diff --git a/cmd/cgr-engine/cgr-engine.go b/cmd/cgr-engine/cgr-engine.go
index 6dcaff4d5..91ca02101 100644
--- a/cmd/cgr-engine/cgr-engine.go
+++ b/cmd/cgr-engine/cgr-engine.go
@@ -44,7 +44,6 @@ import (
 	"github.com/cgrates/cgrates/services"
 	"github.com/cgrates/cgrates/servmanager"
 	"github.com/cgrates/cgrates/utils"
-	"github.com/cgrates/rpcclient"
 )
 
 func main() {
@@ -161,63 +160,12 @@ func runCGREngine(fs []string) (err error) {
 		utils.TPeS:            new(sync.WaitGroup),
 	}
 
-	// init the channel here because we need to pass them to connManager
 	iServeManagerCh := make(chan birpc.ClientConnector, 1)
-	iConfigCh := make(chan birpc.ClientConnector, 1)
-	iCoreSv1Ch := make(chan birpc.ClientConnector, 1)
-	iCacheSCh := make(chan birpc.ClientConnector, 1)
-	iGuardianSCh := make(chan birpc.ClientConnector, 1)
-	iAnalyzerSCh := make(chan birpc.ClientConnector, 1)
-	iCDRServerCh := make(chan birpc.ClientConnector, 1)
-	iAttributeSCh := make(chan birpc.ClientConnector, 1)
-	iDispatcherSCh := make(chan birpc.ClientConnector, 1)
-	iSessionSCh := make(chan birpc.ClientConnector, 1)
-	iChargerSCh := make(chan birpc.ClientConnector, 1)
-	iThresholdSCh := make(chan birpc.ClientConnector, 1)
-	iStatSCh := make(chan birpc.ClientConnector, 1)
-	iTrendSCh := make(chan birpc.ClientConnector, 1)
-	iRankingSCh := make(chan birpc.ClientConnector, 1)
-	iResourceSCh := make(chan birpc.ClientConnector, 1)
-	iRouteSCh := make(chan birpc.ClientConnector, 1)
-	iAdminSCh := make(chan birpc.ClientConnector, 1)
-	iLoaderSCh := make(chan birpc.ClientConnector, 1)
-	iEEsCh := make(chan birpc.ClientConnector, 1)
-	iRateSCh := make(chan birpc.ClientConnector, 1)
-	iActionSCh := make(chan birpc.ClientConnector, 1)
-	iAccountSCh := make(chan birpc.ClientConnector, 1)
-	iTpeSCh := make(chan birpc.ClientConnector, 1)
-	iEFsCh := make(chan birpc.ClientConnector, 1)
-	iERsCh := make(chan birpc.ClientConnector, 1)
-
-	// initialize the connManager before creating the DMService
-	// because we need to pass the connection to it
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaAnalyzerS), utils.AnalyzerSv1, iAnalyzerSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaAdminS), utils.AdminSv1, iAdminSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaAttributes), utils.AttributeSv1, iAttributeSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaCaches), utils.CacheSv1, iCacheSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaCDRs), utils.CDRsV1, iCDRServerCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaChargers), utils.ChargerSv1, iChargerSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaGuardian), utils.GuardianSv1, iGuardianSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaLoaders), utils.LoaderSv1, iLoaderSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaResources), utils.ResourceSv1, iResourceSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(rpcclient.BiRPCInternal, utils.MetaSessionS), utils.SessionSv1, iSessionSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaSessionS), utils.SessionSv1, iSessionSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaStats), utils.StatSv1, iStatSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaRankings), utils.RankingSv1, iRankingSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaTrends), utils.TrendSv1, iTrendSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaRoutes), utils.RouteSv1, iRouteSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaThresholds), utils.ThresholdSv1, iThresholdSCh)
 	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaServiceManager), utils.ServiceManagerV1, iServeManagerCh)
+	iConfigCh := make(chan birpc.ClientConnector, 1)
 	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaConfig), utils.ConfigSv1, iConfigCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaCore), utils.CoreSv1, iCoreSv1Ch)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaEEs), utils.EeSv1, iEEsCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaRates), utils.RateSv1, iRateSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaDispatchers), utils.DispatcherSv1, iDispatcherSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaAccounts), utils.AccountSv1, iAccountSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaActions), utils.ActionSv1, iActionSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaTpes), utils.TPeSv1, iTpeSCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaEFs), utils.EfSv1, iEFsCh)
-	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaERs), utils.ErSv1, iERsCh)
+	iGuardianSCh := make(chan birpc.ClientConnector, 1)
+	connMgr.AddInternalConn(utils.ConcatenatedKey(utils.MetaInternal, utils.MetaGuardian), utils.GuardianSv1, iGuardianSCh)
 
