diff --git a/internal/pkg/config/config.go b/internal/pkg/config/config.go
index c4ab249..b61a909 100644
--- a/internal/pkg/config/config.go
+++ b/internal/pkg/config/config.go
@@ -69,6 +69,10 @@
 	defaultOmciTimeout          = 3 * time.Second
 	defaultDlToAdapterTimeout   = 10 * time.Second
 	defaultDlToOnuTimeoutPer4MB = 60 * time.Minute //assumed for 4 MB of the image
+	//Mask to indicate which possibly active ONU UNI state  is really reported to the core
+	// compare python code - at the moment restrict active state to the first ONU UNI port
+	// check is limited to max 16 uni ports - cmp above UNI limit!!!
+	defaultUniPortMask = 0x0001
 )
 
 // AdapterFlags represents the set of configurations used by the read-write adaptercore service
@@ -109,6 +113,7 @@
 	AlarmAuditInterval          time.Duration
 	DownloadToAdapterTimeout    time.Duration
 	DownloadToOnuTimeout4MB     time.Duration
+	UniPortMask                 int
 }
 
 // NewAdapterFlags returns a new RWCore config
@@ -149,6 +154,7 @@
 		OmciTimeout:                 defaultOmciTimeout,
 		DownloadToAdapterTimeout:    defaultDlToAdapterTimeout,
 		DownloadToOnuTimeout4MB:     defaultDlToOnuTimeoutPer4MB,
+		UniPortMask:                 defaultUniPortMask,
 	}
 	return &adapterFlags
 }
@@ -260,6 +266,9 @@
 	help = "File download to ONU timeout in minutes for a block of 4MB"
 	flag.DurationVar(&(so.DownloadToOnuTimeout4MB), "download_to_onu_timeout_4MB", defaultDlToOnuTimeoutPer4MB, help)
 
+	help = "The bitmask to identify UNI ports that need to be enabled"
+	flag.IntVar(&(so.UniPortMask), "uni_port_mask", defaultUniPortMask, help)
+
 	flag.Parse()
 	containerName := getContainerInfo()
 	if len(containerName) > 0 {
diff --git a/internal/pkg/onuadaptercore/device_handler.go b/internal/pkg/onuadaptercore/device_handler.go
index 929964c..1a541c7 100644
--- a/internal/pkg/onuadaptercore/device_handler.go
+++ b/internal/pkg/onuadaptercore/device_handler.go
@@ -2438,7 +2438,7 @@
 
 	for uniNo, uniPort := range dh.uniEntityMap {
 		// only if this port is validated for operState transfer
-		if (1<<uniPort.uniID)&activeUniPortStateUpdateMask == (1 << uniPort.uniID) {
+		if (1<<uniPort.uniID)&dh.pOpenOnuAc.config.UniPortMask == (1 << uniPort.uniID) {
 			logger.Infow(ctx, "onuUniPort-forced-OperState-ACTIVE", log.Fields{"for PortNo": uniNo, "device-id": dh.deviceID})
 			uniPort.setOperState(vc.OperStatus_ACTIVE)
 			if !dh.isReconciling() {
@@ -2457,7 +2457,8 @@
 	//   -> use current restriction to operate only on first UNI port as inherited from actual Py code
 	for uniNo, uniPort := range dh.uniEntityMap {
 		// only if this port is validated for operState transfer
-		if (1<<uniPort.uniID)&activeUniPortStateUpdateMask == (1 << uniPort.uniID) {
+
+		if (1<<uniPort.uniID)&dh.pOpenOnuAc.config.UniPortMask == (1 << uniPort.uniID) {
 			logger.Infow(ctx, "onuUniPort-forced-OperState-UNKNOWN", log.Fields{"for PortNo": uniNo, "device-id": dh.deviceID})
 			uniPort.setOperState(vc.OperStatus_UNKNOWN)
 			if !dh.isReconciling() {
diff --git a/internal/pkg/onuadaptercore/platform.go b/internal/pkg/onuadaptercore/platform.go
index 1f9898f..6ad3e7b 100644
--- a/internal/pkg/onuadaptercore/platform.go
+++ b/internal/pkg/onuadaptercore/platform.go
@@ -115,11 +115,6 @@
 	*/
 )
 
-//Mask to indicate which possibly active ONU UNI state  is really reported to the core
-// compare python code - at the moment restrict active state to the first ONU UNI port
-// check is limited to max 16 uni ports - cmp above UNI limit!!!
-var activeUniPortStateUpdateMask = 0x0001
-
 /*
 //MinUpstreamPortID value
 var minUpstreamPortID = 0xfffd
diff --git a/internal/pkg/onuadaptercore/uniportadmin.go b/internal/pkg/onuadaptercore/uniportadmin.go
index 57a1b58..fea1838 100644
--- a/internal/pkg/onuadaptercore/uniportadmin.go
+++ b/internal/pkg/onuadaptercore/uniportadmin.go
@@ -416,7 +416,8 @@
 	for uniNo, uniPort := range oFsm.pOmciCC.pBaseDeviceHandler.uniEntityMap {
 		// only unlock the UniPort in case it is defined for usage (R2.6 limit only one port),
 		// compare also limitation for logical voltha port in dh.enableUniPortStateUpdate()
-		if (omciAdminState == 1) || (1<<uniPort.uniID)&activeUniPortStateUpdateMask == (1<<uniPort.uniID) {
+
+		if (omciAdminState == 1) || (1<<uniPort.uniID)&oFsm.pDeviceHandler.pOpenOnuAc.config.UniPortMask == (1<<uniPort.uniID) {
 			var meInstance *me.ManagedEntity
 			if uniPort.portType == uniPPTP {
 				logger.Debugw(ctx, "Setting PPTP admin state", log.Fields{