diff --git a/agents/dnsagent.go b/agents/dnsagent.go
index 0eaad2708..ad30cba6f 100644
--- a/agents/dnsagent.go
+++ b/agents/dnsagent.go
@@ -92,7 +92,6 @@ func (da *DNSAgent) handleMessage(w dns.ResponseWriter, req *dns.Msg) {
 		}
 		reqVars[E164Address] = e164
 		reqVars[DomainName] = domainNameFromNAPTR(req.Question[0].Name)
-
 	}
 	cgrRplyNM := config.NewNavigableMap(nil)
 	rplyNM := config.NewNavigableMap(nil) // share it among different processors
diff --git a/data/conf/samples/dnsagent/attributes.json b/data/conf/samples/dnsagent/attributes.json
index 4a7629a6c..78f9449e1 100644
--- a/data/conf/samples/dnsagent/attributes.json
+++ b/data/conf/samples/dnsagent/attributes.json
@@ -21,7 +21,7 @@
 					"type": "*constant", "value": "U"},
 				{"tag": "NAPTRService", "field_id": "Service", 
 					"type": "*constant", "value": "E2U+SIP"},
-				{"tag": "NAPTRReplacement", "field_id": "Regexp", 
+				{"tag": "NAPTRRegex", "field_id": "Regexp", 
 					"type": "*variable", "value": "~*cgrep.Attributes.NAPTRAddress"},
 			],
 		},
diff --git a/data/conf/samples/dnsagent/dryrun.json b/data/conf/samples/dnsagent/dryrun.json
index ebdfb2c32..e485a7997 100644
--- a/data/conf/samples/dnsagent/dryrun.json
+++ b/data/conf/samples/dnsagent/dryrun.json
@@ -14,8 +14,8 @@
 				{"tag": "NAPTRPreference", "field_id": "Preference", "type": "*constant", "value": "10"},
 				{"tag": "NAPTRFlags", "field_id": "Flags", "type": "*constant", "value": "U"},
 				{"tag": "NAPTRService", "field_id": "Service", "type": "*constant", "value": "E2U+SIP"},
-				{"tag": "NAPTRRegexp", "field_id": "Regexp", "type": "*constant", "value": "^.*$"},
-				{"tag": "NAPTRReplacement", "field_id": "Replacement", "type": "*constant", "value": "sip:\\1@172.16.1.10."},
+				{"tag": "NAPTRRegexp", "field_id": "Regexp", "type": "*constant", "value": "!^(.*)$!sip:\\1@172.16.1.10.!"},
+				{"tag": "NAPTRReplacement", "field_id": "Replacement", "type": "*constant", "value": "."},
 			],
 		},
 	],
diff --git a/data/conf/samples/dnsagent/suppliers.json b/data/conf/samples/dnsagent/suppliers.json
index ab4e007ba..abf662d3c 100644
--- a/data/conf/samples/dnsagent/suppliers.json
+++ b/data/conf/samples/dnsagent/suppliers.json
@@ -33,6 +33,8 @@
 					"type": "*constant", "value": "E2U+SIP"},
 				{"tag": "NAPTRRegexp", "field_id": "Regexp", "type": "*variable", 
 					"value": "~*cgrep.Suppliers.SortedSuppliers[0].SupplierParameters"},
+				{"tag": "NAPTRReplacement", "field_id": "Replacement",
+					"type": "*constant", "value": "."},
 			],
 			"continue": true,
 		},
@@ -53,6 +55,8 @@
 					"type": "*constant", "value": "E2U+SIP"},
 				{"tag": "NAPTRRegexp", "field_id": "Regexp", "type": "*variable", 
 					"value": "~*cgrep.Suppliers.SortedSuppliers[1].SupplierParameters"},
+				{"tag": "NAPTRReplacement", "field_id": "Replacement",
+					"type": "*constant", "value": "."},
 			],
 			"continue": true,
 		},
diff --git a/sessions/sessions.go b/sessions/sessions.go
index 75921e554..ff03f4ddd 100644
--- a/sessions/sessions.go
+++ b/sessions/sessions.go
@@ -3009,7 +3009,298 @@ func (sS *SessionS) BiRPCv1ProcessEvent(clnt rpcclient.RpcClientConnection,