 	clsCh := make(chan *commonlisteners.CommonListenerS, 1)
 	anzCh := make(chan *services.AnalyzerService, 1)
@@ -229,23 +177,23 @@ func runCGREngine(fs []string) (err error) {
 	dmS := services.NewDataDBService(cfg, connMgr, *flags.SetVersions, srvDep, srvIdxr)
 	sdbS := services.NewStorDBService(cfg, *flags.SetVersions, srvDep, srvIdxr)
 	cls := services.NewCommonListenerService(cfg, caps, clsCh, srvDep, srvIdxr)
-	anzS := services.NewAnalyzerService(cfg, clsCh, iFilterSCh, iAnalyzerSCh, anzCh, srvDep, srvIdxr)
-	coreS := services.NewCoreService(cfg, caps, clsCh, iCoreSv1Ch, anzCh, cpuPrfF, shdWg, srvDep, srvIdxr)
-	cacheS := services.NewCacheService(cfg, dmS, connMgr, clsCh, iCacheSCh, anzCh, coreS, srvDep, srvIdxr)
-	dspS := services.NewDispatcherService(cfg, dmS, cacheS, iFilterSCh, clsCh, iDispatcherSCh, connMgr, anzCh, srvDep, srvIdxr)
-	ldrs := services.NewLoaderService(cfg, dmS, iFilterSCh, clsCh, iLoaderSCh, connMgr, anzCh, srvDep, srvIdxr)
-	efs := services.NewExportFailoverService(cfg, connMgr, iEFsCh, clsCh, srvDep, srvIdxr)
-	adminS := services.NewAdminSv1Service(cfg, dmS, sdbS, iFilterSCh, clsCh, iAdminSCh, connMgr, anzCh, srvDep, srvIdxr)
-	sessionS := services.NewSessionService(cfg, dmS, iFilterSCh, clsCh, iSessionSCh, connMgr, anzCh, srvDep, srvIdxr)
-	attrS := services.NewAttributeService(cfg, dmS, cacheS, iFilterSCh, clsCh, iAttributeSCh, anzCh, dspS, srvDep, srvIdxr)
-	chrgS := services.NewChargerService(cfg, dmS, cacheS, iFilterSCh, clsCh, iChargerSCh, connMgr, anzCh, srvDep, srvIdxr)
-	routeS := services.NewRouteService(cfg, dmS, cacheS, iFilterSCh, clsCh, iRouteSCh, connMgr, anzCh, srvDep, srvIdxr)
-	resourceS := services.NewResourceService(cfg, dmS, cacheS, iFilterSCh, clsCh, iResourceSCh, connMgr, anzCh, srvDep, srvIdxr)
-	trendS := services.NewTrendService(cfg, dmS, cacheS, iFilterSCh, clsCh, iTrendSCh, connMgr, anzCh, srvDep, srvIdxr)
-	rankingS := services.NewRankingService(cfg, dmS, cacheS, iFilterSCh, clsCh, iRankingSCh, connMgr, anzCh, srvDep, srvIdxr)
-	thS := services.NewThresholdService(cfg, dmS, cacheS, iFilterSCh, connMgr, clsCh, iThresholdSCh, anzCh, srvDep, srvIdxr)
-	stS := services.NewStatService(cfg, dmS, cacheS, iFilterSCh, clsCh, iStatSCh, connMgr, anzCh, srvDep, srvIdxr)
-	erS := services.NewEventReaderService(cfg, iFilterSCh, connMgr, clsCh, iERsCh, anzCh, srvDep, srvIdxr)
+	anzS := services.NewAnalyzerService(cfg, clsCh, iFilterSCh, anzCh, srvDep, srvIdxr)
+	coreS := services.NewCoreService(cfg, caps, clsCh, anzCh, cpuPrfF, shdWg, srvDep, srvIdxr)
+	cacheS := services.NewCacheService(cfg, dmS, connMgr, clsCh, anzCh, coreS, srvDep, srvIdxr)
+	dspS := services.NewDispatcherService(cfg, dmS, cacheS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	ldrs := services.NewLoaderService(cfg, dmS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	efs := services.NewExportFailoverService(cfg, connMgr, clsCh, srvDep, srvIdxr)
+	adminS := services.NewAdminSv1Service(cfg, dmS, sdbS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	sessionS := services.NewSessionService(cfg, dmS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	attrS := services.NewAttributeService(cfg, dmS, cacheS, iFilterSCh, clsCh, anzCh, dspS, srvDep, srvIdxr)
+	chrgS := services.NewChargerService(cfg, dmS, cacheS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	routeS := services.NewRouteService(cfg, dmS, cacheS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	resourceS := services.NewResourceService(cfg, dmS, cacheS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	trendS := services.NewTrendService(cfg, dmS, cacheS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	rankingS := services.NewRankingService(cfg, dmS, cacheS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	thS := services.NewThresholdService(cfg, dmS, cacheS, iFilterSCh, connMgr, clsCh, anzCh, srvDep, srvIdxr)
+	stS := services.NewStatService(cfg, dmS, cacheS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
+	erS := services.NewEventReaderService(cfg, iFilterSCh, connMgr, clsCh, anzCh, srvDep, srvIdxr)
 	dnsAgent := services.NewDNSAgent(cfg, iFilterSCh, connMgr, srvDep, srvIdxr)
 	fsAgent := services.NewFreeswitchAgent(cfg, connMgr, srvDep, srvIdxr)
 	kamAgent := services.NewKamailioAgent(cfg, connMgr, srvDep, srvIdxr)
@@ -255,12 +203,12 @@ func runCGREngine(fs []string) (err error) {
 	diamAgent := services.NewDiameterAgent(cfg, iFilterSCh, connMgr, caps, srvDep, srvIdxr)
 	httpAgent := services.NewHTTPAgent(cfg, iFilterSCh, clsCh, connMgr, srvDep, srvIdxr)
 	sipAgent := services.NewSIPAgent(cfg, iFilterSCh, connMgr, srvDep, srvIdxr)
-	eeS := services.NewEventExporterService(cfg, iFilterSCh, connMgr, clsCh, iEEsCh, anzCh, srvDep, srvIdxr)
-	cdrS := services.NewCDRServer(cfg, dmS, sdbS, iFilterSCh, clsCh, iCDRServerCh, connMgr, anzCh, srvDep, srvIdxr)
+	eeS := services.NewEventExporterService(cfg, iFilterSCh, connMgr, clsCh, anzCh, srvDep, srvIdxr)
+	cdrS := services.NewCDRServer(cfg, dmS, sdbS, iFilterSCh, clsCh, connMgr, anzCh, srvDep, srvIdxr)
 	registrarcS := services.NewRegistrarCService(cfg, connMgr, srvDep, srvIdxr)
-	rateS := services.NewRateService(cfg, cacheS, iFilterSCh, dmS, clsCh, iRateSCh, anzCh, srvDep, srvIdxr)
-	actionS := services.NewActionService(cfg, dmS, cacheS, iFilterSCh, connMgr, clsCh, iActionSCh, anzCh, srvDep, srvIdxr)
-	accS := services.NewAccountService(cfg, dmS, cacheS, iFilterSCh, connMgr, clsCh, iAccountSCh, anzCh, srvDep, srvIdxr)
+	rateS := services.NewRateService(cfg, cacheS, iFilterSCh, dmS, clsCh, anzCh, srvDep, srvIdxr)
+	actionS := services.NewActionService(cfg, dmS, cacheS, iFilterSCh, connMgr, clsCh, anzCh, srvDep, srvIdxr)
+	accS := services.NewAccountService(cfg, dmS, cacheS, iFilterSCh, connMgr, clsCh, anzCh, srvDep, srvIdxr)
 	tpeS := services.NewTPeService(cfg, connMgr, dmS, clsCh, srvDep, srvIdxr)
 
 	srvManager := servmanager.NewServiceManager(shdWg, connMgr, cfg, srvIdxr, []servmanager.Service{
@@ -403,13 +351,13 @@ func runCGREngine(fs []string) (err error) {
 	cgrInitConfigSv1(iConfigCh, cfg, clsCh, anzS)
 
 	if *flags.Preload != utils.EmptyString {
-		if err = cgrRunPreload(ctx, cfg, *flags.Preload, ldrs); err != nil {
+		if err = cgrRunPreload(ctx, cfg, *flags.Preload, srvIdxr); err != nil {
 			return
 		}
 	}
 
 	// Serve rpc connections
-	cgrStartRPC(ctx, cancel, cfg, clsCh, iDispatcherSCh)
+	cgrStartRPC(ctx, cancel, cfg, clsCh, srvIdxr)
 
