diff --git a/protos/voltha_protos/openolt.proto b/protos/voltha_protos/openolt.proto
index 253556a..bb04eed 100644
--- a/protos/voltha_protos/openolt.proto
+++ b/protos/voltha_protos/openolt.proto
@@ -21,6 +21,7 @@
 package openolt;
 import "google/api/annotations.proto";
 import public "voltha_protos/tech_profile.proto";
+import public "voltha_protos/common.proto";
 
 service Openolt {
 
@@ -172,6 +173,14 @@
           body: "*"
         };
     }
+
+    rpc GetExtValue(ValueParam) returns (common.ReturnValues) {
+        option (google.api.http) = {
+          post: "/v1/GetExtValue"
+          body: "*"
+        };
+    }
+
 }
 
 message Indication {
@@ -586,7 +595,10 @@
     Action action = 4;
 }
 
-
+message ValueParam {
+	Onu onu = 1;
+	common.ValueType.Type value = 2;
+}
 
 message Empty {}