diff --git a/protos/voltha_protos/common.proto b/protos/voltha_protos/common.proto
index 6ca156c..91e1fb1 100644
--- a/protos/voltha_protos/common.proto
+++ b/protos/voltha_protos/common.proto
@@ -96,3 +96,28 @@
     // Additional Info
     string additional_info = 2;
 }
+message ValueType {
+        enum Type {
+                EMPTY = 0;
+                DISTANCE = 1;
+        }
+}
+message ValueSpecifier {
+	string id = 1;
+	ValueType.Type value = 2;
+}
+
+message ReturnValues {
+        uint32  Set = 1;       // Specifies what values are
+                               // set/valid in return
+
+        uint32 Unsupported = 2; // Specifies requested values not
+                                // supported by the device
+
+        uint32 Error  = 3;      // Specifies requested values not
+                                // fetched because of error
+
+        uint32 Distance = 4;    // Value of distance Set includes
+                                // DISTANCE
+
+}
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 {}
 
diff --git a/protos/voltha_protos/voltha.proto b/protos/voltha_protos/voltha.proto
index b8edd31..e6d9fdd 100644
--- a/protos/voltha_protos/voltha.proto
+++ b/protos/voltha_protos/voltha.proto
@@ -597,6 +597,11 @@
             body: "*"
         };
     }
+    rpc GetExtValue(common.ValueSpecifier) returns(common.ReturnValues) {
+        option (google.api.http) = {
+            get: "/api/v1/GetExtValue"
+        };
+    }
 
     // omci start and stop cli implementation
     rpc StartOmciTestAction(OmciTestRequest) returns(TestResponse) {