 				fmt.Sprintf("<%s> error: %s processing event %+v with StatS.",
 					utils.SessionS, err.Error(), args.CGREvent))
 		}
-		rply.ThresholdIDs = &statReply
+		rply.StatQueueIDs = &statReply
+	}
+	return nil
+}
+
+// V2ProcessEventArgs are the options passed to ProcessEvent API
+type V2ProcessEventArgs struct {
+	Flags []string
+	*utils.CGREvent
+	utils.Paginator
+	*utils.ArgDispatcher
+}
+
+// V2ProcessEventReply is the reply for the ProcessEvent API
+type V2ProcessEventReply struct {
+	MaxUsage              *time.Duration
+	ResourceAuthorization *string
+	ResourceAllocation    *string
+	Attributes            *engine.AttrSProcessEventReply
+	Suppliers             *engine.SortedSuppliers
+	ThresholdIDs          *[]string
+	StatQueueIDs          *[]string
+}
+
+// BiRPCv1ProcessEvent processes one event with the right subsystems based on arguments received
+func (sS *SessionS) BiRPCv2ProcessEvent(clnt rpcclient.RpcClientConnection,
+	args *V2ProcessEventArgs, rply *V2ProcessEventReply) (err error) {
+	if args.CGREvent.ID == "" {
+		args.CGREvent.ID = utils.GenUUID()
+	}
+
+	// RPC caching
+	if sS.cgrCfg.CacheCfg()[utils.CacheRPCResponses].Limit != 0 {
+		cacheKey := utils.ConcatenatedKey(utils.SessionSv2ProcessEvent, args.CGREvent.ID)
+		refID := guardian.Guardian.GuardIDs("",
+			sS.cgrCfg.GeneralCfg().LockingTimeout, cacheKey) // RPC caching needs to be atomic
+		defer guardian.Guardian.UnguardIDs(refID)
+
+		if itm, has := engine.Cache.Get(utils.CacheRPCResponses, cacheKey); has {
+			cachedResp := itm.(*utils.CachedRPCResponse)
+			if cachedResp.Error == nil {
+				*rply = *cachedResp.Result.(*V1ProcessEventReply)
+			}
+			return cachedResp.Error
+		}
+		defer engine.Cache.Set(utils.CacheRPCResponses, cacheKey,
+			&utils.CachedRPCResponse{Result: rply, Error: err},
+			nil, true, utils.NonTransactional)
+	}
+	// end of RPC caching
+
+	if args.CGREvent.Tenant == "" {
+		args.CGREvent.Tenant = sS.cgrCfg.GeneralCfg().DefaultTenant
+	}
+	me := engine.NewMapEvent(args.CGREvent.Event)
+	originID := me.GetStringIgnoreErrors(utils.OriginID)
+
+	//convert from Flags []string to utils.FlagsWithParams
+	argsFlagsWithParams, err := utils.FlagsWithParamsFromSlice(args.Flags)
+	if err != nil {
+		return
+	}
+
+	// check for *attribute
+	if argsFlagsWithParams.HasKey(utils.MetaAttributes) {
+		if sS.attrS == nil {
+			return utils.NewErrNotConnected(utils.AttributeS)
+		}
+		attrArgs := &engine.AttrArgsProcessEvent{
+			Context:       utils.StringPointer(utils.MetaSessionS),
+			CGREvent:      args.CGREvent,
+			ArgDispatcher: args.ArgDispatcher,
+		}
+		if attrIDs := argsFlagsWithParams.ParamsSlice(utils.MetaAttributes); len(attrIDs) != 0 {
+			attrArgs.AttributeIDs = attrIDs
+		}
+		var rplyEv engine.AttrSProcessEventReply
+		if err := sS.attrS.Call(utils.AttributeSv1ProcessEvent,
+			attrArgs, &rplyEv); err == nil {
+			args.CGREvent = rplyEv.CGREvent
+			if tntIface, has := args.CGREvent.Event[utils.MetaTenant]; has {
+				// special case when we want to overwrite the tenant
+				args.CGREvent.Tenant = tntIface.(string)
+				delete(args.CGREvent.Event, utils.MetaTenant)
+			}
+			rply.Attributes = &rplyEv
