diff --git a/agents/diam_conn_stats_test.go b/agents/diam_conn_stats_test.go
index 128f36813..fdbe8c059 100644
--- a/agents/diam_conn_stats_test.go
+++ b/agents/diam_conn_stats_test.go
@@ -60,7 +60,7 @@ func TestDiamConnStats(t *testing.T) {
 "stats": {
 	"enabled": true,
 	"store_interval": "-1",
-	"string_indexed_fields": ["*req.OriginHost"]
+	"string_indexed_fields": ["*opts.*eventType"]
 },
 "thresholds": {
 	"enabled": true,
@@ -83,27 +83,32 @@ func TestDiamConnStats(t *testing.T) {
 		// LogBuffer:        &bytes.Buffer{},
 		GracefulShutdown: true,
 	}
-	// defer fmt.Println(ng.LogBuffer)
+	// t.Cleanup(func() {
+	// 	fmt.Println(ng.LogBuffer)
+	// })
 	client, cfg := ng.Run(t)
 
 	setSQProfile := func(id, originHost, originRealm string, ttl time.Duration) {
 		t.Helper()
+		fltrIDs := []string{"*string:~*opts.*eventType:ConnectionStatusReport"}
+		if originHost != "" {
+			fltrIDs = append(fltrIDs, fmt.Sprintf("*string:~*req.OriginHost:%s", originHost))
+		}
+		if originRealm != "" {
+			fltrIDs = append(fltrIDs, fmt.Sprintf("*string:~*req.OriginRealm:%s", originRealm))
+		}
 		var reply string
 		if err := client.Call(context.Background(), utils.AdminSv1SetStatQueueProfile,
 			engine.StatQueueProfileWithAPIOpts{
 				StatQueueProfile: &engine.StatQueueProfile{
-					Tenant: "cgrates.org",
-					ID:     id,
-					FilterIDs: []string{
-						"*string:~*opts.*eventType:ConnectionStatusReport",
-						fmt.Sprintf("*string:~*req.OriginHost:%s", originHost),
-						fmt.Sprintf("*string:~*req.OriginRealm:%s", originRealm),
-					},
+					Tenant:      "cgrates.org",
+					ID:          id,
+					FilterIDs:   fltrIDs,
 					QueueLength: -1,
 					TTL:         ttl,
 					Metrics: []*engine.MetricWithFilters{
 						{
-							MetricID: "*sum#~*req.ConnectionStatus",
+							MetricID: "*sum#~*req.ConnectionStatus{*conn_status}",
 						},
 					},
 					Stored:   true,
@@ -162,7 +167,7 @@ func TestDiamConnStats(t *testing.T) {
 		if err != nil {
 			t.Error(err)
 		}
-		metricID := "*sum#~*req.ConnectionStatus"
+		metricID := "*sum#~*req.ConnectionStatus{*conn_status}"
 		got, ok := metrics[metricID]
 		if !ok {
 			t.Errorf("could not find metric %q", metricID)
@@ -172,11 +177,13 @@ func TestDiamConnStats(t *testing.T) {
 		}
 	}
 
+	setSQProfile("SQ_CONN_ALL", "", "", -1)
 	setSQProfile("SQ_CONN_1", "host1", "realm1", -1)
 	setSQProfile("SQ_CONN_2", "host2", "realm1", -1)
 	setSQProfile("SQ_CONN_3", "host3", "realm2", -1)
 
 	// no connections have been established yet, expect -1
+	checkConnStatusMetric("SQ_CONN_ALL", -1)
 	checkConnStatusMetric("SQ_CONN_1", -1)
 	checkConnStatusMetric("SQ_CONN_2", -1)
 	checkConnStatusMetric("SQ_CONN_3", -1)
@@ -186,6 +193,8 @@ func TestDiamConnStats(t *testing.T) {
 	connHost1 := initDiamConn("host1", "realm1")
 	connHost2 := initDiamConn("host2", "realm1")
 	connHost3 := initDiamConn("host3", "realm2")
+	time.Sleep(10 * time.Millisecond) // wait for stats to process
+	checkConnStatusMetric("SQ_CONN_ALL", 3)
 	checkConnStatusMetric("SQ_CONN_1", 1)
 	checkConnStatusMetric("SQ_CONN_2", 1)
 	checkConnStatusMetric("SQ_CONN_3", 1)
@@ -199,6 +208,7 @@ func TestDiamConnStats(t *testing.T) {
 	// Ensure periodic health check happens.
 	time.Sleep(100 * time.Millisecond)
 