 	// TODO: find a better location for this if block
 	if *flags.MemPrfDir != "" {
@@ -429,15 +377,14 @@ func runCGREngine(fs []string) (err error) {
 }
 
 func cgrRunPreload(ctx *context.Context, cfg *config.CGRConfig, loaderIDs string,
-	loader *services.LoaderService) (err error) {
+	sIdxr *servmanager.ServiceIndexer) (err error) {
 	if !cfg.LoaderCfg().Enabled() {
 		err = fmt.Errorf("<%s> not enabled but required by preload mechanism", utils.LoaderS)
 		return
 	}
-	ch := loader.GetRPCChan()
+	loader := sIdxr.GetService(utils.LoaderS).(*services.LoaderService)
 	select {
-	case ldrs := <-ch:
-		ch <- ldrs
+	case <-loader.StateChan(utils.StateServiceUP):
 	case <-ctx.Done():
 		return
 	}
@@ -520,13 +467,12 @@ func cgrInitConfigSv1(iConfigCh chan birpc.ClientConnector,
 }
 
 func cgrStartRPC(ctx *context.Context, shtdwnEngine context.CancelFunc,
-	cfg *config.CGRConfig, clSChan chan *commonlisteners.CommonListenerS, internalDispatcherSChan chan birpc.ClientConnector) {
+	cfg *config.CGRConfig, clSChan chan *commonlisteners.CommonListenerS, sIdxr *servmanager.ServiceIndexer) {
 	cl := <-clSChan
 	clSChan <- cl
 	if cfg.DispatcherSCfg().Enabled { // wait only for dispatcher as cache is allways registered before this
 		select {
-		case dispatcherS := <-internalDispatcherSChan:
-			internalDispatcherSChan <- dispatcherS
+		case <-sIdxr.GetService(utils.DispatcherS).StateChan(utils.StateServiceUP):
 		case <-ctx.Done():
 			return
 		}
diff --git a/services/accounts.go b/services/accounts.go
index 756728539..0bc124810 100644
--- a/services/accounts.go
+++ b/services/accounts.go
@@ -38,11 +38,9 @@ import (
 func NewAccountService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
 	connMgr *engine.ConnManager, clSChan chan *commonlisteners.CommonListenerS,
-	internalChan chan birpc.ClientConnector,
 	anzChan chan *AnalyzerService, srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &AccountService{
-		connChan:    internalChan,
 		cfg:         cfg,
 		dm:          dm,
 		cacheS:      cacheS,
@@ -72,7 +70,6 @@ type AccountService struct {
 
 	rldChan  chan struct{}
 	stopChan chan struct{}
-	connChan chan birpc.ClientConnector // publish the internal Subsystem when available
 	connMgr  *engine.ConnManager
 	cfg      *config.CGRConfig
 	srvDep   map[string]*sync.WaitGroup
@@ -123,7 +120,6 @@ func (acts *AccountService) Start(ctx *context.Context, _ context.CancelFunc) (e
 	}
 
 	acts.intRPCconn = anz.GetInternalCodec(srv, utils.AccountS)
-	acts.connChan <- acts.intRPCconn
 	close(acts.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -140,7 +136,6 @@ func (acts *AccountService) Shutdown() (err error) {
 	close(acts.stopChan)
 	acts.acts.Shutdown()
 	acts.acts = nil
-	<-acts.connChan
 	acts.Unlock()
 	acts.cl.RpcUnregisterName(utils.AccountSv1)
 	return
diff --git a/services/actions.go b/services/actions.go
index b820cd87c..123a567f7 100644
--- a/services/actions.go
+++ b/services/actions.go
@@ -38,11 +38,10 @@ import (
 func NewActionService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
 	connMgr *engine.ConnManager,
-	clSChan chan *commonlisteners.CommonListenerS, internalChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	anzChan chan *AnalyzerService, srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &ActionService{
-		connChan:    internalChan,
 		connMgr:     connMgr,
 		cfg:         cfg,
 		dm:          dm,
@@ -73,10 +72,9 @@ type ActionService struct {
 	rldChan  chan struct{}
 	stopChan chan struct{}
 
-	connChan chan birpc.ClientConnector // publish the internal Subsystem when available
-	connMgr  *engine.ConnManager
-	cfg      *config.CGRConfig
-	srvDep   map[string]*sync.WaitGroup
+	connMgr *engine.ConnManager
+	cfg     *config.CGRConfig
+	srvDep  map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // share the API object implementing API calls for internal
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -124,7 +122,6 @@ func (acts *ActionService) Start(ctx *context.Context, _ context.CancelFunc) (er
 	}
 
 	acts.intRPCconn = anz.GetInternalCodec(srv, utils.ActionS)
-	acts.connChan <- acts.intRPCconn
 	close(acts.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -142,7 +139,6 @@ func (acts *ActionService) Shutdown() (err error) {
 	close(acts.stopChan)
 	acts.acts.Shutdown()
 	acts.acts = nil
-	<-acts.connChan
 	acts.cl.RpcUnregisterName(utils.ActionSv1)
 	return
 }
diff --git a/services/adminsv1.go b/services/adminsv1.go
index 29776bc9a..d5b49b7e2 100644
--- a/services/adminsv1.go
+++ b/services/adminsv1.go
@@ -35,12 +35,10 @@ import (
 func NewAdminSv1Service(cfg *config.CGRConfig,
 	dm *DataDBService, storDB *StorDBService,
 	filterSChan chan *engine.FilterS, clSChan chan *commonlisteners.CommonListenerS,
-	internalAPIerSv1Chan chan birpc.ClientConnector,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &AdminSv1Service{
-		connChan:    internalAPIerSv1Chan,
 		cfg:         cfg,
 		dm:          dm,
 		storDB:      storDB,
@@ -68,7 +66,6 @@ type AdminSv1Service struct {
 	cl  *commonlisteners.CommonListenerS
 
 	stopChan chan struct{}
-	connChan chan birpc.ClientConnector
 	connMgr  *engine.ConnManager
 	cfg      *config.CGRConfig
 	srvDep   map[string]*sync.WaitGroup
@@ -124,7 +121,6 @@ func (apiService *AdminSv1Service) Start(ctx *context.Context, _ context.CancelF
 
 	//backwards compatible
 	apiService.intRPCconn = anz.GetInternalCodec(srv, utils.AdminSv1)
-	apiService.connChan <- apiService.intRPCconn
 	close(apiService.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -139,7 +135,6 @@ func (apiService *AdminSv1Service) Shutdown() (err error) {
 	apiService.Lock()
 	// close(apiService.stopChan)
 	apiService.api = nil
-	<-apiService.connChan
 	apiService.cl.RpcUnregisterName(utils.AdminSv1)
 	apiService.Unlock()
 	return
diff --git a/services/analyzers.go b/services/analyzers.go
index 2f3ec184d..a17f17e2b 100644
--- a/services/analyzers.go
+++ b/services/analyzers.go
@@ -35,12 +35,10 @@ import (
 // NewAnalyzerService returns the Analyzer Service
 func NewAnalyzerService(cfg *config.CGRConfig, clSChan chan *commonlisteners.CommonListenerS,
 	filterSChan chan *engine.FilterS,
-	internalAnalyzerSChan chan birpc.ClientConnector,
 	anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) *AnalyzerService {
 	return &AnalyzerService{
-		connChan:    internalAnalyzerSChan,
 		cfg:         cfg,
 		clSChan:     clSChan,
 		filterSChan: filterSChan,
@@ -63,7 +61,6 @@ type AnalyzerService struct {
 	cl  *commonlisteners.CommonListenerS
 
 	cancelFunc context.CancelFunc
-	connChan   chan birpc.ClientConnector
 	cfg        *config.CGRConfig
 	srvDep     map[string]*sync.WaitGroup
 
