diff --git a/telecomm/java/android/telecom/ConnectionService.java b/telecomm/java/android/telecom/ConnectionService.java
index d2e7a74977e02..966b2ae126144 100644
--- a/telecomm/java/android/telecom/ConnectionService.java
+++ b/telecomm/java/android/telecom/ConnectionService.java
@@ -655,6 +655,9 @@ public abstract class ConnectionService extends Service {
                         connection.getDisconnectCause(),
                         createIdList(connection.getConferenceables()),
                         connection.getExtras()));
+        if (isUnknown) {
+            triggerConferenceRecalculate();
+        }
     }
 
     private void abort(String callId) {
@@ -1013,6 +1016,16 @@ public abstract class ConnectionService extends Service {
         return null;
     }
 
+    /**
+     * Trigger recalculate functinality for conference calls. This is used when a Telephony
+     * Connection is part of a conference controller but is not yet added to Connection
+     * Service and hence cannot be added to the conference call.
+     *
+     * @hide
+     */
+    public void triggerConferenceRecalculate() {
+    }
+
     /**
      * Create a {@code Connection} given an outgoing request. This is used to initiate new
      * outgoing calls.