter {
+		if r.ID == "ResGroup1" &&
+			(len(r.Usages) != 0 || len(r.TTLIdx) != 0) {
+			t.Errorf("Unexpected resource: %+v", utils.ToJSON(r))
+		}
+	}
 }
 
 func testCallStopPjsuaListener(t *testing.T) {
diff --git a/sessions/session.go b/sessions/session.go
index 763b03dbe..9112347da 100644
--- a/sessions/session.go
+++ b/sessions/session.go
@@ -44,6 +44,7 @@ type SMGSession struct {
 	Timezone   string
 	EventStart SMGenericEvent         // Event which started the session
 	CD         *engine.CallDescriptor // initial CD used for debits, updated on each debit
+	ResourceID string
 
 	EventCost     *engine.EventCost
 	ExtraDuration time.Duration // keeps the current duration debited on top of what heas been asked
diff --git a/sessions/sessions.go b/sessions/sessions.go
index 50625d808..f046f0999 100644
--- a/sessions/sessions.go
+++ b/sessions/sessions.go
@@ -225,6 +225,23 @@ func (smg *SMGeneric) ttlTerminate(s *SMGSession, tmtr *smgSessionTerminator) {
 	cdr.Usage = s.TotalUsage
 	var reply string
 	smg.cdrsrv.Call("CdrsV1.ProcessCDR", cdr, &reply)
+	if smg.resS != nil && s.ResourceID != "" {
+		var reply string
+		argsRU := utils.ArgRSv1ResourceUsage{
+			CGREvent: utils.CGREvent{
+				Tenant: s.EventStart.GetTenant(utils.META_DEFAULT),
+				Event:  s.EventStart,
+			},
+			UsageID: s.ResourceID,
+			Units:   1,
+		}
+		if err := smg.resS.Call(utils.ResourceSv1ReleaseResources,
+			argsRU, &reply); err != nil {
+			utils.Logger.Warning(
+				fmt.Sprintf("<%s> error: %s could not release resource with resourceID: %s",
+					utils.SessionS, err.Error(), s.ResourceID))
+		}
+	}
 	smg.replicateSessionsWithID(s.CGRID, false, smg.smgReplConns)
 }
 
@@ -398,7 +415,7 @@ func (smg *SMGeneric) getSessionIDsForPrefix(prefix string, passiveSessions bool
 
 // sessionStart will handle a new session, pass the connectionId so we can communicate on disconnect request
 func (smg *SMGeneric) sessionStart(evStart SMGenericEvent,
-	clntConn rpcclient.RpcClientConnection) (err error) {
+	clntConn rpcclient.RpcClientConnection, resourceID string) (err error) {
 	cgrID := evStart.GetCGRID(utils.META_DEFAULT)
 	_, err = guardian.Guardian.Guard(func() (interface{}, error) { // Lock it on CGRID level
 		if pSS := smg.passiveToActive(cgrID); len(pSS) != 0 {
@@ -409,7 +426,7 @@ func (smg *SMGeneric) sessionStart(evStart SMGenericEvent,
 			evStart.AsCDR(smg.cgrCfg, smg.Timezone), &sessionRuns); err != nil {
 			return nil, err
 		} else if len(sessionRuns) == 0 {
-			s := &SMGSession{CGRID: cgrID, EventStart: evStart,
+			s := &SMGSession{CGRID: cgrID, ResourceID: resourceID, EventStart: evStart,
 				RunID: utils.META_NONE, Timezone: smg.Timezone,
 				rals: smg.rals, cdrsrv: smg.cdrsrv,
 				clntConn: clntConn}
@@ -418,7 +435,7 @@ func (smg *SMGeneric) sessionStart(evStart SMGenericEvent,
 		}
 		stopDebitChan := make(chan struct{})
 		for _, sessionRun := range sessionRuns {
-			s := &SMGSession{CGRID: cgrID, EventStart: evStart,
+			s := &SMGSession{CGRID: cgrID, ResourceID: resourceID, EventStart: evStart,
 				RunID: sessionRun.DerivedCharger.RunID, Timezone: smg.Timezone,
 				rals: smg.rals, cdrsrv: smg.cdrsrv,
 				CD: sessionRun.CallDescriptor, clntConn: clntConn,
@@ -722,7 +739,7 @@ func (smg *SMGeneric) GetMaxUsage(gev SMGenericEvent) (maxUsage time.Duration, e
 