+	checkConnStatusMetric("SQ_CONN_ALL", 0)
 	checkConnStatusMetric("SQ_CONN_1", 0)
 	checkConnStatusMetric("SQ_CONN_2", 0)
 	checkConnStatusMetric("SQ_CONN_3", 0)
@@ -206,9 +216,11 @@ func TestDiamConnStats(t *testing.T) {
 
 	// restart connection from host1
 	connHost1 = initDiamConn("host1", "realm1")
+	t.Cleanup(func() { connHost1.Close() })
+	time.Sleep(10 * time.Millisecond) // wait for stats to process
+	checkConnStatusMetric("SQ_CONN_ALL", 1)
 	checkConnStatusMetric("SQ_CONN_1", 1)
 	checkConnStatusMetric("SQ_CONN_2", 0)
 	checkConnStatusMetric("SQ_CONN_3", 0)
-	t.Cleanup(func() { connHost1.Close() })
 	// scrapePromURL(t)
 }
diff --git a/agents/diamagent.go b/agents/diamagent.go
index b71dd77e2..4adbaa7d7 100644
--- a/agents/diamagent.go
+++ b/agents/diamagent.go
@@ -449,18 +449,8 @@ func (da *DiameterAgent) handleRAA(c diam.Conn, m *diam.Message) {
 	ch <- m
 }
 
-const (
-	// Connection status values for ConnectionStatus event field:
-	//   -1 : connection closed/down
-	//    0 : duplicate connection (no metric change)
-	//    1 : new connection established/up
-	diamConnStatusDown      = -1
-	diamConnStatusDuplicate = 0
-	diamConnStatusUp        = 1
-)
-
 // sendConnStatusReport reports connection status changes to StatS and ThresholdS.
-func (da *DiameterAgent) sendConnStatusReport(metadata *smpeer.Metadata, status int, localAddr, remoteAddr net.Addr) {
+func (da *DiameterAgent) sendConnStatusReport(metadata *smpeer.Metadata, status string, localAddr, remoteAddr net.Addr) {
 	daCfg := da.cgrCfg.DiameterAgentCfg()
 	if len(daCfg.StatSConns) == 0 && len(daCfg.ThresholdSConns) == 0 {
 		return // nothing to do
@@ -515,11 +505,11 @@ func (da *DiameterAgent) handleConns(peers <-chan diam.Conn) {
 		}
 		key := string(meta.OriginHost + utils.ConcatenatedKeySep + meta.OriginRealm)
 		da.peersLck.Lock()
-		diamConnStatus := diamConnStatusUp
+		connStatus := utils.ConnStatusUp
 		if _, exists := da.peers[key]; exists {
-			// Connection already exists for this peer. Set status to 0 (duplicate)
+			// Connection already exists for this peer. Set status to DUPLICATE
 			// to prevent incrementing StatS metrics.
-			diamConnStatus = diamConnStatusDuplicate
+			connStatus = utils.ConnStatusDuplicate
 
 			utils.Logger.Warning(fmt.Sprintf(
 				"<%s> a connection from a peer with the same ID (%q) is already registered, overwriting...",
@@ -528,7 +518,7 @@ func (da *DiameterAgent) handleConns(peers <-chan diam.Conn) {
 		da.peers[key] = c
 		da.peersLck.Unlock()
 		localAddr, remoteAddr := c.LocalAddr(), c.RemoteAddr()
-		da.sendConnStatusReport(meta, diamConnStatus, localAddr, remoteAddr)
+		da.sendConnStatusReport(meta, connStatus, localAddr, remoteAddr)
 		go func() {
 			// Use hybrid approach to detect connection closure. CloseNotify() may not
 			// fire if the serve() goroutine is blocked in Read(), so we also perform
@@ -538,7 +528,7 @@ func (da *DiameterAgent) handleConns(peers <-chan diam.Conn) {
 				da.peersLck.Lock()
 				delete(da.peers, key)
 				da.peersLck.Unlock()
-				da.sendConnStatusReport(meta, diamConnStatusDown, localAddr, remoteAddr)
+				da.sendConnStatusReport(meta, utils.ConnStatusDown, localAddr, remoteAddr)
 			}()
 
 			closeChan := c.(diam.CloseNotifier).CloseNotify()
diff --git a/engine/statmetrics.go b/engine/statmetrics.go
index 1466e4aa4..ee91570a2 100644
--- a/engine/statmetrics.go
+++ b/engine/statmetrics.go
@@ -772,41 +772,37 @@ func (m *Metric) Equal(v *Metric) bool {
 }
 