@@ -106,7 +103,6 @@ func (anz *AnalyzerService) Start(ctx *context.Context, shtDwn context.CancelFun
 func (anz *AnalyzerService) start(ctx *context.Context) {
 	fS, err := waitForFilterS(ctx, anz.filterSChan)
 	if err != nil {
-		anz.connChan <- nil
 		return
 	}
 
@@ -124,7 +120,6 @@ func (anz *AnalyzerService) start(ctx *context.Context) {
 		}
 	}
 	anz.Unlock()
-	anz.connChan <- anz.GetInternalCodec(srv, utils.AnalyzerS)
 }
 
 // Reload handles the change of config
@@ -145,7 +140,6 @@ func (anz *AnalyzerService) Shutdown() (err error) {
 	anz.anzChan = nil
 	anz.anz.Shutdown()
 	anz.anz = nil
-	<-anz.connChan
 	anz.Unlock()
 	anz.cl.RpcUnregisterName(utils.AnalyzerSv1)
 	return
diff --git a/services/attributes.go b/services/attributes.go
index a881316c2..0803a197c 100644
--- a/services/attributes.go
+++ b/services/attributes.go
@@ -35,11 +35,10 @@ import (
 // NewAttributeService returns the Attribute Service
 func NewAttributeService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
-	clSChan chan *commonlisteners.CommonListenerS, internalChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	anzChan chan *AnalyzerService, dspS *DispatcherService,
 	srvDep map[string]*sync.WaitGroup, sIndxr *servmanager.ServiceIndexer) servmanager.Service {
 	return &AttributeService{
-		connChan:       internalChan,
 		cfg:            cfg,
 		dm:             dm,
 		cacheS:         cacheS,
@@ -68,9 +67,8 @@ type AttributeService struct {
 	cl    *commonlisteners.CommonListenerS
 	rpc   *apis.AttributeSv1 // useful on restart
 
-	connChan chan birpc.ClientConnector // publish the internal Subsystem when available
-	cfg      *config.CGRConfig
-	srvDep   map[string]*sync.WaitGroup
+	cfg    *config.CGRConfig
+	srvDep map[string]*sync.WaitGroup
 
 	intRPCconn     birpc.ClientConnector       // expose API methods over internal connection
 	serviceIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -131,7 +129,6 @@ func (attrS *AttributeService) Start(ctx *context.Context, _ context.CancelFunc)
 	}()
 
 	attrS.intRPCconn = anz.GetInternalCodec(srv, utils.AttributeS)
-	attrS.connChan <- attrS.intRPCconn
 	close(attrS.stateDeps.StateChan(utils.StateServiceUP)) // inform listeners about the service reaching UP state
 	return
 }
@@ -147,7 +144,6 @@ func (attrS *AttributeService) Shutdown() (err error) {
 	attrS.attrS.Shutdown()
 	attrS.attrS = nil
 	attrS.rpc = nil
-	<-attrS.connChan
 	attrS.cl.RpcUnregisterName(utils.AttributeSv1)
 	attrS.dspS.UnregisterShutdownChan(attrS.ServiceName())
 	attrS.Unlock()
diff --git a/services/caches.go b/services/caches.go
index a17ce552e..04247bb51 100644
--- a/services/caches.go
+++ b/services/caches.go
@@ -33,7 +33,7 @@ import (
 
 // NewCacheService .
 func NewCacheService(cfg *config.CGRConfig, dm *DataDBService, connMgr *engine.ConnManager,
-	clSChan chan *commonlisteners.CommonListenerS, internalChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	anzChan chan *AnalyzerService, // dspS *DispatcherService,
 	cores *CoreService,
 	srvDep map[string]*sync.WaitGroup,
@@ -46,7 +46,6 @@ func NewCacheService(cfg *config.CGRConfig, dm *DataDBService, connMgr *engine.C
 		clSChan:    clSChan,
 		dm:         dm,
 		connMgr:    connMgr,
-		rpc:        internalChan,
 		cacheCh:    make(chan *engine.CacheS, 1),
 		srvIndexer: srvIndexer,
 		stateDeps:  NewStateDependencies([]string{utils.StateServiceUP}),
@@ -63,7 +62,6 @@ type CacheService struct {
 	cl *commonlisteners.CommonListenerS
 
 	cacheCh chan *engine.CacheS
-	rpc     chan birpc.ClientConnector
 	connMgr *engine.ConnManager
 	cfg     *config.CGRConfig
 	srvDep  map[string]*sync.WaitGroup
@@ -101,7 +99,6 @@ func (cS *CacheService) Start(ctx *context.Context, shtDw context.CancelFunc) (e
 		}
 	}
 	cS.intRPCconn = anz.GetInternalCodec(srv, utils.CacheS)
-	cS.rpc <- cS.intRPCconn
 	close(cS.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
diff --git a/services/cdrs.go b/services/cdrs.go
index 11fb1995d..635446689 100644
--- a/services/cdrs.go
+++ b/services/cdrs.go
@@ -36,12 +36,11 @@ import (
 // NewCDRServer returns the CDR Server
 func NewCDRServer(cfg *config.CGRConfig, dm *DataDBService,
 	storDB *StorDBService, filterSChan chan *engine.FilterS,
-	clSChan chan *commonlisteners.CommonListenerS, internalCDRServerChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &CDRService{
-		connChan:    internalCDRServerChan,
 		cfg:         cfg,
 		dm:          dm,
 		storDB:      storDB,
@@ -68,7 +67,6 @@ type CDRService struct {
 	cdrS *cdrs.CDRServer
 	cl   *commonlisteners.CommonListenerS
 
