1 files changed, 4 insertions, 0 deletions
diff --git a/voip/java/com/android/server/sip/SipHelper.java b/voip/java/com/android/server/sip/SipHelper.java
index 2514262..13e6f14 100644
--- a/voip/java/com/android/server/sip/SipHelper.java
+++ b/voip/java/com/android/server/sip/SipHelper.java
@@ -365,6 +365,10 @@ class SipHelper {
             Response response = mMessageFactory.createResponse(
                     Response.BUSY_HERE, request);
 
+            if (inviteTransaction == null) {
+                inviteTransaction = getServerTransaction(event);
+            }
+
             if (inviteTransaction.getState() != TransactionState.COMPLETED) {
                 if (DEBUG) Log.d(TAG, "send BUSY HERE: " + response);
                 inviteTransaction.sendResponse(response);