 func NewStatSum(minItems uint64, fieldName string, filterIDs []string) StatMetric {
-	return &StatSum{Metric: NewMetric(minItems, filterIDs),
-		FieldName: fieldName}
+	flds, _ := utils.NewRSRParsers(fieldName, utils.InfieldSep)
+	return &StatSum{
+		Metric: NewMetric(minItems, filterIDs),
+		Fields: flds,
+	}
 }
 
 type StatSum struct {
 	*Metric
-	FieldName string
+	Fields utils.RSRParsers
 }
 
 func (sum *StatSum) AddEvent(evID string, ev utils.DataProvider) error {
-	ival, err := utils.DPDynamicInterface(sum.FieldName, ev)
+	ival, err := sum.Fields.ParseDataProvider(ev)
 	if err != nil {
-		if err == utils.ErrNotFound {
-			err = utils.ErrPrefix(err, sum.FieldName)
-		}
 		return err
 	}
 	return sum.addEvent(evID, ival)
 }
 func (sum *StatSum) AddOneEvent(ev utils.DataProvider) error {
-	ival, err := utils.DPDynamicInterface(sum.FieldName, ev)
+	ival, err := sum.Fields.ParseDataProvider(ev)
 	if err != nil {
-		if err == utils.ErrNotFound {
-			err = utils.ErrPrefix(err, sum.FieldName)
-		}
 		return err
 	}
-
 	return sum.addOneEvent(ival)
 }
 
 func (sum *StatSum) Clone() StatMetric {
 	return &StatSum{
-		Metric:    sum.Metric.Clone(),
-		FieldName: sum.FieldName,
+		Metric: sum.Metric.Clone(),
+		Fields: sum.Fields,
 	}
 }
 
diff --git a/engine/statmetrics_test.go b/engine/statmetrics_test.go
index 0b72c3f40..f157615ef 100644
--- a/engine/statmetrics_test.go
+++ b/engine/statmetrics_test.go
@@ -2114,7 +2114,8 @@ func TestStatSumGetFloat64Value(t *testing.T) {
 		t.Errorf("wrong statSum value: %v", v)
 	}
 	ev2 := &utils.CGREvent{ID: "EVENT_2"}
-	if err := statSum.AddEvent(ev2.ID, utils.MapStorage{utils.MetaOpts: ev2.APIOpts}); err == nil || err.Error() != "NOT_FOUND:~*opts.*cost" {
+	if err := statSum.AddEvent(ev2.ID, utils.MapStorage{utils.MetaOpts: ev2.APIOpts}); err == nil ||
+		err != utils.ErrNotFound {
 		t.Error(err)
 	}
 	if v := statSum.GetValue(); v != utils.DecimalNaN {
@@ -2233,26 +2234,41 @@ func TestStatSumGetStringValue2(t *testing.T) {
 }
 
 func TestStatSumGetStringValue3(t *testing.T) {
-	statSum := &StatSum{Metric: NewMetric(2, nil), FieldName: "~*opts.*cost"}
+	statSum := &StatSum{
+		Metric: NewMetric(2, nil),
+		Fields: utils.NewRSRParsersMustCompile("~*opts.*cost", utils.InfieldSep),
+	}
 	expected := &StatSum{
 		Metric: &Metric{
 			Events: map[string]*DecimalWithCompress{
-				"EVENT_1": {Stat: utils.NewDecimalFromStringIgnoreError("12.20000000000000"), CompressFactor: 2},
-				"EVENT_3": {Stat: utils.NewDecimalFromStringIgnoreError("18.300000000000000710542735760100185871124267578125"), CompressFactor: 1},
+				"EVENT_1": {Stat: utils.NewDecimalFromStringIgnoreError("12.2"), CompressFactor: 2},
+				"EVENT_3": {Stat: utils.NewDecimalFromStringIgnoreError("18.3"), CompressFactor: 1},
 			},
 			MinItems: 2,
 			Count:    3,
-			Value:    utils.NewDecimalFromStringIgnoreError("42.700"),
+			Value:    utils.NewDecimalFromStringIgnoreError("42.7"),
 		},
-		FieldName: "~*opts.*cost",
+		Fields: utils.NewRSRParsersMustCompile("~*opts.*cost", utils.InfieldSep),
 	}
 	expected.GetStringValue(config.CgrConfig().GeneralCfg().RoundingDecimals)
-	ev1 := &utils.CGREvent{ID: "EVENT_1",
-		APIOpts: map[string]any{utils.MetaCost: 18.2}}
-	ev2 := &utils.CGREvent{ID: "EVENT_1",
-		APIOpts: map[string]any{utils.MetaCost: 6.2}}
-	ev3 := &utils.CGREvent{ID: "EVENT_3",
-		APIOpts: map[string]any{utils.MetaCost: 18.3}}
+	ev1 := &utils.CGREvent{
+		ID: "EVENT_1",
+		APIOpts: map[string]any{
+			utils.MetaCost: utils.NewDecimal(182, 1),
+		},
+	}
+	ev2 := &utils.CGREvent{
+		ID: "EVENT_1",
+		APIOpts: map[string]any{
+			utils.MetaCost: utils.NewDecimal(62, 1),
+		},
+	}
+	ev3 := &utils.CGREvent{
+		ID: "EVENT_3",
+		APIOpts: map[string]any{
+			utils.MetaCost: utils.NewDecimal(183, 1),
+		},
+	}
 	if err := statSum.AddEvent(ev1.ID, utils.MapStorage{utils.MetaOpts: ev1.APIOpts}); err != nil {
 		t.Error(err)
 	}
@@ -2278,26 +2294,41 @@ func TestStatSumGetStringValue3(t *testing.T) {
 }
 