-	connChan chan birpc.ClientConnector
 	stopChan chan struct{}
 	connMgr  *engine.ConnManager
 	cfg      *config.CGRConfig
@@ -120,7 +118,6 @@ func (cs *CDRService) Start(ctx *context.Context, _ context.CancelFunc) (err err
 	}
 
 	cs.intRPCconn = anz.GetInternalCodec(srv, utils.CDRServer)
-	cs.connChan <- cs.intRPCconn // Signal that cdrS is operational
 	close(cs.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -135,7 +132,6 @@ func (cs *CDRService) Shutdown() (err error) {
 	cs.Lock()
 	close(cs.stopChan)
 	cs.cdrS = nil
-	<-cs.connChan
 	cs.Unlock()
 	cs.cl.RpcUnregisterName(utils.CDRsV1)
 	return
diff --git a/services/chargers.go b/services/chargers.go
index 9d01f5b7c..4c01429a2 100644
--- a/services/chargers.go
+++ b/services/chargers.go
@@ -35,11 +35,10 @@ import (
 // NewChargerService returns the Charger Service
 func NewChargerService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS, clSChan chan *commonlisteners.CommonListenerS,
-	internalChargerSChan chan birpc.ClientConnector, connMgr *engine.ConnManager,
+	connMgr *engine.ConnManager,
 	anzChan chan *AnalyzerService, srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &ChargerService{
-		connChan:    internalChargerSChan,
 		cfg:         cfg,
 		dm:          dm,
 		cacheS:      cacheS,
@@ -66,10 +65,9 @@ type ChargerService struct {
 	chrS *engine.ChargerS
 	cl   *commonlisteners.CommonListenerS
 
-	connChan chan birpc.ClientConnector
-	connMgr  *engine.ConnManager
-	cfg      *config.CGRConfig
-	srvDep   map[string]*sync.WaitGroup
+	connMgr *engine.ConnManager
+	cfg     *config.CGRConfig
+	srvDep  map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -113,7 +111,6 @@ func (chrS *ChargerService) Start(ctx *context.Context, _ context.CancelFunc) (e
 	}
 
 	chrS.intRPCconn = anz.GetInternalCodec(srv, utils.ChargerS)
-	chrS.connChan <- chrS.intRPCconn
 	close(chrS.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -129,7 +126,6 @@ func (chrS *ChargerService) Shutdown() (err error) {
 	defer chrS.Unlock()
 	chrS.chrS.Shutdown()
 	chrS.chrS = nil
-	<-chrS.connChan
 	chrS.cl.RpcUnregisterName(utils.ChargerSv1)
 	return
 }
diff --git a/services/cores.go b/services/cores.go
index d10380970..1a42c47f8 100644
--- a/services/cores.go
+++ b/services/cores.go
@@ -35,13 +35,12 @@ import (
 
 // NewCoreService returns the Core Service
 func NewCoreService(cfg *config.CGRConfig, caps *engine.Caps, clSChan chan *commonlisteners.CommonListenerS,
-	internalCoreSChan chan birpc.ClientConnector, anzChan chan *AnalyzerService,
+	anzChan chan *AnalyzerService,
 	fileCPU *os.File, shdWg *sync.WaitGroup,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) *CoreService {
 	return &CoreService{
 		shdWg:      shdWg,
-		connChan:   internalCoreSChan,
 		cfg:        cfg,
 		caps:       caps,
 		fileCPU:    fileCPU,
@@ -69,7 +68,6 @@ type CoreService struct {
 	csCh     chan *cores.CoreS
 	stopChan chan struct{}
 	shdWg    *sync.WaitGroup
-	connChan chan birpc.ClientConnector
 	cfg      *config.CGRConfig
 	srvDep   map[string]*sync.WaitGroup
 
@@ -106,7 +104,6 @@ func (cS *CoreService) Start(ctx *context.Context, shtDw context.CancelFunc) err
 	}
 
 	cS.intRPCconn = anz.GetInternalCodec(srv, utils.CoreS)
-	cS.connChan <- cS.intRPCconn
 	close(cS.stateDeps.StateChan(utils.StateServiceUP))
 	return nil
 }
@@ -125,7 +122,6 @@ func (cS *CoreService) Shutdown() error {
 	cS.cS.StopCPUProfiling()
 	cS.cS.StopMemoryProfiling()
 	cS.cS = nil
-	<-cS.connChan
 	<-cS.csCh
 	cS.cl.RpcUnregisterName(utils.CoreSv1)
 	return nil
diff --git a/services/dispatchers.go b/services/dispatchers.go
index fe382282e..6ec37d9d1 100644
--- a/services/dispatchers.go
+++ b/services/dispatchers.go
@@ -34,12 +34,11 @@ import (
 // NewDispatcherService returns the Dispatcher Service
 func NewDispatcherService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
-	clSChan chan *commonlisteners.CommonListenerS, internalChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) *DispatcherService {
 	return &DispatcherService{
-		connChan:    internalChan,
 		cfg:         cfg,
 		dm:          dm,
 		cacheS:      cacheS,
@@ -67,7 +66,6 @@ type DispatcherService struct {
 	dspS *dispatchers.DispatcherService
 	cl   *commonlisteners.CommonListenerS
 
-	connChan   chan birpc.ClientConnector
 	connMgr    *engine.ConnManager
 	cfg        *config.CGRConfig
 	srvsReload map[string]chan struct{}
@@ -120,7 +118,6 @@ func (dspS *DispatcherService) Start(ctx *context.Context, _ context.CancelFunc)
 	// until we figured out a better sollution in case of gob server
 	// dspS.server.SetDispatched()
 	dspS.intRPCconn = anz.GetInternalCodec(srv, utils.DispatcherS)
-	dspS.connChan <- dspS.intRPCconn
 	close(dspS.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -136,7 +133,6 @@ func (dspS *DispatcherService) Shutdown() (err error) {
 	defer dspS.Unlock()
 	dspS.dspS.Shutdown()
 	dspS.dspS = nil
-	<-dspS.connChan
 	dspS.cl.RpcUnregisterName(utils.DispatcherSv1)
 	dspS.cl.RpcUnregisterName(utils.AttributeSv1)
 
diff --git a/services/ees.go b/services/ees.go
index 683b4ccd6..f7ba8e7f7 100644
--- a/services/ees.go
+++ b/services/ees.go
@@ -34,7 +34,7 @@ import (
 
 // NewEventExporterService constructs EventExporterService
 func NewEventExporterService(cfg *config.CGRConfig, filterSChan chan *engine.FilterS,
-	connMgr *engine.ConnManager, clSChan chan *commonlisteners.CommonListenerS, intConnChan chan birpc.ClientConnector,
+	connMgr *engine.ConnManager, clSChan chan *commonlisteners.CommonListenerS,
 	anzChan chan *AnalyzerService, srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &EventExporterService{
@@ -42,7 +42,6 @@ func NewEventExporterService(cfg *config.CGRConfig, filterSChan chan *engine.Fil
 		filterSChan: filterSChan,
 		connMgr:     connMgr,
 		clSChan:     clSChan,
-		intConnChan: intConnChan,
 		anzChan:     anzChan,
 		srvDep:      srvDep,
 		srvIndexer:  srvIndexer,
@@ -61,10 +60,9 @@ type EventExporterService struct {
 	eeS *ees.EeS
 	cl  *commonlisteners.CommonListenerS
 