 // Called on session start
 func (smg *SMGeneric) InitiateSession(gev SMGenericEvent,
-	clnt rpcclient.RpcClientConnection) (maxUsage time.Duration, err error) {
+	clnt rpcclient.RpcClientConnection, resourceID string) (maxUsage time.Duration, err error) {
 	cgrID := gev.GetCGRID(utils.META_DEFAULT)
 	cacheKey := "InitiateSession" + cgrID
 	if item, err := smg.responseCache.Get(cacheKey); err == nil && item != nil {
@@ -731,7 +748,7 @@ func (smg *SMGeneric) InitiateSession(gev SMGenericEvent,
 	defer smg.responseCache.Cache(cacheKey,
 		&utils.ResponseCacheItem{Value: maxUsage, Err: err}) // schedule response caching
 	smg.deletePassiveSessions(cgrID)
-	if err = smg.sessionStart(gev, clnt); err != nil {
+	if err = smg.sessionStart(gev, clnt, resourceID); err != nil {
 		smg.sessionEnd(cgrID, 0)
 		return
 	}
@@ -739,7 +756,7 @@ func (smg *SMGeneric) InitiateSession(gev SMGenericEvent,
 		maxUsage = time.Duration(-1)
 		return
 	}
-	maxUsage, err = smg.UpdateSession(gev, clnt)
+	maxUsage, err = smg.UpdateSession(gev, clnt, resourceID)
 	if err != nil || maxUsage == 0 {
 		smg.sessionEnd(cgrID, 0)
 	}
@@ -748,7 +765,7 @@ func (smg *SMGeneric) InitiateSession(gev SMGenericEvent,
 
 // Execute debits for usage/maxUsage
 func (smg *SMGeneric) UpdateSession(gev SMGenericEvent,
-	clnt rpcclient.RpcClientConnection) (maxUsage time.Duration, err error) {
+	clnt rpcclient.RpcClientConnection, resourceID string) (maxUsage time.Duration, err error) {
 	cgrID := gev.GetCGRID(utils.META_DEFAULT)
 	cacheKey := "UpdateSession" + cgrID
 	if item, err := smg.responseCache.Get(cacheKey); err == nil && item != nil {
@@ -765,7 +782,7 @@ func (smg *SMGeneric) UpdateSession(gev SMGenericEvent,
 		err = smg.sessionRelocate(initialCGRID,
 			cgrID, gev.GetOriginID(utils.META_DEFAULT))
 		if err == utils.ErrNotFound { // Session was already relocated, create a new  session with this update
-			err = smg.sessionStart(gev, clnt)
+			err = smg.sessionStart(gev, clnt, resourceID)
 		}
 		if err != nil {
 			return
@@ -820,7 +837,7 @@ func (smg *SMGeneric) UpdateSession(gev SMGenericEvent,
 
