diff --git a/cmd/cgr-engine/cgr-engine.go b/cmd/cgr-engine/cgr-engine.go
index 928a56358..32cd446b5 100644
--- a/cmd/cgr-engine/cgr-engine.go
+++ b/cmd/cgr-engine/cgr-engine.go
@@ -837,7 +837,6 @@ func main() {
 	if *nodeID != "" {
 		cfg.NodeID = *nodeID
 	}
-	fmt.Printf("\ncfg.DigestSeparator %+v,\n cfg.DigestEqual %+v\n", cfg.DigestSeparator, cfg.DigestEqual)
 	config.SetCgrConfig(cfg) // Share the config object
 
 	// init syslog
diff --git a/config/config.go b/config/config.go
index deca8c370..eb52aae63 100755
--- a/config/config.go
+++ b/config/config.go
@@ -328,7 +328,7 @@ type CGRConfig struct {
 	CDRSThresholdSConns      []*HaPoolConfig // address where to reach the thresholds service
 	CDRSStatSConns           []*HaPoolConfig
 	CDRSOnlineCDRExports     []string      // list of CDRE templates to use for real-time CDR exports
-	CDRStatsEnabled          bool          // Enable CDR Stats servicedigest_separator = ","
+	CDRStatsEnabled          bool          // Enable CDR Stats service
 	CDRStatsSaveInterval     time.Duration // Save interval duration
 	CdreProfiles             map[string]*CdreConfig
 	CdrcProfiles             map[string][]*CdrcConfig // Number of CDRC instances running imports, format map[dirPath][]{Configs}
@@ -888,7 +888,11 @@ func (self *CGRConfig) loadFromJsonCfg(jsnCfg *CgrJsonCfg) (err error) {
 			self.DataDbHost = *jsnDataDbCfg.Db_host
 		}
 		if jsnDataDbCfg.Db_port != nil {
-			self.DataDbPort = strconv.Itoa(*jsnDataDbCfg.Db_port)
+			port := strconv.Itoa(*jsnDataDbCfg.Db_port)
+			if port == "-1" {
+				port = utils.MetaDynamic
+			}
+			self.DataDbPort = NewDbDefaults().DBPort(*jsnDataDbCfg.Db_type, port)
 		}
 		if jsnDataDbCfg.Db_name != nil {
 			self.DataDbName = *jsnDataDbCfg.Db_name
@@ -912,7 +916,11 @@ func (self *CGRConfig) loadFromJsonCfg(jsnCfg *CgrJsonCfg) (err error) {
 			self.StorDBHost = *jsnStorDbCfg.Db_host
 		}
 		if jsnStorDbCfg.Db_port != nil {
-			self.StorDBPort = strconv.Itoa(*jsnStorDbCfg.Db_port)
+			port := strconv.Itoa(*jsnStorDbCfg.Db_port)
+			if port == "-1" {
+				port = utils.MetaDynamic
+			}
+			self.StorDBPort = NewDbDefaults().DBPort(*jsnStorDbCfg.Db_type, port)
 		}
 		if jsnStorDbCfg.Db_name != nil {
 			self.StorDBName = *jsnStorDbCfg.Db_name
diff --git a/config/config_test.go b/config/config_test.go
index 809073229..bd4f7d4c7 100755
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -65,6 +65,76 @@ func TestCgrCfgLoadWithDefaults(t *testing.T) {
 	}
 }
 
+func TestCgrCfgDataDBPortWithoutDynamic(t *testing.T) {
+	JSN_CFG := `
+{
+"data_db": {
+	"db_type": "mongo",
+	}
+}`
+
+	if cgrCfg, err := NewCGRConfigFromJsonStringWithDefaults(JSN_CFG); err != nil {
+		t.Error(err)
+	} else if cgrCfg.DataDbType != utils.MONGO {
+		t.Errorf("Expected: %+v, received: %+v", cgrCfg.DataDbType, utils.MONGO)
+	} else if cgrCfg.DataDbPort != "6379" {
+		t.Errorf("Expected: %+v, received: %+v", cgrCfg.DataDbPort, "6379")
+	}
+}
+
+func TestCgrCfgDataDBPortWithDymanic(t *testing.T) {
+	JSN_CFG := `
+{
+"data_db": {
+	"db_type": "mongo",
+	"db_port": -1,
+	}
+}`
+
+	if cgrCfg, err := NewCGRConfigFromJsonString(JSN_CFG); err != nil {
+		t.Error(err)
+	} else if cgrCfg.DataDbType != utils.MONGO {
+		t.Errorf("Expected: %+v, received: %+v", cgrCfg.DataDbType, utils.MONGO)
+	} else if cgrCfg.DataDbPort != "27017" {
+		t.Errorf("Expected: %+v, received: %+v", cgrCfg.DataDbPort, "27017")
+	}
+}
+
+func TestCgrCfgStorDBPortWithoutDynamic(t *testing.T) {
+	JSN_CFG := `
+{
+"stor_db": {
+	"db_type": "mongo",
+	}
+}`
+
+	if cgrCfg, err := NewCGRConfigFromJsonStringWithDefaults(JSN_CFG); err != nil {
+		t.Error(err)
+	} else if cgrCfg.StorDBType != utils.MONGO {
+		t.Errorf("Expected: %+v, received: %+v", cgrCfg.StorDBType, utils.MONGO)
+	} else if cgrCfg.StorDBPort != "3306" {
+		t.Errorf("Expected: %+v, received: %+v", cgrCfg.StorDBPort, "3306")
+	}
+}
+
+func TestCgrCfgStorDBPortWithDymanic(t *testing.T) {
+	JSN_CFG := `
+{
+"stor_db": {
+	"db_type": "mongo",
+	"db_port": -1,
+	}
+}`
+
+	if cgrCfg, err := NewCGRConfigFromJsonString(JSN_CFG); err != nil {
+		t.Error(err)
+	} else if cgrCfg.StorDBType != utils.MONGO {
+		t.Errorf("Expected: %+v, received: %+v", cgrCfg.StorDBType, utils.MONGO)
+	} else if cgrCfg.StorDBPort != "27017" {
+		t.Errorf("Expected: %+v, received: %+v", cgrCfg.StorDBPort, "27017")
+	}
+}
+
 func TestCgrCfgCDRC(t *testing.T) {
 	JSN_RAW_CFG := `
 {
@@ -217,6 +287,12 @@ func TestCgrCfgJSONDefaultsGeneral(t *testing.T) {
 	if cgrCfg.LogLevel != 6 {
 		t.Error(cgrCfg.LogLevel)
 	}
+	if cgrCfg.DigestSeparator != "," {
+		t.Error(cgrCfg.DigestSeparator)
+	}
+	if cgrCfg.DigestEqual != ":" {
+		t.Error(cgrCfg.DigestEqual)
+	}
 }
 
 func TestCgrCfgJSONDefaultsListen(t *testing.T) {