-	intConnChan chan birpc.ClientConnector
-	connMgr     *engine.ConnManager
-	cfg         *config.CGRConfig
-	srvDep      map[string]*sync.WaitGroup
+	connMgr *engine.ConnManager
+	cfg     *config.CGRConfig
+	srvDep  map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -103,7 +101,6 @@ func (es *EventExporterService) Shutdown() error {
 	utils.Logger.Info(fmt.Sprintf("<%s> shutdown <%s>", utils.CoreS, utils.EEs))
 	es.eeS.ClearExporterCache()
 	es.eeS = nil
-	<-es.intConnChan
 	es.cl.RpcUnregisterName(utils.EeSv1)
 	return nil
 }
@@ -140,7 +137,6 @@ func (es *EventExporterService) Start(ctx *context.Context, _ context.CancelFunc
 	}
 
 	es.intRPCconn = anz.GetInternalCodec(srv, utils.EEs)
-	es.intConnChan <- es.intRPCconn
 	close(es.stateDeps.StateChan(utils.StateServiceUP))
 	return nil
 }
diff --git a/services/efs.go b/services/efs.go
index 7534a9c57..c8c86b39a 100644
--- a/services/efs.go
+++ b/services/efs.go
@@ -43,11 +43,10 @@ type ExportFailoverService struct {
 	cl  *commonlisteners.CommonListenerS
 	srv *birpc.Service
 
-	stopChan    chan struct{}
-	intConnChan chan birpc.ClientConnector
-	connMgr     *engine.ConnManager
-	cfg         *config.CGRConfig
-	srvDep      map[string]*sync.WaitGroup
+	stopChan chan struct{}
+	connMgr  *engine.ConnManager
+	cfg      *config.CGRConfig
+	srvDep   map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -56,18 +55,16 @@ type ExportFailoverService struct {
 
 // NewExportFailoverService is the constructor for the TpeService
 func NewExportFailoverService(cfg *config.CGRConfig, connMgr *engine.ConnManager,
-	intConnChan chan birpc.ClientConnector,
 	clSChan chan *commonlisteners.CommonListenerS,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) *ExportFailoverService {
 	return &ExportFailoverService{
-		cfg:         cfg,
-		clSChan:     clSChan,
-		connMgr:     connMgr,
-		intConnChan: intConnChan,
-		srvDep:      srvDep,
-		srvIndexer:  srvIndexer,
-		stateDeps:   NewStateDependencies([]string{utils.StateServiceUP}),
+		cfg:        cfg,
+		clSChan:    clSChan,
+		connMgr:    connMgr,
+		srvDep:     srvDep,
+		srvIndexer: srvIndexer,
+		stateDeps:  NewStateDependencies([]string{utils.StateServiceUP}),
 	}
 }
 
diff --git a/services/ers.go b/services/ers.go
index d819d8fc2..2427fce0e 100644
--- a/services/ers.go
+++ b/services/ers.go
@@ -38,7 +38,6 @@ func NewEventReaderService(
 	filterSChan chan *engine.FilterS,
 	connMgr *engine.ConnManager,
 	clSChan chan *commonlisteners.CommonListenerS,
-	intConn chan birpc.ClientConnector,
 	anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
@@ -48,7 +47,6 @@ func NewEventReaderService(
 		filterSChan: filterSChan,
 		connMgr:     connMgr,
 		clSChan:     clSChan,
-		intConn:     intConn,
 		anzChan:     anzChan,
 		srvDep:      srvDep,
 		srvIndexer:  srvIndexer,
@@ -69,7 +67,6 @@ type EventReaderService struct {
 
 	rldChan  chan struct{}
 	stopChan chan struct{}
-	intConn  chan birpc.ClientConnector
 	connMgr  *engine.ConnManager
 	cfg      *config.CGRConfig
 	srvDep   map[string]*sync.WaitGroup
@@ -114,7 +111,6 @@ func (erS *EventReaderService) Start(ctx *context.Context, shtDwn context.Cancel
 		erS.cl.RpcRegister(srv)
 	}
 	erS.intRPCconn = anz.GetInternalCodec(srv, utils.ERs)
-	erS.intConn <- erS.intRPCconn
 	close(erS.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
diff --git a/services/loaders.go b/services/loaders.go
index 357cd5685..30fe0073b 100644
--- a/services/loaders.go
+++ b/services/loaders.go
@@ -35,12 +35,10 @@ import (
 // NewLoaderService returns the Loader Service
 func NewLoaderService(cfg *config.CGRConfig, dm *DataDBService,
 	filterSChan chan *engine.FilterS, clSChan chan *commonlisteners.CommonListenerS,
-	internalLoaderSChan chan birpc.ClientConnector,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) *LoaderService {
 	return &LoaderService{
-		connChan:    internalLoaderSChan,
 		cfg:         cfg,
 		dm:          dm,
 		filterSChan: filterSChan,
@@ -67,7 +65,6 @@ type LoaderService struct {
 	cl   *commonlisteners.CommonListenerS
 
 	stopChan chan struct{}
-	connChan chan birpc.ClientConnector
 	connMgr  *engine.ConnManager
 	cfg      *config.CGRConfig
 	srvDep   map[string]*sync.WaitGroup
@@ -115,7 +112,6 @@ func (ldrs *LoaderService) Start(ctx *context.Context, _ context.CancelFunc) (er
 		}
 	}
 	ldrs.intRPCconn = anz.GetInternalCodec(srv, utils.LoaderS)
-	ldrs.connChan <- ldrs.intRPCconn
 	close(ldrs.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -145,7 +141,6 @@ func (ldrs *LoaderService) Shutdown() (_ error) {
 	ldrs.Lock()
 	ldrs.ldrs = nil
 	close(ldrs.stopChan)
-	<-ldrs.connChan
 	ldrs.cl.RpcUnregisterName(utils.LoaderSv1)
 	ldrs.Unlock()
 	return
@@ -173,11 +168,6 @@ func (ldrs *LoaderService) GetLoaderS() *loaders.LoaderS {
 	return ldrs.ldrs
 }
 
-// GetRPCChan returns the conn chan
-func (ldrs *LoaderService) GetRPCChan() chan birpc.ClientConnector {
-	return ldrs.connChan
-}
-
 // StateChan returns signaling channel of specific state
 func (ldrs *LoaderService) StateChan(stateID string) chan struct{} {
 	return ldrs.stateDeps.StateChan(stateID)
diff --git a/services/rankings.go b/services/rankings.go
index 50549a76b..4e335fe64 100644
--- a/services/rankings.go
+++ b/services/rankings.go
@@ -35,12 +35,11 @@ import (
 // NewRankingService returns the RankingS Service
 func NewRankingService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
-	clSChan chan *commonlisteners.CommonListenerS, internalRankingSChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &RankingService{
-		connChan:    internalRankingSChan,
 		cfg:         cfg,
 		dm:          dm,
 		cacheS:      cacheS,
@@ -66,10 +65,9 @@ type RankingService struct {
 	ran *engine.RankingS
 	cl  *commonlisteners.CommonListenerS
 