+		} else if err.Error() != utils.ErrNotFound.Error() {
+			return utils.NewErrAttributeS(err)
+		}
+	}
+	//check for auth session
+	if argsFlagsWithParams.HasKey(utils.MetaAuth) {
+		maxUsage, err := sS.authSession(args.CGREvent.Tenant,
+			engine.NewSafEvent(args.CGREvent.Event))
+		if err != nil {
+			return utils.NewErrRALs(err)
+		}
+		rply.MaxUsage = &maxUsage
+	}
+	// check for *resources
+	if argsFlagsWithParams.HasKey(utils.MetaResources) {
+		if sS.resS == nil {
+			return utils.NewErrNotConnected(utils.ResourceS)
+		}
+		if originID == "" {
+			return utils.NewErrMandatoryIeMissing(utils.OriginID)
+		}
+		attrRU := utils.ArgRSv1ResourceUsage{
+			CGREvent:      args.CGREvent,
+			UsageID:       originID,
+			Units:         1,
+			ArgDispatcher: args.ArgDispatcher,
+		}
+		var resMessage string
+		// check what we need to do for resources (*authorization/*allocation)
+		if resOpt := argsFlagsWithParams.ParamsSlice(utils.MetaResources); len(resOpt) != 0 {
+			if resOpt[0] == utils.MetaAuthorize {
+				if err = sS.resS.Call(utils.ResourceSv1AuthorizeResources,
+					attrRU, &resMessage); err != nil {
+					return utils.NewErrResourceS(err)
+				}
+				rply.ResourceAuthorization = &resMessage
+			}
+			if resOpt[0] == utils.MetaAllocate {
+				if err = sS.resS.Call(utils.ResourceSv1AllocateResources,
+					attrRU, &resMessage); err != nil {
+					return utils.NewErrResourceS(err)
+				}
+				rply.ResourceAllocation = &resMessage
+			}
+
+		}
+	}
+	// check for init session
+	if argsFlagsWithParams.HasKey(utils.MetaInitiate) {
+		var err error
+		ev := engine.NewSafEvent(args.CGREvent.Event)
+		dbtItvl := sS.cgrCfg.SessionSCfg().DebitInterval
+		if ev.HasField(utils.CGRDebitInterval) { // dynamic DebitInterval via CGRDebitInterval
+			if dbtItvl, err = ev.GetDuration(utils.CGRDebitInterval); err != nil {
+				return utils.NewErrRALs(err)
+			}
+		}
+		s, err := sS.initSession(args.CGREvent.Tenant, ev,
+			sS.biJClntID(clnt), originID, dbtItvl, args.ArgDispatcher)
+		if err != nil {
+			return utils.NewErrRALs(err)
+		}
+		if dbtItvl > 0 { //active debit
+			rply.MaxUsage = utils.DurationPointer(time.Duration(-1))
+		} else {
+			if maxUsage, err := sS.updateSession(s, nil); err != nil {
+				return utils.NewErrRALs(err)
+			} else {
+				rply.MaxUsage = &maxUsage
+			}
+		}
+	}
+	// check for terminate session
+	if argsFlagsWithParams.HasKey(utils.MetaTerminate) {
+		if originID == "" {
+			return utils.NewErrMandatoryIeMissing(utils.OriginID)
+		}
+		dbtItvl := sS.cgrCfg.SessionSCfg().DebitInterval
+		if ev.HasField(utils.CGRDebitInterval) { // dynamic DebitInterval via CGRDebitInterval
+			if dbtItvl, err = ev.GetDuration(utils.CGRDebitInterval); err != nil {
+				return utils.NewErrRALs(err)
+			}
+		}
+		ss := sS.getRelocateSessions(cgrID,
+			me.GetStringIgnoreErrors(utils.InitialOriginID),
+			me.GetStringIgnoreErrors(utils.OriginID),
+			me.GetStringIgnoreErrors(utils.OriginHost))
+		var s *Session
+		if len(ss) == 0 {
+			if s, err = sS.initSession(args.CGREvent.Tenant,
+				ev, sS.biJClntID(clnt),
+				me.GetStringIgnoreErrors(utils.OriginID), dbtItvl, args.ArgDispatcher); err != nil {
+				return utils.NewErrRALs(err)
