diff --git a/services/core/java/com/android/server/notification/NotificationManagerService.java b/services/core/java/com/android/server/notification/NotificationManagerService.java
index 3856633df28f3..d1e0b0474b61e 100755
--- a/services/core/java/com/android/server/notification/NotificationManagerService.java
+++ b/services/core/java/com/android/server/notification/NotificationManagerService.java
@@ -6948,9 +6948,14 @@ public class NotificationManagerService extends SystemService {
         try {
             if (mPackageManagerClient.hasSystemFeature(FEATURE_TELECOM)
                     && mTelecomManager != null) {
-                return mTelecomManager.isInManagedCall()
-                        || mTelecomManager.isInSelfManagedCall(
-                                pkg, UserHandle.getUserHandleForUid(uid));
+                try {
+                    return mTelecomManager.isInManagedCall()
+                            || mTelecomManager.isInSelfManagedCall(
+                            pkg, UserHandle.getUserHandleForUid(uid));
+                } catch (IllegalStateException ise) {
+                    // Telecom is not ready (this is likely early boot), so there are no calls.
+                    return false;
+                }
             }
             return false;
         } finally {
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
index 779673e98c6f4..0d56975f51d0f 100755
--- a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
@@ -9331,6 +9331,13 @@ public class NotificationManagerServiceTest extends UiServiceTestCase {
         assertThat(mService.checkDisqualifyingFeatures(r.getUserId(), r.getUid(),
                            r.getSbn().getId(), r.getSbn().getTag(), r, false))
                 .isFalse();
+
+        // telecom manager is not ready - blocked
+        mService.setTelecomManager(mTelecomManager);
+        when(mTelecomManager.isInCall()).thenThrow(new IllegalStateException("not ready"));
+        assertThat(mService.checkDisqualifyingFeatures(r.getUserId(), r.getUid(),
+                r.getSbn().getId(), r.getSbn().getTag(), r, false))
+                .isFalse();
     }
 
     @Test
@@ -9430,6 +9437,18 @@ public class NotificationManagerServiceTest extends UiServiceTestCase {
 
         verify(mUsageStats).registerBlocked(any());
         verify(mUsageStats, never()).registerPostedByApp(any());
+
+        // telecom is not ready - notifications should be blocked but no crashes
+        mService.setTelecomManager(mTelecomManager);
+        when(mTelecomManager.isInCall()).thenThrow(new IllegalStateException("not ready"));
+        reset(mUsageStats);
+
+        mService.addEnqueuedNotification(r);
+        runnable.run();
+        waitForIdle();
+
+        verify(mUsageStats).registerBlocked(any());
+        verify(mUsageStats, never()).registerPostedByApp(any());
     }
 
     @Test