-	connChan chan birpc.ClientConnector
-	connMgr  *engine.ConnManager
-	cfg      *config.CGRConfig
-	srvDep   map[string]*sync.WaitGroup
+	connMgr *engine.ConnManager
+	cfg     *config.CGRConfig
+	srvDep  map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -121,7 +119,6 @@ func (ran *RankingService) Start(ctx *context.Context, _ context.CancelFunc) (er
 		}
 	}
 	ran.intRPCconn = anz.GetInternalCodec(srv, utils.RankingS)
-	ran.connChan <- ran.intRPCconn
 	close(ran.stateDeps.StateChan(utils.StateServiceUP))
 	return nil
 }
@@ -141,7 +138,6 @@ func (ran *RankingService) Shutdown() (err error) {
 	defer ran.Unlock()
 	ran.ran.StopRankingS()
 	ran.ran = nil
-	<-ran.connChan
 	ran.cl.RpcUnregisterName(utils.RankingSv1)
 	return
 }
diff --git a/services/rates.go b/services/rates.go
index b3817aca2..25d7562b8 100644
--- a/services/rates.go
+++ b/services/rates.go
@@ -35,7 +35,7 @@ import (
 func NewRateService(cfg *config.CGRConfig,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
 	dmS *DataDBService, clSChan chan *commonlisteners.CommonListenerS,
-	intConnChan chan birpc.ClientConnector, anzChan chan *AnalyzerService,
+	anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &RateService{
@@ -44,7 +44,6 @@ func NewRateService(cfg *config.CGRConfig,
 		filterSChan: filterSChan,
 		dmS:         dmS,
 		clSChan:     clSChan,
-		intConnChan: intConnChan,
 		rldChan:     make(chan struct{}),
 		anzChan:     anzChan,
 		srvDep:      srvDep,
@@ -66,11 +65,10 @@ type RateService struct {
 	rateS *rates.RateS
 	cl    *commonlisteners.CommonListenerS
 
-	rldChan     chan struct{}
-	stopChan    chan struct{}
-	intConnChan chan birpc.ClientConnector
-	cfg         *config.CGRConfig
-	srvDep      map[string]*sync.WaitGroup
+	rldChan  chan struct{}
+	stopChan chan struct{}
+	cfg      *config.CGRConfig
+	srvDep   map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -107,7 +105,6 @@ func (rs *RateService) Shutdown() (err error) {
 	close(rs.stopChan)
 	rs.rateS.Shutdown() //we don't verify the error because shutdown never returns an err
 	rs.rateS = nil
-	<-rs.intConnChan
 	rs.cl.RpcUnregisterName(utils.RateSv1)
 	return
 }
@@ -154,7 +151,6 @@ func (rs *RateService) Start(ctx *context.Context, _ context.CancelFunc) (err er
 	}
 
 	rs.intRPCconn = anz.GetInternalCodec(srv, utils.RateS)
-	rs.intConnChan <- rs.intRPCconn
 	close(rs.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
diff --git a/services/resources.go b/services/resources.go
index 9cc12798d..d512ac7ad 100644
--- a/services/resources.go
+++ b/services/resources.go
@@ -34,12 +34,11 @@ import (
 // NewResourceService returns the Resource Service
 func NewResourceService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
-	clSChan chan *commonlisteners.CommonListenerS, internalResourceSChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &ResourceService{
-		connChan:    internalResourceSChan,
 		cfg:         cfg,
 		dm:          dm,
 		cacheS:      cacheS,
@@ -66,10 +65,9 @@ type ResourceService struct {
 	reS *engine.ResourceS
 	cl  *commonlisteners.CommonListenerS
 
-	connChan chan birpc.ClientConnector
-	connMgr  *engine.ConnManager
-	cfg      *config.CGRConfig
-	srvDep   map[string]*sync.WaitGroup
+	connMgr *engine.ConnManager
+	cfg     *config.CGRConfig
+	srvDep  map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -116,7 +114,6 @@ func (reS *ResourceService) Start(ctx *context.Context, _ context.CancelFunc) (e
 	}
 
 	reS.intRPCconn = anz.GetInternalCodec(srv, utils.ResourceS)
-	reS.connChan <- reS.intRPCconn
 	close(reS.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -136,7 +133,6 @@ func (reS *ResourceService) Shutdown() (err error) {
 	defer reS.Unlock()
 	reS.reS.Shutdown(context.TODO()) //we don't verify the error because shutdown never returns an error
 	reS.reS = nil
-	<-reS.connChan
 	reS.cl.RpcUnregisterName(utils.ResourceSv1)
 	return
 }
diff --git a/services/routes.go b/services/routes.go
index 84cdd374f..6a8295160 100644
--- a/services/routes.go
+++ b/services/routes.go
@@ -35,12 +35,11 @@ import (
 // NewRouteService returns the Route Service
 func NewRouteService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
-	clSChan chan *commonlisteners.CommonListenerS, internalRouteSChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &RouteService{
-		connChan:    internalRouteSChan,
 		cfg:         cfg,
 		dm:          dm,
 		cacheS:      cacheS,
@@ -67,10 +66,9 @@ type RouteService struct {
 	routeS *engine.RouteS
 	cl     *commonlisteners.CommonListenerS
 
-	connChan chan birpc.ClientConnector
-	connMgr  *engine.ConnManager
-	cfg      *config.CGRConfig
-	srvDep   map[string]*sync.WaitGroup
+	connMgr *engine.ConnManager
+	cfg     *config.CGRConfig
+	srvDep  map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -114,7 +112,6 @@ func (routeS *RouteService) Start(ctx *context.Context, _ context.CancelFunc) (e
 		}
 	}
 	routeS.intRPCconn = anz.GetInternalCodec(srv, utils.RouteS)
-	routeS.connChan <- routeS.intRPCconn
 	close(routeS.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -130,7 +127,6 @@ func (routeS *RouteService) Shutdown() (err error) {
 	defer routeS.Unlock()
 	routeS.routeS.Shutdown() //we don't verify the error because shutdown never returns an error
 	routeS.routeS = nil
-	<-routeS.connChan
 	routeS.cl.RpcUnregisterName(utils.RouteSv1)
 	return
 }
diff --git a/services/sessions.go b/services/sessions.go
index 1e464ec0e..86163fa0f 100644
--- a/services/sessions.go
+++ b/services/sessions.go
@@ -36,12 +36,11 @@ import (
 