+			}
+		} else {
+			s = ss[0]
+		}
+		if err = sS.endSession(s,
+			me.GetDurationPtrIgnoreErrors(utils.Usage),
+			me.GetDurationPtrIgnoreErrors(utils.LastUsed),
+			utils.TimePointer(me.GetTimeIgnoreErrors(utils.AnswerTime, utils.EmptyString))); err != nil {
+			return utils.NewErrRALs(err)
+		}
+	}
+	// in case we need to release a resource we do this after we close the session
+	if argsFlagsWithParams.HasKey(utils.MetaResources) {
+		if resOpt := argsFlagsWithParams.ParamsSlice(utils.MetaResources); len(resOpt) != 0 &&
+			resOpt[0] == utils.MetaRelease {
+			if sS.resS == nil {
+				return utils.NewErrNotConnected(utils.ResourceS)
+			}
+			if originID == "" {
+				return utils.NewErrMandatoryIeMissing(utils.OriginID)
+			}
+			var reply string
+			argsRU := utils.ArgRSv1ResourceUsage{
+				CGREvent:      args.CGREvent,
+				UsageID:       originID, // same ID should be accepted by first group since the previous resource should be expired
+				Units:         1,
+				ArgDispatcher: args.ArgDispatcher,
+			}
+			if err = sS.resS.Call(utils.ResourceSv1ReleaseResources,
+				argsRU, &reply); err != nil {
+				return utils.NewErrResourceS(err)
+			}
+		}
+	}
+	// get suppliers if required
+	if argsFlagsWithParams.HasKey(utils.MetaSuppliers) {
+		if sS.splS == nil {
+			return utils.NewErrNotConnected(utils.SupplierS)
+		}
+		cgrEv := args.CGREvent.Clone()
+		if acd, has := cgrEv.Event[utils.ACD]; has {
+			cgrEv.Event[utils.Usage] = acd
+		}
+		var splsReply engine.SortedSuppliers
+		sArgs := &engine.ArgsGetSuppliers{
+			CGREvent:      cgrEv,
+			Paginator:     args.Paginator,
+			ArgDispatcher: args.ArgDispatcher,
+		}
+		// check in case we have options for suppliers
+		if splOpts := argsFlagsWithParams.ParamsSlice(utils.MetaSuppliers); len(splOpts) != 0 {
+			for _, splOpt := range splOpts {
+				if splOpt == utils.MetaIgnoreErrors {
+					sArgs.IgnoreErrors = true
+				}
+				if splOpt == utils.MetaEventCost {
+					sArgs.MaxCost = utils.MetaSuppliersEventCost
+				}
+			}
+		}
+		if err = sS.splS.Call(utils.SupplierSv1GetSuppliers,
+			sArgs, &splsReply); err != nil {
+			return utils.NewErrSupplierS(err)
+		}
+		if splsReply.SortedSuppliers != nil {
+			rply.Suppliers = &splsReply
+		}
+	}
+	// process thresholds if required
+	if argsFlagsWithParams.HasKey(utils.MetaThresholds) {
+		if sS.thdS == nil {
+			return utils.NewErrNotConnected(utils.ThresholdS)
+		}
+		var tIDs []string
+		thEv := &engine.ArgsProcessEvent{
+			CGREvent:      args.CGREvent,
+			ArgDispatcher: args.ArgDispatcher,
+		}
+		// check in case we have ThresholdIDs inside flags
+		if thIDs := argsFlagsWithParams.ParamsSlice(utils.MetaThresholds); len(thIDs) != 0 {
+			thEv.ThresholdIDs = thIDs
+		}
+		if err := sS.thdS.Call(utils.ThresholdSv1ProcessEvent,
+			thEv, &tIDs); err != nil &&
+			err.Error() != utils.ErrNotFound.Error() {
+			utils.Logger.Warning(
+				fmt.Sprintf("<%s> error: %s processing event %+v with ThresholdS.",
+					utils.SessionS, err.Error(), thEv))
+		}
+		rply.ThresholdIDs = &tIDs
+	}
+	// process stats if required
+	if argsFlagsWithParams.HasKey(utils.MetaStats) {
+		if sS.statS == nil {
