diff --git a/dmtree/tr181/atm.c b/dmtree/tr181/atm.c
index 15dedff0..1ed83a78 100644
--- a/dmtree/tr181/atm.c
+++ b/dmtree/tr181/atm.c
@@ -223,9 +223,16 @@ static int set_atm_enable(char *refparam, struct dmctx *ctx, void *data, char *i
 	return 0;
 }
 
+/*#Device.ATM.Link.{i}.Status!SYSFS:/sys/class/net/@Name/operstate*/
 static int get_atm_status(char *refparam, struct dmctx *ctx, void *data, char *instance, char **value)
 {
-	*value = "Up";
+	get_net_device_sysfs(((struct atm_args *)data)->ifname, "operstate", value);
+	if (strcmp(*value, "up") == 0)
+		*value = "Up";
+	else if (strcmp(*value, "down") == 0)
+		*value = "Down";
+	else
+		*value = "Unknown";
 	return 0;
 }
 
diff --git a/dmtree/tr181/ptm.c b/dmtree/tr181/ptm.c
index 3f9fe941..28f1102c 100644
--- a/dmtree/tr181/ptm.c
+++ b/dmtree/tr181/ptm.c
@@ -120,9 +120,16 @@ static int set_ptm_enable(char *refparam, struct dmctx *ctx, void *data, char *i
 	return 0;
 }
 
+/*#Device.PTM.Link.{i}.Status!SYSFS:/sys/class/net/@Name/operstate*/
 static int get_ptm_status(char *refparam, struct dmctx *ctx, void *data, char *instance, char **value)
 {
-	*value = "Up";
+	get_net_device_sysfs(((struct ptm_args *)data)->ifname, "operstate", value);
+	if (strcmp(*value, "up") == 0)
+		*value = "Up";
+	else if (strcmp(*value, "down") == 0)
+		*value = "Down";
+	else
+		*value = "Unknown";
 	return 0;
 }
 
diff --git a/json/tr181.json b/json/tr181.json
index 40b9dc84..0b3b2b21 100644
--- a/json/tr181.json
+++ b/json/tr181.json
@@ -17380,6 +17380,12 @@
 						"NotPresent",
 						"LowerLayerDown",
 						"Error"
+					],
+					"mapping": [
+						{
+							"type": "sysfs",
+							"file": "/sys/class/net/@Name/operstate"
+						}
 					]
 				},
 				"Alias": {
@@ -18248,6 +18254,12 @@
 						"NotPresent",
 						"LowerLayerDown",
 						"Error"
+					],
+					"mapping": [
+						{
+							"type": "sysfs",
+							"file": "/sys/class/net/@Name/operstate"
+						}
 					]
 				},
 				"Alias": {