diff --git a/sessionmanager/fssessionmanager.go b/sessionmanager/fssessionmanager.go
index a2661b16e..57556d0ea 100644
--- a/sessionmanager/fssessionmanager.go
+++ b/sessionmanager/fssessionmanager.go
@@ -192,6 +192,9 @@ func (sm *FSSessionManager) unparkCall(uuid, connId, call_dest_nb, notify string
 }
 
 func (sm *FSSessionManager) onChannelPark(ev engine.Event, connId string) {
+	if ev.GetReqType(utils.META_DEFAULT) == utils.META_NONE { // Do not process this request
+		return
+	}
 	var maxCallDuration float64 // This will be the maximum duration this channel will be allowed to last
 	if err := sm.rater.GetDerivedMaxSessionTime(*ev.AsStoredCdr(), &maxCallDuration); err != nil {
 		engine.Logger.Err(fmt.Sprintf("<SM-FreeSWITCH> Could not get max session time for %s, error: %s", ev.GetUUID(), err.Error()))
@@ -214,6 +217,9 @@ func (sm *FSSessionManager) onChannelPark(ev engine.Event, connId string) {
 }
 
 func (sm *FSSessionManager) onChannelAnswer(ev engine.Event, connId string) {
+	if ev.GetReqType(utils.META_DEFAULT) == utils.META_NONE { // Do not process this request
+		return
+	}
 	if ev.MissingParameter() {
 		sm.DisconnectSession(ev, connId, MISSING_PARAMETER)
 	}
@@ -224,6 +230,9 @@ func (sm *FSSessionManager) onChannelAnswer(ev engine.Event, connId string) {
 }
 
 func (sm *FSSessionManager) onChannelHangupComplete(ev engine.Event) {
+	if ev.GetReqType(utils.META_DEFAULT) == utils.META_NONE { // Do not process this request
+		return
+	}
 	if sm.cdrs != nil {
 		go sm.ProcessCdr(ev.AsStoredCdr())
 	}
diff --git a/sessionmanager/kamailiosm.go b/sessionmanager/kamailiosm.go
index f912b950a..6f437d13b 100644
--- a/sessionmanager/kamailiosm.go
+++ b/sessionmanager/kamailiosm.go
@@ -49,6 +49,9 @@ func (self *KamailioSessionManager) onCgrAuth(evData []byte, connId string) {
 	if err != nil {
 		engine.Logger.Info(fmt.Sprintf("<SM-Kamailio> ERROR unmarshalling event: %s, error: %s", evData, err.Error()))
 	}
+	if kev.GetReqType(utils.META_DEFAULT) == utils.META_NONE { // Do not process this request
+		return
+	}
 	if kev.MissingParameter() {
 		if kar, err := kev.AsKamAuthReply(0.0, errors.New(utils.ERR_MANDATORY_IE_MISSING)); err != nil {
 			engine.Logger.Err(fmt.Sprintf("<SM-Kamailio> Failed building auth reply %s", err.Error()))
@@ -73,6 +76,9 @@ func (self *KamailioSessionManager) onCallStart(evData []byte, connId string) {
 	if err != nil {
 		engine.Logger.Err(fmt.Sprintf("<SM-Kamailio> ERROR unmarshalling event: %s, error: %s", evData, err.Error()))
 	}
+	if kev.GetReqType(utils.META_DEFAULT) == utils.META_NONE { // Do not process this request
+		return
+	}
 	if kamEv.MissingParameter() {
 		self.DisconnectSession(kamEv, "", utils.ERR_MANDATORY_IE_MISSING)
 		return
@@ -88,6 +94,9 @@ func (self *KamailioSessionManager) onCallEnd(evData []byte, connId string) {
 	if err != nil {
 		engine.Logger.Err(fmt.Sprintf("<SM-Kamailio> ERROR unmarshalling event: %s, error: %s", evData, err.Error()))
 	}
+	if kev.GetReqType(utils.META_DEFAULT) == utils.META_NONE { // Do not process this request
+		return
+	}
 	if kev.MissingParameter() {
 		engine.Logger.Err(fmt.Sprintf("<SM-Kamailio> Mandatory IE missing out of event: %+v", kev))
 	}
diff --git a/sessionmanager/osipssm.go b/sessionmanager/osipssm.go
index ef045dd53..fca6ade3d 100644
--- a/sessionmanager/osipssm.go
+++ b/sessionmanager/osipssm.go
@@ -162,6 +162,9 @@ func (osm *OsipsSessionManager) ProcessCdr(storedCdr *engine.StoredCdr) error {
 // Process Authorize request from OpenSIPS and communicate back maxdur
 func (osm *OsipsSessionManager) onAuthorize(osipsDagram *osipsdagram.OsipsEvent) {
 	ev, _ := NewOsipsEvent(osipsDagram)
+	if ev.GetReqType(utils.META_DEFAULT) == utils.META_NONE { // Do not process this request
+		return
+	}
 	if ev.MissingParameter() {
 		cmdNotify := fmt.Sprintf(":cache_store:\nlocal\n%s/cgr_notify\n%s\n2\n\n", ev.GetUUID(), utils.ERR_MANDATORY_IE_MISSING)
 		if reply, err := osm.miConn.SendCommand([]byte(cmdNotify)); err != nil || !bytes.HasPrefix(reply, []byte("200 OK")) {
diff --git a/utils/consts.go b/utils/consts.go
index 6878ef9ea..91ad921ef 100644
--- a/utils/consts.go
+++ b/utils/consts.go
@@ -18,6 +18,7 @@ const (
 	META_PSEUDOPREPAID           = "*pseudoprepaid"
 	RATED                        = "rated"
 	META_RATED                   = "*rated"
+	META_NONE                    = "*none"
 	ERR_NOT_IMPLEMENTED          = "NOT_IMPLEMENTED"
 	ERR_SERVER_ERROR             = "SERVER_ERROR"
 	ERR_NOT_FOUND                = "NOT_FOUND"