+			return utils.NewErrNotConnected(utils.StatS)
+		}
+		var statReply []string
+		statArgs := &engine.StatsArgsProcessEvent{
+			CGREvent:      args.CGREvent,
+			ArgDispatcher: args.ArgDispatcher,
+		}
+		// check in case we have StatIDs inside flags
+		if stsIDs := argsFlagsWithParams.ParamsSlice(utils.MetaStats); len(stsIDs) != 0 {
+			statArgs.StatIDs = stsIDs
+		}
+		if err := sS.statS.Call(utils.StatSv1ProcessEvent,
+			statArgs, &statReply); err != nil &&
+			err.Error() != utils.ErrNotFound.Error() {
+			utils.Logger.Warning(
+				fmt.Sprintf("<%s> error: %s processing event %+v with StatS.",
+					utils.SessionS, err.Error(), args.CGREvent))
+		}
+		rply.StatQueueIDs = &statReply
 	}
 	return nil
 }
diff --git a/utils/consts.go b/utils/consts.go
index 013117da4..8c2540034 100755
--- a/utils/consts.go
+++ b/utils/consts.go
@@ -609,6 +609,9 @@ const (
 	CGREventString               = "CGREvent"
 	MetaPing                     = "*ping"
 	MetaTextPlain                = "*text_plain"
+	MetaIgnoreErrors             = "*ignore_errors"
+	MetaRelease                  = "*release"
+	MetaAllocate                 = "*allocate"
 )
 
 // Migrator Action
diff --git a/utils/map.go b/utils/map.go
index c4e6c514d..68d471972 100644
--- a/utils/map.go
+++ b/utils/map.go
@@ -19,6 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>
 package utils
 
 import (
+	"reflect"
 	"strconv"
 	"strings"
 )
@@ -275,3 +276,15 @@ func (fWp FlagsWithParams) ParamsSlice(subs string) (ps []string) {
 	}
 	return ps
 }
+
+//func to convert from FlagsWithParams back to []string
+func (fWp FlagsWithParams) SliceFlags() (sls []string) {
+	for key, _ := range fWp {
+		if prmSlice := fWp.ParamsSlice(key); !reflect.DeepEqual(prmSlice, []string{}) {
+			sls = append(sls, ConcatenatedKey(key, strings.Join(prmSlice, INFIELD_SEP)))
+		} else {
+			sls = append(sls, key)
+		}
+	}
+	return
+}
diff --git a/utils/map_test.go b/utils/map_test.go
index b925c087e..65d8bf14f 100644
--- a/utils/map_test.go
+++ b/utils/map_test.go
@@ -19,6 +19,7 @@ package utils
 
 import (
 	"reflect"
+	"sort"
 	"testing"
 )
 
@@ -161,7 +162,6 @@ func TestMapSubsystemIDsHasKey(t *testing.T) {
 	if has := mp.HasKey("*resources"); has {
 		t.Errorf("Expecting: false, received: %+v", has)
 	}
-
 }
 
 func TestMapSubsystemIDsGetIDs(t *testing.T) {
@@ -190,5 +190,26 @@ func TestMapSubsystemIDsGetIDs(t *testing.T) {
 	if ids := mp.ParamsSlice("*test"); !reflect.DeepEqual(ids, eIDs) {
 		t.Errorf("Expecting: %+v, received: %+v", eIDs, ids)
 	}
-
+}
+
+func TestFlagsToSlice(t *testing.T) {
+	sls := []string{"*event", "*thresholds:ID1;ID2;ID3", "*attributes", "*stats:ID"}
+	eMp := FlagsWithParams{
+		"*event":      []string{},
+		"*thresholds": []string{"ID1", "ID2", "ID3"},
+		"*attributes": []string{},
+		"*stats":      []string{"ID"},
+	}
+	mp, err := FlagsWithParamsFromSlice(sls)
+	if err != nil {
+		t.Error(err)
+	} else if !reflect.DeepEqual(mp, eMp) {
+		t.Errorf("Expecting: %+v, received: %+v", eMp, mp)
+	}
+	sort.Strings(sls)
+	flgSls := mp.SliceFlags()
+	sort.Strings(flgSls)
+	if !reflect.DeepEqual(flgSls, sls) {
+		t.Errorf("Expecting: %+v, received: %+v", sls, flgSls)
+	}
 }