 func TestStatSumCompress(t *testing.T) {
-	sum := &StatSum{Metric: NewMetric(2, nil), FieldName: "~*opts.*cost"}
+	sum := &StatSum{
+		Metric: NewMetric(2, nil),
+		Fields: utils.NewRSRParsersMustCompile("~*opts.*cost", utils.InfieldSep),
+	}
 	expected := &StatSum{
 		Metric: &Metric{
 			Events: map[string]*DecimalWithCompress{
-				"EVENT_1": {Stat: utils.NewDecimalFromStringIgnoreError("18.199999999999999289457264239899814128875732421875"), CompressFactor: 1},
-				"EVENT_2": {Stat: utils.NewDecimalFromStringIgnoreError("6.20000000000000017763568394002504646778106689453125"), CompressFactor: 1},
+				"EVENT_1": {Stat: utils.NewDecimalFromStringIgnoreError("18.2"), CompressFactor: 1},
+				"EVENT_2": {Stat: utils.NewDecimalFromStringIgnoreError("6.2"), CompressFactor: 1},
 			},
 			MinItems: 2,
-			Value:    utils.NewDecimalFromStringIgnoreError("24.400"),
+			Value:    utils.NewDecimalFromStringIgnoreError("24.4"),
 			Count:    2,
 		},
-		FieldName: "~*opts.*cost",
+		Fields: utils.NewRSRParsersMustCompile("~*opts.*cost", utils.InfieldSep),
 	}
 	expected.GetStringValue(config.CgrConfig().GeneralCfg().RoundingDecimals)
-	ev := &utils.CGREvent{ID: "EVENT_1",
-		APIOpts: map[string]any{utils.MetaCost: 18.2}}
-	ev2 := &utils.CGREvent{ID: "EVENT_2",
-		APIOpts: map[string]any{utils.MetaCost: 6.2}}
-	ev4 := &utils.CGREvent{ID: "EVENT_1",
-		APIOpts: map[string]any{utils.MetaCost: 18.3}}
+	ev := &utils.CGREvent{
+		ID: "EVENT_1",
+		APIOpts: map[string]any{
+			utils.MetaCost: utils.NewDecimal(182, 1),
+		},
+	}
+	ev2 := &utils.CGREvent{
+		ID: "EVENT_2",
+		APIOpts: map[string]any{
+			utils.MetaCost: utils.NewDecimal(62, 1),
+		},
+	}
+	ev4 := &utils.CGREvent{
+		ID: "EVENT_1",
+		APIOpts: map[string]any{
+			utils.MetaCost: utils.NewDecimal(183, 1),
+		},
+	}
 	sum.AddEvent(ev.ID, utils.MapStorage{utils.MetaOpts: ev.APIOpts})
 	sum.AddEvent(ev2.ID, utils.MapStorage{utils.MetaOpts: ev2.APIOpts})
 	expIDs := []string{"EVENT_1", "EVENT_2"}
@@ -2319,7 +2350,7 @@ func TestStatSumCompress(t *testing.T) {
 			Value:    utils.NewDecimalFromFloat64(24.4),
 			Count:    2,
 		},
-		FieldName: "~*opts.*cost",
+		Fields: utils.NewRSRParsersMustCompile("~*opts.*cost", utils.InfieldSep),
 	}
 	expected.GetStringValue(config.CgrConfig().GeneralCfg().RoundingDecimals)
 	expIDs = []string{"EVENT_3"}
@@ -3013,7 +3044,7 @@ func TestStatSumMarshal(t *testing.T) {
 			utils.MetaUsage:       10 * time.Second}}
 	statSum.AddEvent(ev.ID, utils.MapStorage{utils.MetaOpts: ev.APIOpts})
 	var nstatSum StatSum
-	expected := []byte(`{"Value":20,"Count":1,"Events":{"EVENT_1":{"Stat":20,"CompressFactor":1}},"MinItems":2,"FilterIDs":null,"FieldName":"~*opts.*cost"}`)
+	expected := []byte(`{"Value":20,"Count":1,"Events":{"EVENT_1":{"Stat":20,"CompressFactor":1}},"MinItems":2,"FilterIDs":null,"Fields":[{"Rules":"~*opts.*cost","Path":"~*opts.*cost"}]}`)
 	if b, err := jMarshaler.Marshal(statSum); err != nil {
 		t.Error(err)
 	} else if !reflect.DeepEqual(expected, b) {
@@ -3704,9 +3735,10 @@ func TestStatPDDClone(t *testing.T) {
 }
 