 // Called on session end, should stop debit loop
 func (smg *SMGeneric) TerminateSession(gev SMGenericEvent,
-	clnt rpcclient.RpcClientConnection) (err error) {
+	clnt rpcclient.RpcClientConnection, resourceID string) (err error) {
 	cgrID := gev.GetCGRID(utils.META_DEFAULT)
 	cacheKey := "TerminateSession" + cgrID
 	if item, err := smg.responseCache.Get(cacheKey); err == nil && item != nil {
@@ -832,7 +849,7 @@ func (smg *SMGeneric) TerminateSession(gev SMGenericEvent,
 		err = smg.sessionRelocate(initialCGRID, cgrID,
 			gev.GetOriginID(utils.META_DEFAULT))
 		if err == utils.ErrNotFound { // Session was already relocated, create a new  session with this update
-			err = smg.sessionStart(gev, clnt)
+			err = smg.sessionStart(gev, clnt, resourceID)
 		}
 		if err != nil && err != utils.ErrMandatoryIeMissing {
 			return
@@ -1104,7 +1121,7 @@ func (smg *SMGeneric) BiRPCV2GetMaxUsage(clnt rpcclient.RpcClientConnection,
 func (smg *SMGeneric) BiRPCV1InitiateSession(clnt rpcclient.RpcClientConnection,
 	ev SMGenericEvent, maxUsage *float64) (err error) {
 	var minMaxUsage time.Duration
-	if minMaxUsage, err = smg.InitiateSession(ev, clnt); err != nil {
+	if minMaxUsage, err = smg.InitiateSession(ev, clnt, ev.GetOriginID(utils.META_DEFAULT)); err != nil {
 		if err != rpcclient.ErrSessionNotFound {
 			err = utils.NewErrServerError(err)
 		}
@@ -1122,7 +1139,7 @@ func (smg *SMGeneric) BiRPCV1InitiateSession(clnt rpcclient.RpcClientConnection,
 func (smg *SMGeneric) BiRPCV2InitiateSession(clnt rpcclient.RpcClientConnection,
 	ev SMGenericEvent, maxUsage *time.Duration) (err error) {
 	var minMaxUsage time.Duration
-	if minMaxUsage, err = smg.InitiateSession(ev, clnt); err != nil {
+	if minMaxUsage, err = smg.InitiateSession(ev, clnt, ev.GetOriginID(utils.META_DEFAULT)); err != nil {
 		if err != rpcclient.ErrSessionNotFound {
 			err = utils.NewErrServerError(err)
 		}
@@ -1137,7 +1154,7 @@ func (smg *SMGeneric) BiRPCV2InitiateSession(clnt rpcclient.RpcClientConnection,
 func (smg *SMGeneric) BiRPCV1UpdateSession(clnt rpcclient.RpcClientConnection,
 	ev SMGenericEvent, maxUsage *float64) (err error) {
 	var minMaxUsage time.Duration
-	if minMaxUsage, err = smg.UpdateSession(ev, clnt); err != nil {
+	if minMaxUsage, err = smg.UpdateSession(ev, clnt, ev.GetOriginID(utils.META_DEFAULT)); err != nil {
 		if err != rpcclient.ErrSessionNotFound {
 			err = utils.NewErrServerError(err)
 		}
@@ -1155,7 +1172,7 @@ func (smg *SMGeneric) BiRPCV1UpdateSession(clnt rpcclient.RpcClientConnection,
 func (smg *SMGeneric) BiRPCV2UpdateSession(clnt rpcclient.RpcClientConnection,
 	ev SMGenericEvent, maxUsage *time.Duration) (err error) {
 	var minMaxUsage time.Duration
-	if minMaxUsage, err = smg.UpdateSession(ev, clnt); err != nil {
+	if minMaxUsage, err = smg.UpdateSession(ev, clnt, ev.GetOriginID(utils.META_DEFAULT)); err != nil {
 		if err != rpcclient.ErrSessionNotFound {
 			err = utils.NewErrServerError(err)
 		}
@@ -1168,7 +1185,7 @@ func (smg *SMGeneric) BiRPCV2UpdateSession(clnt rpcclient.RpcClientConnection,
 // Called on session end, should stop debit loop
 func (smg *SMGeneric) BiRPCV1TerminateSession(clnt rpcclient.RpcClientConnection,
 	ev SMGenericEvent, reply *string) (err error) {
-	if err = smg.TerminateSession(ev, clnt); err != nil {
+	if err = smg.TerminateSession(ev, clnt, ev.GetOriginID(utils.META_DEFAULT)); err != nil {
 		if err != rpcclient.ErrSessionNotFound {
 			err = utils.NewErrServerError(err)
 		}
@@ -1677,7 +1694,11 @@ func (smg *SMGeneric) BiRPCv1InitiateSession(clnt rpcclient.RpcClientConnection,
 		if smg.rals == nil {
 			return utils.NewErrNotConnected(utils.RALService)
 		}
-		if maxUsage, err := smg.InitiateSession(args.CGREvent.Event, clnt); err != nil {
+		originID, err := args.CGREvent.FieldAsString(utils.OriginID)
+		if err != nil {
+			return utils.NewErrMandatoryIeMissing(utils.OriginID)
+		}
+		if maxUsage, err := smg.InitiateSession(args.CGREvent.Event, clnt, originID); err != nil {
 			return utils.NewErrRALs(err)
 		} else {
 			rply.MaxUsage = &maxUsage
@@ -1826,7 +1847,11 @@ func (smg *SMGeneric) BiRPCv1UpdateSession(clnt rpcclient.RpcClientConnection,
 		if smg.rals == nil {
 			return utils.NewErrNotConnected(utils.RALService)
 		}
-		if maxUsage, err := smg.UpdateSession(args.CGREvent.Event, clnt); err != nil {
+		originID, err := args.CGREvent.FieldAsString(utils.OriginID)
+		if err != nil {
+			return utils.NewErrMandatoryIeMissing(utils.OriginID)
+		}
+		if maxUsage, err := smg.UpdateSession(args.CGREvent.Event, clnt, originID); err != nil {
 			return utils.NewErrRALs(err)
 		} else {
 			rply.MaxUsage = &maxUsage
@@ -1869,7 +1894,11 @@ func (smg *SMGeneric) BiRPCv1TerminateSession(clnt rpcclient.RpcClientConnection
 		if smg.rals == nil {
 			return utils.NewErrNotConnected(utils.RALService)
 		}
-		if err = smg.TerminateSession(args.CGREvent.Event, clnt); err != nil {
+		originID, err := args.CGREvent.FieldAsString(utils.OriginID)
+		if err != nil {
+			return utils.NewErrMandatoryIeMissing(utils.OriginID)
+		}
+		if err = smg.TerminateSession(args.CGREvent.Event, clnt, originID); err != nil {
 			return utils.NewErrRALs(err)
 		}
 	}