 // NewSessionService returns the Session Service
 func NewSessionService(cfg *config.CGRConfig, dm *DataDBService, filterSChan chan *engine.FilterS,
-	clSChan chan *commonlisteners.CommonListenerS, internalChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &SessionService{
-		connChan:    internalChan,
 		cfg:         cfg,
 		dm:          dm,
 		filterSChan: filterSChan,
@@ -68,7 +67,6 @@ type SessionService struct {
 
 	bircpEnabled bool // to stop birpc server if needed
 	stopChan     chan struct{}
-	connChan     chan birpc.ClientConnector
 	connMgr      *engine.ConnManager
 	cfg          *config.CGRConfig
 	srvDep       map[string]*sync.WaitGroup
@@ -114,7 +112,6 @@ func (smg *SessionService) Start(ctx *context.Context, shtDw context.CancelFunc)
 			smg.cl.RpcRegister(s)
 		}
 	}
-	smg.connChan <- anz.GetInternalCodec(srv, utils.SessionS)
 	// Register BiRpc handlers
 	if smg.cfg.SessionSCfg().ListenBijson != utils.EmptyString {
 		smg.bircpEnabled = true
@@ -158,7 +155,6 @@ func (smg *SessionService) Shutdown() (err error) {
 		smg.bircpEnabled = false
 	}
 	smg.sm = nil
-	<-smg.connChan
 	smg.cl.RpcUnregisterName(utils.SessionSv1)
 	// smg.server.BiRPCUnregisterName(utils.SessionSv1)
 	return
diff --git a/services/stats.go b/services/stats.go
index 6419e6e4b..06b613347 100644
--- a/services/stats.go
+++ b/services/stats.go
@@ -34,12 +34,11 @@ import (
 // NewStatService returns the Stat Service
 func NewStatService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
-	clSChan chan *commonlisteners.CommonListenerS, internalStatSChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &StatService{
-		connChan:    internalStatSChan,
 		cfg:         cfg,
 		dm:          dm,
 		cacheS:      cacheS,
@@ -66,10 +65,9 @@ type StatService struct {
 	sts *engine.StatS
 	cl  *commonlisteners.CommonListenerS
 
-	connChan chan birpc.ClientConnector
-	connMgr  *engine.ConnManager
-	cfg      *config.CGRConfig
-	srvDep   map[string]*sync.WaitGroup
+	connMgr *engine.ConnManager
+	cfg     *config.CGRConfig
+	srvDep  map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -117,7 +115,6 @@ func (sts *StatService) Start(ctx *context.Context, _ context.CancelFunc) (err e
 		}
 	}
 	sts.intRPCconn = anz.GetInternalCodec(srv, utils.StatS)
-	sts.connChan <- sts.intRPCconn
 	close(sts.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -137,7 +134,6 @@ func (sts *StatService) Shutdown() (err error) {
 	defer sts.Unlock()
 	sts.sts.Shutdown(context.TODO())
 	sts.sts = nil
-	<-sts.connChan
 	sts.cl.RpcUnregisterName(utils.StatSv1)
 	return
 }
diff --git a/services/thresholds.go b/services/thresholds.go
index 546c2814c..279c01eb7 100644
--- a/services/thresholds.go
+++ b/services/thresholds.go
@@ -35,11 +35,10 @@ import (
 func NewThresholdService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
 	connMgr *engine.ConnManager,
-	clSChan chan *commonlisteners.CommonListenerS, internalThresholdSChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	anzChan chan *AnalyzerService, srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &ThresholdService{
-		connChan:    internalThresholdSChan,
 		cfg:         cfg,
 		dm:          dm,
 		cacheS:      cacheS,
@@ -66,10 +65,9 @@ type ThresholdService struct {
 	thrs *engine.ThresholdS
 	cl   *commonlisteners.CommonListenerS
 
-	connChan chan birpc.ClientConnector
-	connMgr  *engine.ConnManager
-	cfg      *config.CGRConfig
-	srvDep   map[string]*sync.WaitGroup
+	connMgr *engine.ConnManager
+	cfg     *config.CGRConfig
+	srvDep  map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -116,7 +114,6 @@ func (thrs *ThresholdService) Start(ctx *context.Context, _ context.CancelFunc)
 		}
 	}
 	thrs.intRPCconn = anz.GetInternalCodec(srv, utils.ThresholdS)
-	thrs.connChan <- thrs.intRPCconn
 	close(thrs.stateDeps.StateChan(utils.StateServiceUP))
 	return
 }
@@ -136,7 +133,6 @@ func (thrs *ThresholdService) Shutdown() (_ error) {
 	defer thrs.Unlock()
 	thrs.thrs.Shutdown(context.TODO())
 	thrs.thrs = nil
-	<-thrs.connChan
 	thrs.cl.RpcUnregisterName(utils.ThresholdSv1)
 	return
 }
diff --git a/services/trends.go b/services/trends.go
index b67dd2838..41baf00f3 100644
--- a/services/trends.go
+++ b/services/trends.go
@@ -34,12 +34,11 @@ import (
 // NewTrendsService returns the TrendS Service
 func NewTrendService(cfg *config.CGRConfig, dm *DataDBService,
 	cacheS *CacheService, filterSChan chan *engine.FilterS,
-	clSChan chan *commonlisteners.CommonListenerS, internalTrendSChan chan birpc.ClientConnector,
+	clSChan chan *commonlisteners.CommonListenerS,
 	connMgr *engine.ConnManager, anzChan chan *AnalyzerService,
 	srvDep map[string]*sync.WaitGroup,
 	srvIndexer *servmanager.ServiceIndexer) servmanager.Service {
 	return &TrendService{
-		connChan:    internalTrendSChan,
 		cfg:         cfg,
 		dm:          dm,
 		cacheS:      cacheS,
@@ -65,10 +64,9 @@ type TrendService struct {
 	trs *engine.TrendS
 	cl  *commonlisteners.CommonListenerS
 
-	connChan chan birpc.ClientConnector
-	connMgr  *engine.ConnManager
-	cfg      *config.CGRConfig
-	srvDep   map[string]*sync.WaitGroup
+	connMgr *engine.ConnManager
+	cfg     *config.CGRConfig
+	srvDep  map[string]*sync.WaitGroup
 
 	intRPCconn birpc.ClientConnector       // expose API methods over internal connection
 	srvIndexer *servmanager.ServiceIndexer // access directly services from here
@@ -118,7 +116,6 @@ func (trs *TrendService) Start(ctx *context.Context, _ context.CancelFunc) (err
 		}
 	}
 	trs.intRPCconn = anz.GetInternalCodec(srv, utils.Trends)
-	trs.connChan <- trs.intRPCconn
 	close(trs.stateDeps.StateChan(utils.StateServiceUP))
 	return nil
 }
@@ -138,7 +135,6 @@ func (trs *TrendService) Shutdown() (err error) {
 	defer trs.Unlock()
 	trs.trs.StopTrendS()
 	trs.trs = nil
-	<-trs.connChan
 	trs.cl.RpcUnregisterName(utils.TrendSv1)
 	return
 }