 func TestStatSumClone(t *testing.T) {
-
-	sum := &StatSum{Metric: NewMetric(2, nil), FieldName: "~*opts.*cost"}
-
+	sum := &StatSum{
+		Metric: NewMetric(2, nil),
+		Fields: utils.NewRSRParsersMustCompile("~*opts.*cost", utils.InfieldSep),
+	}
 	if rcv := sum.Clone(); !reflect.DeepEqual(rcv, sum) {
 		t.Errorf("Expecting <%+v>,\n Recevied <%+v>", sum, rcv)
 	}
diff --git a/utils/consts.go b/utils/consts.go
index bbf088ee8..57731ff70 100644
--- a/utils/consts.go
+++ b/utils/consts.go
@@ -560,9 +560,12 @@ const (
 	EventConnectionStatusReport = "ConnectionStatusReport"
 
 	// Connection status event fields.
-	ConnLocalAddr  = "LocalAddr"
-	ConnRemoteAddr = "RemoteAddr"
-	ConnStatus     = "ConnectionStatus" // -1=down, 0=duplicate, 1=up
+	ConnLocalAddr       = "LocalAddr"
+	ConnRemoteAddr      = "RemoteAddr"
+	ConnStatus          = "ConnectionStatus" // sum metric: UP=1, DOWN=-1, DUPLICATE=0
+	ConnStatusUp        = "UP"
+	ConnStatusDown      = "DOWN"
+	ConnStatusDuplicate = "DUPLICATE"
 
 	// ReplyState error constants
 	ErrReplyStateAuthorize = "ERR_AUTHORIZE"
@@ -757,6 +760,7 @@ const (
 	MetaSIPURIMethod        = "*sipuri_method"
 	MetaSIPURIHost          = "*sipuri_host"
 	MetaSIPURIUser          = "*sipuri_user"
+	MetaConnStatus          = "*conn_status"
 	E164DomainConverter     = "*e164Domain"
 	E164Converter           = "*e164"
 	MetaJoin                = "*join"
diff --git a/utils/dataconverter.go b/utils/dataconverter.go
index b46ad63f2..05a9f7e36 100644
--- a/utils/dataconverter.go
+++ b/utils/dataconverter.go
@@ -142,6 +142,8 @@ func NewDataConverter(params string) (conv DataConverter, err error) {
 		return splitConverter(params[len(MetaSplit)+1:]), nil
 	case strings.HasPrefix(params, MetaStrip):
 		return NewStripConverter(params)
+	case params == MetaConnStatus:
+		return ConnStatusConverter{}, nil
 	case strings.HasPrefix(params, MetaGigawords):
 		return new(GigawordsConverter), nil
 	default:
@@ -838,3 +840,21 @@ func (GigawordsConverter) Convert(in any) (any, error) {
 	totalOctects := (gigawordsValue * int64(math.Pow(2, 32))) // 2^32
 	return totalOctects, nil
 }
+
+// ConnStatusConverter converts connection status strings to numeric values.
+// Returns 1 for UP, -1 for DOWN, and 0 for DUPLICATE.
+type ConnStatusConverter struct{}
+
+// Convert implements DataConverter interface
+func (c ConnStatusConverter) Convert(in any) (any, error) {
+	status := IfaceAsString(in)
+	switch status {
+	case ConnStatusUp:
+		return 1, nil
+	case ConnStatusDown:
+		return -1, nil
+	case ConnStatusDuplicate:
+		return 0, nil
+	}
+	return 0, fmt.Errorf("unsupported connection status: %q", status)
+}